Tornado Watch 525

Issued

Jul 24, 2002, 4:50 PM CDT (21:50 UTC)

Expired

Jul 24, 2002, 10:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Sioux Falls radar (KFSD), 144 km from the middle of the area, began a volume at 21:50 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.

000 
WWUS20 KWNS 242153
SEL5  
SPC WW 242150
NEZ000-SDZ000-250300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 525
STORM PREDICTION CENTER NORMAN OK
450 PM CDT WED JUL 24 2002

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

   NORTHEASTERN NEBRASKA                           
   EASTERN SOUTH DAKOTA                       

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 450 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 60 STATUTE MILES EAST AND WEST
OF A LINE FROM 40 MILES WEST SOUTHWEST OF COLUMBUS NEBRASKA TO 20
MILES WEST NORTHWEST OF WATERTOWN SOUTH DAKOTA.

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.


DISCUSSION...RAPID DEVELOMENT OF SEVERE THUNDERSTORMS EXPECTED TO
OCCUR ALONG CONVERGENCE ZONE FROM ERN SD INTO NCENTRAL NEB.  WITH
CAPES TO 3000 J/KG AND A FAVORABLE VEERING SHEAR
PROFILE...CONDITIONS FAVORABLE FOR SUPERCELLS. ALONG WITH ISOLATED
TORNADOES...DAMAGING DOWNBURST WINDS AND LARGE HAIL EXPECTED TO
OCCUR ASSOCIATED WITH THESE STORMS AS THEY DEVELOPMENT/MOVE E/SE.


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 28030.


...HALES

411,0991 450,0984 450,0961 411,0965

Tornado Watches in South Dakota, 2002Tornado Watches in Nebraska, 2002Every tornado watch in 2002

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.