Saturday, June 14, 2008

Severe Thunderstorm Watch 529

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 529
NWS STORM PREDICTION CENTER NORMAN OK
145 PM CDT SAT JUN 14 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
MUCH OF WESTERN AND CENTRAL NORTH DAKOTA
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 145 PM UNTIL
900 PM CDT.
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 100
STATUTE MILES EAST AND WEST OF A LINE FROM 70 MILES NORTHWEST 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 WOU9).
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 528
...
DISCUSSION...AHEAD OF MID LEVEL VORT MAX AIR MASS ACROSS ND HAS
BECOME UNSTABLE WITH STEEP LAPSE RATES. THUNDERSTORMS WILL INCREASE
IN NUMBER AND INTENSITY FROM W TO E THIS AFTERNOON. PRIMARY THREAT
WILL BE LARGE HAIL AND DAMAGING DOWNBURST WINDS WITH STRONGER
STORMS.
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 450. MEAN STORM
MOTION VECTOR 28035.
...HALES

No comments: