Friday, July 31, 2009
As the month comes to an end the statistics are showing just how awful a July it was. Ottawa recorded an amazing 243mm of rain as of today, and Montreal 117mm. In Montreal measurable precipitation was recorded on 26 days this month including the first 8 days. 26 out of 31 days with at least a trace of precipitation, and cloud cover as well. We had one 30C day and that was 30.3C this week on the 29th. Just terrible! Thunderstorms rattled around and we even had a tornado.
August will begin the same way. Sunny on Saturday and 28C, very nice, but then showers and thunderstorms Sunday and cooler. Next week looks unsettled with the same patter we have had all summer.
The heat is out west. Yesterday Vancouver hit 34C for the second day in a row, and parts of the B.C. interior were close to 40C, actual air temperature. Now that is summer!
Wednesday, July 29, 2009
Monday, July 27, 2009
The air is saturated across southwest Quebec and eastern Ontario this morning. Dense fog is reported in many locations, reducing visibilities to less than 1km locally. That should burn off slowly, allowing the sun to begin mixing the air. A front will slide across the region later today triggering more showers and thunderstorms. The biggest threat from these storms will be the same as yesterday, heavy rain. Thankfully the storms were quick moving in most locations yesterday, so rainfall amounts were limited and flooding was kept down. Still, radar estimates show between 15-25mm across upstate New York in a very short period of time and observations from the South Shore here in Montreal show amounts up and over 40mm, Montreal (Dorval) recorded 19mm. The rain produced flooding along Highway 15 south of Montreal, and one lane remains closed this morning.
This weather pattern will be in place most of the week before a dryer and slightly cooler air mass moves in for next weekend. With any luck we may actually have a dry and sunny weekend to start August. We will then say goodbye to one of the coolest, dullest and rainiest July's on record!
Sunday, July 26, 2009
SEVERE THUNDERSTORM WATCH in effect for Montreal and southwest Quebec.
It was another wild weather day across northern New York and southern Quebec today. Severe thunderstorms have been occurring all day, with very heavy rain. Radar is showing an intense line of thunderstorms with spectacular lightning moving into the Montreal area at this hour. The storms are moving northeast at 40km/h. I am watching the lightning to the southwest and it is illuminating the entire sky at a frequency of at least one flash every 30 seconds.
Friday, July 24, 2009
The heavy rain has remained south and east of Quebec in New England, where tropical moisture has prompted flood advisories for southern New Hampshire, Vermont and Maine. Over 100mm of rain is possible in some locations. West of our region the Great Lakes low is producing thunderstorms which may edge into our region today.
Thursday, July 23, 2009
Wednesday, July 22, 2009
That tropical moisture will also affect New England where flooding concerns are very real for the next few days. The system of concern in the Atlantic will be watched for further development over the weekend.
Tuesday, July 21, 2009
Monday, July 20, 2009
Today will be sunny, warm and DRY. The rest of the week will be warm and humid with lots of showers and thunderstorms around right into the upcoming weekend. Temperatures will warm to close to 27C each day with humidex readings over 30C. A little more summery but sadly showery as well.
Both Saskatchewan and southern Alberta were hot and stormy over the weekend with temperatures approaching a sultry 40C in places and reports of hail and funnel clouds as well. Forest fires continue to rage in the hot weather in interior British Columbia.
Friday, July 17, 2009
Thursday, July 16, 2009
Saturday at this time looks like a washout with 15-25mm of rain in Montreal and the Ottawa area. The good news is that next week looks much better with a round of summer weather on the way. High pressure building into the Prairies today will move east and off the Atlantic coast next week. The return flow will bring much warmer and dryer weather to our region.
Speaking of the Prairies, it is only 5C this morning in Regina. But they are forecasting a high of 20C and into the 30's over the weekend.
Wednesday, July 15, 2009
Tuesday, July 14, 2009
Sadly more rain today as our year without a summer moves along. We have recorded 88mm of rain to July 13 in Montreal and an average temperature of only 23C, well below the normal of 27C for this time of year. Only one 30C day has been observed. The showers, thunderstorms and clouds will continue this week, with only tomorrow being sunny all day. Yesterday more storms rolled through the metro area with hail here on the West Island and over 11mm or rain in less than an hour.
This morning I took the photo above at 6:30am of a rainbow over Montreal. Maybe it is a sign of changes to come. Stay tuned!
Monday, July 13, 2009
Sunday, July 12, 2009
Environment Canada has confirmed that the damage caused in Boisbriand and St-Eustache last night was from an F-1 Tornado on the Fujita Scale. Kudos to Environment Canada for handling the warnings last night, and for getting a team on the ground today. Tonight more thunderstorms are developing in Eastern Ontario and moving east. They are very weak and will only produce rain and some lightning. They should affect Montreal after 9pm.
Here is the official statement from Environment Canada:
AWCN40 CWUL 121734 Summary of significant weather events for the province of Québec issued by Environment Canada Montréal, Sunday, 12 July 2009....
