Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 397, NWS Norman, OK

June 5, 2001Dewey County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 5, 2001, 1:30 AM CDT for Dewey County, Oklahoma. It was in force for 30 min. No storm report in the archive falls 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.

The facts

Issued: Jun 5, 2001, 1:30 AM CDT (06:30 UTC)
Expired: Jun 5, 2001, 2:00 AM CDT
In force: 30 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Dewey County, OK

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 5, 12:00 AM CDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 6.5 hours before the alert went out and 155 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: 3841 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1284 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 3.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 050630
SVROKC
OKC043-050700-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
130 AM CDT TUE JUN 5 2001

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN DEWEY COUNTY IN NORTHWEST OKLAHOMA

* UNTIL 200 AM CDT

* AT 130 AM CDT...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 5
  MILES SOUTHEAST OF HUCMAC...MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IN THE WARNING INCLUDE HUCMAC AND OAKWOOD

HAIL UP TO THE SIZE OF QUARTERS 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 3614 9892 3582 9890 3582 9865 3615 9868

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, 10:00 PM CDT, 3 hours 30 minutes earlier.

Area forecast discussion, Jun 4, 10:00 PM CDT, 3 hours 30 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1000 PM CDT MON JUN 4 2001

LOSS OF DAYTIME HEATING SHOULD HELP TO GRADUALLY WEAKEN THE CURRENT
CROP OF STRONG AND SEVERE THUNDERSTORMS.  HOWEVER... A CHANCE OF
STORMS WILL PERSIST OVERNIGHT... ESPECIALLY IN THE NORTH WHERE THE
COMBINED EFFECTS OF THE LOW-LEVEL JET AND SURFACE TROUGH WILL FAVOR
CONTINUING STORM DEVELOPMENT... ALTHOUGH PROBABLY NOT AS STRONG AS
THOSE OF THIS EVENING.

WE WILL ALSO HAVE TO MONITOR THE PROGRESS OF THE STORM SYSTEM JUST
TO OUR SOUTHWEST.  IR IMAGERY SHOWS COOLING TOPS... SO IF THIS TREND
CONTINUES WE WILL ALSO NEED TO MAINTAIN SIGNIFICANT POPS IN THE
SOUTHWEST ZONE GROUPS.

WINDS MAY NEED TO BE NUDGED UP A BIT IN THE WESTERN ZONES
OVERNIGHT.  ONCE WE GET A CHANCE TO PERUSE THE NEW MODEL GUIDANCE WE
CAN MAKE THE FINAL DECISION ON THAT.

THESE ITEMS WILL PROBABLY BE UPDATED BETWEEN 11 PM AND MIDNIGHT.

FCSTID = 2?3 = CMS

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

In the hours before

Local storm report, Jun 4, 9:40 PM CDT, 3 hours 50 minutes before

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

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

0910 PM    4 N SWEETWATER            OK   1.75 INCH HAIL
06/04/01   ROGER MILLS                    GOLF BALL SIZE HAIL
                                          REPORTED BY EM.

0937 PM    12 N ALVA                 OK   .88 INCH HAIL
06/04/01   WOODS                          REPORTED BY PUBLIC

Local storm report, Jun 4, 9:59 PM CDT, 3 hours 31 minutes before

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

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

0943 PM    CHEYENNE                  OK   .75 INCH HAIL
06/04/01   ROGER MILLS                    REPORTED BY SHERIFFS OFFICE

Local storm report, Jun 4, 10:22 PM CDT, 3 hours 8 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1022 PM CDT MON JUN 04 2001

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

1017 PM    7$ NW REYDON               OK   1.75 INCH HAIL
06/04/01   ROGER MILLS                    RPTD BY REYDON EOC TO BE ON
                                          TX/OK STATE LINE.

TL

Local storm report, Jun 4, 10:35 PM CDT, 2 hours 55 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1035 PM CDT MON JUN 04 2001

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

1031 PM    2 S REYDON                OK   1.75 INCH HAIL
06/04/01   ROGER MILLS                    REPORTED BY EM

1021 PM    5 N STRONG CITY           OK   TORNADO
06/04/01   ROGER MILLS                    LOCATION EST BASED
                                          ON RPT FRM LEEDEY FD.

Local storm report, Jun 5, 12:09 AM CDT, 1 hour 21 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1209 AM CDT TUE JUN 05 2001

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

1155 PM    BUFFALO                   OK   .88 INCH HAIL
06/05/01   HARPER                         RPTD BY CO S.O.

TL

Local storm report, Jun 5, 1:10 AM CDT, 20 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
110 AM CDT TUE JUN 05 2001

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

0108 AM    SEiILING                   OK   .88 INCH HAIL
06/05/01   DEWEY                          RPTD BY HAM RADIO SPOTTER.

TL

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, 9:01 PM CDT	Severe Thunderstorm Warning	OUN	Woods	39 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, 1:35 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; the sounding from the Mesonet's radiosonde archive.