Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 33, NWS Tulsa, OK

February 6, 1999Osage County, Pawnee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Feb 6, 1999, 10:56 PM CST for Osage County, Pawnee County, Oklahoma. It was in force for 49 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: Feb 6, 1999, 10:56 PM CST (04:56 UTC)
Expired: Feb 6, 1999, 11:45 PM CST
In force: 49 min
Issued by: NWS Tulsa, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Osage County, OK, Pawnee County, OK

What was reported inside it

Time	Report	Where	Remark
Feb 6, 11:20 PM CST	Hail 0.75	Ralston, 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 nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 4.9 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 637 m above ground
0-6 km bulk shear: 100 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: -50 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.

999 
WUUS54 KTSA 070458 RRA
SVRTUL
OKC113-117-070545-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1056 PM CST SAT FEB 6 1999

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
  WESTERN PAWNEE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1145 PM CST

* AT 1056 PM CST A SEVERE THUNDERSTORM WAS LOCATED 18 MILES WEST OF
  RALSTON...MOVING EAST AT 25 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...  RALSTON AND
  FAIRFAX

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED 
IN THE WARNED AREA.

LAT...LON 3664 9707 3640 9705 3639 9661 3667 9665

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 Feb 6, 8:55 PM CST, 2 hours 1 minute earlier.

Area forecast discussion, Feb 6, 8:55 PM CST, 2 hours 1 minute before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
855 PM CST SAT FEB 6 1999

WATCH SET TO EXPIRE AT 9 PM FOR REMAINING COUNTIES IN SOUTHEAST OK.
THREAT OF SEVERE HAS DIMINISHED AND MAIN AREA OF PRECIP WILL BE
EXITING THE AREA OVER THE NEXT HOUR OR TWO.  WILL UPDATE ZONES AT
9 PM TO REFLECT THIS...BUT WILL CONTINUE TO HOLD ONTO SOME LOW POPS
AREAWIDE FOR A LITTLE WHILE LONGER.

.TUL...
OK...NONE.
AR...NONE.

In the hours before

Local storm report, Feb 6, 7:55 PM CST, 3 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
755 PM CST SAT FEB 06 1999

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

0710 PM    WILBURTON                 OK   WIND DAMAGE
02/06/99   LATIMER                        MANY POWER LINES REPORTED
                                          DOWN...SEVERAL TREES
                                          UPROOTED

0710 PM    5 S WILBURTON             OK   WIND DAMAGE
02/06/99   LATIMER                        SEVERAL HOUSES DAMAGED BY
                                          WIND

Local storm report, Feb 6, 8:05 PM CST, 2 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
805 PM CST SAT FEB 06 1999

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

0804 PM    4 E HACKETT               AR   60 MPH TSTM GUST
02/06/99   SEBASTIAN

Local storm report, Feb 6, 8:08 PM CST, 2 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
808 PM CST SAT FEB 06 1999

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

0805 PM    EXCELSIOR                 AR   65 MPH TSTM GUST
02/06/99   SEBASTIAN

0807 PM    2 E HUNTINGTON            AR   70 MPH TSTM GUST
02/06/99   SEBASTIAN

Local storm report, Feb 6, 8:08 PM CST, 2 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
808 PM CST SAT FEB 06 1999

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

0805 PM    EXCELSIOR                 AR   65 MPH TSTM GUST
02/06/99   SEBASTIAN

0807 PM    2 E HUNTINGTON            AR   70 MPH TSTM GUST
02/06/99   SEBASTIAN

Special weather statement, Feb 6, 8:10 PM CST, 2 hours 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
810 PM CST SAT FEB 6 1999

OKZ072-074-075-070309-

SEVERE THUNDERSTORM WATCH NUMBER 42 IS NO LONGER IN EFFECT FOR THE
FOLLOWING COUNTIES IN

EASTERN OKLAHOMA.
         HASKELL             LATIMER             SEQUOYAH

OKZ049-053-076-070300-

SEVERE THUNDERSTORM WATCH NUMBER 42 REMAINS IN EFFECT UNTIL 900 PM
CST FOR THE FOLLOWING COUNTIES IN

EASTERN OKLAHOMA.
         CHOCTAW             LE FLORE            PUSHMATAHA

Local storm report, Feb 6, 8:12 PM CST, 2 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
812 PM CST SAT FEB 06 1999

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

0810 PM    GREENWOOD                 AR   70 MPH TSTM GUST
02/06/99   SEBASTIAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 6, 6:13 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	62 min
Feb 6, 7:18 PM CST	Severe Thunderstorm Warning	TSA	Latimer, LeFlore	42 min
Feb 6, 7:55 PM CST	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	65 min
Feb 6, 7:55 PM CST	Severe Thunderstorm Warning	TSA	LeFlore	65 min
Feb 6, 11:42 PM CST	Severe Thunderstorm Warning	TSA	Osage, Pawnee	63 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1999 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.