UPDATE #2 Next Big Storm System: July 18th and 19th, 2023

 Checking the GFS forecast model, today's 12z update, the supercell composite continues to show an area of southern Saskatchewan, southern Manitoba, Montana and the Dakotas in the mix for supercell action from July 18th to July 19th for Canadian provinces, and continuing further south into the states July 20th.

 

Smoke Enhibiting Thunderstorm Convection/Clearing Up This Evening

Forest fire smoke is expected to clear up overnight. Thunderstorms had a tough time getting started and likely played a part in a huge area getting zero thunder clouds. Extreme southeast Manitoba is the only place getting the rain and thunderstorms so far. 636pm

Comparing Models to Actuals / Major Manitoba Wind Storms TODAY

Here is todays expanded outlook, NAM Nest is showing action in Saskatchewan, hrrr is calling for big time winds in southern Manitoba. Storms may be discrete, fast moving and tightly packed with a huge punch depending on how close you are. A few very tiny spots on the wind gust map are indicating wind gusts up to 73 knots / 135km/hr in the bright yellow to white spots on the blue map in the red circle. It actually looks like it hits Winnipeg and splits on the hrrr but nothing is suggesting that on current radar or the high resolution NAM Nest. Beware of the potential for high winds if driving along the number 1 highway in southern Manitoba. Stop and wait a few minutes for these storms to pass. They will be destructive as hell.

Chance of a tornado in some of these storm cells, low end.

Potential storm north of Regina according to the nest,

Hrrr disputes that and is tossing everything at Winnipeg.

So far radar is mostly clear with watches issued.

 

Sunday's Outlook, Potential For Tornadoes

Tornado risk looks pretty low however the size and shape of these storm cells could make for some spectacular skies for the Yorkton to Brandon regions from 4 to 6pm tomorrow.

 

Long Term Outlook GFS Goes Crazy July 18th,19th Supercell Composite

As it warms up again, the GFS is starting to bring July 18th in with maximum intensity. The next wave of systems is trying to start earlier now, when it hits the peak, we may see storms of the "once in a century" type. This is going to be BIG. #skstorm #ndwx #sdwx