Tag: Rain

More Unsettled Weather Ahead for Winnipeg

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A continuing series of slow-moving low pressure systems will bring more cloud and showers to southern Manitoba into the weekend.

ECMWF 24-hr Precipitation Accumulation Forecast valid 12Z Saturday September 17, 2022
A slow moving low will spread intensifying showers across southern Manitoba today. Rainfall totals of up to 20–30 mm could be possible.

More showers will persist across southern Manitoba today as a weak low pressure system slowly lifts into the southeastern corner of the province. Scattered showers will blossom across the region this morning as the lift from this low pushes into the region. Rain will likely be sporadic through the morning and get steadier through the afternoon.

The most organized rain will likely move through the Red River Valley later this afternoon through the evening hours. The rain will then taper off late overnight or early Saturday morning. Storm-total rainfall of 10 to 20 mm is likely by Saturday morning. Locally, amounts may vary with some areas seeing a bit less, and others potentially reaching into the 20 to 30 mm range.

There will be a brief reprieve from the rain through Saturday, then another chance of showers will develop over the region on Sunday night. A low pressure system moving out the U.S. towards Lake of the Woods will spread some light rain across the southeast corner of the province with showers spreading to the northwest. A few showers may linger across the Red River Valley into Sunday morning before tapering off. Rainfall amounts with this second system will should be significantly less than today’s system.

These passing systems will keep skies cloudy and temperatures cool over the coming days. Winnipeg will see seasonably cool highs in the mid-teens, but the cloud cover will keep lows mild near the 10 °C mark. Northeast winds will be gradually ease through the day today, followed by variable light lighter winds for Saturday and Sunday.

When the system leaves the region on Sunday, the cloud cover should finally break up, bringing some sun back to the Red River Valley. Highs will rebound back into the low 20s, making for a pleasant afternoon.

Long Range Outlook

More unsettled weather is likely to kick off next week, with more rain possible later Monday. The rest of the week looks to bring variable cloudiness with a chance of showers. Cooler air will build into the region, dropping daytime highs from the low 20s to the low teens over several days.

Longer-range forecasts show the decent into cooler conditions followed by an easing to near-seasonal temperatures. All in all, the general trend over the next couple weeks is an easing of fall conditions into the region.

Today’s seasonal daytime high in Winnipeg is 18 °C while the seasonal overnight low is 6 °C.

Cooler and Unsettled Conditions Ahead for Winnipeg

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A slow-moving low pressure system will bring seasonal temperatures to southern Manitoba over the next few days. Along with cloudy skies, the low will also bring a chance of rain in the second half of the week.

RDPS 2m Temperature Forecast valid 21Z Tuesday September 13, 2022
A sprawling high pressure system will bring near-seasonal temperatures to southern Manitoba on Tuesday.

Cooler air is already on the way today behind a cold front that passed through overnight. Highs across the region will be considerably lower than yesterday’s 30 °C weather. Temperatures in southern Manitoba will climb into the upper teens today with northerly winds of 20 to 30 km/h. 

Cloud will begin to push into the region tonight as a slow-moving low pressure system pushes towards the Dakotas. Temperatures will dip back below 10 °C tonight as the winds ease and skies cloud over.

Beginning Wednesday, much of southern Manitoba — including Winnipeg — will see mostly cloudy skies that will persist right to the weekend. Temperatures will be very consistent through the rest of the week as well: highs will climb to the mid- to upper-teens and lows should sit in the low teens.

It should stay dry across the region on Wednesday, but conditions will grow more unsettled on Wednesday night into Thursday. Showers are likely across much of the region on Thursday, but may be patchy in coverage and sporadic in nature. Amounts by Thursday evening will be generally low, with most regions seeing jp to 5 to 10 mm of rain.

ECMWF Hi-Res 24-hr Precipitation Accumulation Forecast valid 00Z Friday September 16, 2022
Much of southern Manitoba will see rain on Thursday, however some uncertainty remains for the Trans-Canada Highway corridor for areas around Winnipeg and westwards.

The exceptions will be in western Manitoba and in southeastern Manitoba. In WestMan, 10 to 20 mm is possible due to upslope winds over the Duck Mountains and the Riding Mountains. This will depend on the rain pushing far enough northwards, which some models — like the above ECMWF output — don’t.  In the southeast corner of the province, up to 15 to 25 mm is possible as a more organized area of rain moves through that area. Some of that heavier rain may also fall over the southern Red River Valley, but that’s very uncertain right now.

