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Coldest air of the season this weekend - snow?

The coldest air of the season to date will pour into southern Quebec and Ontario this weekend.

Snow this weekend? There are hints of the four letter word creeping into the forecast. Don't panic just yet. Cold air will pour into Ontario and Quebec behind a cold front late Friday. Temperatures will fall to near 0C (32F) by Saturday morning, and even colder -2C (28F) by Sunday here in Montreal. It will be much colder north of the city in the Laurentians, dropping to as cold as -10C (14F). I expect a widespread frost and freeze bringing the growing season or what is left of it to an end.

Snow
As far as any snowfall goes, there will be moisture available behind the front Friday, but it will be fairly limited in the valleys with perhaps a flake or two in Montreal. However, if you are travelling northwest of Montreal towards Val-d'or, where it is snowing this morning, or south across the Adirondacks of New York or Green Mountains of Vermont, there could be quite a bit more. Computer models are hinting at perhaps 5-10cm (2-4 inches) of new snow by Sunday morning across areas above 1500 feet. Even 15cm (6 inches) is forecast at Jay Peak. If you are taking Interstate 89 or 87 south, you may encounter snowfall Saturday night. Be aware of this.

It will turn warmer next week after the brief cold spell. However, you should be thinking about winter tires. It looks like there could be several opportunities for an early season snow in November over southern Quebec. Just a heads up.

Colder weather with frost this week for Montreal

It was a perfect Thanksgiving Monday on L'Ile Perrot with sunshine and record warmth. (ValleyWX Photo)

Depending on where you were in southern Quebec on Thanksgiving Monday, you may have had the warmest October 12 on record. The temperature reached 24.9C (77F) here on L'Ile Perrot but 23.5C (75F) at Trudeau Airport just missing the record of 23.9C (76F) set in 1961. No matter where you were across the region it was a perfect way to end the summer season for good. I say that because much colder air is on the way. Looking ahead I don't see another opportunity for temperatures that warm. We are rapidly loosing daylight as well which tends to limit just how warm it can get.

Frost & Snowflakes
This morning a series of cold fronts is off to our west and will begin the slow process of lowering temperatures this week. Expect showers to develop today and persist into Wednesday. The temperature will reach 18C (65F) today, but only 12C (54F) Wednesday and no better than 5C (41F) by Saturday. The weather will be rather unsettled all week with limited sunshine and periodic showers. I am quite confident that by Saturday or Sunday morning we will see a hard frost in most regions of southern Quebec including metro Montreal. Overnight lows will drop below freezing for the first time this season. There is also the chance for a few snow showers across the mountains of southern Quebec and New England. Looking ahead into next week milder temperatures are forecast to return but not the 20 plus weather we just experienced.

Warm Thanksgiving for Montreal then turning much colder

The warm Thanksgiving in Montreal will be replaced by much cooler air, clouds and showers as the weeks moves along.

It will be an Indian Summer type day across southern Quebec, Ontario and New England on this Thanksgiving Monday. Temperatures will be on the rise aided by gusty southwest winds up to 50km/h and sunshine. Expect warm highs of 21C to 24C (70 to 75F) across the region, well above the normal high for Montreal of 13C (55F). The brief warmth is being caused by strong low pressure moving out of the Prairies and across the Great Lakes. Montreal has an outside shot today at the record high of 23.9C (76F) set in 1961.

This system has a strong cold front associated with it that is plunging temperatures back to reality behind it. Over the weekend warm air rushed north ahead of the system pushing temperatures to record levels across the west. It was downright hot in the northern US plains states with Fargo, North Dakota reaching 97F (36C) smashing a 72 year old record of 85F from 1973. Temperatures pushed into the middle to upper 20's across southern Manitoba and Saskatchewan before the front arrived. The front arrived with strong to severe winds sweeping across the region. Gusts were reported to 109km/h at Leader and 104km/h at Assiniboia in Saskatchewan. In Alberta a gust to 111km/h occurred at Alliance and 89km/h in Edmonton.

In Montreal the sunshine of today will be replaced by clouds and showers for the rest of the week. After the warm temperatures today, we will see gradual decline in highs and lows through next weekend. By Saturday the high will only be 6C (43F) in Montreal with lows near freezing and frost expected. We may even see the first snowflakes of the season across the mountains of New York, Vermont, the Laurentians and Townships by late Friday night.

