Deep Freeze Coming

Well, it had to happen eventually. The first real shot of winter is on it’s way as very cold Arctic air barrels southwards through the Prairies this week. The bright side? It should be relatively short-lived.


RDPS surface temperatures on Thursday morning show temperatures dipping down to -30°C over extreme SW Manitoba on Thursday morning.
RDPS surface temperatures on Thursday morning show temperatures dipping down to –30°C over extreme SW Manitoba on Thursday morning.

Today marks the beginning of the big cool-down for us. A cold front that passed through overnight bringing in northwesterly winds and the leading edge of the cold air. Our temperature will remain fairly steady near about –7°C through the day with mostly sunny skies and a breezy northwesterly wind at 30–50km/h. We’ll see some increasing cloud towards the evening hours which will bring a slight chance of some flurries tonight as a weak disturbance slides through the Dakotas and southeastern Manitoba. Temperatures will dip to around –15 or –16°C tonight as colder air continues to infiltrate southwards.

Wednesday

→ -7°C / -15°C
Cool and breezy. Chance of flurries tonight.
Thursday

-14°C / -19°C
Sunny and cold.
Friday

-14°C / -23°C
Chance of a morning flurry then sunny and cold.

Thursday will bring mainly sunny skies and cold weather as we climb to only around –14°C. The winds will be lighter which will help a little bit. Even more cold air is on it’s way, though. We’ll drop to around –19°C on Thursday night, but some clouds will build into the Red River Valley overnight into Friday morning as another weak disturbance dives southwards through Manitoba, bringing yet more cold air with it. We’ll see a very slight chance of a light flurry or two with the passage of this system, but it will be much more a “cold air bringer” than a snow-maker.

Friday will see mainly sunny skies, save for the possible clouds in the morning, and we’ll see temperatures rebound to around –15°C. Bitterly cold air will begin working it’s way in through the evening hours, though, and we’ll see our temperature drop all the way to –22 or –23°C on Friday night. Winds will be light, but it will likely still be quite easy to hit a –30 wind chill, so be sure to bundle up if you need to be out.

Fortunately, it doesn’t look like the cold weather will be here for long. Warmer air will be pushing eastwards across the Prairies quickly behind this system and we should see temperatures moderate back to the mid-minus-single-digits by the end of the weekend.

Winter Survival

With the first snow under our belt and the first shot of very cold weather on the way, it’s a good time to bring up winter survival. It’s certainly no joke and things that are minor inconveniences in warmer months – such as your car breaking down on the highway – can easily become life or death situations in winter time.

One of the first steps is making sure you have a winter survival kit in your car. They’re very easy to put together (you can also buy them an many retailers including Canadian Tire and CAA Manitoba) and can make the difference between life and death in some winter situations. To make your winter survival kit, find something like a small duffel bag or other bag you can ensure is sealed shut (e.g. snaps or zippers) and put in:

  • Ice scraper and brush
  • Flashlight and extra batteries
  • Booster cables
  • Shovel and tow rope
  • Flares or other signal aids
  • Sand or kitty litter
  • Candles and coffee tin (to
    warm hands, heat a drink or use as an emergency light)
  • Matches/lighter (in a waterproof bag)
  • Blankets/warm clothing
  • Granola bars, candy, sugar cubes
  • First aid kit
  • Compass
  • Hatchet or axe
  • Cellular phone
  • Methyl hydrate (fuel line de-icing)
  • Traction mats
  • Cloth or roll of paper towels
  • Small fire extinguisher
  • Reflective vest

Not all of these need to be present for a basic winter survival kit; most important are ways to stay warm, visible, fed and safe.

The CAA has an excellent brochure available going over some winter driving tips.

Some useful winter travel links:

Also keep in mind that even if it’s not snowing, strong northerly or southerly winds in the Red River Valley tend to produce significant blowing snow on any west/east running roads and highways. I’ve had more than one trip to Altona that has had a beautiful sunny drive on Highway 75 turn into a dangerous, slow crawl through near-zero visibility after turning west onto Highway 14.

Lastly, one of the biggest dangers cold weather has on you is how it impacts your body. One of the primary things that is affected when your body’s core temperature drops is your ability to make decisions.

The cold remains a mystery, more prone to fell men than women, more lethal to the thin and well muscled than to those with avoirdupois, and least forgiving to the arrogant and the unaware.

Outside magazine did an absolutely excellent article about freezing to death. It’s superbly written and will help you understand what happens as your core body temperature drops. Even if you have an idea, give the article a read because it’s a phenomenal piece of educational writing.

Hopefully you never find yourself in a situation where you actually need to use any of this advice. It never hurts to be prepared, though. Here in Southern Manitoba we live in one of the harshest winter climates out there and all it takes is a few simple measures to make sure you’re ready for it. And, as I always mention, if there’s a significant winter storm and your travel plans are flexible, it’s always wiser to wait it out than push through it.

I hope this little section offers some help and that you can all stay out of the wind, safe and warm.

October Won’t Have a Scary Start

October won’t start off with any scary weather, but I can guarantee the month will end on a frightening note!

Tuesday Will be a Very Windy Day in Southern Manitoba

Monday

Monday

Mix of Sun and Cloud. Chance of Showers Late.
22°C / 8°C

Today will be a nice day in Southern Manitoba. Temperatures will be in the low twenties, under a mix of sun and cloud. The wind will be breezy and from the south-west. A cold front will push through Southern Manitoba on Monday night, setting up a cooler Tuesday. There may also be some light rain showers associated with this front, but it will be a hit and miss type of rain event.

