Severe Thunderstorm Warning 409, NWS Omaha, NE

Issued

Sep 7, 2001, 12:51 AM CDT (05:51 UTC)

Expired

Sep 7, 2001, 1:45 AM CDT

In force

54 min

Issued by

NWS Omaha, NE

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Knox County, NE

The Sioux Falls radar (KFSD), 144 km from the middle of the area, began a volume at 05:53 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.

516 
WUUS53 KOAX 070553
SVROMA
NEC107-070645-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA NE
1251 AM CDT FRI SEP 7 2001

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

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

* UNTIL 145 AM CDT

* AT 1251 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  A LINE OF SEVERE THUNDERSTORMS WITH DAMAGING WIND FROM 5 MILES     
  NORTHWEST OF VERDEL TO 21 MILES SOUTHWEST OF WINNETOON...OR FROM   
  33 MILES NORTHEAST OF ONEILL TO 18 MILES EAST OF ONEILL...MOVING 
  EAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  NIOBRARA...VERDIGRE AROUND 105 AM CDT
  WINNETOON AROUND 110 AM CDT
  BAZILE MILLS...CENTER...CREIGHTON AROUND 115 AM CDT
  SANTEE AROUND 120 AM CDT
  BLOOMFIELD AROUND 135 AM CDT
  WAUSA AROUND 145 AM CDT

LARGE HAIL IS ALSO LIKELY WITH THESE STORMS. GO TO A SAFE PLACE 
INSIDE YOUR HOME OR BUSINESS. STAY AWAY FROM WINDOWS AND GLASS DOORS.

LAT...LON 4286 9830 4258 9829 4243 9834 4247 9749
          4254 9750 4285 9751

POLLACK

NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 6, 2:30 PM CDT, 10 hours 21 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
230 PM CDT THU SEP 6 2001

FORECAST CHALLENGES -- PRECIPITATION CHANCES

SYNOPSIS -- THE FIRST WAVE ALOFT HAS CLEARED TO THE EAST OF THE CWA
BUT MOISTURE AXIS REMAINS IN PLACE.

FORECAST -- I SEE LITTLE REASON FOR DEVIATING MUCH FROM THE PREVIOUS
TIMING WHICH IS SIMILAR TO THE ETA...I.E. OFK FOR THE FRONT JUST
BEFORE 12Z AND OMA ABOUT 18Z ALTHOUGH THERE SHOULD BE A SECONDARY
SURGE FRIDAY NIGHT AS THE TRAILING WAVE MOVES SOUTH SOUTHEAST.  THIS
IS LIKELY TO BE MORE EFFECTIVE TO THE WEST HOWEVER.  THE ETA DOES
WANT TO DUMP TOO MUCH PRECIP...ESPECIALLY THIS EVENING...BUT THE
PRECIPITABLE WATER WILL BE HIGH ENOUGH THAT MODERATE TO HEAVY RAINS
ARE QUITE POSSIBLE WITH THUNDERSTORMS.

TMPERATURES OVERNIGHT TONIGHT SHOULD BE HELD UP BY HUMIDITY...CLOUDS
AND CONTINUED STIRRING.  ON FRIDAY CLOUDS SHOULD HOLD DOWN
TEMPERATURES SOMEWHAT AHEAD OF THE FRONT...BUT IT WILL BE DISTINCTLY
COOLER BEHIND THE FRONT.

FRIDAY NIGHT THE SECONDARY SURGE WITH THE SECOND WAVE MOVING AROUHD
THE PREDOMINANT UPPER LOW OVER CANADA WILL GENERATE SOME THREAT OF
PRECIP.  AVN MOS MAY BE OVERDONE...ESPECIALLY WITH COUPLING.  WILL
BE DISTINCTLY COOLER ON SATURDAY.

IN THE EXTENDED...BENIGN BUT COOL UNTIL SOME CHANCE OF PRECIPITATION
WITH ANOTHER WAVE WEDNESDAY AND THURSDAY.

.OMA...NONE.
POWERS/NIETFELD

Severe Thunderstorm Warnings in Nebraska, 2001Every severe thunderstorm warning in 2001

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.