Cool with Snow to Start, But Spring Arrives Mid-Week

Winnipeg will have a cool and unsettled start to the week, but warmer spring conditions are on the way.

A cold front slumping southwards today will bring cool temperatures and mostly cloudy skies to Winnipeg. Northwest winds up to 30 gusting 50 km/h will keep temperatures to a high of just +3°C. A few flurries will be possible midday through the afternoon as general instability develops over the region. The clouds will clear out this evening with diminishing winds. A ridge of high pressure moving through overnight will send lows down to -10°C by Tuesday morning.

Another low pressure system will slide through the southeastern Prairies on Tuesday. While it will bring mild conditions to southeastern Saskatchewan and southwestern Manitoba, it will be much cooler in the Red River Valley. Highs will again sit near +3°C with breezy south-southeast winds of 30 gusting 50 km/h. Skies will cloud over in the morning as the low pushes into the southwest corner of the province, followed by some light snow through the afternoon hours. The winds will taper off in the evening with some fo the cloud cover breaking up. Temperatures will dip to a low near -2°C.

RDPS Precipitation Type/Rate Forecast valid 06Z Monday April 20, 2020
On Tuesday, a low pressure system will produce a swath of snow that moves from west-central Manitoba southeastwards into the Red River Valley.

Wednesday will mark the beginning of The Turnaround®. A more zonal flow will develop across the Prairies as the west coast upper ridge begins to collapse, allowing milder Pacific air to push eastwards. Winnipeg will see a high near +9°C with mixed skies and light winds. Skies will stay mixed on Wednesday night with a low near +2°C.

Long Range Outlook

The rest of the week finally looks to bring pleasant spring weather. With partly cloudy to mixed skies, Winnipeg will see several days of highs in the mid-teens with light winds. There may be a chance of showers (or perhaps even thunderstorms) in the second half of the week, currently looking like possibly on Wednesday night into Thursday morning. Even warmer weather looks likely for the weekend with highs climbing into the upper teens.

Today’s seasonal daytime high in Winnipeg is 12°C while the seasonal overnight low is 0°C.

Mild Friday Followed by Cooler, Unsettled Weekend

Spring weather arrives in Winnipeg today with plenty of sunshine and a return to seasonal temperatures. The weekend will bring unsettled conditions as a pair of disturbances move through.

Seasonal temperatures will return to Winnipeg today as a breezy southwest wind pushes milder Pacific air back into the region. Winds will strengthen to 30 gusting 50 km/h through the morning under sunny skies. As a low pressure system moves towards the province from the northwest, a few clouds will begin to arrive through the afternoon.

RDPS 2m Temperature Forecast valid 21Z Friday April 17, 2020
Seasonal temperatures will return to Winnipeg today thanks to a breezy southwest wind.

Skies will cloud over this evening as the low moves through the region, bringing with it a chance of showers. Winds will ease, then shift northwesterly overnight as a cold front swings through. The cloudy conditions will persist on Saturday with a lingering chance for showers gradually tapering off. It will be cooler on Saturday as northwest winds of 30 to 40 km/h limit temperatures to just a couple degrees above tonight’s low.

Skies will clear out later on Saturday afternoon, then winds will ease and temperatures will dip below freezing on Saturday night.

Another low pressure system will approach the region on Sunday, bringing increasing cloudiness and breezy west-southwest winds again. Temperatures will again climb into the mid-single digits. By the afternoon, a chance of showers will develop, but much of the precipitation is forecast to fall north of the area. Much of the cloud will stick around on Sunday night with a continued chance of showers or flurries.

Long Range Outlook

Conditions will improve next week when a more sustained period of seasonal temperatures moves into the region. A westerly flow will bring several disturbances across the province through the week, resulting in variable cloudiness and a few chances for rain.

Today’s seasonal daytime high in Winnipeg is 11°C while the seasonal overnight low is -1°C.

Cool Weather And Flurries Easing Friday

Milder spring weather will return to Winnipeg after a couple more cool days.

A brisk northwest wind of 20 to 30 km/h will keep daytime highs nearly 10°C below normal over the next couple days in Winnipeg. The city will see variable cloudiness today and tomorrow – partly cloudy skies today and mixed skies tomorrow – as the spring sunshine continues to produce convective cloud over the region. The low-level instability in the cool air will continue to bring a chance for some light flurries both days.

Overnight lows will dip into the -5 to -10°C range.

GDPS 2m Temperature Forecast valid 00Z Saturday April 18, 2020
A low pressure system will spread seasonal temperatures eastwards into Manitoba on Friday.

