We are watching the risk of some thunderstorms, mainly non-severe, across much of Southern and Central Saskatchewan including portions of Eastern Alberta.
A low-pressure system will slide south through Saskatchewan bringing alongside it some widespread, non-severe thunderstorms. These thunderstorms may extend into portions of Alberta. The storms should be mainly non-severe with gusty winds, heavy rain and possibly some small hail.
Across portions of Saskatchewan, there is the risk of some isolated stronger storms which may be capable of producing funnel clouds and isolated landspout tornadoes. The area seen in blue or marked with a '1' in the forecast maps are at risk of seeing some non-severe thunderstorms and possible funnel clouds. There is some question how far inland the thunderstorms will reach into Alberta, therefore, an isolated thunderstorm further west than shown in the map may be possible.
The best risk of funnel clouds and landspouts tornadoes will extend throughout Saskatchewan between Swift Current and Saskatoon extending south to Regina and Grasslands Park, including Moose Jaw. Funnel cloud advisories have been issued for a large portion of this region.
Landspout tornadoes can form from almost any thunderstorm. A landspout tornado is caused by a thunderstorm with weak rotation near the ground that is stretched by the development/growing of showers or more commonly, thunderstorms. This weak movement of rotation is enough to cause a landspout tornado. Landspout tornadoes are often more weak than a supercell tornado. Because of the quick nature of landspout tornadoes and the timing of when they often form, they are more difficult to catch on radar compared to supercell tornadoes.