Epic flooding in the Carolinas - rain on the way for Montreal

The weather has been rather quiet in Montreal with partly cloudy skies and seasonable temperatures. A large area of high pressure over central Quebec has deflected any storm activity well to our south and east including hurricane Joaquin. Sunshine will prevail again on Thursday with temperatures a little cooler than they have been of late. There is even a risk of frost away from the St. Lawrence Valley, particularly across the lower Laurentians. The low is expected to be near 2C (36F) with highs around 13C (55F). Our extended period of dry weather will end Friday as low pressure moves into the region with widespread rain. At this time it looks like 15-25mm of rain will fall through Friday evening. Skies will clear out for the weekend with temperatures near normal.

Historic flooding from last weekend in South Carolina. (Charleston Post Courier Photo)

The clean up continues in South Carolina after epic rainfall last weekend. Some locations recorded 1000 year rain events with as much as 27 inches (over 685mm) of rain in less than 5 days. That amounts to nearly an entire years worth of rainfall here in Montreal where the annual average is 784mm. The rain destroyed homes and washed away roads including a portion of Interstate 95 as well as infrastructure, claiming at least 17 lives. Flooding was also reported in North Carolina and in coastal communities from Georgia to Maine. The heavy surf and coastal flooding was caused in part by hurricane Joaquin passing well offshore. The heavy rain was the result of an upper level low over the southeast US and a persistent ribbon of moisture moving inland from the tropical Atlantic. Many rivers remain above flood stage with more damage expected in the coming days. Evacuations have been ordered in many areas with as many as 13 dams failing so far in South Carolina. Damage is expected to be in the billions of dollars.

While Montreal has had no rain so far in October, portions of the east coast were inundated.

Hurricane Joaquin moves out to sea - high pressure dominates in Montreal

Coastal flooding in Atlantic City, New Jersey on Friday. (Reuters News)

What a difference 24 hours can make in weather forecasting. Computer models had communities up and down the east coast from South Carolina to Nova Scotia in a state of emergency at the prospect of a land falling Joaquin. But now all models are predicting the storm to head out to sea and spare all of us a direct hit. Hurricane Joaquin remains a powerful storm this morning with 125 mph winds located 165 miles (270km) northeast of San Salvador, Bahamas. The storm pounded the northeast Bahamas for the last two days with fierce winds and heavy rain. Damage is extensive in the eastern portion of the Bahamas.

Meanwhile the news is not perfect for the east coast of the US. They are still dealing with a major upper level low over the southeast that is producing historic rainfall. Up to 2 feet of rain has fallen along the North and South Carolina border with more forecast. The rain has produced major flooding in the Carolinas. Along the coast high surf has produced widespread coastal flooding from Massachusetts to North Carolina. The heavy surf is a result of the flow of air around Joaquin and a persistent northeast fetch of air and water off the Atlantic. Strong high pressure located over Quebec is helping deflect Joaquin out to sea but is also producing the pressure gradient that is driving the Atlantic into the coast from the Maritimes south. Flooding is expected to continue throughout the weekend.

MONTREAL
The good news for Montreal is the only effects we will see from both Joaquin and the strong low over the southeast is a cool northeast wind up to 50km/h. Montreal and most of southern Quebec can expect nothing but sunshine as high pressure holds all weekend. Temperatures will range from 12 to 14C (52 to 56F) for daytime highs and cool plus 3 to 5C (38 to 41F) for overnight lows through Monday.

Joaquin now a major hurricane

A NOAA satellite image of a strengthening hurricane Joaquin in the central Bahamas early Thursday morning. 

It has been a rather quiet Atlantic hurricane season to this point, as is typical during El Nino years. But as forecasters always remind us, all it takes is one storm to make the season memorable or infamous. Will Joaquin be that storm? In less than 24 hours the system has gone from a tropical storm to a major hurricane. The Category 3 storm with winds in excess of 120 mph is drifting southwest in the central Bahamas this morning. The Bahamas will have strong winds, pounding waves and torrential rain for the next 24 hours. Joaquin is a small but dangerous storm for that region today with life threatening wind and rain. Beyond that the storm is forecast to move northward and increase in forward speed through Friday. Interests all up and down the east coast should be monitoring Joaquin. At this time computer models have the storm track all over the place from out to sea to landfall along the Outer Banks of North Carolina. An average forecast path takes the storm into the waterlogged middle Atlantic and eventually into New England and southern Quebec by Tuesday. That scenario is far away and Joaquin has several chapters to write before that point. I have been tracking Atlantic hurricanes since 1979 and will watch this one closely and update the blog as needed.