The showers will ease on Thursday night, leaving just a few lingering showers across the region for Friday.

Winds will pick up out of the east to around 30 gusting 50 km/h on Wednesday, then gradually ease into the 20 to 30 km/h range as it shifts northerly over Thursday and Friday.

Long Range Outlook

The region will see mixed skies through the weekend as another low moves from the Dakotas towards NW Ontario. Highs will nudge towards the 20 °C mark, but some more rain is possible sometime later Saturday into Sunday as the low passes by the region.

Next week should bring near seasonal temperatures and a gradual clearing trend.

Today’s seasonal daytime high in Winnipeg is 19 °C while the seasonal overnight low is 7 °C.

Showers Later Tuesday Bring Relief From the Heat

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A cold front will bring showers and thunderstorms to Southern Manitoba today, easing the heat and humidity of the past few days.

RDPS 24-hour Precipitation Accumulation Forecast valid 12Z Wednesday August 24, 2022
Showers will spread from western Manitoba southwards through the day on Tuesday.

A low pressure system crossing Hudson Bay overnight has kicked off a push of cooler air southwards through Manitoba. While this push of cold air won’t be overly strong, it will be enough to break the heat of the past few days. Highs will dip into the low to mid-20s over the next few days with northerly winds of 20—30 km/h during the day. Today will start off with a mix of sun and cloud, then become increasingly cloudy into the afternoon. Widespread showers with a risk of thunderstorms will drop through the Red River Valley mid- to late-afternoon through the evening. In Winnipeg, there is the ever-present risk that the showers will dodge around the fringes of the city, but it looks likely that there will be some rain later in the afternoon or evening. Skies will clear out overnight with lows dipping close to 10 °C.

Wednesday through Friday will bring mainly sunny skies to the region. Daytime highs will gradually warm from the low 20s back into the mid- to upper-20s. Overnight lows will climb back into the upper teens by Friday night.

Long Range Outlook

A low pressure system will likely move through the region this weekend, bringing more cloud and showers to the region. Both Saturday and Sunday look unsettled, with a few lingering showers possible on Monday. Sunshine should return for next week.

Today’s seasonal daytime high in Winnipeg is 24 °C while the seasonal overnight low is 11 °C.

Seasonably Cool and Showery Weather Ahead

Brad

A northwesterly flow will bring seasonably cool and showery weather to southern Manitoba this week.

RDPS 300mb Wind and Height Forecast valid 18Z Wednesday July 27, 2022
An upper low will slump across Manitoba over the coming days, bringing cooler temperatures and unsettled conditions.

An upper low slumping from northern Manitoba towards Lake of the Woods will usher a northwest flow into Manitoba and bring seasonably cool temperatures to the region. Today will start off with showers ending early, followed by mixed skies with more showers likely later in the morning and into the afternoon. A few thunderstorms may even develop in the afternoon, but no organized severe weather threat will exist with them. Temperatures will climb into the low to mid-20s this afternoon with a northwest wind increasing to 30 gusting 50 km/h.

The showers will taper off in the evening with the loss of daytime heating. Partly cloudy skies will linger overnight with a low in the mid-teens.

On Wednesday, the upper low will drag a trough southwards over the Red River Valley, bringing more showers to the region. Temperatures will be even cooler with a high only around 20 °C. The region will see breezy northerly winds again through the day. The showers will taper off in the evening, but some cloud will continue to linger into the night. Temperatures will dip down into the low teens overnight.

The whole disturbance will begin to move off from the region on Thursday. Winnipeg should see mixed clouds with just a small chance of any more rain showers. Temperatures will climb back into the low 20s with light northerly winds. Skies should finally clear out by Thursday evening as a ridge of high pressure builds into the region. Temperatures will head to an overnight low in the low teens again on Thursday night.

Long Range Outlook

The heat returns for the weekend with highs climbing back to seasonal or seasonably warm values. There should be plenty of sunshine and little chance of rain. Overnight lows will also warm substantially, climbing back into the upper teens.

If the next few days of cooler, showery weather isn’t your cup of tea, don’t worry! The summer heat is right around the corner.

Today’s seasonal daytime high in Winnipeg is 26 °C while the seasonal overnight low is 13 °C.