Friday, May 25, 2012

Cool Stormy Weather on The Way For the Weekend

Manitoban's get ready for a wakeup call, the next few days are going to be ridiculously cold with daytime highs over 10°C below the normal and overnight lows over 5°C below the normal. The sun will make only a couple appearances over the next few days as another forecasted storm system pushes into Southern Manitoba, bringing another round of rain and a few possible strong thunderstorms to the Red River Valley, especially near the border.
The 850 MB Temps forecasted by the GFSX Model for tonight at 00Z ( 7pm), as temps will cool with the passage of a trough.

This downright cool weather has brought late-season snow to several communities in Western Manitoba including The Pas, Flin Flon and higher elevations over SW Manitoba. Areas that received snow in higher elevations were Swan River, Duck Mountain, Porcupine Provincial Forest and Riding Mountain. (Even Rob wrote out an article on the snowfall event, read up on his perspective here) Just be glad we never experienced any snow in our region.

Tonight, there is a high threat potential for frost in most of Southern Manitoba, as we see the arrival of another surface ridge and clearing skies. Areas most at risk for frost tonight appears to be in all of the southwestern portion of the province into the park lands, east into the RRV especially areas north of the transcanada highway. The threat also extends east through Winnipeg towards the Ontario border. Areas not included in the risk for frost are along the American Border. There currently is a frost warning in place for almost the whole southern section of the province view the map here.

 Tomorrow will be a transitioning day with temperatures reaching the 12 to 17C range in all of the south, with cloud streaming northwards from the Dakota's with the next system. Rain will push up towards the American Border by morning, likely staying south of the border all day tomorrow. The rain will stay south of the border until the big northward push comes on Sunday.

Showers and Storms will be likely throughout the day on Sunday in Southern Manitoba, as the system pushes North. As shown by the NWS Weather Maps.
Potential for more showers on Monday


And quite the push it will be! Rain and Isolated Thunderstorms will be going on throughout Saturday night south of the border, although the storms will likely weaken by sunrise and the rain will slowly push northwards across the Red River Valley. Most regions across Southern Manitoba should expect the showers to start fairly early on Sunday and last throughout the day, with the possibility for the formation of non-severe storms especially in the RRV during the late afternoon,evening. The rain and possible storms will taper off west to east overnight and will clear out. With another potential for showers Monday as this significant weekend system brings wraparound showers, while it leaves our province. Overall rainfall amounts in Southern Manitoba can be expected to be in between 5 and 10mm in showers,(at least 30+mm) amounts in storms. And inbetween 20 and 30 mm in western manitoba where you will be closer to the heavier rain.This really isn't the best of news for this year's teddy bear picnic, but hopefully it won't dampen their fun and spirits. 

This likely will be the last cold blast of the season, before we start experiencing some warmer May like weather, and some hot June temperatures. That is a long ways away from now, so let's have a look at the improving weather after this rainfall....  Conditions do look like they will improve through the middle of next week, with temperatures pushing back towards the 20C degree mark and some sunny conditions making an appearance. In the mean time put on some PJ's or slippers and kick back and relax as this weekend will be a stay at home weekend. Except for the storm chasers out there who may want to storm chase on Sunday here or in North Dakota if conditions follow through.

1 comment:

  1. Make sure you cover all of your plant's there is a potential tonight for a hard freeze. I know I will.....

    ReplyDelete

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