Alert archive / Oklahoma / Tornado Warnings in 2001

Tornado Warning 61, NWS Norman, OK

June 4, 2001Roger Mills County, Oklahoma

NWS Norman, OK issued this tornado warning at Jun 4, 2001, 11:08 PM CDT for Roger Mills County, Oklahoma. It was in force for 52 min. 1 report 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, 11:08 PM CDT (04:08 UTC)
Expired: Jun 5, 2001, 12:00 AM CDT
In force: 52 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Roger Mills County, OK

What was reported inside it

Time	Report	Where	Remark
Jun 4, 11:30 PM CDT	Hail 1.75	Roll, 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.1 hours before the alert went out and 195 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: 282 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 3850 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

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

113 
WFUS54 KOUN 050409
TOROKC
OKC129-050500-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1108 PM CDT MON JUN 4 2001

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  ROGER MILLS COUNTY IN WESTERN OKLAHOMA

* UNTIL MIDNIGHT CDT

* AT 1108 PM CDT...A THUNDERSTORM WITH A HISTORY OF PRODUCING A
  TORNADO WAS LOCATED 3 MILES SOUTH OF ROLL...MOVING NORTHEAST AT
  25 MPH.

* LOCATIONS IN THE WARNING INCLUDE ANGORA...CRAWFORD...ROLL AND
  STRONG CITY

IN ADDITION TO A TORNADO THREAT... THIS STORM LIKELY CONTAINS
DAMAGING HAIL TO THE SIZE OF BASEBALLS OR LARGER.

TORNADOES ARE ESPECIALLY DANGEROUS AT NIGHT BECAUSE THEY ARE HARD TO
SEE. TAKE COVER NOW. IF A BASEMENT IS NOT AVAILABLE...MOVE TO AN
INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. LEAVE MOBILE HOMES AND
VEHICLES FOR REINFORCED SHELTER. STAY AWAY FROM WINDOWS.

HEAVY RAINS MAY QUICKLY FLOOD LOW LYING AREAS SUCH AS CREEKS...
DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS AUTOMOBILES CAN QUICKLY STALL.

LAT...LON 3576 9987 3564 9970 3571 9940 3601 9939
          3585 9959 3587 9981

WR

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Jun 4, 10:00 PM CDT, 1 hour 8 minutes earlier.

Area forecast discussion, Jun 4, 10:00 PM CDT, 1 hour 8 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, 8:57 PM CDT, 2 hours 11 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

Local storm report, Jun 4, 9:28 PM CDT, 1 hour 40 minutes before

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

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

0925 PM    8 RNW ALVA                 OK   .75 INCH HAIL
06/04/01   WOODS                          REPORTED BY PUBLIC

Local storm report, Jun 4, 9:40 PM CDT, 1 hour 28 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, 1 hour 9 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, 46 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, 33 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.

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, 11:12 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

Tornado Warnings in Oklahoma, 2001 Every tornado warning in 2001 Tornadoes 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.