Today's Risk Map - "Extreme Instability"

Something to keep an eye on today... extreme instability along the international border should keep the risk of tornadoes about the Montana/North Dakota/Saskatchewan border intersection. The heavy rains are expected in south western Saskatchewan this morning and burn off with day time heating. Storms will fire up later this afternoon in Montana and remnants could drift into the southern most area of south east Saskatchewan. Risk of storms will be highest after 6pm for Estevan.

Today's Risk Map: #skstorm #mbstorm

Moderate Risk for areas along the southern Manitoba/Saskatchewan border. Chance of a tornado, large hail, damaging winds and intense lightning. Storms are expected to initiate rapidly around 3pm in south east Saskatchewan and strengthen as they move northeast into southern Manitoba. Peak intensity of these storms will be between 3pm and 8pm.

Storms Ramping Up Today, Look Out For Tomorrow!

Widespread severe thunderstorms late this afternoon, strengthening into the evening and then running all night. Hot and humid air today will give rise to strong thunderstorms including supercells with golfball size hail and wind gusts up to 100km/hr. On Thursday morning, the remnants of today's storms will quickly emerge in south east Saskatchewan and move into southern Manitoba with near maximum force. This will be a dangerous situation. Areas from Yorkton to Winnipeg should prepare now for extremely severe weather tomorrow afternoon and into the evening.

Moderate Risk Today: Calgary Area [Today's Risk Map]

Moderate Risk today for areas along the dry line between Sundre and High River, Alberta. This carries a risk of an isolated tornado to go along with supercell thunderstorms reaching strengths of 110km/hr wind gusts and hail up to 4cm or an inch and half. Take all Environment Canada warnings and watches seriously today and stay extra weather aware if you are in areas along the foothills of Alberta today.

Busy Week Ahead! Lets Start In Alberta...

High based supercell thunderstorms in west central Alberta today with risk of golf ball size hail and wind gusts up to 100km/hr. #abstorms This system is expected to gain strength as it comes off the foothills and cross the prairies this week. The risk moves south east tomorrow into southern Alberta and western Saskatchewan. Long term forecast models have shifted Wednesday and Thursday back and forth between Manitoba and southern Saskatchewan for an enhanced risk of extremely severe thunderstorms. We continue to monitor the situation closely but for sure something big is brewing for later in the week.