Active Weather Pattern for Much of US/Canada

100809 HPC Outlook

Click for larger image

Severe weather and heavy snow are in the offing tonight and tomorrow across much of the US and parts of Canada.  Severe thunderstorm, tornado, and flood watches/warnings are in effect across the southern US while winter weather advisories and freeze warnings are up in the northern US.  Here’s the current watch/warning map:

Click for larger image

Click for larger image

Snowfall totals could reach 6 inches in the mountains of Montana.  Rainfall totals over the next 24 hours could reach as high as 4 inches in the watch areas you see above (eastern OK, southern MO, and through the Ohio River Valley).

This looks like a classic winter storm setup.  The snow in the cold region won’t amount to too much, but the rain in the warm region will be very heavy and accompanied by severe thunderstorms.  In addition to the precipitation, very cold air will move into the central plains and may even set some record cold temperatures by the time the weekend is through.  The progression of the storm to the east and south will not be as great as forecasted a day or two ago and these areas should only see a slight cooling over the weekend and into next week.

If you happen to reside in any of these affected areas, please let us know of your experiences in the comments below.

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