Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 430, NWS Norman, OK

June 30, 1994Harmon County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 30, 1994, 12:37 AM CDT for Harmon County, Oklahoma. It was in force for 33 min.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jun 30, 1994, 12:37 AM CDT (05:37 UTC)
Expired: Jun 30, 1994, 1:10 AM CDT
In force: 33 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Harmon County, OK

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 5.6 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: 2620 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 2272 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KOKC 300539
SVROUN
OKC057-300610-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1237 AM CDT THU JUN 30 1994

THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 110 AM CDT FOR
PEOPLE IN THE FOLLOWING COUNTIES

IN SOUTHWESTERN OKLAHOMA
     SOUTHEASTERN HARMON

INCLUDING THE FOLLOWING LOCATIONS
     MC QUEEN

AT 1237 AM CDT RADAR INDICATED A SEVERE THUNDERSTORM NEAR GOULD MOVING
TO THE EAST AT 35 MPH. 80 TO 90 MPH WINDS HAVE BEEN REPORTED WITH THIS
STORM.

THIS THUNDERSTORM IS CAPABLE OF PRODUCING PARTICULARLY DAMAGING
WINDS.  IF YOU ARE IN THE PATH OF THIS STORM...QUICKLY SEEK
SHELTER IN A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.  DO
NOT REMAIN OUTDOORS.  REMEMBER...MANY DEATHS IN SEVERE
THUNDERSTORMS OCCUR BECAUSE OF FLYING DEBRIS.  TRUCKS AND OTHER
HIGH-PROFILE VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO STRONG
WINDS AND MAY BE BLOWN OFF THE ROAD.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS 60 MPH OR HIGHER...
DESTRUCTIVE HAIL...DEADLY LIGHTNING AND HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO DONT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR CENTRAL AND
SOUTHERN OKLAHOMA AND NORTHERN TEXAS UNTIL 400AM CDT.


LAT...LON 3453  9966 3451  9977 3473  9977 3476  9965


WWUS08KMKC.^

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 29, 3:32 PM CDT, 9 hours 5 minutes earlier.

Area forecast discussion, Jun 29, 3:32 PM CDT, 9 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OKLAHOMA
330 PM CDT WED JUN 29 1994

STG/SVR TSTMS DVLPG THIS AFTN ACRS ERN CO/WRN KS XPCTD TO MOV SEWD ALNG
LOW-LVL THETA-E/INSTABILITY AXIS THRU THE NITE. A WK S/W PROGGED TO MOV
INTO AREA OVRNGT WL ALSO ACT TO CONT CNVCTN. LOW LVL WND FIELD INCRSG
FM S TNGT WL IMPROV VERT WND PROFILE AND HELP TSTMS TO PERSIST INTO LATE
HOURS. ETA EHI FIELDS FCST TO BCM QUITE STRNG... ESP FOR THIS TIME OF
YR... ACRS NWRN OK TNGT AS LOW LVL WNDS INCRS AND VRY HIGH INSTABILITIES
PERSIST. STEEP MID LVL LAPSE RATES AND HIGH AMTS OF LOW LVL MSTR...
WITH H85 DWPTS NR 15C... ARE COMBINING TO CREATE VRY UNSTBL AMS. TSTMS
ARE XPCTD TO MOVE INTO NWRN OK THIS EVE...ACRS WRN AND CNTRL SXNS NR
MDNT... AND RED RVR VLY VRY LT TNGT. BEST PCPN CHCS WL BE ACRS WRN AND
CNTRL OKLA. NERN ZNS XPCTD TO HAVE LOWEST CHC DUE TO MORE STBL AIR IN
THE AREA. LINGERING TSTMS CONT WED MRNG SRN ZNS... WITH NEW DVLPMT PSBL
AGN LATE THURS BEGINNING IN NWRN OK.

IN LONGER TERM... NW FLOW WKNS AS UPR RDG NRN MX/SWRN US SHFTS BACK INTO
AREA...WHILE TROF MOVS INTO WRN U.S. THIS WL LKLY END PCPN CHCS WHILE
MAINTAINING HIGH TEMPS.

FCSTID=32
HBR   75 102  76 103 / T50  20  20  10
OKC   73  98  76 100 / 40  30  20  10
SPS   77 101  78 103 / 30  20  10  10
GAG   69 101  69 101 / 60  20  30  20
PNC   68  99  73 101 / 30  20  30  10
DUA   75  95  76  98 / 20  30  10  20

.OKC...NONE.
.TX...NONE.

