Tornado Watch 782

Issued

Aug 25, 2004, 12:35 PM CDT (17:35 UTC)

Expired

Aug 25, 2004, 7:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

• Mesoscale Discussion 2104Aug 25, 9:24 AM CDT
• Mesoscale Discussion 2105Aug 25, 11:59 AM CDT
• Mesoscale Discussion 2106Aug 25, 1:22 PM CDT
• Mesoscale Discussion 2110Aug 25, 5:14 PM CDT

000 
WWUS20 KWNS 251735
SEL2  
SPC WW 251735
IAZ000-ILZ000-MOZ000-260000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 782
NWS STORM PREDICTION CENTER NORMAN OK
1235 PM CDT WED AUG 25 2004

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

       SOUTHERN IOWA
       WESTERN ILLINOIS
       NORTHERN AND CENTRAL MISSOURI

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1235 PM UNTIL
700 PM CDT.

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 90 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 45 MILES SOUTH SOUTHWEST OF SPICKARD MISSOURI
TO 25 MILES EAST NORTHEAST OF QUINCY 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...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 781. WATCH NUMBER 781 WILL NOT BE IN
EFFECT AFTER 1235 PM CDT. 

DISCUSSION...EXTREME INSTABILITY IN WARM SECTOR COUPLED WITH STRONG
DEEP LAYER SHEAR AHEAD OF S/WV TROUGH ERN KS SUPPORT DEVELOPMENT OF
SUPERCELLS VICINITY BOUNDARY ACROSS MO.  ADDITIONALLY SEVERE BOW
ECHO MOVING ALONG AND N OF IA/MO BORDER WILL CONTINUE. IN ADDITION
TO DAMAGING WINDS AND VERY LARGE HAIL...TORNADOS WILL BE POSSIBLE
WITH ANY SUPERCELL DEVELOPMENT AND ALSO ASSOCIATED WITH BOW ECHO.

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 600.
MEAN STORM MOTION VECTOR 24035.


...HALES

405,0940 412,0904 384,0904 382,0940

Tornado Watches in Missouri, 2004Tornado Watches in Iowa, 2004Tornado Watches in Illinois, 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.