Severe Thunderstorm Warning 45, NWS Norman, OK

Issued

Apr 6, 2001, 7:23 PM CDT (00:23 UTC)

Expired

Apr 6, 2001, 8:15 PM CDT

In force

52 min

Issued by

NWS Norman, OK

Area

Whole counties; the outline is the Mesonet’s reconstruction

Counties Beckham County, OK, Washita County, OK

The Vance AFB radar (KVNX), 115 km from the middle of the area, began a volume at 00:26 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.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

732 
WUUS54 KOUN 070027
SVROKC
OKC009-039-043-045-059-093-129-149-151-153-070115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
723 PM CDT FRI APR 6 2001

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN WESTERN 
AND NORTHWESTERN OKLAHOMA...

  DEWEY COUNTY 
  ELLIS COUNTY 
  HARPER COUNTY
  MAJOR COUNTY 
  WOODS COUNTY 
  WOODWARD COUNTY 
  BECKHAM COUNTY 
  CUSTER COUNTY 
  ROGER MILLS COUNTY 
  WASHITA COUNTY 

* UNTIL 815 PM CDT

* AT 721 PM CDT...DOPPLER RADAR DETECTED A LINE OF SEVERE
  THUNDERSTORMS FROM 12 MILES NORTHWEST OF BUFFALO TO 11 MILES WEST
  OF SAYRE...MOVING NORTHEAST AT 65 MPH.

* LOCATIONS IN THE WARNING INCLUDE ALABASTER CAVERNS STATE PARK...  
BUFFALO...CHEYENNE...CLINTON...ELK CITY...FORT SUPPLY...FREEDOM...  
SAYRE...SEILING...AND WOODWARD

HAIL UP TO THE SIZE OF GOLFBALLS IS LIKELY WITH THIS LINE OF SEVERE 
THUNDERSTORMS.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO ADVANCE WARNING. MOVE
IMMEDIATELY TO A STORM SHELTER... BASEMENT OR STURDY BUILDING IF A
TORNADO IS SIGHTED.

THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING PARTICULARLY DAMAGING 
WINDS IN EXCESS OF 75 MPH. MOBILE HOMES AND HIGH PROFILE VEHICLES ARE 
ESPECIALLY SUSCEPTIBLE TO HIGH WINDS AND MAY BE OVERTURNED. MOVE TO 
A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 3696 9977 3610 9961 3524 9993 3521 9875
          3616 9876 3641 9876 3698 9872

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 6, 3:50 PM CDT, 3 hours 33 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
350 PM CDT FRI APR 6 2001

TOO MUCH GOING ON TO GET VERY FANCY WITH THE DISCUSSION....

AN EXTREMELY VIGOROUS STORM SYSTEM MOVING FROM THE SOUTHWESTERN
STATES IS EXPECTED TO BRING SEVERE STORMS AND HIGH WINDS TO MUCH OF
THE FORECAST AREA TONIGHT.  SEE SPC PRODUCTS FOR DETAILS ON THE
THUNDERSTORM/TORNADO POTENTIAL.  THERE IS ALSO A CHANCE OF
CONTINUING STORMS... ALTHOUGH PROBABLY NOT SEVERE... FOR SEVERAL
HOURS AFTER THE MAIN SQUALL LINE PASSES.

AWESOME WINDS OVER EASTERN NEW MEXICO AND WESTERN TEXAS ARE EXPECTED
TO ADVANCE INTO THE WESTERN PART OF OUR FORECAST AREA BEFORE
NIGHTTIME EFFECTS CAUSE THEM TO WEAKEN.  THIS IS THE REASON FOR THE
HIGH WIND WARNING FOR THIS EVENING.

THE FRONTAL SYSTEM ASSOCIATED WITH THIS STORM IS EXPECTED TO STALL
JUST SOUTHEAST OF THE FORECAST AREA.  AS IT MEANDERS ACROSS THAT
REGION... THERE WILL BE CHANCES OF SHOWERS AND THUNDERSTORMS AGAIN
FROM LATE THIS WEEKEND THOUGH MUCH OF NEXT WEEK... ESPECIALLY IN THE
SOUTHEAST HALF OF THE AREA.

ZONE FORECAST SHOULD BE AVAILABLE SHORTLY AFTER 4 PM.

FCSTID = 23 = CMS

OKC   58  79  57  79 /  70  10  10  20
HBR   53  77  53  79 /  70  10  10  20
SPS   56  80  56  80 /  60  10  10  20
GAG   51  76  50  79 /  80   0   0  10
PNC   56  77  54  79 /  80  10  10  10
DUA   60  80  57  80 /  70  20  10  20

.OUN...
OK...HIGH WIND WARNING THIS EVENING... WESTERN HALF OF FA.
     WIND ADVISORY TONIGHT ALL ZONES.
TX...HIGH WIND WARNING THIS EVENING... ALL ZONES.
     WIND ADVISORY LATER TONIGHT... ALL ZONES.

In the hours before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
722 PM CDT FRI APR 06 2001

TIME (CDT) .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0645 PM    CHEYENNE                  OK   58 MPH WIND GUST
04/06/01   ROGER MILLS                    MEASURED BY OKLAHOMA
                                          MESONET

0655 PM    CHEYENNE                  OK   59 MPH WIND GUST
04/06/01   ROGER MILLS                    MEASURED BY OKLAHOMA
                                          MESONET

0708 PM    LAVERNE                   OK   .88 INCH HAIL
04/06/01   HARPER                         REPORTED BY NWS COOP
                                          OBSERVER

0711 PM    GAGE                      OK   66 MPH WIND GUST
04/06/01   ELLIS                          MEASURED BY ASOS

KT

Severe Thunderstorm Warnings in Oklahoma, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.