A ridge of high pressure brought clear skies and light winds last night to Winnipeg and the northern Red River valley, allowing widespread frost to form early this morning. Temperatures dipped to a low of -1.5C at Winnipeg airport, officially ending the 2010 growing season for the city. Using airport data, this year's growing season was 132 days , 11 days longer than average, and 18 days longer than 2009. This was due to a fairly early start to the growing season this year with the last spring frost recorded on May 9th at the airport.. some 2 weeks ahead of the normal last frost. At Winnipeg airport, the average growing season is about 121 days between an average last spring frost on May 23rd, and a first fall frost on Sept 22nd. Last year, the airport had a 114 day growing season (Jun 7th - Sept 28th), shortened due to a late spring frost in June.
Elsewhere across the Red River valley, most areas north of Highway 3 had frost this morning with overnight lows of 0 to -2C. The southern valley however escaped frost due to cloud cover that spread along the US border. Areas from Morris southward generally stayed above freezing last night.
Increasing cloud cover and moderating temperatures will prevent the threat of frost over the next few days. In fact, long range models are hinting of above normal temperatures moving in for next weekend into the last week of September with temperatures of 20-25C possible. Here's hoping!
An unusual view early Sunday am was the creeping frost on the west side of Pembina between McGilvary and Bishop Grandin. As the cloud cover slipped south, the fog of the river lifted and the sun struggled to get above the trees. We watched the Frost travel south staying on the West side before the sun made it above the trees. Finally the frost crossed to the east side of Pembina before stopping a few meters short of the Red River Dock at the Pony Coral.
ReplyDeleteRob!
ReplyDeleteHave you seen some of the temperatures down in the deep south of the U.S
Even areas like Rapid City was 86 F
Ohama NB was 90 F!
My parents are heading down to Denver this weekend and they thought they might have to bring a parka considering the time of year!
I told them to bring the sunscreen intsead!
Have forecasting improvements of major systems such as Hurricane occurred in the last three years especially 48 Hr forecasts.
ReplyDeleteThis years' Atlantic Hurricane Season appears to have had very few location and timing surprises.
Or is it that most have not been predicted nor made CONUS landfall.
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