Tornado Watch 788

Issued

Aug 26, 2004, 4:10 PM CDT (21:10 UTC)

Expired

Aug 26, 2004, 10:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

The Des Moines radar (KDMX), 41 km from the middle of the area, began a volume at 21:10 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 2118Aug 26, 2:29 PM CDT
• Mesoscale Discussion 2123Aug 26, 7:45 PM CDT
• Mesoscale Discussion 2124Aug 26, 9:13 PM CDT

000 
WWUS20 KWNS 262111
SEL8  
SPC WW 262110
IAZ000-MNZ000-MOZ000-NEZ000-WIZ000-270300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 788
NWS STORM PREDICTION CENTER NORMAN OK
410 PM CDT THU AUG 26 2004

CORRECTED FOR  DELETION OF MARQUETTE COUNTY WI

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

  MUCH OF IOWA
  SOUTHEAST MINNESOTA
  NORTHWEST MISSOURI
  SOUTHEAST NEBRASKA
  SOUTHWEST WISCONSIN

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 410 PM UNTIL
1000 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 100 STATUTE MILES EAST AND
WEST OF A LINE FROM 20 MILES WEST OF CAMP DOUGLAS WISCONSIN TO 15
MILES WEST SOUTHWEST OF FALLS CITY NEBRASKA.

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 788...

DISCUSSION...RAPID DEVELOPMENT OF SEVERE THUNDERSTORMS WILL OCCUR
ALONG FRONTAL BOUNDARY FROM NRN IA INTO SERN NEB.  EXTREME
INSTABILITY AND STRONG DEEP LAYER SHEAR SUPPORT SUPERCELLS INCLUDING
VERY LARGE HAIL AND TORNADOES.

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

435,0884 395,0935 395,0974 435,0924

Tornado Watches in Iowa, 2004Tornado Watches in Nebraska, 2004Tornado Watches in Wisconsin, 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.