Severe Thunderstorm Watch 652

Issued

Jul 5, 2003, 11:50 PM CDT (04:50 UTC)

Expired

Jul 6, 2003, 5:00 AM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Omaha radar (KOAX), 82 km from the middle of the area, began a volume at 04:54 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 1638Jul 5, 7:51 PM CDT
• Mesoscale Discussion 1640Jul 5, 10:46 PM CDT
• Mesoscale Discussion 1641Jul 5, 10:57 PM CDT
• Mesoscale Discussion 1643Jul 6, 2:26 AM CDT
• Mesoscale Discussion 1645Jul 6, 4:33 AM CDT

000 
WWUS20 KWNS 060451
SEL2  
SPC WW 060450
IAZ000-MOZ000-NEZ000-061000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 652 
NWS STORM PREDICTION CENTER NORMAN OK 
1150 PM CDT SAT JUL 5 2003

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

       WESTERN AND SOUTHERN IOWA
       NORTHERN MISSOURI
       EASTERN NEBRASKA

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1150 PM
UNTIL 500 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 80 STATUTE MILES
EITHER SIDE OF A LINE FROM 10 MILES WEST NORTHWEST OF COLUMBUS
NEBRASKA TO 15 MILES SOUTH SOUTHEAST OF OTTUMWA IOWA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES.

OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 649...TORNADO WATCH NUMBER 651.
WATCH NUMBER 649 651 WILL NOT BE IN EFFECT AFTER 1150 PM CDT. 


DISCUSSION...ERN NEB MCS WITH EMBEDDED SUPERCELLS EXPECTED TO MOVE
ESE AT 30-35 KTS OVERNIGHT...WITH CONTINUING THREAT FOR HIGH
WIND/SOME HAIL. HIGH BOUNDARY LAYER MOISTURE INFLOW...SELY LOW LEVEL
WINDS AND EXISTING SUPERCELLS SUGGEST CONTINUED POSSIBILITY FOR A
COUPLE BRIEF TORNADOES...BUT WITH GRADUAL INTENSIFICATION OF SYSTEM
COLD POOL... THIS THREAT SHOULD DIMINISH WITH TIME.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM
MOTION VECTOR 29030.


...CORFIDI

423,0971 420,0920 394,0923 402,0974

Severe Thunderstorm Watches in Iowa, 2003Severe Thunderstorm Watches in Nebraska, 2003Severe Thunderstorm Watches in Missouri, 2003Every severe thunderstorm 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.