Before Joaquin arrives on the weather scene, Montreal is looking at much cooler air to start October but with plenty of sunshine. Temperatures are expected to be near the freezing point at night and into the low teens for highs through Saturday.

Major east coast rain event as Joaquin forms in Atlantic

A poorly timed cold front produced heavy rain and snarled traffic during the Tuesday evening commute in Montreal. (ValleyWX)

 Tuesday was very warm across southern Quebec, perhaps the last really muggy day of 2015. Temperatures reached 25C (77F) in Montreal, well above the normal high of 17C (63F). A cold front plowed into the St. Lawrence Valley during the evening commute with very heavy rain. Nearly 20mm fell in less than one hour in Montreal, with 35mm as of 7am this morning. As much as 51mm fell in Kemptville, Ontario with the frontal passage. Light rain continues in Montreal this morning, but the heavy rain has settled south along the US border and into New England. The front has stalled over those regions and is acting like a conveyor transporting copious amounts of tropical moisture into the northeast. Rainfall may exceed 100mm (4 inches) from Pennsylvania and New York into southern New England and the Maritimes. Numerous flood watches and warnings are on place including heavy rain warnings for the Eastern Townships. High pressure will slowly clear out southern Quebec over the next 24 hours, but it will be much cooler along with stiff northwest winds up to 50km/h. Low temperatures in Montreal will drop to 5C (41F) with highs around 14C (56F).

The current NHC forecast track for Joaquin.

Tropical Storm Joaquin
Another major player in the flood potential shaping up along the east coast will be the future track of tropical storm Joaquin. The storm developed in the Atlantic this week and is located 240 miles east northeast of the Bahamas this morning. Joaquin has 70 mph winds but is strengthening and will likely reach hurricane status today. Joaquin is expected to drift west southwest over the next 24 hours before moving north. The storm may impact portions of the eastern US and Canada beginning as early as Sunday with torrential rain. One forecast model has the storm approaching northern New England and southern Quebec by late Monday. Another has it remaining over the Atlantic. This storm will have to be monitored very closely, especially for coastal regions from North Carolina to Nova Scotia. The National Hurricane Center forecast models have Joaquin reaching Category 2 strength with winds in excess of 100mph. With most of the area from the middle Atlantic north being saturated with the current rain event, the potential for major flooding is very real.

A more fall-like weather pattern ahead for Montreal

A ship passes under the full harvest moon around 7pm along the St. Lawrence Seaway off L'Ile Perrot. (ValleyWX)

The lunar eclipse begins shortly after 8pm last evening. This photo was taken from L'Ile Perrot. (ValleyWX)

It was a beautiful night to watch the rising of the harvest moon and the total lunar eclipse on Sunday evening. The celestial event, 30 years in the making, did not dissapoint. I went to Pointe-du-Moulin on the tip of L'Ile Perrot and took the photos you see above and below. I was using my old reliable Canon Power Shot 35mm Digital with the zoom maxed out. It was a perfect night, warm temperatures for late September and just a light breeze lapping the waves against the shore, simply stunning.

The lunar eclipse reaches totality just after 10pm last evening. This photo was taken from L'Ile Perrot. (ValleyWX)

 COOLER WEATHER ON TAP
After what was basically an extension of summer during the month of September in Montreal, we are looking at a more seasonable weather pattern over the next few days. Monday and Tuesday will be cloudy with scattered showers and warm temperatures near 23C (73F). By late Tuesday a cold front will cross the region and tap into moisture moving up the east coast. Expect steady rain to develop by late in the day Tuesday and continue overnight. Amounts may exceed 25mm over Ontario, Quebec and New England. Skies will slowly clear Wednesday but it will turn much cooler with highs only in the middle teens. Temperatures will average below normal to end the week with even a risk of frost on a couple of nights as lows fall into the 2 to 4C (36-40F) range. More rain and cooler weather is possible to end the week. We may have just seen the last of the really warm air until next spring.