In the hours before

Local storm report, Jun 29, 8:30 PM CDT, 4 hours 7 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
830 PM CDT WED JUN 29 1994

TIME       COUNTY        EVENT/LOCATION

715 PM     WOODS         77 MPH WIND GUST AT MESONET STATION 16 MILES
                           NNE OF FREEDOM.

720 PM     WOODS         71 MPH WIND GUST AT 16 MILES NNE OF FREEDOM.

725 PM     WOODS         STILL BLOWING WITH 62 MPH WIND GUST 16 MILES
                           NNE OF FREEDOM.

725 PM     WOODWARD      71 MPH WIND GUST AT MESONET STATION 20 MILES
                           NNE OF MOORELAND.

740 PM     WOODS         HIGH WINDS KNOCKED POWER LINES AND TREES DOWN
                           IN ALVA.

754 PM     ELLIS         60 MPH WINDS AT GAGE AIRPORT.

820 PM     ALFALFA       ESTIMATED 70 MPH WINDS AT CHEROKEE.
  _
SPEG

Local storm report, Jun 29, 10:04 PM CDT, 2 hours 33 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1005 PM CDT WED JUN 29 1994

TIME       COUNTY        EVENT/LOCATION

815-820 PM ALFALFA       62 MPH WIND GUST AT 815 PM AND 63 MPH WIND GUST
                           AT 820 PM AT MESONET STATION NEAR CHEROKEE.
                           TREE LIMBS WERE DOWNED AND WINDOWS BLOWN OUT
                           IN CHEROKEE.

840 PM     ELLIS         60 MPH WIND 10 MILES WEST AND 7 MILES SOUTH OF
                           ARNETT.

840-845 PM GRANT         63 MPH WIND GUST AT 840 PM AND 61 MPH WIND GUST
                           AT 845 PM AT MESONET STATION 1 MILE SOUTHWEST
                           OF MEDFORD.

845 PM     MAJOR         64 MPH WIND GUST AT MESONET STATION 4 MILES
                           EAST OF MENO.

845 PM     GARFIELD      64 MPH WIND GUST 1 MILE WSW OF LAHOMA.

850-855 PM DEWEY         63 MPH WIND GUST AT 850 PM AND 60 MPH WIND GUST
                           AT 855 PM AT MESONET STATION 4 MILES WNW OF
                           CAMARGO.

855 PM     ROGER MILLS   60 MPH WIND 6 MILES NORTHWEST OF ROLL.

900-905 PM GARFIELD      64 MPH WIND GUST AT 900 PM AND 60 MPH WIND GUST
                           AT 905 PM.

930 PM     ROGER MILLS   61 MPH WIND GUST AT MESONET STATION NEAR
                           CHEYENNE.

950 PM     BECKHAM       TREE LIMBS DOWNED ALONG SH 34...6 MILES NORTH
                           OF ELK CITY.
H
  _
SPEG

Local storm report, Jun 29, 10:05 PM CDT, 2 hours 32 minutes before

LOCAL STORM REPORT...CORRECTED...
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1005 PM CDT WED JUN 29 1994

TIME       COUNTY        EVENT/LOCATION

815-820 PM ALFALFA       62 MPH WIND GUST AT 815 PM AND 63 MPH WIND GUST
                           AT 820 PM AT MESONET STATION NEAR CHEROKEE.
                           TREE LIMBS WERE DOWNED AND WINDOWS BLOWN OUT
                           IN CHEROKEE.

840 PM     ELLIS         60 MPH WIND 10 MILES WEST AND 7 MILES SOUTH OF
                           ARNETT.

840-845 PM GRANT         63 MPH WIND GUST AT 840 PM AND 61 MPH WIND GUST
                           AT 845 PM AT MESONET STATION 1 MILE SOUTHWEST
                           OF MEDFORD.

845 PM     MAJOR         64 MPH WIND GUST AT MESONET STATION 4 MILES
                           EAST OF MENO.

845 PM     GARFIELD      64 MPH WIND GUST 1 MILE WSW OF LAHOMA.

850-855 PM DEWEY         63 MPH WIND GUST AT 850 PM AND 60 MPH WIND GUST
                           AT 855 PM AT MESONET STATION 4 MILES WNW OF
                           CAMARGO.

855 PM     ROGER MILLS   60 MPH WIND 6 MILES NORTHWEST OF ROLL.

900-905 PM GARFIELD      64 MPH WIND GUST AT 900 PM AND 60 MPH WIND GUST
                           AT 905 PM AT MESONET STATION 3 MILES
                           SOUTHEAST OF BRECKENRIDGE.

930 PM     ROGER MILLS   61 MPH WIND GUST AT MESONET STATION NEAR
                           CHEYENNE.

950 PM     BECKHAM       TREE LIMBS DOWNED ALONG SH 34...6 MILES NORTH
                           OF ELK CITY.

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SPEG

...ADDED LOCATION OF 900 PM GARFIELD COUNTY REPORT...

Local storm report, Jun 29, 10:07 PM CDT, 2 hours 30 minutes before

LOCAL STORM REPORT...CORRECTED...
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1005 PM CDT WED JUN 29 1994

TIME       COUNTY        EVENT/LOCATION

815-820 PM ALFALFA       62 MPH WIND GUST AT 815 PM AND 63 MPH WIND GUST
                           AT 820 PM AT MESONET STATION NEAR CHEROKEE.
                           TREE LIMBS WERE DOWNED AND WINDOWS BLOWN OUT
                           IN CHEROKEE.

840 PM     ELLIS         60 MPH WIND 10 MILES WEST AND 7 MILES SOUTH OF
                           ARNETT.

840-845 PM GRANT         63 MPH WIND GUST AT 840 PM AND 61 MPH WIND GUST
                           AT 845 PM AT MESONET STATION 1 MILE SOUTHWEST
                           OF MEDFORD.

