Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 358, NWS Tulsa, OK

June 1, 1999LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 1, 1999, 9:26 PM CDT for LeFlore County, Oklahoma. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 1, 1999, 9:26 PM CDT (02:26 UTC)
Expired
Jun 1, 1999, 10:15 PM CDT
In force
49 min
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County LeFlore County, OK

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 1, 5:00 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.4 hours before the alert went out and 237 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1999-06-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1899 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1999-06-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1899 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
928 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
173 m²/s²
Significant tornado parameter
0.9
Supercell composite
6.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 1, 9:10 PM CDT, 16 minutes earlier.

Area forecast discussion, Jun 1, 9:10 PM CDT, 16 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
910 PM CDT TUE JUN 1 1999

JUST SENT OUT A QUICK UPDATE TO REMOVE TORNADO WATCH HEADLINES AND
MENTION OF SEVERE IN ZONES WHERE THE TORNADO WATCH HAS BEEN
CANCELLED.  ALSO DID A QUICK REVAMP OF POPS TO MATCH CURRENT RADAR
TRENDS.  A MORE THOROUGH UPDATE WILL BE FORTHCOMING WHEN THE CURRENT
TORNADO WATCHES EXPIRE AT 10 PM.

FCSTID = 19

.TUL...
AR...NONE.

OK...NONE.

In the hours before

Local storm report, Jun 1, 8:14 PM CDT, 1 hour 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
814 PM CDT TUE JUN 01 1999

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

0813 PM    3 E VAN BUREN             AR    60 MPH TSTM GUST
06/01/99   CRAWFORD
Local storm report, Jun 1, 8:14 PM CDT, 1 hour 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
814 PM CDT TUE JUN 01 1999

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

0813 PM    3 E VAN BUREN             AR    60 MPH TSTM GUST
06/01/99   CRAWFORD
Local storm report, Jun 1, 8:33 PM CDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
833 PM CDT TUE JUN 01 1999

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

0827 PM    4 W HACKETT               AR    60 MPH TSTM GUST
06/01/99   SEBASTIAN

0833 PM    HUNTINGTON                AR    65 MPH TSTM GUST
06/01/99   SEBASTIAN
Local storm report, Jun 1, 8:33 PM CDT, 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
833 PM CDT TUE JUN 01 1999

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

0827 PM    4 W HACKETT               AR    60 MPH TSTM GUST
06/01/99   SEBASTIAN

0833 PM    HUNTINGTON                AR    65 MPH TSTM GUST
06/01/99   SEBASTIAN
Special weather statement, Jun 1, 8:40 PM CDT, 46 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
840 PM CDT TUE JUN 1 1999

OKZ057-058-061>063-065>072-ARZ001-020200-

TORNADO WATCH 352 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES
IN

EASTERN OKLAHOMA...
   ADAIR          CHEROKEE      CRAIG            DELAWARE
   MAYES          MCINTOSH      MUSKOGEE         OKFUSKEE
   OKMULGEE       OTTAWA        ROGERS           SEQUOYAH
   WAGONER

NORTHWEST ARKANSAS...
   BENTON

OKZ074-ARZ002-010-011-019-020-029-020200-

TORNADO WATCH 352 REMAINS IN EFFECT UNTIL 1000 PM CDT FOR THE
FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
   HASKELL

NORTHWEST ARKANSAS...
   CARROLL        CRAWFORD      FRANKLIN         MADISON
   SEBASTIAN      WASHINGTON

OKZ049-053-073-075-076-020200-

TORNADO WATCH 354 REMAINS IN EFFECT UNTIL 1000 PM CDT FOR THE
FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
   CHOCTAW        LATIMER       LEFLORE          PITTSBURG
   PUSHMATAHA
Special weather statement, Jun 1, 8:40 PM CDT, 46 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
840 PM CDT TUE JUN 1 1999

OKZ057-058-061>063-065>072-ARZ001-020200-

TORNADO WATCH 352 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES
IN

EASTERN OKLAHOMA...
   ADAIR          CHEROKEE      CRAIG            DELAWARE
   MAYES          MCINTOSH      MUSKOGEE         OKFUSKEE
   OKMULGEE       OTTAWA        ROGERS           SEQUOYAH
   WAGONER

NORTHWEST ARKANSAS...
   BENTON

OKZ074-ARZ002-010-011-019-020-029-020200-

TORNADO WATCH 352 REMAINS IN EFFECT UNTIL 1000 PM CDT FOR THE
FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
   HASKELL

NORTHWEST ARKANSAS...
   CARROLL        CRAWFORD      FRANKLIN         MADISON
   SEBASTIAN      WASHINGTON

OKZ049-053-073-075-076-020200-

TORNADO WATCH 354 REMAINS IN EFFECT UNTIL 1000 PM CDT FOR THE
FOLLOWING COUNTIES IN

EASTERN OKLAHOMA...
   CHOCTAW        LATIMER       LEFLORE          PITTSBURG
   PUSHMATAHA

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 7:04 PM CDTTornado WarningTSAHaskell, McIntosh, Muskogee41 min
Jun 1, 7:12 PM CDTSevere Thunderstorm WarningTSAPittsburg48 min
Jun 1, 7:21 PM CDTSevere Thunderstorm WarningTSASequoyah39 min
Jun 1, 7:27 PM CDTTornado WarningTSAPittsburg33 min
Jun 1, 7:40 PM CDTTornado WarningTSAHaskell, McIntosh, Muskogee50 min
Jun 1, 7:47 PM CDTSevere Thunderstorm WarningTSASequoyah58 min
Jun 1, 7:47 PM CDTSevere Thunderstorm WarningTSALeFlore58 min
Jun 1, 8:26 PM CDTTornado WarningTSAHaskell, Latimer, Pittsburg49 min
Jun 1, 8:41 PM CDTSevere Thunderstorm WarningTSALeFlore49 min
Jun 1, 8:44 PM CDTSevere Thunderstorm WarningTSAChoctaw46 min
Jun 1, 9:16 PM CDTTornado WarningTSALatimer29 min
Jun 1, 9:31 PM CDTSevere Thunderstorm WarningTSAChoctaw44 min
Jun 1, 9:56 PM CDTSevere Thunderstorm WarningTSACarroll, Madison49 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1999Every severe thunderstorm warning in 1999

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.