SEVERE THUNDERSTORM WATCH NUMBER 580
NWS STORM PREDICTION CENTER NORMAN OK
325 PM CDT TUE JUL 6 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
MUCH OF EASTERN ILLINOIS
INDIANA
LAKE MICHIGAN
EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 325 PM UNTIL
1100 PM CDT.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 125 STATUTE MILES
EAST AND WEST OF A LINE FROM 90 MILES NORTH OF LAFAYETTE INDIANA
TO 50 MILES SOUTHWEST OF BLOOMINGTON INDIANA.
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 578...WW 579...
DISCUSSION...SEVERE THUNDERSTORMS EXPECTED TO DEVELOP AHEAD OF
APPROACHING STRONG S/WV TROUGH OVER NRN/CENTRAL IL. WHILE SEVERE
STORMS SRN IL/SRN IN CONTINUE TO PROPAGATE NEWD INTO THE VERY
UNSTABLE AIR MASS ACROSS WATCH AREA. 30-40 KT OF MID LEVEL FLOW
SUPPORTS STORMS EVOLVING INTO SHORT LINES/BOWS WITH WIND DAMAGE
BEING MOST COMMON SEVERE MODE.
AVIATION...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 550. MEAN STORM
MOTION VECTOR 25035.
This is just to my west...heads up IN!