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WWUS20 KWNS 180304
SEL8
SPC WW 180305
IAZ000-MNZ000-WIZ000-180800-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 78
NWS STORM PREDICTION CENTER NORMAN OK
1005 PM CDT SAT APR 17 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN IOWA
SOUTHEAST MINNESOTA
SOUTHWEST WISCONSIN
EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1005 PM
UNTIL 300 AM CDT.
TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EITHER SIDE
OF A LINE FROM 30 MILES SOUTHWEST OF FAIRMONT MINNESOTA TO 35
MILES EAST NORTHEAST OF LONEROCK WISCONSIN.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 77. WATCH NUMBER 77 WILL NOT BE IN
EFFECT AFTER 1005 PM CDT.
DISCUSSION...SUPERCELLS HAVE DEVELOPED ACROSS WRN PORTION OF WATCH
AND WITH LOW LEVEL JET INCREASING AND WARM UNSTABLE AIRMASS MOVING
NWD...POTENTIAL FOR ISOLATED TORNADOES EXISTS WITH THE SUPERCELLS...
COUPLED WITH LARGE HAIL AND DAMAGING WINDS. STORMS WILL CONTINUE
DEVELOPING EWD INTO SWRN WI
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 26035.
...HALESBe careful in these areas overnight into the early morning hours.