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WWUS20 KWNS 081703

SEL8

SPC WW 081703

NCZ000-VAZ000-CWZ000-090100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 668

NWS STORM PREDICTION CENTER NORMAN OK

105 PM EDT TUE JUL 8 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN AND PART OF CENTRAL NORTH CAROLINA

       SOUTHEAST VIRGINIA

       COASTAL WATERS



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 105 PM UNTIL

900 PM EDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH

SOUTHEAST OF NEW BERN NORTH CAROLINA TO 20 MILES NORTH NORTHWEST

OF RICHMOND VIRGINIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



DISCUSSION...SLOW MOVING UPPER LOW AND ASSOCIATED MID LEVEL COLD

POCKET IS ALREADY SUPPORTING VERY UNSTABLE AIR ACROSS THIS REGION

TODAY...WHICH WILL BECOME MORE UNSTABLE THROUGH THE AFTERNOON.

ALTHOUGH SHEAR IS MODEST...SOME WEAK ORGANIZATION REMAINS POSSIBLE

WITH CLUSTERS/LINE SEGMENTS EVOLVING THROUGH THE EARLY EVENING.

LARGE HAIL AND DAMAGING WIND THREATS WILL LIKEWISE INCREASE TODAY.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27015.





...EVANS

