Tornado Watch 651

Issued

Jul 5, 2003, 7:20 PM CDT (00:20 UTC)

Expired

Jul 6, 2003, 1:00 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

The Sioux Falls radar (KFSD), 169 km from the middle of the area, began a volume at 00:22 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 1630Jul 5, 4:10 PM CDT
• Mesoscale Discussion 1634Jul 5, 6:42 PM CDT
• Mesoscale Discussion 1638Jul 5, 7:51 PM CDT
• Mesoscale Discussion 1640Jul 5, 10:46 PM CDT
• Mesoscale Discussion 1641Jul 5, 10:57 PM CDT

000 
WWUS20 KWNS 060020
SEL1  
SPC WW 060020
IAZ000-NEZ000-SDZ000-060600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 651 
NWS STORM PREDICTION CENTER NORMAN OK 
720 PM CDT SAT JUL 5 2003

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

       WESTERN IOWA
       CENTRAL AND EASTERN NEBRASKA
       SOUTHEAST SOUTH DAKOTA

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 720 PM UNTIL
100 AM CDT.

TORNADOES...HAIL TO 4 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 130 STATUTE MILES EAST AND
WEST OF A LINE FROM 80 MILES NORTH NORTHEAST OF AINSWORTH NEBRASKA
TO 40 MILES WEST SOUTHWEST OF LINCOLN 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...THIS TORNADO WATCH REPLACES SEVERE
THUNDERSTORM WATCH NUMBER 645. WATCH NUMBER 645 WILL NOT BE IN
EFFECT AFTER 720 PM CDT. CONTINUE...WW 646...WW 647...WW 648...WW
650...WW 649...


DISCUSSION...SUPERCELL CLUSTER NOW IN N CNTRL NEB EXPECTED TO
CONTINUE SEWD THROUGH LATE THIS EVENING...WITH ADDITIONAL
DEVELOPMENT LIKELY FARTHER S AND E...ALONG AND E OF STALLED OUTFLOW
BOUNDARY EXTENDING FROM NEAR VTN TO S OF OLU. AREA PROFILER/VWP DATA
SHOW 45+ KT WLY MID LEVEL FLOW OVERSPREADING REGION...WITH 20+ KT
MOIST SELY WINDS LIKELY TO PERSIST NEAR THE SURFACE.  COMBINATION OF
EXPECTED STORM MOTION...BOUNDARY ORIENTATION AND SUSTAINED/INCREASED
LARGE SCALE ASCENT LATER THIS EVENING ALL SUGGEST THREAT FOR
TORNADOES IN ADDITION TO BOWING SEGMENTS WITH VERY LARGE HAIL/HIGH
WINDS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600.
MEAN STORM MOTION VECTOR 28030.


...CORFIDI

433,0964 403,0950 403,0995 433,1015

Tornado Watches in Nebraska, 2003Tornado Watches in South Dakota, 2003Tornado Watches in Iowa, 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.