On Friday, a warm front pushing through the province will usher in a milder Pacific air mass. Highs will return towards seasonal values near 10°C with breezy southwest winds of 20 to 30 km/h. Fortunately it’s a fairly dry air mass, so the region should see plenty of sunshine. Near the western escarpement, winds will be a bit stronger with gusts up to 60 km/h.

Long Range Outlook

Winnipeg will see a cloudier weekend with highs in the mid-single digits as a series of disturbances move through. There will be a couple chances for precipitation through the weekend as well. Settled conditions with temperatures rebounding back towards seasonal values will develop early next week.

Today’s seasonal daytime high in Winnipeg is 10°C while the seasonal overnight low is -2°C.

Hello, I'm An...Expert

On Expertise

To be honest, the upcoming weather hasn’t been on the forefront of my thoughts over the past week. With the rapidly expanding reach of COVID-19, I’ve been spending much more time determining what the best steps for my family are in the near future.

A story has repeated in several countries over the past several weeks: relative complacency about the virus has led to disastrous results. Does this mean that it’s time to panic? No! But it is time to be prepared and adjust our behaviours if we want to avoid the unnecessary deaths seen in other countries whose health care systems have been overwhelmed.

So what to do? I think in this case it’s imperative that we listen to the experts. The reality is, whether in health care, meteorology, emergency management, or any other number of fields that have direct impacts on our lives, there are highly educated and trained people who have prepared for challenges that seem foreign to us. It’s easier than ever to find “armchair advice” with almost anything, but there’s a huge difference between an internet opinion and a career of preparation.

Nobody is correct 100% of the time. In the field of meteorology, where believe it or not we are actually quite good (and getting better), mistakes happen. City planners make mistakes. Doctors make mistakes. The difference with experts is how frequent and how severe those mistakes are. Experts make fewer big mistakes, period. It’s easy to remember the failures, and hard to remember all the times they do their jobs well and we don’t notice.

Taking A Break

That said, we’re going to be taking a break from posting forecasts on A Weather Moment. The reason is two-fold. First, I expect to have significant disruptions to my normal schedule over the coming weeks and finding the time to analyze and write forecasts may be difficult. The second, and I think more important, issue is that now is the time to listen to experts. While I am a meteorologist by trade, this web site is not my outlet of official capacity. For the next while, I highly suggest you check for your forecasts from one of the two official Canadian sources:

  • Environment and Climate Change Canada: The official source for meteorological information in Canada and the only agency with authority to issue watches and warnings. Staffed by expert meteorologists with human intervention for the first 48 hours. Offers point-based forecasts, so available locations are limited.
  • The Weather Network: Canada’s largest private-sector weather forecasting firm. Employs a smaller team of meteorologists that modify a gridded data set to produce forecasts. As a result, forecasts are available for a larger number of locations, but the relatively limited size of their team means many forecasts are heavily dependent on the underlying model and can be susceptible to bias/model insufficiencies.

I personally utilize ECCC for my information. They tend to have fairly accurate forecasts and typically correctly forecast things models tend to struggle with (such as those terrible southerlies when ridges depart). These are official outlets staffed by experts who have years and decades of experience in the field.

I don’t have an exact date when we’ll start the forecasts up again. I’ve been pondering for quite a while what the future of the site is. There’s a ton of work I’d like to do on the site that I simply don’t have the time for when writing forecasts 3x per week. My general feeling has been that I’d like to move towards writing forecasts only for significant events to better contextualize them, increasing the amount of climatological analysis, and greatly improve our tools. During this break, I’ll certainly be pondering exactly what the format looks like when we get back at it. If you have thoughts on that, feel free to let us know in the comments!

Regarding COVID-19

In addition to your weather forecasts, now is the time to listen to our health experts on what to do as the global pandemic arrives in our communities. There are very real and tangible steps we can all take to reduce the transmission of SARS-CoV-2 and ease the burden on our health care system. A true signal of success will be if in 4+ weeks we are able to look back and feel like we overreacted. For information regarding the virus, here are your official sources:

If there’s one thing that has been made clear in several countries around the world is that by the time it seems bad, it’s actually much worse. We humans are exceptionally social creatures, and reducing our time with each other is difficult. But by taking measure such as ensuring the practice of good communal hygiene, working from home (where possible), eliminating large gatherings, and essentially holing up for a couple weeks, we will be able to significantly reduce the impact of this disease on our community.

So don’t panic, just prepare and begin changing your behaviour. By listening to, and acting on, the advice of the experts responsible for our well-being, we can all do our part in helping our communities manage the coming storm.

All the best to everyone reading this; we hope that you and those close to you are able to stay healthy as we all work together on this challenge. AWM will be back sometime in the coming weeks!