Isolated pop-up thunderstorms are expected across Alberta during the afternoon and evening on Monday. A few of these storms may reach severe levels particular in South-central Alberta between Calgary and Edmonton. Main risks include 90 km/h wind gusts, quarter-sized hail and an isolated tornado can’t be ruled out.
Scattered non-severe thunderstorms are possible throughout the afternoon and evening on Sunday across much of Southern Alberta.
Scattered pop-up non-severe storms are possible in Extreme Southern Alberta during Saturday afternoon and evening. The threat for storms include Medicine Hat, Lethbridge, Brooks and High River.
Thunderstorms are currently not expected across Alberta on Friday.
Thunderstorms are currently not expected across Alberta on Thursday.
There is the risk of isolated thunderstorms in Southeastern Alberta along the Saskatchewan border on Wednesday during the afternoon. Some of these storms around Medicine Hat could reach severe levels with quarter-sized hail, 90km/h wind gusts and potentially even funnel clouds or a landspout before they track into Saskatchewan.
Landspout: A landspout is a type of tornado that forms under a weak thunderstorm. Unlike traditional tornadoes, which develop from supercell thunderstorms and are associated with a rotating updraft called a mesocyclone, landspouts form from non-supercell storms and do not have a mesocyclone. These tornadoes are generally weaker and shorter-lived than their supercell counterparts but can still pose a threat to property and life, with wind speeds occasionally reaching up to 160 km/h.
Pop-up non-severe thunderstorms are possible on Tuesday afternoon and evening to the northwest of Edmonton. This includes Whitecourt, Edson, Westlock, Slave Lake and High Prairie. While these storms will be non-severe, there is the potential for funnel clouds and maybe even a landspout.
Landspout: A landspout is a type of tornado that forms under a weak thunderstorm. Unlike traditional tornadoes, which develop from supercell thunderstorms and are associated with a rotating updraft called a mesocyclone, landspouts form from non-supercell storms and do not have a mesocyclone. These tornadoes are generally weaker and shorter-lived than their supercell counterparts but can still pose a threat to property and life, with wind speeds occasionally reaching up to 160 km/h.
There is the risk of severe thunderstorms in parts of Alberta. This is an isolated severe risk for the most part, although the latest data indicate a more elevated risk around the Saskatchewan border which is why we’ve added a slight severe risk to our map for the Edmonton, Red Deer, Lloydminster and Medicine Hat regions. Storms will start by Monday afternoon and will continue to move eastward throughout the evening. The main risks are up to 3cm size hail and 100+ km/h wind gusts. There is also the potential for an isolated tornado associated with these storms.
Thunderstorm activity is expected across Alberta on Sunday afternoon and evening. These storms should remain non-severe with small hail, strong wind gusts and frequent lightning strikes.
Pop-up thunderstorms are expected to develop across much of Alberta for a second day on Saturday afternoon and early evening. At this time it appears that all storms should remain non-severe.
There is the potential for pop-up thunderstorms across much of Central and Southern Alberta on Friday afternoon. These storms will track eastward throughout the day and cross out of the province by the evening. While the storm threat should remain non-severe for the most part, there are some indications about an isolated severe risk to the east of Calgary and Red Deer. Locations including Camrose, Drumheller, Strathmore and Brooks may see moderate size hail, 90 km/h wind gusts and maybe even an isolated landspout. The rest of the province should see just non-severe storms.
Landspout: A landspout is a type of tornado that forms under a weak thunderstorm. Unlike traditional tornadoes, which develop from supercell thunderstorms and are associated with a rotating updraft called a mesocyclone, landspouts form from non-supercell storms and do not have a mesocyclone. These tornadoes are generally weaker and shorter-lived than their supercell counterparts but can still pose a threat to property and life, with wind speeds occasionally reaching up to 160 km/h.
Thunderstorms are currently not expected across Alberta on Thursday.
Thunderstorms are currently not expected across Alberta on Wednesday.
Isolated pop-up storms are possible in Extreme Southern Alberta (near the US border) and along the Rockies during the afternoon and early evening on Tuesday. These storms should be pretty weak with small hail and a few lightning strikes being the main threats. However, the environment is favourable for the development of funnel clouds. In rare cases, these funnel clouds may touch down and become a landspout. We’ve highlighted the highest potential for landspouts with an ‘isolated’ severe risk on the map.
Landspout: A landspout is a type of tornado that forms under a weak thunderstorm. Unlike traditional tornadoes, which develop from supercell thunderstorms and are associated with a rotating updraft called a mesocyclone, landspouts form from non-supercell storms and do not have a mesocyclone. These tornadoes are generally weaker and shorter-lived than their supercell counterparts but can still pose a threat to property and life, with wind speeds occasionally reaching up to 160 km/h.
Thunderstorms are currently not expected across Alberta on Monday.
Thunderstorms are currently not expected across Alberta on Sunday.
Thunderstorms are currently not expected across Alberta on Saturday.
Thunderstorms are currently not expected across Alberta on Friday.
Pop-up thunderstorms are possible along the Rockies and into Central Alberta including Calgary, Red Deer and Edmonton. These storms should remain non-severe with small hail as the main threat. However, there is the potential for funnel clouds and even an isolated landspout.
Landspout: A landspout is a type of tornado that forms under a weak thunderstorm. Unlike traditional tornadoes, which develop from supercell thunderstorms and are associated with a rotating updraft called a mesocyclone, landspouts form from non-supercell storms and do not have a mesocyclone. These tornadoes are generally weaker and shorter-lived than their supercell counterparts but can still pose a threat to property and life, with wind speeds occasionally reaching up to 160 km/h.
Pop-up thunderstorms are expected during the afternoon and evening on Wednesday across Alberta. Parts of Central Alberta including Olds, Red Deer, Leduc and Edmonton have the potential to see an isolated severe storm with up to 2.5cm hail and 90km/h wind gusts.
While tornadoes aren’t expected, these storms do have the potential to produce funnel clouds and perhaps even a landspout.
Landspout: A landspout is a type of tornado that forms under a weak thunderstorm. Unlike traditional tornadoes, which develop from supercell thunderstorms and are associated with a rotating updraft called a mesocyclone, landspouts form from non-supercell storms and do not have a mesocyclone. These tornadoes are generally weaker and shorter-lived than their supercell counterparts but can still pose a threat to property and life, with wind speeds occasionally reaching up to 160 km/h.
