Tornado watch #254 for northern IL and IA
Posted: Sat May 22, 2004 6:22 pm
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 254
NWS STORM PREDICTION CENTER NORMAN OK
615 PM CDT SAT MAY 22 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN IOWA
NORTHERN ILLINOIS
EFFECTIVE THIS SATURDAY NIGHT FROM 615 PM UNTIL MIDNIGHT CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 80 MILES WEST OF DES MOINES IOWA TO 45 MILES
EAST NORTHEAST OF MARSEILLES ILLINOIS.
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...CONTINUE...WW 248...WW 249...WW 250...WW
251...WW 252...WW 253...
DISCUSSION...E/W BOUNDARY WITH A VERY UNSTABLE AIRMASS AVAILABLE FOR
RAPID DEVELOPMENT OF SEVERE STORMS. SHEAR PROFILES SUPPORT
SUPERCELLS AND TORNADOES ALONG WITH VERY LARGE HAIL.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.
MEAN STORM MOTION VECTOR 24030.
TORNADO WATCH NUMBER 254
NWS STORM PREDICTION CENTER NORMAN OK
615 PM CDT SAT MAY 22 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN IOWA
NORTHERN ILLINOIS
EFFECTIVE THIS SATURDAY NIGHT FROM 615 PM UNTIL MIDNIGHT CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 80 MILES WEST OF DES MOINES IOWA TO 45 MILES
EAST NORTHEAST OF MARSEILLES ILLINOIS.
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...CONTINUE...WW 248...WW 249...WW 250...WW
251...WW 252...WW 253...
DISCUSSION...E/W BOUNDARY WITH A VERY UNSTABLE AIRMASS AVAILABLE FOR
RAPID DEVELOPMENT OF SEVERE STORMS. SHEAR PROFILES SUPPORT
SUPERCELLS AND TORNADOES ALONG WITH VERY LARGE HAIL.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.
MEAN STORM MOTION VECTOR 24030.