Tuesday and Wednesday

Tuesday

Increasing Cloudiness
17°C / 4°C
Wednesday

Mix of Sun and Cloud
15°C / 6°C

The first day of October will neither be really good, nor really bad. On the one hand it will be a seasonably warm day, with temperatures in the mid to upper teens. However, it will also be a very windy day, with westerly winds of 40-50km/h gusting to 60-70km/h (winds may reach 60km/h gusting to 80km/h on a localized basis). Unfortunately, that strong wind will make conditions much less pleasant than they otherwise would be.

Wednesday looks to be much less windy than Tuesday, but it will still be on the breezy side. Temperatures will be in the mid teens, with a westerly wind of 20-30km/h gusting to 40-50km/h.

Long Range

The long range forecast is looking more October-like. Another cold front is currently forecast to move through Manitoba on Wednesday night, bringing in cooler conditions to end the week. Models are also hinting at a strong low pressure system passing near or just south of Manitoba later this week. Should this system take a more northern track, it could impact Southern Manitoba…but it’s too early to say.

Warm Weather Gives Way to Cool Weekend

Well above-seasonal temperatures will wash over Southern Manitoba today as a powerful low pressure system in the Arctic drags a swath of very warm air eastwards across the Prairies. It won’t be meant to last, though, as a strong ridge of high pressure builds in behind a cold front that pushes through on Saturday, bringing cool Arctic air with it for the weekend.

Friday

25°C / 15°C
Mainly sunny.
Saturday

22°C / 4°C
Cloudy with a good chance of showers or thundershowers, then clearing through the afternoon.
Sunday

19°C / 6°C
Mainly sunny and cool.

We’ll see a breezy wind out of the southwest today as temperatures climb into the mid–20’s thanks to a warm front that pushed through overnight. We might see a little bit of cloud, but for the most part skies should be mainly sunny. Still in the warm sector of this system, we’ll only drop to the mid-teens tonight with some increasing cloudiness towards Saturday morning as the cold front approaches.

Saturday morning will bring a fairly decent chance for some scattered shower activity as the cold front pushes into the Red River Valley from the north. There may be a few thundershowers as well but no significant or widespread thunderstorm activity is expected. Gusty northerly winds will move in behind the cold front – which should be through much of the Red River Valley by midday – with clouds scattering out to a mix or partly cloudy skies. The temperature should be able to climb a degree or two above the 20°C mark, however cold air advection will limit our high very close to that mark.

Skies will clear overnight as we drop down to a very chilly 4°C or so. Areas outside the city of Winnipeg may even see temperatures dip a little cooler than that. We may end up seeing the first frost of the year in some places on Saturday night but I don’t expect a widespread frost to occur.

Sunday will be a sunny but very cool day as the ridge of high pressure dominates the weather pattern over Southern Manitoba. We’ll see temperatures climb to only around 17 or 18°C by late afternoon but at least the winds should be relatively light, picking up out of the south later in the day to only around 15–20km/h. We’ll see an overnight low of around 7°C on Sunday night with clear skies.

An Oasis on the Horizon?

After weeks of dry weather, some rain is finally on the way. However, for those desperately wanting rain, the water works may only come after the rain has ended.

A Low Pressure System will Spread Rain Over the Northern Plains on Monday

Monday

Monday

Mainly cloudy. Chance of showers.
23°C / 14°C

Today will see rain over some parts of Southern Manitoba as a powerful upper low approaches the region. This system will tap significant moisture over the Northern Plains, generating an area of moderate to heavy rainfall over the Dakotas. The core of this rain will slide mainly south through North Dakota and Minnesota, however the northern fringe of it may clip areas along the International Border up into south-eastern Manitoba. In these border regions rainfall amounts will be very hard to predict in advance, but a reasonable estimate would be for 5 to 15mm for the entire day. Actual amounts could be slightly higher or lower than this depending on the track of the system. In the rest of Southern Manitoba, little to no rain is expected. There will be a constant threat of showers today and tonight, but most areas including Winnipeg, should see very little if any rain. Other than the rain it will be a cloudy, but mild day, with light winds.

Tuesday and Wednesday

Tuesday

Mix of Sun and Cloud. Chance of Showers or Thundershowers.
27°C / 10°C
Wednesday

Mainly Sunny
21°C / 6°C

Tuesday should be a fairly nice day in Southern Manitoba. Skies will be a mixture of sun and cloud with temperatures in the mid to upper twenties. Late in the day a cold front will come through, likely triggering some showers and thunderstorms. These storms are not expected to be severe.

Not surprisingly, Wednesday will be a cooler day as colder air moves in behind that cold front. High temperatures will be in the low twenties with gusty north-westerly winds. Some fair weather cumulus clouds may develop during the day, but otherwise it will be mainly sunny.

Long Range

The long range outlook is a bit ambiguous at this point. It appears that we’ll probably see conditions begin to warm up around the weekend, only to be knocked back down by another cold front later on the weekend or into next week. This sort of up and down pattern makes forecasting fairly tough, so rather than making any sort of grand prediction I’ll just suggest that we’re in for a variable pattern with some warm weather interspersed with cooler periods.