Thursday, May 29, 2008

High Risk Area Going to Be Issued For Parts of NE, SD, and Western IA

I believe this warrent attention after the Parkersburg, IA EF-5 tornado. The severe weather season looks rough for these areas too this year, about as active as it was here earlier.

Here's the write-up from the Storm Prediction Center (SPC):

MESOSCALE DISCUSSION 1078 NWS STORM PREDICTION CENTER NORMAN OK 0532 AM CDT THU MAY 29 2008 AREAS AFFECTED...ERN NEB...WRN IA...EXTREME SERN SD CONCERNING...OUTLOOK UPGRADE VALID 291032Z - 291230Z MUCH OF ERN NEB...WRN IA...AND EXTREME SERN SD WILL BE UPGRADED TO A HIGH RISK AT 13Z TODAY. ...PUBLIC SEVERE WEATHER OUTLOOK... A STRONG UPPER TROUGH IS CURRENTLY MOVING ACROSS PARTS OF UTAH/ARIZONA...AND WILL TRACK INTO THE CENTRAL PLAINS BY LATE THIS AFTERNOON. AHEAD OF THIS SYSTEM...STRONG SOUTHERLY LOW LEVEL WINDS ARE DRAWING A VERY MOIST AND UNSTABLE AIRMASS NORTHWARD INTO THE CENTRAL PLAINS. THUNDERSTORMS ARE EXPECTED TO DEVELOP AND RAPIDLY BECOME SEVERE OVER PARTS OF CENTRAL NEBRASKA...NORTH CENTRAL KANSAS...AND SOUTH CENTRAL SOUTH DAKOTA BY MID/LATE AFTERNOON. THESE STORMS WILL LIKELY BE SUPERCELLS CAPABLE OF VERY LARGE HAIL...DAMAGING WINDS...AND TORNADOES. ACTIVITY WILL INCREASE IN COVERAGE AND INTENSITY THROUGH THE EVENING AS THUNDERSTORMS SPREAD INTO PARTS OF WESTERN IOWA AND SOUTHWEST MINNESOTA. THE COMBINATION OF A VERY UNSTABLE AIRMASS AND STRONG VEERING/INCREASING WINDS WITH HEIGHT INDICATE A RISK OF STRONG TORNADOES OVER THE REGION THIS AFTERNOON AND EVENING.

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