Lunar Eclipse weather update for Montreal

NASA.org

Excellent fall weather continues for much of southern Quebec this weekend. Temperatures have trended a touch cooler, especially the overnight lows. We start the morning at a chilly 5C (41F) here on L'Ile Perrot with just a hint of frost on some roof tops. Some rural areas in eastern Ontario and southern Quebec were as low as 1C (33F) with a light ground frost. It will warm rapidly today under a light southerly flow with high temperatures near 24C (76F). This will be the last really warm day for quite some time as cooler weather and showers are forecast this week.

LUNAR ECLIPSE
Tonight is the big super harvest moon (see story below). The largest and closest full moon of the year, will rise in Montreal at 6:36pm. The eclipse will begin around 8:45pm, reaching totality near 10:30pm. The weather looks perfect here in Montreal with clouds remaining to our south and west. Nothing but clear skies are expected, at least until midnight, when clouds will begin to increase. A lunar eclipse is safe to watch so enjoy the show.

Huge waves pound coastal highway 12 in Kitty Hawk, North Carolina. (OBX Voice)

COASTAL STORM
Those clouds are part of a large coastal storm that has been moving up the eastern seaboard. The system has brought heavy rain, high winds and round after round of high tides and coastal flooding from the Carolinas north. The combination of the supermoon and this storm are flooding portions of the Outer Banks of North Carolina. Tides can run as much as 30 percent above normal during a supermoon. Those tides along with the storm are pushing the Atlantic Ocean over the dunes and flooding portions of State Highway 12. Flooding has also been reported in South Carolina and along the coast northward into New Jersey.

Fall equinox, harvest supermoon plus a lunar eclipse

A stunning photo of the full supermoon from October 2014

What a celestial week it will be across North America. First, fall arrived in the Northern Hemisphere at 4:21 AM eastern time this morning. We have been greeted with another spectacular day to start the new season with the mercury pushing 25C (77F) this afternoon. It will be sunny all week and into the weekend as our record breaking September continues to unfold. When all is said and done this may turn out to be the warmest and brightest September ever for Montreal.

FIRST TIME IN 30 YEARS - SUPERMOON WITH A LUNAR ECLIPSE
That brings us to another spectacular and rare event that is set to take place this weekend. A full lunar eclipse will occur during the evening of Sunday, September 27th, visible across North and South America, Europe and Africa. It will occur with the moon in perigee, or the closest to Earth on its orbit during the entire year. This is known as a supermoon and this year it will coincide with the full harvest moon as well. The harvest moon is the first full moon that occurs after the Autumnal Equinox. It is already known as a big and bright moon, but this year it is expected to be 15 to 30 percent brighter depending on your location.

Only 5 times in recent history has this type if an event occurred with all the above mentioned factors in line; 1910, 1928, 1946, 1964 and 1982. The full harvest moon will rise at 6:42pm in Montreal Sunday night,  and will begin to dim at 8:11pm. The lunar eclipse will reach totality at 10:11pm. A lunar eclipse is safe to watch, so grab your camera and find a dark location, preferably away from the city lights. The moon will not be this close to the Earth again until November 2016.

Sunshine all week as summer comes to an end

A perfect end to summer is expected across southern Quebec, Ontario and New England.

Ontario, Quebec and New England will have a spectacular end to the summer and start to fall 2015. The warm and muggy air of last week was replaced by a cooler more seasonable airmass on Sunday after the passage of a cold front Saturday night. That front bought a modest amount of rainfall with as much as 12mm (0.5 inches) reported in southern Quebec. Isolated thunderstorms accompanied the front in Montreal Saturday evening, but no severe weather was reported. Strong high pressure is now in control of the weather with nothing but sunshine and warm temperatures all week. Across the entire region, expect highs in the 21 to 24C (70-75F) range with overnight lows from 5 to 9C (40-50F). The longer nights mean we may see some morning dew and fog around locally. This morning temperatures are the coolest they have been since last spring, L'Ile Perrot is at 6.7C (44F), while St. Anicet is only 3C (39F).

Looking ahead we have a rather rare celestial event on the night of September 27th. The full harvest moon will also be a "supermoon" and go through a total lunar eclipse. I will have much more on that later this week.

Perfect late summer weather to continue for Montreal

This NOAA water vapor image clearly shows the ridge of high pressure over the northeast US that is responsible for our perfect late summer weather. Sunshine and well above normal temperatures will prevail into Saturday for Montreal, while the clouds and rain remain well to our north and across the southeast US coast..

