Tag: Snow

RDPS 2m Temperature Forecast valid 12Z Thursday January 16, 2020

Progressive Pattern Brings Mid-Week Cold Snap Followed Up By Mild Friday, More Snow

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Winnipeg will see bitter cold settle over the region for the next couple days, but milder temperatures will quickly move back into the region alongside snow on Friday.

Cold air will continue to build into Winnipeg today with highs climbing to a seasonably cold -19°C. Winnipeg and area will see mostly cloudy skies through the day with some light snow likely. By the evening, around 2 to 4 cm of snow will have fallen in Winnipeg with amounts climbing closer to 5 cm along the International border. Winds will pick up to around 20 km/h this morning and then diminish this evening. A potent Arctic high will continue to push into Manitoba from the west tonight, sending temperatures plummeting to a low near -30°C with clearing skies.

Thursday will be a cold day across the region as that Arctic high slides across the region. Temperatures will top out at just -23°C with light winds and sunny skies. Then on Thursday night, the next low pressure system will begin forming over the southern Prairies and Northern Plains. This system will develop as a low pressure centre crossing the Dakotas with a broad inverted trough extending northwards into southern Manitoba. As it approaches on Thursday night, winds will pick up out of the southeast to around 20 km/h. Cloud cover will spread into the region through the night with temperatures rising to around -17°C by Friday morning.

On Friday, milder temperatures will spread into the Red River Valley as the inverted trough slides through. Winnipeg will see a high near -8°C with a southeast wind continuing at 20 to 30 km/h. More snow will develop over the region on Friday afternoon and continue through the night.

NAM 24hr. Accumulated Snowfall Forecast valid 12Z Saturday January 18, 2020
Close to 10 cm of snow is possible across much of southern Manitoba on Friday afternoon through Saturday morning.

The wind will switch to the northwest on Friday night with temperatures dipping to a low near -17°C. Close to 10 cm of snow is possible in Winnipeg by Saturday morning from this system.

Long Range Outlook

The snow will taper off on Saturday with more seasonal temperatures returning to the region. Sunshine will return for Sunday and the start of next week as temperatures dip with highs dropping into the low minus teens. The cold will be short-lived, though, with near-seasonal temperatures expected to return mid-week.

Today’s seasonal daytime high in Winnipeg is -13°C while the seasonal overnight low is -24°C.

Snowy Transition Into the Deep Freeze

Brad

A disturbance tracking through Manitoba will bring accumulating snow tonight followed by much colder temperatures.

It will be a seasonably cool day in Winnipeg today with a high near -16°C as clouds spread into the region ahead of the approaching disturbance. Winds will pick up out of the southeast this afternoon to 30 gusting 50 km/h, producing uncomfortable wind chills in the -25 to -30 range. Snow will spread across the Red River Valley later this afternoon, but will stay light until the evening. Temperatures will continue to rise through the night as the wind gradually eases.

Skies will stay cloudy on Thursday as the snow tapers off through the day. Winnipeg will likely end up with a total of 10 to 15 cm of fresh snow from this system. Temperatures will climb a bit to a high near -11°C. The cloud cover will begin to break up on Thursday night with winds picking up out of the west to around 20 km/h. Temperatures will head to a low near -22°C.

NAM 24hr. Snowfall Accumulation (10:1 Ratio) valid 21Z Thursday January 9, 2020
Southern Manitoba will see a widespread accumulating snow Wednesday night into Thursday with some areas receiving as much as 10 to 15 cm.

The sun will return on Friday, but unfortunately it’s because of a large Arctic ridge moving into the province. As a result, Winnipeg will see seasonably cold temperatures with a high of only -18°C. Those westerly winds will continue for much of the day, gradually diminishing through the latter half of the afternoon. Skies will be partly cloudy over the region for much of the day, but will clear completely for Friday night. With calm winds, temperatures will head to a low near -30°C.

Long Range Outlook

The cold weather will be sticking around for a while. Highs will generally be well below seasonal averages through the next week, except for Sunday when a passing low brings near-seasonal temperatures for a day. The sun should be around for Saturday, but it looks like mixed to cloudy conditions will develop for the end of the weekend through the first half of next week.

Today’s seasonal daytime high in Winnipeg is -13°C while the seasonal overnight low is -24°C.

Cooler With Mid-Week Snow

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Temperatures will cool to seasonably cool values in Winnipeg after the passage of a low pressure system on Monday. An accumulating mid-week snowfall will then lead to even colder temperatures heading into the weekend.

