Tag: Rain

Complex Low To Bring Cooler Temperatures & Chance of Rain

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A complex low pressure system will bring cooler temperatures and a chance of rain to Winnipeg and the Red River Valley on Thursday night through Friday.

Winnipeg’s long-lasting dry spell may be coming to an end in the next couple days. A complex low pressure system that will involve two disturbances moving into the region will bring the first significant chance for rain in over a month as it moves into the region on Thursday night. The details are tricky, however, as this low will involve two disturbances: one pushing eastwards across the Prairies from Alberta and a second from the American Plains. These two features will approach Manitoba and merge together Thursday night into Friday. But first…

Today will bring seasonably mild temperatures with a high near 21°C, but a brisk northerly wind of 20 to 30 km/h will keep just a slight chill in the air. A few clouds will be around, but overall it will be a fairly sunny day. More cloud will move into the region overnight as temperatures dip to a low near 11°C.

Thursday will see the incoming low pressure system move from eastern Montana into western North Dakota. Winds in Winnipeg will shift to easterly at 20 to 30 km/h as temperatures head to a high near 19°C under mostly cloudy skies. There will be a slight chance of showers or thunderstorms on Thursday morning as nocturnal convection tapers off. The rest of the day will remain mainly cloudy. Thursday night will bring overcast skies and a low near 10°C. The chance for rain will redevelop over Winnipeg & the Red River Valley overnight.

GDPS 24hr QPF Forecast valid 06Z Saturday May 19, 2018
Several weather models are beginning to show signs that a notable rainfall event may develop over southern Manitoba Thursday night to Saturday.

Thursday night into early Friday morning, followed by Friday afternoon into the evening, will bring the best chance for showers [or thunderstorms]. Temperatures will be cool, steady near 10°C, with winds picking up out of the north to 30 to 40 km/h. If the rain develops, there’s a potential for widespread amounts in the 10 to 20 mm range. It’s important to restate that this system is rather complex, and a lot of the finer details of the weather won’t become more apparent until a bit closer to the event. That said, at this point, it looks like Friday may actually bring an accumulating rainfall to the region.

Skies will clear Friday night as temperatures drop to a low near 5°C. The breezy northerly winds will continue at 20 to 30 km/h.

Long Range Outlook

Heading through the weekend, Winnipeg will see sunny skies with temperatures returning back to the low to mid-twenties. Winds won’t be too much of an issue, either, making for quite a pleasant weekend. The heat returns next week with daytime highs climbing into the upper twenties. It appears that there will be no significant chances for rain.

Winnipeg’s seasonal daytime high is currently 20°C while the seasonal overnight low is 6°C.

Summer Sizzler For The Game 6 Winnipeg Whiteout Street Party

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Temperatures will soar into the upper 20’s in Winnipeg today, bringing the first taste of summer for fans heading downtown to cheer on the Jets!

Winnipeg will see light southerly winds with temperatures soaring to a high near 29°C today. Skies will remain sunny with southwesterly winds of 10 to 20 km/h for much of the day, but a cold front slumping southwards will move through Winnipeg this evening, bringing northerly winds near 30 km/h, slightly cooler temperatures, and some cloud cover.

Winnipeg Jets Whiteout Party!
If you’re heading downtown for the Jets game tonight, you’ll be in for some great conditions. Starting around 6PM, temperatures downtown will be near 26°C with light winds. The cold front will push through around 7 or 8PM, bringing northerly winds of 15-25 km/h and cooling temperatures to around 18°C by 10PM. A bit of cloud cover will move in through the evening, producing mixed to mostly cloudy skies by late in the evening. It looks like everything should remain dry with the cold front not likely bringing any rain to the city.

This warm weather will come with a risk, though. Extremely dry conditions continue, and as yesterday’s fire on Wilkes showed, it doesn’t take much to start a blaze.1 Relative humidity values will be under 20% today, continuing to present a significant fire hazard.

RDPS 2m Temperature Forecast valid 21Z Monday May 7, 2018
Hot conditions with temperatures nearing the 30°C mark will be in place over southern Manitoba on Monday afternoon

The latter half of tonight will bring cloudy skies to the city with temperatures dipping to a low near 12°C.

Tuesday will bring mixed to mostly cloudy skies to Winnipeg. Temperatures will be much cooler than Monday, but still quite pleasant with a high near 19°C. Winds will remain breezy out of the northeast at 20 to 30 km/h. Beginning in early evening, a chance for showers or thunderstorms will develop through the Red River Valley that will persist through the night. Activity isn’t necessarily expected to be significant or widespread, but a little activity is possible as a low pressure system moves through the province. Winnipeg should see a low near 12°C on Tuesday night.

GDPS 10m Wind Forecast valid 00Z Thursday May 10, 2018
Breezy conditions will develop in Winnipeg behind a cold front that moves through the area on Wednesday afternoon

Wednesday will marked by breezy northerly winds in the wake of a cold front that moves through early in the afternoon. Temperatures will climb to a high near 18°C before the front moves through, then cool to the low-teens through the afternoon. Winds will pick up out of the north behind the front, strengthening to 30 to 40 km/h. On the bright side, the northerly winds will clear out the cloud in the Red River Valley, bringing mainly clear skies for Wednesday night with a low near +3°C.

