Tuesday, April 3, 2012

Severe Weather Southern Plains / Midwest / Ohio Valley Today into Tonight...

Above is the severe weather outlook for today via the SPC in Norman, OK. Severe storms are forecast within the yellow shaded areas on the image.  Large hail and damaging winds will be the primary threats today, although a few tornadoes cannot be completely ruled out with any well organized storms.

In the Southern Plains...a surface front/dryline feature is located roughly near the Western edge of the severe weather outlook area this morning.  The boundary will move Eastward during the day, with thunderstorm development likely along and ahead of the boundary.

Thunderstorms could form and/or existing storms intensify along this boundary  anytime today, however the best chance of severe weather will come from midday into the afternoon as the atmosphere becomes more unstable, and a disturbance moves in from the West.

Very large hail is possible in this region, perhaps on the order of 2 inches in diameter or larger with the strongest storms, as shown within the yellow and black hatched area on the image below:

Across the Midwest and Ohio Valley region... thunderstorm development is expected this afternoon into this evening along a North-bound warm front and ahead of a Southeast-bound cold front, both of which will be traversing the severe weather outlook area in that region.

Large hail and damaging wind gusts are the primary threats in this region, and one or more clusters of organized thunderstorms could form by late evening and move East/Southeastward across the Ohio Valley overnight tonight.

If you live in or near either of the severe weather threat areas for today, please remain alert to the possibility of severe weather during the indicated time periods.  Listen to NOAA Weather Radio, local media or another trusted source for later statements and possible warnings.  Also, please make sure that you've identified the best sheltering option for your location as well.

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