 Montreal is well on its way to another record high today as the temperature has already surpassed the long term average for the date, and it is only 10am. Montreal is currently 23C (73F) with a forecast high of 29C (85F) expected under sunny skies. The record high for today established in 1942 is 28.9C.

On Wednesday the temperature reached 28C (83F) at Trudeau Airport breaking the previous record of 26.8C (80F) set in 1991. The normal high for this time of year is 19C (66F). Strong high pressure centered along the Atlantic coast is responsible for the perfect late summer weather, and it will remain in place through Saturday. Late Saturday a cold front will bring some rain that will last into Sunday. Sunday will be cooler at 20C, but still above normal. Looking ahead to next week, sunshine and warm weather will return once again as we welcome Autumn on September 23rd. Temperatures will again reach the middle 20's. No cold air in in sight through the end of the month and even into early October for southern Quebec.

Warm weather returns to Quebec this week

It was a wet and at times stormy weekend in Montreal as a rather strong early fall storm system swept across the Great Lakes. It remains over northern New England this morning, slowly moving northeast away from the region. The system brought as much as 50mm of rain to parts of Quebec including 34.2mm here on L'Ile Perrot, 44mm to Trudeau Airport and 48mm at St Jovite. The rain was accompanied by cooler temperatures. A few breaks in the cloud cover Sunday afternoon in Montreal set up some isolated thunderstorms. A few were strong with heavy rain and plenty of lightning.

The system in question will slowly move away from Quebec today with showers expected this morning, slowly tapering off this afternoon. It will be another cool day with breezy conditions and high near 20C (68F). The good news for those who are not ready to say goodbye to summer, is we are in for a great stretch of weather. The last official week of summer 2015 will feature wall to wall sunshine with temperatures well above normal. Starting Tuesday highs will be in the middle 20's (77-80F) approcing 30C (86F) by Friday. Lows will be around 14C (57F). Scattered fog is possible in the pre-dawn hours each night.

Fire to flood: Wildfires are raging across portions of western North America and particularly in California. The fires have destroyed thousands of acres of land and hundreds of homes. California has been hot and bone dry for months. It is expected that the strengthening El Nino will bring widespread winter storms and heavy rain to the same region by the start of 2016. (AP Photo)

CALIFORNIA WILDFIRES
While the weather was wet in the east this weekend, it remains bone dry across portions of California and the west. Wildfires have spread across five states including hard hit California. Numerous homes were destroyed as thousands of firefighters battle the blazes.

Fall preview for Montreal this weekend

A cool, wet weekend is forecast for southern Quebec and New England.

 After record high temperatures and a very pleasant start to September, Montreal and portions of Ontario, Quebec and New England are in for a fall preview. A rather potent area of low pressure is forecast to develop today across the southern Appalachians and deepen as it moves northeast into New England. The system will bring an area of rain to Montreal along with cooler temperatures by late Saturday.

Friday will be a nearly perfect day with abundant sunshine and temperatures near 24C (76F). It will remain clear overnight with a low of 12C (54F). On Saturday clouds will increase from south to north with rain developing in the evening. It will be a little cooler with a high near 22C (72F). Saturday night and Sunday the rain will cover the entire region with perhaps over 25mm falling. Cooler temperatures will also prevail with lows in the middle teens and highs Sunday no better than 19C (66F). The start of next week will remain unsettled and cool before we see a return to sunshine and above normal temperatures by Wednesday into Friday.

Heavy rain along the US east coast produced flash flooding. The picture above is from Staten Island, New York on Thursday, September 10. (AccuWeather)

Early this morning heavy rain continues to fall across eastern New England and Atlantic Canada in response to low pressure located near New York City. This storm did not affect southwest Quebec, but did produce record rainfall from Philadelphia to New York City on Thursday. Anywhere from 1 to 4 inches of rain occurred (25-100mm) producing flash flooding in many locations and establishing numerous one day record rainfall totals. Those included Philadelphia with 4.76 inches and JFK in New York City with 1.18 inches.