845 PM     MAJOR         64 MPH WIND GUST AT MESONET STATION 4 MILES
                           EAST OF MENO.

845 PM     GARFIELD      64 MPH WIND GUST 1 MILE WSW OF LAHOMA.

850-855 PM DEWEY         63 MPH WIND GUST AT 850 PM AND 60 MPH WIND GUST
                           AT 855 PM AT MESONET STATION 4 MILES WNW OF
                           CAMARGO.

855 PM     ROGER MILLS   60 MPH WIND 6 MILES NORTHWEST OF ROLL.

900-905 PM GARFIELD      64 MPH WIND GUST AT 900 PM AND 60 MPH WIND GUST
                           AT 905 PM AT MESONET STATION 3 MILES
                           SOUTHEAST OF BRECKENRIDGE.

930 PM     ROGER MILLS   61 MPH WIND GUST AT MESONET STATION NEAR
                           CHEYENNE.

950 PM     BEVCKHAM       TREE LIMBS DOWNED ALONG SH 34...6 MILES NORTH
                           OF ELK CITY.

  _
SPEG

...ADDED LOCATION OF 900 PM GARFIELD COUNTY REPORT...

Local storm report, Jun 29, 11:49 PM CDT, 48 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1150 PM CDT WED JUN 29 1994

TIME       COUNTY        EVENT/LOCATION

1000 PM    CUSTER        60 MPH WIND AT MESONET STATION 4 MILES WSW
                          OF WEATHERFORD.

1005 PM    BLAINE        75 MPH WIND REPORTED 5 MILES WEST OF WATONGA.

1015 PM    WASHITA       59 MPH WIND GUST AT MESONET STATION NEAR
                           RETROP.

1020 PM    BECKHAM       TREES BLOWN DOWN INTO POWER LINES IN ELK CITY.

1045 PM    WASHITA       59 MPH GUST ON THE NORTH SIDE OF CORDELL.

1058 PM    GREER         60-70 MPH WIND IN GRANITE.

1104 PM    GREER         1.5 INCH HAIL IN GRANITE.

1106 PM    JACKSON       63 \MPH GUST AT ALTUS AFB.

1133 PM    KIOWA         60 MPH GUST 2.5 MILES WEST OF MOUNTAIN PARK.

1138 PM    KIOWA         60 MPH GUST IN SNYDER.
  _
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Local storm report, Jun 29, 11:50 PM CDT, 47 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
1150 PM CDT WED JUN 29 1994

TIME       COUNTY        EVENT/LOCATION

1000 PM    CUSTER        60 MPH WIND AT MESONET STATION 4 MILES WSW
                          OF WEATHERFORD.

1005 PM    BLAINE        75 MPH WIND REPORTED 5 MILES WEST OF WATONGA.

1015 PM    WASHITA       59 MPH WIND GUST AT MESONET STATION NEAR
                           RETROP.

1020 PM    BECKHAM       TREES BLOWN DOWN INTO POWER LINES IN ELK CITY.

1045 PM    WASHITA       59 MPH GUST ON THE NORTH SIDE OF CORDELL.

1058 PM    GREER         60-70 MPH WIND IN GRANITE.

1104 PM    GREER         1.5 INCH HAIL IN GRANITE.

1106 PM    JACKSON       63 MPH GUST AT ALTUS AFB.

1133 PM    KIOWA         60 MPH GUST 2.5 MILES WEST OF MOUNTAIN PARK.

1138 PM    KIOWA         60 MPH GUST IN SNYDER.
  _
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 7:25 PM CDT	Severe Thunderstorm Warning	OUN	Woods	45 min
Jun 29, 7:49 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	41 min
Jun 29, 8:14 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	46 min
Jun 29, 8:23 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Major	52 min
Jun 29, 8:23 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	52 min
Jun 29, 8:48 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Roger Mills	52 min
Jun 29, 9:09 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Noble	51 min
Jun 29, 9:30 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey	45 min
Jun 29, 9:30 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Washita	45 min
Jun 29, 9:30 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	45 min
Jun 29, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Caddo, Custer, Washita	47 min
Jun 29, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Greer	47 min
Jun 29, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Blaine	47 min
Jun 29, 10:48 PM CDT	Tornado Warning	OUN	Greer	27 min
Jun 29, 10:56 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Washita	49 min
Jun 29, 11:08 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa	52 min
Jun 29, 11:25 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	50 min
Jun 29, 11:47 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Tillman	43 min
Jun 29, 11:47 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	53 min
Jun 30, 12:14 AM CDT	Severe Thunderstorm Warning	OUN	Jackson	46 min
Jun 30, 12:19 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton	41 min
Jun 30, 12:49 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	41 min
Jun 30, 12:56 AM CDT	Severe Thunderstorm Warning	OUN	Jackson	49 min
Jun 30, 1:22 AM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	53 min
Jun 30, 1:41 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Love	49 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1994 Every severe thunderstorm warning in 1994

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.