DAY1SVR: Public Severe Weather Outlook (Automatic)

052
WOUS40 KWNS 061641
PWOSPC
MNZ000-NDZ000-NEZ000-SDZ000-070045-

PUBLIC SEVERE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1141 AM CDT WED JUN 06 2007

...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE NORTHERN PLAINS
LATER TODAY AND TONIGHT...

THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING A
MODERATE RISK FOR THE DEVELOPMENT OF TORNADOES...LARGE HAIL AND
DAMAGING WINDS OVER PARTS OF THE NORTHERN PLAINS LATER TODAY AND
TONIGHT.

THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE

PARTS OF WESTERN MINNESOTA
LARGE PART OF NORTH DAKOTA
PART OF CENTRAL AND NORTHEAST NEBRASKA
A LARGE PART OF SOUTH DAKOTA

SURROUNDING THE MODERATE RISK AREA...THERE IS A SLIGHT RISK OF
SEVERE THUNDERSTORMS ACROSS MUCH OF THE REMAINDER OF THE NORTHERN
INTO CENTRAL PLAINS.

A VERY STRONG UPPER LEVEL TROUGH LOCATED OVER THE INTERMOUNTAIN WEST
THIS MORNING...ACCOMPANIED BY UNSEASONABLY STRONG DEEP LAYER WIND
FIELDS...IS FORECAST TO MOVE INTO THE NORTHERN AND CENTRAL PLAINS
LATER TODAY THROUGH TONIGHT. A STRONG SURFACE LOW DEVELOPING OVER
CENTRAL WYOMING WILL DEEPEN AND MOVE INTO WRN SOUTH DAKOTA LATER
THIS AFTERNOON AND THEN TOWARD SOUTHEAST NORTH DAKOTA BY THURSDAY
MORNING.

STRONG SOUTHERLY LOW LEVEL WINDS ARE RAPIDLY RETURNING MOISTURE
NORTHWARD ACROSS THE PLAINS AHEAD OF A DRY LINE WHICH WILL DEVELOP
EASTWARD INTO THE WESTERN PART OF THE HIGH PLAINS. UNSEASONABLY
COLD AIR ALOFT ATOP THIS INCREASING SURFACE MOISTURE WILL CONTRIBUTE
TO FAVORABLE CONDITIONS FOR SEVERE THUNDERSTORMS. THE APPROACH OF
THE UPPER TROUGH WILL SUPPORT THUNDERSTORM DEVELOPMENT INITIALLY
ACROSS WESTERN PARTS OF THE NORTHERN PLAINS BY LATE THIS AFTERNOON.
STRONG WIND FIELDS CHANGING DIRECTION WITH HEIGHT WILL BE SUPPORTIVE
FOR SUPERCELLS PRODUCING TORNADOES...LARGE HAIL AND DAMAGING WINDS.

INITIAL THUNDERSTORMS WILL THEN EVOLVE INTO A SQUALL LINE THAT WILL
CONTINUE EASTWARD THROUGH TONIGHT. THIS SQUALL LINE WILL TRACK
NORTHEAST TOWARD THE EASTERN DAKOTAS/FAR NORTHWEST IOWA AND WESTERN
MINNESOTA AND LIKELY PRODUCE A GREATER THREAT FOR DAMAGING WINDS.

THOSE IN THE THREATENED AREA ARE URGED TO REVIEW SEVERE WEATHER
SAFETY RULES AND TO LISTEN TO RADIO...TELEVISION...AND NOAA WEATHER
RADIO FOR POSSIBLE WATCHES...WARNINGS...AND STATEMENTS LATER TODAY.

..HALES.. 06/06/2007

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