Severe Thunderstorm Warning 201, NWS Omaha, NE

Issued

Jul 24, 2002, 10:43 PM CDT (03:43 UTC)

Expired

Jul 24, 2002, 11:45 PM CDT

In force

62 min

Issued by

NWS Omaha, NE

Area

Counties, with a storm outline in the text

County Knox County, NE

The Sioux Falls radar (KFSD), 141 km from the middle of the area, began a volume at 03:45 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

684 
WUUS53 KOAX 250343
SVROMA
NEC107-250445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA NE
1042 PM CDT WED JUL 24 2002

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  KNOX COUNTY IN NORTHEAST NEBRASKA

* UNTIL 1145 PM CDT

* AT 1041 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 17 MILES NORTHWEST OF VERDEL...OR ABOUT 40
  MILES NORTH OF ONEILL.  MOVEMENT WAS SOUTHEAST AT 40 MPH.

* SOME LOCATIONS AFFECTED...
  VERDEL
  NIOBRARA
  SANTEE...VERDIGRE
  CENTER...BAZILE MILLS...WINNETOON
  BLOOMFIELD...WAUSA

THIS DANGEROUS STORM HAS A HISTORY OF PRODUCING HAIL THE SIZE OF 
GOLFBALLS.  IN ADDITION TO THE LARGE HAIL...PLAN ON WINDS TO 65 MPH 
WITH THIS STORM.  TAKE SHELTER ON THE LOWEST FLOOR OF YOUR HOME OR 
BUSINESS AND KEEP AWAY FROM WINDOWS AND GLASS DOORS.

LAT...LON 4314 9842 4299 9856 4286 9829 4247 9824
          4246 9752 4282 9752

NIETFELD

NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 24, 3:30 PM CDT, 7 hours 13 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
330 PM CDT WED JUL 24 2002

FORECAST CONCERNS CONTINUE TO CENTER AROUND PRECIP CHANCES AND
TEMPS RELATING TO FRONTAL BOUNDARIES.

SYNOPSIS...WARM FRONT FROM LOW N CNTRL SD SEWD NEAR MO RVR INTO SERN
NEB WILL LIKELY BE REINFORCED BY OUTFLOW FROM ONGOING CONVECTION.
THE AREA WILL REMAIN IN LOW LVL MOIST ADVN AS LOW LVL JET INCREASES
THIS EVE.

SHORT TERM...STILL LOOKS LIKE A GOOD CHC TSTMS ESPECIALLY IN NRN AND
ERN ZONES.  SEVERE POTENTIAL PER MCD.

MID TERM...AFTER SFC LOW AND UPPER WAVE PASS TO OUR EAST...A WEAK
CDFNT WILL DROP INTO NRN KS...POSSIBLY RESULTING IN SOME TSTMS IN
THE SOUTH FIRST.  COOLING WILL BE VERY MINOR AS WARM ADVN GETS GOING
BY THU AFTN ALOFT.  ANOTHER CHC TSTMS WITH RETURN OF FRONT AHEAD OF
NEXT WAVE MAINLY FRI AFTN INTO FRI NIGHT.  AS TEMPS CONTINUE TO
WARM ALOFT...AVN QPF BULLSEYE IS ALMOST CERTAINLY OVERDONE.

ETA EXTENSION APPEARS TO BRING ANOTHER COLD FRONT THROUGH ON SAT...
BUT AVN WAITS UNTIL SUNDAY.  CHC PRECIP BOTH DAYS.  WILL NOT GO
AS HOT ON TEMPS SAT AS SOME NEIGHBORS.

HAVE NO BIG DISAGREEMENTS WITH HPC GUIDANCE LATER IN THE EXTENDED.

.OMA...NONE.

POLLACK

In the hours before

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-251000-

HAZARDOUS WEATHER OUTLOOK...CORRECTED ISSUANCE TIME
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
530 PM CDT WED JUL 24 2002

STORM SPOTTER ACTIVATION WILL BE NEEDED EARLY THIS EVENING
OVER NORTHEAST NEBRASKA...AND POSSIBLY LATER THIS EVENING OVER
EAST CENTRAL NEBRASKA AND SOUTHWEST IOWA.

SEVERE THUNDERSTORMS HAVE ALREADY DEVELOPED NEAR THE NEBRASKA-
SOUTH DAKOTA BORDER EARLY THIS EVENING...AND THEY WILL BE MOVING
SOUTHEAST AND SPREADING INTO MUCH OF NORTHEAST NEBRASKA.  THERE
WILL BE A GOOD CHANCE FOR SEVERE STORMS IN NORTHEAST NEBRASKA
THROUGH SUNSET...AND SOME SEVERE STORMS MAY PERSIST INTO THE LATE
EVENING HOURS.

THE PRIMARY THREAT WITH THESE STORMS WILL BE LARGE HAIL AND
DAMAGING WINDS...HOWEVER THERE MAY BE ENOUGH SHEAR IN THE
ATMOSPHERE FOR A FEW TORNADOES.

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC AND CLIMATIC
INFORMATION IS AVAILABLE ON THE INTERNET AT
WWW.CRH.NOAA.GOV/OAX OR AT WEATHER.GOV (LOWER CASE).

DDN

Severe Thunderstorm Warnings in Nebraska, 2002Every severe thunderstorm warning 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.