Severe Thunderstorm Watch 96

Issued

Apr 16, 2002, 4:00 PM CDT (21:00 UTC)

Expired

Apr 16, 2002, 9:00 PM CDT

In force

5 hr

Issued by

the Storm Prediction Center

The Omaha radar (KOAX), 80 km from the middle of the area, began a volume at 20:59 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 162048
SEL6  
SPC WW 162044
IAZ000-NEZ000-SDZ000-170200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 96
STORM PREDICTION CENTER NORMAN OK
344 PM CDT TUE APR 16 2002

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

   NORTHWEST IOWA                               
   EASTERN NEBRASKA                           
   SOUTHEASTERN SOUTH DAKOTA                       

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 400 PM UNTIL 900
PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 45 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES WEST SOUTHWEST OF BEATRICE
NEBRASKA TO 60 MILES NORTHEAST OF YANKTON SOUTH DAKOTA.

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.


DISCUSSION...THUNDERSTORMS DEVELOPING ALONG COLD FRONT/DRY LINE
EASTERN NEB WHERE AIR MASS NOW MODERATELY TO STRONGLY UNSTABLE AND
CAP HAS WEAKENED SUFFICIENTLY.  WITH APPROACH OF UPPER TROUGH...AND
STRONG DEEP LAYER SHEAR ACROSS AREA...EXPECT STORMS TO BECOME
SEVERE NEXT COUPLE HOURS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 20035.


...HALES

400,0982 433,0972 433,0953 400,0964

Severe Thunderstorm Watches in Nebraska, 2002Severe Thunderstorm Watches in South Dakota, 2002Severe Thunderstorm Watches in Iowa, 2002Every severe thunderstorm 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.