Tornado Watch Eastern Iowa/Northwest Illinois and more
Posted: Wed Mar 30, 2005 12:28 pm
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 104
NWS STORM PREDICTION CENTER NORMAN OK
1105 AM CST WED MAR 30 2005
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EASTERN IOWA
NORTHERN AND WESTERN ILLINOIS
NORTHEAST MISSOURI
SOUTHWESTERN WISCONSIN
EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 1105 AM UNTIL
400 PM CST.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE MILES
EAST AND WEST OF A LINE FROM 35 MILES NORTH OF LONEROCK WISCONSIN
TO 50 MILES EAST OF KIRKSVILLE MISSOURI. FOR A COMPLETE DEPICTION
OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU4).
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 103...
DISCUSSION...DEEP SFC LOW MOVING EWD ACROSS SRN IA WITH AIRMASS
RAPIDLY DESTABILIZING ON STRONG LOW LEVEL JET INTO WATCH AREA. WITH
VERY FAVORABLE/STRONG DEEP LAYER SHEAR...COUPLED WITH MDT
INSTABILITY...BOTH SUPERCELLS AND SHORT LINES/BOW ECHOES EXPECTED TO
DEVELOP AHEAD OF SYSTEM AS IT MOVES ACROSS IA. WHILE PRIMARY THREAT
WILL BE DAMAGING WINDS AND HAIL...TORNADIC SUPERCELLS ARE ALSO
EXPECTED.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 23040.