Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 385, NWS Norman, OK

June 4, 2001Woods County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 4, 2001, 9:01 PM CDT for Woods County, Oklahoma. It was in force for 39 min. 2 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Jun 4, 2001, 9:01 PM CDT (02:01 UTC)
Expired: Jun 4, 2001, 9:40 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Woods County, OK

What was reported inside it

Time	Report	Where	Remark
Jun 4, 9:25 PM CDT	Hail 0.75	Alva, OK
Jun 4, 9:37 PM CDT	Hail 0.88	Alva, OK

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 4, 6:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 2.0 hours before the alert went out and 138 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2 J/kg
Mixed-layer CIN: -662 J/kg
Mixed-layer LCL: 1130 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 194 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KOUN 050201
SVROKC
OKC151-050240-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
901 PM CDT MON JUN 4 2001

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN AND CENTRAL WOODS COUNTY IN NORTHWEST OKLAHOMA

* UNTIL 940 PM CDT

* AT 901 PM CDT...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 4
  MILES WEST OF ALVA...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE ALVA...AVARD AND CAPRON

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

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO ADVANCE WARNING.
MOVE IMMEDIATELY TO A STORM SHELTER... BASEMENT OR STURDY BUILDING IF
A TORNADO IS SIGHTED.

LAT...LON 3698 9902 3666 9902 3668 9856 3699 9858

WR

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 4, 3:30 PM CDT, 5 hours 31 minutes earlier.

Area forecast discussion, Jun 4, 3:30 PM CDT, 5 hours 31 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
330 PM CDT MON JUN 4 2001

REMAINS OF SFC FNT WHICH PUSHED INTO NWRN SECS OF THE FA OVERNIGHT
AND ERLY THIS MRNG STILL EVIDENT ON MESONET DATA THIS AFTN.  WARM
FRONT HAS LIFTED NWD INTO SRN KS. DRY LINE ALSO EXTENDS FROM SW TX
INTO FAR SWRN OK. 12Z UA DATA SHOWED AREA STILL WELL CAPPED ALTHOUGH
THERE ARE SIGNS THIS MAY BE CHANGING. S/W MOVING EWD OUT OF CO MAY
GENERATE ENUF LIFT TO HELP WEAKEN THE CAP ALLOWING TSTMS TO DEVELOP
IN THE VCNTY OF THE SFC BNDRYS. WITH AMS ONCE AGAIN XTRMLY
UNSTABLE...ANYTHING THAT GOES WUD LIKELY BECOME SVR. WILL GO AHEAD
AND INCLUDE POPS FOR CNTRL AND WRN SECS FOR TONIGHT. MAIN UPR TROF
GRDLY WORKS ITS WAY EWD N OF THE AREA THROUGH MID WEEK WITH A SERIES
OF WEAK S/W BRUSHING THE AREA. WITH MID LVL TMPS NOT AS WARM AND SFC
BNDRYS EXPECTED TO PUSH INTO THE AREA...WILL CONT WITH CHC CAT POPS
INTO WEDNESDAY. SFC BNDRY SHUD PUSH S OF THE AREA BY THURSDAY MRNG
WITH UPR RDG BEGINNING TO BUILD BACK OVER THE AREA.

FCSTID = 2
OKC   70  87  65  80 /  10  10  40  30
HBR   71  92  67  87 /  10  10  30  30
SPS   71  92  67  87 /  10  10  30  30
GAG   63  85  60  78 /  20  30  40  30
PNC   70  86  64  78 /  30  30  40  30
DUA   73  90  70  87 /  10  10  30  30

.OUN...
OK...NONE.
TX...NONE.

In the hours before

Local storm report, Jun 4, 6:50 PM CDT, 2 hours 11 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
650 PM CDT MON JUN 04 2001

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

0631 PM    ERICK                     OK   .75 INCH HAIL
06/04/01   BECKHAM                        RPTD BY S.O.

0648 PM    3 NW MCKNIGHT             OK   1.00 INCH HAIL
06/04/01   HARMON                         QUARTERS COVERING GROUND.
                                          RPTD BY PUBLIC.