Long Range Outlook

The remainder of the week will bring cooler temperatures and variable cloudiness. Unfortunately, no significant rain is on the horizon, so the dry weather continues.

Winnipeg’s seasonal daytime high is currently 18°C while the seasonal overnight low is 4°C.

  1. Numerous witnesses on scene reported sparks from a passing train as the igniter for the fires. No formal announcement had been made yet at the time of writing. ↩

Warmer Weather Brings Chance of Showers

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Winnipeg will see a couple chances for showers over the next couple days as temperatures recover back towards above-seasonal values.

After an unpleasant Tuesday, today will bring a significant improvement in the weather. Yesterday’s cool northwesterly winds will be absent. Instead, light southerlies will push temperatures back up to around 17°C. A sunny start to the day will give way to afternoon clouds as a weak upper trough moves into the region. It will spread showers eastwards as it moves through, beginning over southwestern Manitoba early to mid-afternoon and onwards through the Red River Valley through the late afternoon into the early evening.

Skies will clear this evening with westerly winds of 10 to 20 km/h and temperatures dipping to a low near +3°C.

Showers will move across the Red River Valley later this afternoon
Showers will move across the Red River Valley later this afternoon

Thursday will bring plenty of sun alongside moderate westerly winds of 30 gusting 50 km/h send temperatures soaring to around 23°C. There will be a few clouds and a slight chance of showers in the afternoon as a weak cold front slumps southwards. Winds will shift northwesterly behind the front and ease to around 10 to 20 km/h. A few clouds will linger overnight as temperatures dip to a low near 5°C.

Friday will bring slightly cooler temperatures with a high near 17°C. Aside from a bit of a breeze out of the northwest near 30 km/h, it will be a beautiful early May day: few clouds and no chance of rain. Some cloud cover will begin moving into the region on Friday night ahead of the next low pressure system crossing the southern Prairies. Winnipeg should see a low near 4°C on Friday night.

Long Range Outlook

The weekend will bring warm weather with highs in the upper teens or low 20’s. Saturday will bring mixed skies with a chance of showers, but things clear out Sunday for what looks like a beautiful end to the weekend.

Winnipeg’s seasonal daytime high is currently 16°C while the seasonal overnight low is 3°C.

A Mix of Spring Weather Ahead

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Winnipeg will see temperatures return to near-seasonal values to start a week that will see temperatures go on a bit of a roller coaster.

Winnipeg will see a whole bunch of sunshine today with temperatures climbing to a high near 14°C. It will be a bit breezy with northwesterly winds of 20 to 30 km/h in place behind a cold front that passed through late yesterday. Some cloud cover will begin working into the region late in the day and bring cloudier skies for much of the night. The cloud should clear out early Tuesday morning as temperatures head to a low near 0°C.

Temperatures in the Red River Valley will be slightly cooler on Tuesday as an area of high pressure moves through, but warmer weather is quickly spreading eastwards across the Prairies behind it.

Tuesday will bring sunny skies to southern Manitoba as a ridge of high pressure moves through. With light winds and a high near 11°C, Winnipeg will see a slightly cooler-than-seasonal, but overall pleasant, spring day. Temperatures will dip to a low near +3°C on Tuesday night.

A low pressure system tracking through the northern Prairies on Wednesday will bring warm and windy weather back to the region. Temperatures will climb to a high near 19°C, but south to southwesterly winds of 40 to 50 km/h will develop in the Red River Valley.

These strong winds and continued dry weather1 will produce potentially dangerous fire conditions in the valley.

Strong winds will spread into the Red RIver Valley on Wednesday afternoon.

Skies will cloud over through the day followed by winds easing in the evening. After a few hours of calm, a cold front will push southwards through the Red River Valley, bringing a slight chance of showers to the region as it moves through followed by breezy northerly winds of 30 to 40 km/h. Temperatures will head towards a low near +4°C.

Long Range Outlook

Temperatures will continue on a roller coaster through the remainder of the work week. After Wednesday’s mild conditions, Thursday will bring significantly cooler temperatures to the region with highs falling back to seasonal to below-seasonal values. The fall is short, though, with temperatures rebounding back towards the 20°C mark through Friday and Saturday. At this point, the weekend is looking beautiful with temperatures in the upper teens or low 20’s and variable cloudiness.

What Winnipeg won’t see much of, though, is rain. Chances for precipitation continue to look minimal. At this point, it looks like the next chance for accumulating rainfall will be early next week; weather models are forecasting a rather complicated storm system pushing into southern Manitoba from Montana on Monday through Wednesday.

For now, enjoy the warmth and sunshine!

Winnipeg’s seasonal daytime high is currently 13°C while the seasonal overnight low is +1°C.

  1. Relative humidity values on Wednesday are forecast to hover around 20%. ↩