Elsewhere in Weather News: March 22nd, 2014

Below Normal February Temperatures for most of Continental US; Will Return

What seems to be the winter that won’t give up in Southern Manitoba has not only been persistent in the Canadian Prairies, but also a good chunk of the United States. The central and eastern half of the US has been fairly consistent in staying below normal in February thanks to a persistent trough on the east coast and ridge over the west coast. Consequently, a northwest flow in the upper levels of the atmosphere has established itself over the Northern US Plains and Midwest and, as a result, Arctic highs were continuously helped down into the region. Interestingly enough, central North America has been one of the only regions in the world to experience below normal temperatures in February.

Temperature anomalies across the globe for February, notice the below average in Central/Eastern US, contrasted by the much above normal just to the east, over the ocean. This is caused by persistent troughing on the East Coast. (Source: NOAA)
Temperature anomalies across the globe for February, notice the below average in Central/Eastern US, contrasted by the much above normal just to the east, over the ocean. This is caused by persistent troughing on the East Coast. (Source: NOAA)

The pattern, which has not shifted around much this winter, has caused extremes to occur not only temperature-wise but also precipitation wise. The problem is that with the ridge staying put over the area systems have trouble making their way into the region and instead diverted further north. California continues to experience severe to exceptional drought – the highest level of drought, as per the US Drought Monitor. Consequences might not be immediate but could spell trouble once the wildfire season rolls around, and when water reserves literally start to run dry in the state. Currently, about 60% of the state is considered to have an above average risk for wildfires due to the drought, according to NICC.

Sunday night into early next week yet another blast of Arctic air is expected to infiltrate across a good chunk of the United States. In addition to this cold blast, models are showing a potent Nor’easter Tuesday-Wednesday next week blasting through the Northeast US and Atlantic Canada which could drop significant amounts of snow. However, there is a glimmer of hope for the central United States as most models are in agreement that temperatures late next week into next weekend will be either bounce back to normal or slightly above normal.

500mb northwest flow returns to the region this week, shown by the NAM here, on Tuesday morning. (Source: Twisterdata)
Northwest flow returns to the region this week, shown by the NAM here, on Tuesday morning. (Source: Twisterdata)

More Cold

This week will see below-normal temperatures continue, though it won’t be quite as cold as the weather this past weekend.

Cold weather will continue in southern Manitoba on Monday

Cold weather will continue in southern Manitoba on Monday

Monday

Monday
-18°C / -27°C
Increasing Cloudiness

Today is off to a cold start, but temperatures will increase a fair bit through the day. This afternoon should see highs reaching into the minus teens, a nice recovery from this morning’s low. The wind looks to remain light, making daytime conditions reasonable.

Tuesday

Tuesday
-15°C / -23°C
Mainly Sunny

Tuesday will see daytime temperatures improve a bit over Monday’s values. Highs will be in the mid minus teens with light winds, making for a generally pleasant day.

Wednesday

Wednesday
-11°C / -24°C
Light Snow

The warming trend will continue on Wednesday as a passing low pressure system ushers in a strong southerly flow. Unfortunately, the warmer temperatures brought in by this strong south wind will be largely offset by the cold wind chill values they will generate. We may also see a bit of snow on Wednesday in association with that weather system, making the day a mixed bag overall.

Long Range

The long range forecast continues to look bleak. There have been some hints of a warm up in about 7-10 days, but there is still too much uncertainly to get excited about that.

The Snow Machine Returns

This week will see the return of snow, something we’ve been virtually immune from over the last couple weeks. However, before we can get to the white stuff, we’ll have to deal with another day of extreme cold.

A low pressure system will bring snow to southern Manitoba on Tuesday.
A low pressure system will bring snow to southern Manitoba on Tuesday.

Monday

Monday
-20°C / -28°C
Mainly Sunny

Today will be another day of extremely cold weather. Temperatures this morning were in the -30s and daytime highs this afternoon will remain near -20°C. We’ll be under the influence of a high pressure system today, which will at least keep wind speeds light.

Tuesday

Tuesday
-12°C / -23°C
Snow

Tuesday will bring our first chance of snow in quite awhile. Morning temperatures will be very cold once again, but an approaching low pressure system will help bring in warmer temperatures by late in the afternoon. This system looks to bring 2-5cm to Southern Manitoba during the day on Tuesday. As the system departs on Tuesday night, the wind will come up a bit, generating some blowing and drifting snow.

Wednesday

Wednesday
-16°C / -18°C
Mainly Sunny

Wednesday will be a transition day as we move from one weather system to the next. It will be a fairly benign day in general, with temperatures in the mid minus teens and light winds. Although that will change late in the day as current forecasts suggest we’ll see another chance of snow late on Wednesday into Thursday. More details on this will be available as the week progresses.

Long Range

The long range forecast continues to show glimpses of hope that we may begin to warm up. Models have been hinting at warmer weather for the end of February, so we’ll just have to wait and see if that pans out.

More of the Same

This week will feature more of the same cold weather we’ve seen lately. I’m sure you’re about as enthused to read that as I was to write it.

Early Week Outlook

Monday
-15°C / -30°C
Mix of Sun and Cloud
Tuesday
-18°C / -29°C
Mainly Sunny
Wednesday
-18°C / -26°C
Mainly Sunny

Today will feature slightly below normal temperatures[1]. Highs will be in the mid to upper minus teens in southern Manitoba with fairly light winds. As a result, the wind chill won’t be a big factor.

Tuesday will be a bit cooler than Monday, but not by a whole lot. Temperatures will sit around -20C with wind remaining relatively light once again.

Wednesday will be close to a carbon-copy of Tuesday. The wind will be a bit stronger on Wednesday though, so you may notice the wind chill factor a bit more – but values aren’t expected to reach “extreme” [2] criteria.

Long Range

The long range forecast calls for continued cold weather.

The long range forecast calls for continued cold weather.

The long range forecast continues to look bleak. Models suggest below-normal temperatures will last through most of the first half of February. There has been some rumblings that the second half of February may feature warmer weather, but that remains to be seen. For the time being, we will remain locked in a cold pattern.


  1. The normal high for this time of year is -10°C and the normal low is -21°C.
  2. Extreme being -40 or colder