Winnipeg will enjoy sunny conditions for much of today with temperatures climbing to a high near -2°C. Winds will pick up out of the south-southwest to around 30 km/h midday, then shift west-northwest by the evening to 40 gusting 60 km/h. This wind shift will bring more cloud into the region along with flurries that will persist for much of the night. A cold front passing through overnight will shift the winds solidly northwest and send temperatures to a low near -18°C Tuesday morning. The flurries will taper off sometime late overnight or early Tuesday.

RDPS Forecast 10m Winds valid 21Z Monday January 6, 2020
Moderate west-northwest winds will spread into the Red River Valley again on Monday.

Through the day on Tuesday, a sprawling Arctic high will build into the eastern Prairies. The northwest winds near 30 gusting 50 km/h will continue into the afternoon before gradually diminishing as the high arrives. Temperatures will be much cooler in Winnipeg than the values seen lately with a high near -16°C. Temperatures will dip to a low near -26°C on Tuesday night with light winds under mainly clear skies.

On Wednesday, a sunny start to the day will bring increasing cloudiness through the afternoon. A low pressure system moving into the U.S. will push an inverted trough across southern Manitoba on Wednesday night. As it approaches on Wednesday afternoon, winds will pick up out of the southeast to 30 to 40 km/h as temperatures climb to a high near -16°C. The windy conditions, combined with fairly cold temperatures, will result in some blowing snow through the Red River Valley, but the severity will be significantly limited by minimal snow cover in some areas. Snow will begin late in the afternoon and continue for most of the night.

NAM Forecast 1km Reflectivity with Precipitation Type valid 03Z Thursday January 9, 2020
A broad area of moderate snow will spread across southern Manitoba on Wednesday evening.

Accumulations over an 18 hour period or so will reach up to 10–15 cm in the Red River Valley and 10–20 cm to the west-northwest over southwest and western Manitoba. Blowing snow may produce poor visibilities overnight as the moderate snow combines with the windy conditions.

Long Range Outlook

Seasonal temperatures will stick around for Thursday with a continued chance of flurries and cloudy skies. Clearing will begin pushing into the region on Thursday night, marking the arrival of a colder air mass. Daytime highs will drop into the -15 to -20°C range on Friday and stay there right into next week. Overnight lows will drop as well, varying through the -20 to -30°C range.

Today’s seasonal daytime high in Winnipeg is -13°C while the seasonal overnight low is -23°C.

Mild and Windy Weekend Ahead

Brad

Winnipeg will see cloudy skies and warm temperatures for one more weekend before cooler temperatures return.

Winnipeg will see cloudy skies with a chance of flurries as another disturbance moves through the region today. Temperatures will be mild with a high near -2°C with light winds. A weak ridge of high pressure will cross the province tonight, keeping skies on the cloudier side and winds light. The city will dip to a low near -9°C.

The major weather maker for the weekend will move into the Prairies on Saturday. A rather strong low pressure system will begin pushing into central Saskatchewan on Saturday, bringing with it a strong push of mild Pacific air. Winnipeg will see more cloud on Saturday with increasing south-southeast winds to 30 gusting 50 km/h. Temperatures will climb to a high near -5°C, then continue to climb overnight to around -2°C. The winds will ease for a short period on Saturday night, then pick up out of the northwest to 40 gusting 60 km/h early Sunday morning as the low passes.

GDPS 10m Wind Forecast valid 18Z Sunday January 5, 2020
Moderate west-northwest winds will develop over southern Manitoba on Sunday in the wake of a departing low pressure system.

Sunday will be a windy day with winds gradually easing to 30 gusting 50 km/h as temperatures stay steady near -3°C. There will be a chance for a few flurries as the clouds finally begin pushing off to the east. The departure of the low will usher in a significant pattern change for our weather, bringing an end to the persistent seasonably mild conditions that have been in place for a while now. Temperatures will dip to a low near -12°C on Sunday night and continue to cool into next week.

Long Range Outlook

Winnipeg will likely see a fair amount of sunshine through the first half of next week, but daytime highs will slip from around -10°C into the mid-minus teens. A weak low is forecast to pass through mid-week, which will then usher in another push of colder air, sending highs even cooler towards -20°C for the end of the week. No significant snowfall is forecast.

Today’s seasonal daytime high in Winnipeg is -13°C while the seasonal overnight low is -23°C.