Confirmed tornado... Severe thunderstorms moved across the Upper Laurentians between 07:00 PM and 08:00 PM Saturday evening July 11 2009. According to reports from voluntary observers and the Mirabel airport, a funnel cloud touching the ground was seen under the base of the clouds and several damages have been reported in St-Eustache and Boisbriand. An expert from Environment Canada was sent on site this morning, Sunday. He noticed many uprooted trees along a well defined corridor. Some of them had fallen over houses, causing indirect damages. Minor damages on some roofs have also been reported. According to the witnesses and the position of the debris, the expert determined that the tornado was a weak F1 category, with winds of about 120 km/h. Please note that this summary contains the observations available at broadcast time but does not constitute an official and final report of the weather events.
Saturday, July 11, 2009
Radar is showing the last of the thunderstorm cells moving through the region and east of the city or south into New England and New York. The watches and warnings will be allowed to expire with most activity ending by midnight. Twin cold fronts produced flooding, hail, tornadoes and intense lightning across the region today. What a weather day it has been!
Heavy rain, thunder and fierce lightning continue across Montreal. I will post pictures after. The severe weather will continue for another two hours. Warnings remain in effect.
Environment Canada has issued a Tornado Warning for Montreal the north shore including St. Eustache, Vaudreiul, as well as the South Shore effective until 9pm. A trained spotter has reported a tornado and funnel cloud near Mirabel. This cluster of storms is indicating a hook echo on radar and is moving southeast towards Montreal Island.
TORNADO WARNING: Metro Montréal - Laval Issued at 8:13 PM EDT SATURDAY 11 JULY 2009
WEATHER OBSERVERS HAVE REPORTED A TORNADO AT 07:15 PM IN MIRABEL AND AT 07:30 PM IN ST-EUSTACHE AND AT 07:40 PM IN BOISBRIAND.
THE HEAVY THUNDERSTORM CELL IS MOVING EASTWARD AND THREATENING THE ABOVE AREAS OF THE SOUTH SHORE AND MONTREAL. A SECOND INTENSE THUNDERSTORM CELL NEAR HAWKESBURY IS MOVING EASTWARD AND SHOULD ALSO PRODUCE A TORNADO OVER THE OTHER CONCERNED AREAS. GUSTS OF 100 KM/H OR MORE, AND POSSIBLY HAIL OF 2 CENTIMETRES OR MORE AND FREQUENT LIGHTNING ARE ASSOCIATED WITH THIS STORM COMPLEX. PLEASE TAKE IMMEDIATELY THE NECESSARY PRECAUTIONS AND LISTEN FOR UPDATES OR SUBSEQUENT SEVERE WEATHER WARNINGS. THIS WARNING IS IN EFFECT FROM 08:10 PM TO 09:10 PM EDT.
Friday, July 10, 2009
It looks like all the elements are present for a severe weather outbreak in Eastern Ontario and Western Quebec on Saturday. A strong cold front with a powerful jet stream will be approaching from the west. Humid air will be in place, so we can expect thunderstorms to develop Saturday afternoon, first in Ontario then in our region. Heavy rain and gusty winds will be the main threat. Winds will be out of the southwest at 30-50km/h most of Saturday, with gusts to 90km/h possible in any severe weather that develops.
Sunday will clear out, be calm and a little cooler, before more showers next week. The pattern that has brought us our soggy summer shows no signs of breaking down for the next week at the very least.
More tonight on the severe weather threat as well as El Nino and the Bermuda High.
Thursday, July 09, 2009
This morning there is some fog across rural areas of Montreal, western Quebec and eastern Ontario. That should burn off very soon if it has not done so already.
Wednesday, July 08, 2009
I wish I had better news, but it looks like more of the same weather today, with a respite Thursday and Friday, sunny and 26C, and then a similar pattern developing this weekend into next week with showers and humid.
Tuesday, July 07, 2009
Monday, July 06, 2009
Out west the severe weather continues with heavy rain in Alberta, up to 150mm may fall this week. Tornadoes and funnel clouds were reported again in Alberta and Saskatchewan over the weekend. No injuries or damage occurred.
Friday, July 03, 2009
Thursday, July 02, 2009
There is a risk of funnel clouds or even waterspouts near the Great Lakes.
The weekend sadly looks the same, showers and cooler, near 21C
Wednesday, July 01, 2009
It has been a wonderful day so far in Montreal. We reached 25C under mostly sunny skies with developing cumulus clouds and very muggy (Humidex 31C). Radar is showing heavy thunderstorms developing in Franklin and Clinton County in New York and moving north into southern Quebec. These storms will continue to develop this afternoon into this evening up until sun set and the air becomes a little more stable. The same scenario will repeat itself tomorrow. All of upstate New York is under a Severe Thunderstorm Watch and Franklin County is under a warning at this hour. These storms are producing lots of lightning, gusty winds and heavy rain. Hail has also been reported.