Wednesday, July 30, 2008

WATCHES: Severe Thunderstorm Watch Number 777

WWUS20 KWNS 310304
SEL7
SPC WW 310304
NDZ000-311000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 777
NWS STORM PREDICTION CENTER NORMAN OK
1005 PM CDT WED JUL 30 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

MUCH OF NORTH DAKOTA

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1005 PM
UNTIL 500 AM CDT.

HAIL TO 1 INCH 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 90
STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH
NORTHEAST OF MINOT NORTH DAKOTA TO 70 MILES SOUTHEAST OF BISMARCK
NORTH DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).

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.

OTHER WATCH INFORMATION...CONTINUE...WW 775...WW 776...

DISCUSSION...SCTD AREAS OF STRONG TO SVR TSTMS/POSSIBLE SUPERCELLS
EXPECTED TO PERSIST THROUGH THURSDAY MORNING OVER WW AREA AS DPVA
AND WAA INCREASE ON SERN FRINGE OF JET STREAK CROSSING SRN SK/NRN
MT. STORMS SHOULD BECOME INCREASINGLY ELEVATED WITH EWD
EXTENT...BUT MAY CONTINUE TO POSE A THREAT FOR HIGH WIND AND
MARGINALLY SVR HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION
VECTOR 27035.


...CORFIDI

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