Tag: Benign Weather

Warm Summer Weather Ahead, But Smokier Conditions This Weekend

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Winnipeg will see warm summer temperatures over the next few days with plenty of sunshine for the weekend, but wildfire smoke will make a reappearance.

RDPS 2m Temperature Forecast valid 21Z Saturday July 22, 2023
Warm temperatures will continue across southern Manitoba this weekend with highs in the upper 20s.

Back from vacation, and I’m glad to say our first forecast back is a nice one. Over the next few days, the upper-level pattern over the Prairies will stay relatively stagnant. An upper ridge over the western Prairies will slowly build and nudge eastwards while a few disturbances rotate through central and northern Manitoba.

In Winnipeg, this will mean that temperatures will be fairly consistent in the days ahead; highs should sit in the upper 20s while overnight lows dip to the mid- to upper teens.

There will be plenty of sunshine in the city in the days ahead too. Today will bring some cloudy periods; there’s a small chance of an isolated shower or thunderstorm this morning as a shortwave moves through the area, and then again late in the day as a weak upper trough approaches from the northwest. 

Heading into the weekend, conditions will settle with sunny to mixed skies. Winds will be generally light, but Saturday could bring northwesterlies into the 20 to 30 km/h range.

The big question for the coming days will be just how much smoke the city will see with this weather pattern. Satellite pictures last night showed a decent plume of smoke to the northwest, corroborated by reports of poor visibility in The Pas and Flin Flon through the day. That smoke will gradually shift towards southern Manitoba. It shouldn’t be too bad today, but we’ll likely see smokier conditions develop at some point on Saturday and persist into Sunday.

Long Range Outlook

To start off next week, the upper ridge will build eastwards into Manitoba and bring more heat to the region. Temperatures will climb into the low 30s with dew points heading towards the 20 °C mark. This will make for a rather hot and humid first half of the week with Humidex values reaching into the upper 30s. Some unsettled weather is possible mid-week with near-seasonal temperatures returning to end the week.

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

Cold Front Brings Relief From Hot and Humid Weather

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A cold front passing out of the province today will usher a cooler and drier air mass into southern Manitoba. This will bring a welcome break from the hot and humid early-June weather the region has seen, along with more settled conditions.

RDPS 2m Temperature Forecast valid 21Z Saturday June 10, 2023
On Saturday, a high pressure centre moving in from the north will bring cooler daytime highs in the low 20s to southern Manitoba.

A cold front will sweep through southern Manitoba this morning, bringing some cloud, a slight chance of showers or thunderstorms, and a breezy northerly wind. In Winnipeg, any chance for rain should end by midday, leaving dry conditions and a high in the mid-20s. Unfortunately, the city won’t see clear skies in the afternoon; behind the cold front, smoke from the northern Prairie forest fires will push into the region. It may end up being fairly noticeable for a few hours after the passage of the cold front, otherwise it should mainly appear as haze and not have too significant an impact on air quality. The winds will ease in the evening, then temperatures will head to an overnight low in the low teens, the coolest in a while.

Through the weekend, a large area of high pressure will settle into the region. Saturday and Sunday won’t bring cloud to the region, rather it will largely just be a question of how much smoke lingers over the region. Temperatures will be cool on Saturday with a high in the low 20s and a low near 10 °C. Temperatures will begin to warm on Sunday with a high back in the mid-20s and a low in the mid-teens.

Long Range Outlook

To start next week, daytime highs will once again climb back to around 30 °C. The humidity levels will stay much lower and keep the heat a bit more comfortable than last week. By mid-week, conditions could turn unsettled again and bring the chance of showers or thunderstorms to the region for several days.

Today’s seasonal daytime high in Winnipeg is 23 °C while the seasonal overnight low is 10 °C.

Warmer Weather Returning for the Weekend

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The western Canada upper ridge will rebound eastwards this week, bringing more sunshine and warming temperatures to southern Manitoba.

GDPS 500mb Height Anomaly Forecast valid 00Z Monday May 22, 2023
Upper ridging (red) will spread into southern Manitoba from western Canada this weekend.

First, I apologize for the lack of forecasts lately. Between a very busy period at work and having to try and kick a persistent cold, I’ve had little spare time and been pretty tired. More changes to the schedule in the week ahead may limit my ability to get forecasts written in the short-term, but I do have some helpful new features coming to the site very soon that I’ve been able to work on a bit.

Looking at the weather, it’s all uphill from here. Yesterday, an upper low moving through the province brought very cool temperatures and showers to the region. Today, with it now shifting off to the east, the upper ridge that slid westwards this week will spread back into the eastern Prairies.

As it heads east, it will send an area of high pressure through the province. That will bring clear skies to the region today with easing northwest winds. Temperatures should bounce back to a seasonal high near 20 °C. Those sunny skies should keep through the weekend as well with temperatures climbing into the mid-20s.

Overnight lows will rise as well, from the high single digits tonight into the mid-teens by weekend’s end.

Long Range Outlook

Next week will start with very warm temperatures; daytime highs in Winnipeg could break the 30 °C mark on Monday. On Tuesday, though, the weather may start to turn, bringing the risk of showers and thunderstorms to the region. The weather pattern looks to stay unsettled through much of the rest of the week, bringing mixed skies, seasonably mild temperatures, and the occasional chance of showers or thunderstorms.

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

Cloudy but Warm Conditions Give Way to Sunshine and Heat Next Week

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A slow-moving system to the southwest will keep skies cloudy in Winnipeg the next couple days. The sun returns on Sunday with temperatures warming up to start the week.

ECMWF 48hr. Precipitation Accumulation Forecast valid 00Z Sunday May 14, 2023
A slow moving disturbance will bring cloud to the Red River Valley, but will dump copious amounts of rain to the west.

The main weather-maker over the next couple days will be a slow-moving complex of upper lows that extends from northeastern Montana to the central American Plains. This system will keep skies cloudy over the Red River Valley, but is bringing more inclement weather further west. Rain will persist across portions of SE Saskatchewan and SW Manitoba over the next few days, which has triggered an overland flood warning for parts of the impacted region.

For Winnipeg, though, dry northeasterly winds coming out of an area of high pressure to the north will help keep the rain west and south of the city. Winds will reach around 30 gusting 50 km/h both today and Saturday, then ease into the 10 to 20 km/h range at night.

Temperatures will continue mild, though, with highs in the 20 to 25 °C range over the next couple days and overnight lows in the low teens tonight and high single digits on Saturday night.

Everything begins to change on Sunday, though. The slow-moving system will be punted eastwards as a strong upper ridge builds across the Prairies. This will bring sunny skies back to the region and start sending highs up. Sunday will bring high temperatures back into the mid-20s and overnight lows into the low teens.

Long Range Outlook

The upper ridge over the Prairies will dominate the weather across southern Manitoba through the first half of next week. Daytime highs will climb into the upper 20s with plenty of sunshine.

This system will also likely result in the intensification of forest fires in the western Prairies and British Columbia. It’s too early to tell at this point, but there’s a chance that parts of southern Manitoba may end up seeing some hazy skies later in the week if smoke begins to drift into the region.

An upper low will begin digging into the ridge mid-week, and could bring some unsettled conditions to southern Manitoba in the second half of next week.

Today’s seasonal daytime high in Winnipeg is 19 °C while the seasonal overnight low is 5 °C.