With clear skies expected across the prairies on Saturday, daytime heating will to lead to severe weather developing overnight and into Sunday. Strong damaging winds and heavy rain with flash flooding are the main concerns. The situation may in fact become a "derecho" type event.
(A derecho (pronounced similar to "deh-REY-cho" in English, or pronounced phonetically as " ") is a widespread, long-lived wind storm. Derechos are associated with bands of rapidly moving showers or thunderstorms variously known as bow echoes, squall lines, or quasi-linear convective systems.) Source: http://www.spc.noaa.gov/misc/AbtDerechos/derechofacts.htm
Along the international border, storms are expected to be strongest and move east at a minimum of 80km/hr. It will move so fast that the storm system will start up in Montana Saturday night and end up in northern Ontario on Sunday morning. Since these powerful type of systems can cause widespread damage with gusts of between 100 and 120km/hr, areas near or around the main storm system will be affected. Heavy rains with supercell thunderstorms will precede the damaging wind event. Tornadoes and large hail are also possible ahead of the squall line.
Here is the latest graphic from the GFS storm model showing midnight Saturday's Supercell Composite Index:
As you can see in this second snip, the strongest areas of strength move all the way into northern Ontario by noon Sunday, only 12 hours after the first graphic, seen above.
Our preliminary risk map, outlining the area of most concern for Saturday night:
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- Storm & Wildlife Photographer.NON-PROFIT Volunteer Storm CasterRelay Of Severe Weather Alerts/ReportsRetail Marketing Team - Hudson's Bay CompanyKayaking, bird watching, fishing and wildlife photography are my summer hobbies when waiting for storms. See my adventures on YouTube!I build a daily map of storm risk for the Canadian Prairies to accomplish two things. One, translate the complications of the meteorologists into something simple that the public can understand clearly. Two, become a buffer on social media to either raise the alarm and calm the masses depending on the level of hype.Storm chasing is limited nowadays to a few photo ops by Wascana Lake in Regina or up north at Pratt Lake. Generally, I spend more time tracking storms from home and sharing forecasts and great footage on Twitter which saves on gas and keeps me safe in my studio/bunker.There are two seasons in my world, storm season and gaming season. April and September separate the two. I play FIFA, Sea Of Thieves and Fortnite with live streams on Twitch.tv/JaredSkStorm Ask me about sports, I am a fan and knowledge base of all things FIFA, Premier League, CFL and NFL (yes its all football).Thanks for all the likes, shares, comments and encouragement. Stay safe and enjoy the weather!Jared