Monday, July 28, 2008
Severe thunderstorms likely today
Thursday, July 17, 2008
Sunday, July 13, 2008
Unseasonably strong system whips Southern MB
Some peak wind gusts recorded yesterday included..
Oak Point Marine..... 94 km/h (east shore of Lake Manitoba)
Victoria Beach....... 91 km/h (east shore of Lake Winnipeg)
Brandon.............. 78 km/h
Dauphin.............. 78 km/h
Winnipeg............. 74 km/h
Gimli................ 69 km/h
Much better weather is in store today with sunny skies and lighter winds. After yesterday, we deserve it.
Friday, July 11, 2008
July 11 1936 - Winnipeg's hottest day
|Front page of the Winnipeg Evening Tribune, Monday July 13 1936|
after Winnipeg's hottest and deadliest weekend on record
|Reconstruction of hourly temperatures in Winnipeg on July 11 1936|
Hourly temperatures are estimated based on 3 known values that day
during the July 1936 heat wave
High temperatures (F) - North Dakota - July 6 1936
The hottest day in North Dakota history set all time highs
in Bismarck and Fargo (114F), as well as the state (Steele, 121F)
|Official weather obs for Moorhead MN (near Fargo) for July 6 1936|
The form notes an all time record high of 114F was set at 3:15 pm that afternoon
|It was so hot during the 1936 heat wave, may residents were forced|
to sleep outside. This scene was from St Paul Minnesota
More severe storms this afternoon.. Fall-like Saturday
Southern MB remains under a severe thunderstorm watch this afternoon as a low pressure system over eastern North Dakota draws a warm and humid airmass northward. Morning thunderstorm activity has pushed into the northern Interlake this afternoon, while the south gets a temporary reprieve from the severe weather. However, as the North Dakota low moves into southern MB later today, a flow of warm and humid air will be drawn over southeast MB while a cold front pushes in from the west. This will set the stage for additional severe thunderstorms to develop, especially over the Red River valley and southeast MB. Strong winds and large hail will be the main threat, however favourable wind shear profiles over southeast MB may give the threat of tornadoes with any supercell thunderstorms that develop.
As this low pressure system moves north into the Interlake tonight, it will deepen into an almost fall-like storm by Saturday morning with strong west to northwest winds developing on the backside of the low. Gale warnings have been issued for the MB lakes with west to northwest gales of 40 knots forecast for Saturday. This will likely generate large waves over the south basins of Lakes Winnipeg and Manitoba with possible shoreline erosion problems on eastern and southern shores. Temperatures will also be unseasonably cool Saturday with highs only in the mid teens along with occasional rain making it feel more like September than mid July. Not a good day for Grand Beach unless you like windsurfing!
Wednesday, July 09, 2008
Severe storms Thursday evening?
Looks like another setup for possible severe thunderstorms to develop across Southern MB late Thursday into Thursday evening. A low pressure system and trough will be moving across southern SK Thursday moving to the SK/MB border by Thursday evening. A warm front extending east of this system will lie across the MB/ND border by evening which will be the focus for thunderstorm development. South of the warm front, warm and humid air will be advecting north from the Dakotas and will nose into Southern MB especially south and west of Winnipeg. Favourable low level wind shear and an increasing jet stream aloft will set the stage for supercell storms to develop across the Dakotas and southwest MB, with the potential for large hail and possible tornadoes. The limiting factor in this setup will be how much moisture can de drawn into this system in a short period of time, since dewpoints are quite low across the northern Plains today. As a result, the severe weather threat may be late Thursday before sufficient moisture can be drawn into this system. Stay tuned..
Thursday, July 03, 2008
Thunderstorms possible Saturday evening
Hot weather will be returning to southern MB over the next couple of days with highs approaching 30 degrees Friday, likely reaching the low 30s on Saturday. Saturday will also see increasing humidity levels as southerly winds tap more humid air to our south and advect it north. This will set the stage for possible strong to severe thunderstorms to develop by Saturday evening over the Red River valley as a weak cold front approaches from the west. Behind the cold front, more comfortable conditions will return for Sunday with seasonably warm and less humid conditions.