Monday, January 08, 2007

Above normal warmth to end by week's end..

It's been an incredibly mild run over southern MB with above normal temperatures every day since Dec 8th .. that's 32 consecutive days above normal in Winnipeg as of today. However, a major change in the weather pattern is expected by the end of the week as a strong storm system moves across the Prairies. A strong push of Arctic air is forecast to flood across the Prairies behind this system with temperatures of minus 20 or lower moving into Alberta by Wednesday.. Saskatchewan by Thursday and Manitoba by Friday. This will be the first significant push of Arctic air over the Prairies in over a month which will feel especially cold given the prolonged warmth of the past 4 to 5 weeks. The Arctic airmass is expected to continue into next week, so be prepared for some real winter weather to finally arrive..


  1. By the way, the current forecast for Winnipeg calls for a high of -4 on Thursday and a low of -16. Looking at current model guidance, that forecast should have an asterisk beside it. That high of -4 will likely be around midnight, then the temperature will fall through the day Thursday as northwest winds usher in an Arctic airmass from Saskatchewan. Temperatures on Thursday will likely fall into the minus teens by midday and minus 20 by evening. In addition, gusty northwest winds Thursday will produce windchills of minus 25 to minus 30 by afternoon. So that forecast high of -4 on Thursday should be treated with caution..

  2. Thursday's high now says -17 with a low of -22. Quite the change from -4!

  3. Best to check your wind speed indicator for a stuck bird. Your reading 4K for the wind while the airport is 37K. It sure is 37 not 4.