Saturday, April 25, 2009

Weekend Severe Weather

The bulk of great severe weather chances are likely to be confined to the TX/OK/KS areas both today and tomorrow with a dryline and triple point intersection and ample moisture/instability present. Plenty of chasers are out as we are on a weekend and we are nearing the time frame of May, which is southern/central plains chase heaven. The state of Iowa will try to get its' fair share of severe weather this early in the season too...

A quick recap of yesterday's (April 23) severe weather across the state: Several storms were able to become severe warned yesterday, however, as expected the depth of the moisture was a problem and we ended up with the large hail for the most part, along with a few gusty winds. Large hail ranging from dime to nickel sized, even a few quarters and slightly larger, were reported throughout southwest, central, and northeast Iowa.

Today's (April 24) severe weather threat across the state will be very limited as the cold front has slid through all but extreme southeast portions of the state. This small corner of Iowa may see some thunderstorm development this afternoon with the chance of some large hail and/or damaging winds with these thunderstorms. Light rain and cloudy skies are expected across the remainder of the state, as highs only reach into the upper 40s to mid 50s compared to the 80s and 90s the past two days!

Sunday will have severe weather once again likely across the state as the current cold front begins to move back north as a warm front tonight and through tomorrow. An associated low pressure system should develop and move across western Iowa into southern Minnesota by Sunday evening. There is still big questions in the threat of severe weather given that extensive cloud cover and rain showers may be over the state throughout the day on Sunday. If this does occur, thunderstorms are still likely to develop, however, with a limited severe weather threat of marginally severe hail and gusty winds. If areas of the state ahead of the cold front coming eastward and south of the warm front are able to clear in the afternoon, at least moderate instability should be expected with much better potential for severe weather. An additional quick update tomorrow morning may be available for tomorrow's severe weather threat in Iowa...

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