The end of the heatwave is in sight for Montreal

Lightning illuminates the sky over L'Ile Perrot late last evening. The storms produced heavy rain and strong winds and provided some relief from a sultry day. (ValleyWeather Photo)

 That was one of the warmest Labour Day Weekends across southern Quebec and Ontario in quite some time. Montreal flirted with record highs both Sunday and Monday as the mercury hit 31C (88F) and 32C (90F) respectively, missing the record high by tenths of a degree. Other parts of the region were as warm as 34C (94F) and I recorded the second warmest day of the summer on L'Ile Perrot as the temperature hit 33C (91F) on Monday. The hot weather was accompanied by high humidity which helped to push the humidex value to 41C (106F) in Montreal Monday afternoon. These temperatures are well above the normal high for early September of 21C (70F). Even the overnight lows have remained warm in the low 20's in Montreal.

It was a spectacular Labour Day holiday to cruise the canal and boardwalk in Sainte-Anne-de-Bellevue. What a way to end the summer. (ValleyWeather Photo)

It was back to school and work Tuesday heralding the end of another summer. Despite that, it was another warm and very humid day reaching 28C (83F) so far this afternoon. It will remain warm and muggy overnight with lows remaining in the low 20's. Wednesday should be the last day of this heatwave as we are forecasting a cold front to arrive in southern Quebec late in the day. Hazy sunshine will give way to some welcome showers and thunderstorms with a high of 30C (86F).

Last night some air mass thunderstorms produced severe weather from eastern Ontario across metro Montreal. The storms prompted a tornado warning from Winchester, Ontario south into the Seaway Valley. In Montreal vivid lightning, strong gusty winds and torrential rain swept the region around 10pm. The storm deposited the first rainfall of September at my home on L'Ile Perrot where 18mm fell in under 30 minutes. Winds gusted up to 110km/h with the storms knocking out power to over 23,000 hydro Quebec customers. Those affected were mainly in the Lanuadiere region, but 5000 were affected in metro Montreal as well.

Spectacular weather for Labour Day weekend

Summer 2015 is ending on a high note across much of Eastern Canada and the northeast US. Sunshine and much above normal temperatures are forecast across the entire region.

A weak backdoor cold front brought in a little cooler and dryer air overnight in Montreal. No precipitation fell in the city and we have had none so far this month. After a 28C (84F) high on Thursday we dropped to 14C (58F) this morning. High pressure will re-establish itself along the Eastern Seaboard into the upcoming holiday weekend with nothing but sunshine forecast through Sunday. Temperatures will rise from a high of 25C (77F) today to as warm as 32C (90F) on Monday, which is well above normal for early September. The normal high in Montreal is 22C (72F). The threat for precipitation will increase by late Monday in the form of showers and thunderstorms as a frontal boundary crosses the Great Lakes into Quebec. The weather will remain very warm and humid into Tuesday before we see any appreciable cooling.

Incidentally despite the warm weather, the leaves are rapidly changing colour and in some cases even falling off the trees. As we have learned in the past, cooler weather and frost accelerates this process, however it is the change in daylight that actually reduces the amount of chloraphyll in the leaves and generates the color. The leaves would change colour even if is stayed hot into October.

Summer weather expected through September

A spectacular rainbow over Montreal late last week. Summery weather is forecast for at least the next week. (ValleyWeather)

Welcome to meteorological fall. I love September, in recent years the month has been a perfect mix of summer warmth, but with cooler nights for sleeping. It was not always that way for me, as a child it meant going back to school, and I loved summer too much. It seems that back when I was younger the start of September almost always introduced cooler fall weather. But in recent years, whether through global warming or other factors, September has become an extension of summer.

That brings us to September 2015 and an incredible spell of weather. High pressure is forecast to dominate the weather right through the upcoming Labor Day weekend. Each morning begins the same way with low clouds and fog developing. This is a result of the humid air and longer nights. Once the clouds burn off we can expect sunshine. The sunny weather will last into the weekend. The only glitch will be a weak backdoor cold front overnight tonight that will bring the threat for showers and thunderstorms. Thursday and Friday will be a touch cooler and less humid. High temperatures through next week will range in the middle to upper 20's with lows in the upper teens. The extended forecast is showing a very warm September with above normal temperatures and below normal precipitation for southern Quebec.

