Tag: mbstorm

Seasonably Cool Weather Ahead With Chance of Snow Mid-Week

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A stubborn Arctic High will keep temperatures on the cool side this week across Manitoba. Sun will give way to cloud, though, as a developing low in the United States looks likely to bring snow to the region.

RDPS 24hr. Snowfall Accumulation Forecast (Kuchera SLR) valid 12Z Thursday February 5, 2025
A disturbance tracking through the United Staes will spread a swath of fluffy snow across southern Manitoba this week.

An Arctic high over the region will keep winds light and temperatures cool in Winnipeg today. A sunny start to the day will give way to mixed skies as some high-level cloud begins to stream into the area from the southwest. This cloud cover is part of a low pressure system developing in the United States that will continue to extend its influence northwards over the next couple days. The Winnipeg area should see a high in the -20 to -15 °C range this afternoon with westerly winds of 10 to 20 km/h.

Mixed skies will continue overnight, gradually clouding over by Wednesday morning. Temperatures will dip to a low in the -25 to -20 °C range.

Through the night, snow will spread out of Montana and across southern Saskatchewan and into Manitoba. A broad area of snow will gradually work its way across southern Manitoba through Wednesday into the evening.

Temperatures will climb close to around -15 °C on Wednesday with light southerly winds. The winds will shift westerly in the evening and pick up into the 30–40 km/h range as this system exits the region. Temperatures will dip to a low close to -20 °C.

Indications are that this system will bring a notable snowfall to the region. As the snow pushes into the cold air over the region, its snow-to-liquid ratios (SLR) will climb. These values will likely reach into the 20:1 to 25:1 range and bring rather fluffy snow to the region.

For areas along and south of the Trans-Canada Highway corridor, it looks like 5 to 10 cm is likely by the time it tapers off. For areas north of this, a broad swath of 10 to 15 cm is likely for the Parkland and Interlake regions.

A few flurries will linger on Thursday as west-northwest winds continue in the 30 to 40 km/h range. Skies will gradually clear thorough the day with highs around -15 °C. The wind will drop off with clearing skies on Thursday night as temperatures head into the -25 to -20 °C range.

Long Range Outlook

The long range forecast for Winnipeg looks quiet with no major snow events on the horizon. Arctic highs will continue to dominate the weather pattern here and bring seasonably cool weather right through next week.

Today’s seasonal daytime high in Winnipeg is -10 °C while the seasonal overnight low is -21 °C.

Weekend Snow Brings Early-February Cold Snap to Southern Manitoba

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A low pressure system crossing the Prairies will bring more snow to Winnipeg and area this weekend, but its cold front will usher Arctic air back into the region.

RDPS 2m Temperature Forecast valid 06Z Sunday February 2, 2025
A passing low pressure system will bring light snow and another day of seasonably mild temperatures before Arctic air pushes back into the area.

A cold front slumped through the region yesterday evening, northerly winds and cooler temperatures for the end of the work week. Daytime highs in the Winnipeg area will sit in the -20 to -15 °C range today as north winds of 20 to 30 km/h gradually ease. The seasonably cool weather will at least come with sunny skies.

The weather will turn this evening as a low pressure system building into the Prairies pushes cloud over into the region. The cloud cover will help keep temperatures warmer tonight, with lows staying on the warm side of -20 °C before beginning to warm overnight. A warm front will push into the region overnight, bringing some light snow into the region.

Heading through the weekend, a couple waves of light snow will move through Winnipeg with clouds and flurries between them. Temperatures will warm to a high near -5 °C on Saturday as this system pushes the Arctic front back north of the region , then drop to around -10 °C on Saturday night and hover around that mark on Sunday. The region will see southeast winds up to 30 gusting 50 km/h on Saturday ease to light overnight.

While the system moving through the Prairies this weekend will bring a total of 10 to 20 cm of snow to many areas west and north of Winnipeg, the Red River Valley will likely only see 5 to 10 cm of snow by the time it tapers off later on Sunday.

This system will push the Arctic cold front back south through the region on Sunday, bringing moderate northwest winds and colder temperatures. Skies will begin to clear on Sunday night with temperatures heading back down to -20 °C.

Long Range Outlook

Colder weather will settle into the region next week with daytime highs in the -20 to -15 °C for much of the week. A bit of moderation is possible mid-week as a system crossing the northern United States may spread some cloud and light snow into the region as it passes to the south. Cold weather will likely return for the end of thew eek as well with daytime highs possibly dipping into the -20s.

Today’s seasonal daytime high in Winnipeg is -11 °C while the seasonal overnight low is -22 °C.

Warming up in Winnipeg, but Colder Temperatures Lurk Nearby

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Temperatures are warming up in Winnipeg, but a battle between warm and cold air is setting up over the province.

RDPS 2m Temperature Forecast valid 06Z Saturday January 25, 2025
A cold front will sweep through southern Manitoba on Friday night, bringing gusty northwest winds and some blowing snow.

