Tornado Watch 87

Issued

Apr 4, 2003, 4:25 PM CST (22:25 UTC)

Expired

Apr 4, 2003, 10:00 PM CST

In force

6 hr

Issued by

the Storm Prediction Center

The St Louis radar (KLSX), 117 km from the middle of the area, began a volume at 22:27 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 374Apr 4, 1:12 PM CST
• Mesoscale Discussion 377Apr 4, 3:10 PM CST
• Mesoscale Discussion 379Apr 4, 5:11 PM CST
• Mesoscale Discussion 381Apr 4, 7:07 PM CST
• Mesoscale Discussion 382Apr 4, 9:00 PM CST

000 
WWUS20 KWNS 042223
SEL7
SPC WW 042225
ILZ000-INZ000-KYZ000-MOZ000-050400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 87
STORM PREDICTION CENTER NORMAN OK
425 PM CST FRI APR 4 2003

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

   SOUTHERN ILLINOIS                           
   SOUTHWEST INDIANA                            
   WESTERN KENTUCKY                           
   SOUTHEAST MISSOURI                           

EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 425 PM UNTIL 1000
PM CST.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 90 MILES NORTHWEST OF POPLAR BLUFF MISSOURI TO
10 MILES EAST SOUTHEAST OF OWENSBORO KENTUCKY.

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 85...WW 86...

DISCUSSION...SEVERE THUNDERSTORM DEVELOPING RAPIDLY AHEAD OF COLD
FRONT NOW MOVING EWD ACROSS MO INTO NWRN AR.  WITH STRONG DEEP
LAYER SHEAR...STEEP LAPSE RATES AND MODERATE
INSTABILITY...SUPERCELLS ARE LIKELY AHEAD OF THE FRONT.  IN
ADDITION TO TORNADOES...DAMAGING WINDS AND LARGE HAIL LIKELY...
PARTICULARLY ASSOCIATED WITH ANY SHORT LINES OR BOWS THAT EVOLVE
OUT OFTHE SUPERCELLS.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES.  EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 24040.


...HALES

385,0913 385,0870 362,0870 362,0913

Tornado Watches in Illinois, 2003Tornado Watches in Missouri, 2003Tornado Watches in Kentucky, 2003Every tornado watch in 2003

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.