Warm end to summer for Montreal - 500,000 lose power in B.C. windstorm

MONTREAL WEATHER

Despite the calendar indicating summer is coming to an end, southern Quebec and metro Montreal are in for a warm and humid stretch of weather. High pressure will bring us lots of sunshine with increasing heat and humidity throughout the week. Temperatures will range from 27 to 31C (81 to 88F) with warm overnight lows of 17 to 20C (63 to 70F). These conditions are forecast right into Labor Day weekend. At this time the only chance for any precipitation may be Wednesday afternoon with a shower or thunderstorm possible.

A worker surveys a crushed car in Vancouver on Saturday. (CBC)

A fierce windstorm slammed the southern B.C. coast on Saturday with winds gusting to 100km/h. The combination of strong winds, a full canopy of leaves on the trees and drought brought down thousands of trees on power lines, cars and homes. One woman was seriously injured in Surrey when she was struck by a falling tree. B.C. Hydro reported nearly 500,000 without power at the height of the storm Saturday, most of those in metro Vancouver. That number has dropped to 90,000 this morning with crews working non-stop to remove trees and repair poles and lines. Damage will likely run into the millions of dollars if the pictures are any indication.

Vancouver on Saturday. (Photo: Jarett Kemp via Twitter.)

ERIKA and FRED
Meanwhile it was a busy weather weekend in the tropics with 5 separate systems. Two storms were in the Atlantic with three in the Pacific. Tropical storm Ericka moved across Cuba will weakening rapidly. This morning she is nothing more than a summer rainstorm soaking south Florida with up to 100mm (4 inches) or rain. Erika devastated the tiny island of Dominica on Friday with flash floods and mudslides killing at least 20 with 50 missing. On Saturday Fred developed and became a hurricane in the far eastern Atlantic. This is the first time a hurricane has developed so far east. Hurricane Fred is located 55 km south of the Cape Verde Islands this morning with 80mph winds. It is unlikely that Fred will affect North America at this time as it is expected to remain out at sea.

The 10th Anniversary of Hurricane Katrina

A striking image of a helicopter rescue in New Orleans, one of thousands in the days following Hurricane Katrina. The storm caused unprecedented death and destruction in August 2005.

It was 10 years ago on August 29th, 2005 that Hurricane Katrina roared inland in the pre-dawn hours near Waveland, Mississippi just east of metro New Orleans. The storm and its wild aftermath would become the worst natural disaster in modern U.S. history. I have been tracking Atlantic Hurricanes since 1979, and up until that morning in 2005, a little storm named Camille from 1969 was the benchmark hurricane along the Gulf Coast. Camille was the storm weather enthusiasts and those who follow hurricanes knew very well. Camille made landfall near Pass Christian, Mississippi on August 14, 1969 with a 20 foot surge of water and winds over 150mph. The storm virtually wiped out a portion of the Mississippi Gulf Coast along with the lives of 260 people.

Hurricane Katrina would far exceed Camille, reaching Category 5 status on the Saffir-Simpson scale, the strongest level in the Atlantic Basin, before "weakening" slightly just prior to landfall. The storm surge, the wall of water that precedes a hurricane, would reach an astonishing 28 feet almost at the same location as Camille. The surge swept away everything in its path, and put a tremendous strain on the levees that surround New Orleans. They would fail catastrophically and put 80 percent of the city under 20 feet or more of water and debris. Damage was complete in many communities and the death toll mounted rapidly with bodies floating in the streets. Officially 1800 would perish from the storm along the Gulf Coast, but unofficially over 3000 are estimated to have died or went missing in the storm and the human catastrophe that followed. It took several days for proper relief to arrive and years for the city to begin recovery. Damage estimates from Hurricane Katrina exceeded 100 billion dollars, the costliest natural disaster in US history. To this day deep scars remain in the city.

Katrina would move down the St. Lawrence Valley as a tropical depression with 75mm of rainfall in Montreal and 80km/h winds.

Major flooding in Dominica has resulted in at least 2 dozen deaths.
(pic via @machelmontano's instagram) 

ERIKA SLAMS DOMINICA
So it seems ironic that on the anniversary weekend of Katrina, we have another storm poised to impact the US coast. Tropical storm Erika is approaching the Dominican Republic this morning with 50mph winds. Heavy rain is forecast along the track today with very little change in strength. If the storm holds together in a less than friendly environment, it will approach the Florida east coast early next week. Although weak in nature as far as tropical systems go, Erika produced over 1 foot of rain on the tiny island of Dominica triggering massive floods. The island has been devastated in the last 24 hours with over 24 deaths reported.