Tornado Watch 745

Issued

Jul 14, 2003, 3:45 PM CDT (20:45 UTC)

Expired

Jul 14, 2003, 10:00 PM CDT

In force

6 hr

Issued by

the Storm Prediction Center

The Sioux Falls radar (KFSD), 162 km from the middle of the area, began a volume at 20:47 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 1834Jul 14, 1:52 PM CDT
• Mesoscale Discussion 1839Jul 14, 5:05 PM CDT
• Mesoscale Discussion 1844Jul 14, 6:49 PM CDT
• Mesoscale Discussion 1846Jul 14, 7:42 PM CDT
• Mesoscale Discussion 1848Jul 14, 9:24 PM CDT

000 
WWUS20 KWNS 142044
SEL5  
SPC WW 142045
IAZ000-MNZ000-150300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 745 
NWS STORM PREDICTION CENTER NORMAN OK 
345 PM CDT MON JUL 14 2003

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

       WESTERN IOWA
       SOUTHWEST MINNESOTA

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 345 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 NORTH NORTHEAST OF WORTHINGTON MINNESOTA
TO 90 MILES SOUTH SOUTHWEST OF FORT DODGE IOWA.

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 744...


DISCUSSION...CAP IS WEAKENING ACROSS SWRN MN JUST AHEAD OF SURFACE
LOW IN AREA OF MAX LOW LEVEL CONVERGENCE. EXTREMELY UNSTABLE AIR
MASS NOW ACROSS WRN IA/ERN NEB.  RAPID SEVERE THUNDERSTORM
DEVELOPMENT EXPECTED VICINITY SWRN MN/IA BORDER WITH FAVORABLE
VEERING SHEAR PROFILES FOR SUPERCELLS. STORMS EXPECTED TO PROPAGATE
S/SEWD INTO WRN IA WITH ADDITIONAL STORMS POSSIBLY DEVELOPING ALONG
NE/IA BORDER IN CONVERGENT REGION OF SURFACE BOUNDARY.

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 650.
MEAN STORM MOTION VECTOR 33025.


...HALES

441,0940 412,0934 412,0960 441,0962

Tornado Watches in Iowa, 2003Tornado Watches in Minnesota, 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.