Tornado Watch 429

Issued

Jun 10, 2004, 5:55 PM CDT (22:55 UTC)

Expired

Jun 10, 2004, 10:00 PM CDT

In force

4 hr

Issued by

the Storm Prediction Center

The Chicago radar (KLOT), 91 km from the middle of the area, began a volume at 22:57 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

• Mesoscale Discussion 1176Jun 10, 5:30 PM CDT
• Mesoscale Discussion 1179Jun 10, 7:58 PM CDT

000
WWUS20 KWNS 102253
SEL9  
SPC WW 102255
ILZ000-INZ000-110300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 429
NWS STORM PREDICTION CENTER NORMAN OK
555 PM CDT THU JUN 10 2004

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

       CENTRAL AND NORTHERN ILLINOIS
       WESTERN AND CENTRAL INDIANA

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 555 PM UNTIL
1000 PM CDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 65 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 25 MILES WEST NORTHWEST OF MOLINE ILLINOIS TO
25 MILES EAST NORTHEAST OF INDIANAPOLIS INDIANA.

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 TORNADO
WATCH NUMBER 426. WATCH NUMBER 426 WILL NOT BE IN EFFECT AFTER 555
PM CDT. CONTINUE...WW 424...WW 425...WW 427...WW 428...

DISCUSSION...WEAK WNW/ESE ORIENTED WARM FRONT OVER CNTRL IL...S OF
SYNOPTIC BNDRY...EXPECTED TO REMAIN FOCUS FOR LOW-TOPPED SUPERCELL
DEVELOPMENT AS MID LEVEL SUB TROPICAL IMPULSE CONTINUES ENEWD ACROSS
REGION.  LOW LCLS AND LOW TEMP-DEWPOINT SPREADS WILL BE FAVORABLE
FOR TORNADOES IF/AS STORMS DEVELOP ENHANCED LOW LEVEL ROTATION NEAR
FRONT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 26020.


...CORFIDI

423,0905 404,0855 385,0855 403,0905

Tornado Watches in Illinois, 2004Tornado Watches in Indiana, 2004Tornado Watches in Iowa, 2004Every tornado watch in 2004

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.