Scott Kehler 🇨🇦

Keep an eye out for severe weather today!

Urban heat islands can impact thunderstorms in certain situations. However, a "cap" generally occurs over a broad area and urban influences would be too small to play a role.

The smoke is really bad today! Probably the worst we’ve seen this year.

The 18Z weather balloon from the University of Manitoba shows a substantial cap preventing convection over the Red River Valley. However, this cap will weaken as the day progresses and thunderstorms are still possible in southern Manitoba this evening and tonight. #mbstorm

There are severe thunderstorm watches in southwestern Manitoba this evening where severe storms are currently ongoing. The risk of severe weather hasn't arrived in the Winnipeg area yet, but we could see watches spread eastward tonight/tomorrow as the threat shifts east.

Also, note that the rest of southern Manitoba is at risk of severe weather overnight and into tomorrow. Although no other storms have developed so far.

Two dangerous tornado-warned supercell thunderstorms are currently right along the Manitoba/Saskatchewan border. If you are in southeastern Saskatchewan or southwestern Manitoba, keep an eye on the weather this evening! #mbstorm #skstorm

A summer storm in southern Manitoba.

Well...that's a tough call. Eastern MB could use the rain but this pattern is so nice otherwise!

This outlook isn't great for the wildfire situation because there is no rain in the forecast. However, light winds and relatively cool nights will at least allow crews to make some progress.

Southern Manitoba is entering a period of calm, quiet, and normal weather. High temperatures will end the week mostly in the upper teens to near twenty, then increasing into the low-mid twenties from the weekend into early next week. Winds will remain light and skies mostly sunny

About 25-30 mm

Some of the totals may be past 24 hrs and others may only be since midnight. This map shows storm totals over the past 72 hours, which will give you a better idea:

The map above shows 9 AM temperatures in red and daily precipitation in bold blue (millimetres).

Southern Manitoba's wild week of weather continues. We started the week with the earliest 100 F (37.8 C) temperature reading in Canadian history. This morning, we have temperatures near 0 C in western Manitoba and perhaps even the odd flake of snow!

A good reminder that statistics often don’t tell the whole story!

Previous record was 33.3 C in 1900.

A weak cold front just passed through Winnipeg, dropping the temperature by a few degrees and switching the wind to northwesterly.

Winnipeg’s high today will stand as 37.0°C — tying the second hottest May day on record. The only hotter day was May 30, 1934 when the city reached 37.8°C.

It’s also the earliest Winnipeg has ever hit 37°C, shattering the daily high temperature record in the process.

As of 3:30 PM we're now tied for second hottest May day (high 37.0 C).

Today is now the third hottest May day on record in Winnipeg with a high of 36.9 C up to 3 PM. We aren't far off the records for hottest or second hottest days:

Hottest May temperatures in Wpg:

1. May 30, 1934: 37.8 C
2. May 22, 1980: 37.0C
3. May 13, 2025: 36.9 C (up to 3PM)

Winnipeg's high up to 2 PM today was 36.3 C, which is the earliest on record such a temperature has occurred. This beats the previous record, set yesterday, when the high was 35.6 C!

Extreme fire danger continues today in Manitoba with strong southerly winds and temperatures climbing into the thirties. As of 12 PM CDT, there are at least four significant fires burning (circled in red; smoke as arrow) in southeastern MB or adjacent parts of NW Ontario.

Winnipeg has set a new daily record high for May 12. As of 3 PM, the temperature had reached 34.1°C, surpassing the previous record of 32.8°C set in 1958. There's another chance to break a record tomorrow—the May 13 record stands at 33.3°C, set in 1900.

One day. Just posted more about the record.

Note: In 1900, temperatures in Canada were officially measured in Fahrenheit. Therefore, the high in St. Albans on May 12, 1900 was recorded as exactly 102 F, but later converted into Celsius as 38.9 C.

I was able to independently confirm yesterday's temperature record in Emerson. The high in Emerson was 37.8 C on May 11, 2025, which is the earliest 100 F reading in Canadian history. The previous record was 38.9 C (102 F) on May 12, 1900 in St. Albans, MB (SE of Brandon).

I am seeing the same thing. After iterating over every climate station in the country, the only earlier days were erroneous readings at Fort Albany, Ontario in March 1985.

Yep…although we are going to be in desperate need of moisture after this heatwave, even if it’s white!

I am also sad to report that the @winnipegjets.com continue to struggle with temperatures above 30 C. With today’s loss they have yet to notch a win above that mark!