To end the work week, a warm front will push through the Winnipeg area this morning. This front will bring a couple centimetres of light snow and moderate southerly winds as it pushes through. The snow will ease midday behind the front with winds shifting to the west. Temperatures will climb to a high near -2 °C this afternoon.

More snow will move into the region this evening, driven by a cold front following the warm front through the province. Another couple centimetres of snow will fall along with northwest winds up to 40 gusting 60 km/h. These winds will send temperatures back down into the mid-minus teens tonight and bring some blowing snow to the region.

Saturday will bring cooler, near-seasonal temperatures back to the region with a high just under -10 °C. Northwest winds will continue through the day at around 30 gusting 50 km/h, then ease off in the evening. A few flurries will be possible in the morning, then skies will clear. Another warm front will push into the region overnight, warming temperatures from a low in the mid-minus teens up to around -10 °C by Sunday morning.

On Sunday, a southwesterly breeze will bring mixed skies as temperatures climb into the -5 to 0 °C range. Temperatures will continue to warm towards the freezing mark on Sunday night as westerly winds of 20 to 30 km/h continue.

Long Range Outlook

Heading into next week, long-range forecasts show mild conditions for Winnipeg with daytime highs regularly near the freezing mark. There’s some uncertainty, though, as to whether the warmth will be able to stay in place over the region.

RDPS 2m Temperature Forecast valid 21Z Monday January 27, 2025
A sharp temperature gradient will set up over Manitoba next week, with above-freezing highs and the south and Arctic cold in the north.

The Polar Vortex is forecast to dip southeast into eastern Canada, and a strong temperature gradient will likely set up across Manitoba as a result. Daytime highs could reach above freezing over parts of southern Manitoba while temperatures into the -20s and -30s will be possible over northern Manitoba. With such a strong temperature gradient in place over the province, minor changes in front location could result in large swings in expected temperatures.

It will likely be a mild week next week, but minor features could also result in brief outbreaks of rather cold temperatures later in the week.

Today’s seasonal daytime high in Winnipeg is -12 °C while the seasonal overnight low is -23 °C.

Snow Moves Across Southern Manitoba This Weekend

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Winnipeg likely won’t escape snow a second time; a low pressure system moving through the province will spread accumulating snow across southern Manitoba this weekend.

RDPS Total Accumulated Snowfall Forecast valid 00Z November 22, 2024 to 06Z November 25, 2024 at 10:1 SLR.
A disturbance crossing the Prairies this weekend will bring heavy snow to Saskatchewan and accumulating snow to southern Manitoba.

Unfortunately, those missing the sun won’t find much relief in the days ahead. Cloud cover will continue to smother the Winnipeg area in the days ahead with only limited opportunities for the sun to shine through.

For today, skies will stay cloudy as a weak disturbance tracks by north of the region. Temperatures will climb to a high in the -5 to 0 °C range with light southwesterly winds. There is a chance of flurries in Winnipeg; the main snow associated with this system will pass through the Interlake, but the Winnipeg area could get clipped by the southern edge. A couple centimetres are possible in the southern Interlake with less than a centimetre likely in the northern Red River Valley.

The cloud cover may break up a little bit overnight as light northwest winds move into the region. Temperatures will dip down into the -10 to -5 °C range by Saturday morning.

A ridge of high pressure will move across the region on Saturday. Some sunny breaks are possible, but the next low moving towards the area will spread more cloud into the Red River Valley later in the day. Winds will be light with a high around -5 °C. Some light snow could push into the area in the second half of the night.

An upper disturbance will track across the southern Prairies on Sunday and support an inverted trough that will build into Manitoba. This will spread a large area of snow across Saskatchewan on Saturday and Manitoba on Sunday. The heaviest snow will fall in Saskatchewan, where as much as 15 to 25 cm will fall across central and eastern portions of the province. In manitoba, the Parkland and Interlake will likely see 10 to 25 cm of snow, while areas along the Trans-Canada Highway corridor receive 5 to 10 cm. Amounts will diminish into the 2 to 5 cm range further south towards the international border. In Winnipeg, over 5 cm is likely to fall by Sunday evening.

Aside from the snow, temperatures will climb to a high just over -5 °C with light northeast winds. Temperatures will dip down into the -10 to -5 °C range overnight with a continued chance of flurries overnight.

Long Range Outlook

Winnipeg will get a break from the snow on Monday morning, but some more snow is likely to develop Monday afternoon as northerly winds move into the region. In addition to general light snow, areas in the lee of Lake Winnipeg and Lake Manitoba will likely see some lake-effect snow through the afternoon hours.

The cloud cover will start to break up on Monday night, leading into the return of some sun for the middle of next week. The return of some sunshine will be driven by colder air that will continue to filter into the region all week. Daytime highs are likely to fall into the -15 to -10 °C range with overnight lows dipping into the -20 to -15 °C range, bringing the first real push of wintery air into the region this year.

Today’s seasonal daytime high in Winnipeg is -4 °C while the seasonal overnight low is -12 °C.