WATCHES: Severe Thunderstorm Watch Number 441

WWUS20 KWNS 032324
SEL1
SPC WW 032324
NEZ000-SDZ000-040600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 441
NWS STORM PREDICTION CENTER NORMAN OK
620 PM CDT SAT JUL 3 2010

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

NORTH CENTRAL NEBRASKA
EASTERN AND SOUTHERN SOUTH DAKOTA

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 620 PM
UNTIL 100 AM CDT.

HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF
ABERDEEN SOUTH DAKOTA TO 25 MILES EAST OF BURWELL NEBRASKA. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).

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 439...WW 440...

DISCUSSION...INTENSE COMPLEX OF STORMS NEAR THE SD/NEB BORDER...EAST
OF CDR... ARE EXPECTED TO MOVE/SPREAD ENEWD ACROSS PORTIONS OF
CENTRAL AND EVENTUALLY ERN SD LATER THIS EVENING. THIS COMPLEX OF
STORMS IS EXPECTED TO EVOLVE INTO A LINEAR SYSTEM...WITH WIND DAMAGE
THE MAIN THREAT. ALSO...WITH THE COLD FRONT IN THE AREA AND UPPER
IMPULSE APPROACHING FROM THE WEST...OTHER STORMS ARE EXPECTED TO
DEVELOP. THE WARM AND VERY UNSTABLE ENVIRONMENT WILL BE FAVORABLE
FOR THESE STORMS TO PRODUCE WIND DAMAGE AND HAIL.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 25025.

...IMY

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