Severe storms possible for overnight
AFTERNOON UPDATE: Storms are now active across the region:
Carrying into the later afternoon, storms will likely intensify beyond the warning-relayed nickel-sized hail. Calgary, too, despite being in the development zone, could see a storm manifest over part of the city. Hail would be the major threat, were this to occur.
Rainfall totals are steady for Calgary, with around 20 milimetres likely by Friday afternoon; the longer-range forecast now shows the tail of our sunnier period, with showers on the way Tuesday.
MORNING EDITION: Today offers dangerous conditions in parts of our province.
The lee low coming down from the Rockies west of Red Deer will make a sweeping advance across the prairies, clipping at a good pace into Saskatchewan by this evening. Along the way, it’ll scoop up everything it needs to generate severe storms and, similar to yesterday, supercells along a similar corridor.
The noteworthy adjustment will be in these storms maturing to potential tornado development. Tornado watches in Central to East-Central Alberta aren’t out of the question, nor would warnings be.
Hail sizes in the severe thunderstorm warnings yesterday hit ping pong to golf ball sized – this is solely from the warning status! I didn’t see photographs floating about. Regardless, conditions are similar today. Two to four centimetres of hail is possible in supercell regions, along with warning-level (90+ km/h) wind gusts.
Added to this, I mentioned Central Alberta could see heavy rain yesterday – that’s now on the books, with 40 to 60 milimetres expected:
More is possible in isolated regions; a few spots will likely crest 70 milimetres.
For all of this, I have yet to speak of Calgary! Storm-wise, our city is once again in the development zone; storm energy will roll free of the foothills and traverse eastward, from which we may see isolated thundershowers. Rainfall-wise, showers build this morning, then (coupled with storms) from the mid-afternoon to the evening. 10 to 20 milimetres remains the standard, with the majority of showers wrapping up by noon tomorrow. Thereafter, we rise into high pressure and sunshine for the weekend.
Your five day forecast:
Thursday
- Evening: showers, low 6 C
Friday
- Cloudy, morning showers
- Daytime high: 15 C
- Evening: clear, low 6 C
Saturday
- Sunny
- Daytime high: 19 C
- Evening: clear, low 9 C
Sunday
- Sunny
- Daytime high: 24 C
- Evening: clear, low 10 C
Monday
- Mainly sunny, risk of pm showers
- Daytime high: 24 C
- Evening: scattered showers, low 12 C
Tuesday
- Mainly cloudy, showers
- Daytime high: 19 C
- Evening: scattered showers, low 9 C
Our pics of the day are from Tracy in Oyen of yesterday’s storms!
Submit your weather photos here to see them featured in our article, and perhaps even as the pic of the day during our news at six! You can also share my way on Twitter, or to our Instagram at @CTVCalgaryWeather.
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