TL

Local storm report, Jun 4, 7:28 PM CDT, 1 hour 33 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
728 PM CDT MON JUN 04 2001

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

0715 PM    10 W CHEYENNE             OK   .75 INCH HAIL
06/04/01   ROGER MILLS                    RPTD BY S.O.

0713 PM    DACOMA                    OK   .75 INCH HAIL
06/04/01   WOODS                          RPTD BY F.D.

0716 PM    CHEROKEE                  OK   .88 INCH HAIL
06/04/01 I  ALFALFA                        RPTD BY S.O.

TL

Local storm report, Jun 4, 7:59 PM CDT, 1 hour 2 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
759 PM CDT MON JUN 04 2001

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

0758 PM    VICI                      OK   .75 INCH HAIL
06/04/01   DEWEY                          RPTD BY NWS COOP OBSVR.

TL

Local storm report, Jun 4, 8:47 PM CDT, 14 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
847 PM CDT MON JUN 04 2001

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

0830 PM    1 S REYDON                OK   .88 INCH HAIL
06/04/01   ROGER MILLS                    REPORTED BY PUBLIC

0840 PM    1 S REYDON                OK   .88 INCH HAIL
06/04/01   ROGER MILLS                    PUBLIC RPT. PREVIOUS EVENT
                                          15 MIN DURATION.

0843 PM    18 NE CHESTER             OK   1.25 INCH HAIL
06/04/01   MAJOR                          HALF DOLLAR SIZE HAIL
                                          REPORTED BY PUBLIC.

0850 PM    14 SE WAYNOKA             OK   1.75 INCH HAIL
06/04/01   WOODS                          @GOLF BALL SIZE HAIL
                                          REPORTED BY PUBLIC.

Local storm report, Jun 4, 8:57 PM CDT, 4 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
857 PM CDT MON JUN 04 2001

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

0810 PM    5 E MUTUAL                OK   2.00 INCH HAIL
06/04/01   WOODWARD                       REPORTED BY PUBLIC

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 4, 7:39 PM CDT	Severe Thunderstorm Warning	OUN	Dewey	36 min
Jun 4, 8:00 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	35 min
Jun 4, 8:05 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woodward	35 min
Jun 4, 8:33 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	42 min
Jun 4, 8:41 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woods	39 min
Jun 4, 8:55 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	40 min
Jun 4, 9:06 PM CDT	Tornado Warning	OUN	Roger Mills	29 min
Jun 4, 9:36 PM CDT	Tornado Warning	OUN	Roger Mills	39 min
Jun 4, 9:40 PM CDT	Flash Flood Warning	OUN	Roger Mills	3 hr
Jun 4, 10:14 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	61 min
Jun 4, 10:24 PM CDT	Severe Thunderstorm Warning	OUN	Custer	51 min
Jun 4, 10:28 PM CDT	Tornado Warning	OUN	Roger Mills	47 min
Jun 4, 10:41 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis	49 min
Jun 4, 11:08 PM CDT	Tornado Warning	OUN	Roger Mills	52 min
Jun 4, 11:12 PM CDT	Severe Thunderstorm Warning	OUN	Custer	63 min
Jun 4, 11:24 PM CDT	Severe Thunderstorm Warning	OUN	Dewey	51 min
Jun 4, 11:29 PM CDT	Severe Thunderstorm Warning	OUN	Harper	46 min
Jun 4, 11:54 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	51 min
Jun 5, 12:13 AM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major, Woodward	47 min
Jun 5, 12:17 AM CDT	Severe Thunderstorm Warning	OUN	Harper	43 min
Jun 5, 1:07 AM CDT	Severe Thunderstorm Warning	OUN	Dewey	23 min
Jun 5, 1:10 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	40 min
Jun 5, 1:30 AM CDT	Severe Thunderstorm Warning	OUN	Dewey	30 min
Jun 5, 1:35 AM CDT	Severe Thunderstorm Warning	OUN	Garfield	40 min
Jun 5, 2:19 AM CDT	Severe Thunderstorm Warning	OUN	Blaine	26 min
Jun 5, 4:59 AM CDT	Severe Thunderstorm Warning	OUN	Garfield	31 min
Jun 5, 4:31 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	44 min
Jun 5, 5:37 PM CDT	Severe Thunderstorm Warning	OUN	Woods	38 min
Jun 5, 6:26 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	49 min
Jun 5, 6:42 PM CDT	Severe Thunderstorm Warning	OUN	Woods	48 min
Jun 5, 6:56 PM CDT	Tornado Warning	OUN	Woodward	34 min
Jun 5, 6:57 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	63 min

Nearby

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

Sources

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.