Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 255, NWS Tulsa, OK

July 15, 1997Okmulgee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 15, 1997, 5:14 PM CDT for Okmulgee County, Oklahoma. It was in force for 31 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: Jul 15, 1997, 5:14 PM CDT (22:14 UTC)
Expired: Jul 15, 1997, 5:45 PM CDT
In force: 31 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Okmulgee County, OK

The radar

The Tulsa radar (KINX), 69 km from the middle of the area, began a volume at 22:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.2 hours before the alert went out and 138 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: 1353 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 1708 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 152215 RRA
SVRTUL
OKC111-152245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
514 PM CDT TUE JUL 15 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST OKLAHOMA
 
   ...EASTERN OKMULGEE COUNTY
 
AT 5 12 PM A SEVERE THUNDERSTORM WAS 3 MILES EAST OF MORRIS. MOVEMENT
WAS TOWARD THE NORTH ATd 5 MILES AN HOUR.
 
HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED
IN THE WARNED AREA.
 
KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.

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 Jul 15, 3:50 PM CDT, 1 hour 24 minutes earlier.

Area forecast discussion, Jul 15, 3:50 PM CDT, 1 hour 24 minutes before

FPUS3 KTUL 152049
AFDTUL

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
350 PM CDT TUE JUL 15 1997

COMPLEX OF TSRA THAT MVD FM SW AR INTO NE TX SENT AN OUTFLOW BNDRY
NW INTO SE OK WHICH HELPED DVLPD SCT STRG/SVR TSRA THIS AFTN.
FURTHER N FORCING IS WK AN HV ONLY SEEN A FEW ISOLD TSRA. APRS THAT
ACTVTY SHLD QUIET DOWN AFT LOSS OF HEATING. THUS WL WORD 1ST PD
POPS FOR THIS EVE.

XCPN WL BE FOR AREAS N AND W OF TUL WHERE THERE IS A SLGT CHC OF
TSRA MVG IN FM THE NW LATE TNGT. NOT CLEAR THAT TSRA WL FM IN CNTRL
KS TNGT AND IF THEY DO WHETHER THEY WL MV INTO PARTS OF NE OK BFR
MRNG THUS STICKING W/JUST 20 POPS.

MDLS ARE ALL IN GENERAL AGREEMENT IN SLOWLY MVG A S/W CRNTLY SEEN
IN ERN CO ARND THE EDGE OF THE UPR RDG ANCHORED OVER THE SW US.
THIS BRINGS THE VORT MAX SLOWLY SEWD AND THEN S ACRS FA THRU THE
FCST PD. THUS WL KEEP A CHC OF TSRA GOING FOR PARTS OF THE FA WED
INTO THU. BETTER CHC SEEMS TO BE DURING MAX HEATING TMRW BUT CANNOT
RULE OUT A REPEAT ON THU ESPC ACRS SRN SCTNS.

PRELIM NMBRS
TUL 75/94 75/95 1321     FSM 72/95 71/94 1422
MLC 71/95 72/94 1322     BVO 72/94 72/95 2321
FYV 66/90 66/90 1321     IDB 70/95 70/94 1423
BYV 64/90 65/90 1322

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

In the hours before

Special weather statement, Jul 15, 1:00 PM CDT, 4 hours 14 minutes before

ARZ001-002-010-011-019-029-OKZ054>076-161200-

EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT TUE JUL 15 1997

ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND
THIS EVENING OVER WEST CENTRAL ARKANSAS AND PARTS OF EASTERN
OKLAHOMA. THE THREAT AREA IS MAINLY SOUTH AND WEST OF A LINE FROM
BARTLESVILLE OKLAHOMA TO FORT SMITH ARKANSAS.

THE AIRMASS ACROSS MOST OF THE AREA WILL BECOME VERY UNSTABLE BY
LATE THIS AFTERNOON. WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED TO
DEVELOP IN THE HEAT OF THE AFTERNOON AS TEMPERATURES RISE INTO THE
LOWER AND MID 90S. A WEAK SURFACE BOUNDARY...EXTENDING FROM SOUTH
OF TULSA TO NEAR FORT SMITH EARLY THIS AFTERNOON...MAY HELP FOCUS
THE ACTIVITY.

ANY THUNDERSTORMS THAT DEVELOP WILL HAVE THE POTENTIAL TO PRODUCE
LARGE HAIL AND DAMAGING DOWNBURST WINDS. THUNDERSTORMS WILL MOVE
VERY SLOWLY WITH WEAK WINDS ALOFT...AND VERY HEAVY RAINS COULD FALL
IN A FEW AREAS. THE STORMS WILL DIMINISH RAPIDLY AFTER SUNSET.

EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS SHOULD
MONITOR THE LATEST WEATHER CONDITIONS AND BE READY FOR POSSIBLE
ACTIVATION THROUGH EARLY THIS EVENING.

Special weather statement, Jul 15, 1:01 PM CDT, 4 hours 13 minutes before

ARZ001-002-010-011-019-029-OKZ054>076-161200-

EASTERN OKLAHOMA/NORTHWEST ARKANSAS THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT TUE JUL 15 1997

ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND
THIS EVENING OVER WEST CENTRAL ARKANSAS AND PARTS OF EASTERN
OKLAHOMA. THE THREAT AREA IS MAINLY SOUTH AND WEST OF A LINE FROM
BARTLESVILLE OKLAHOMA TO FORT SMITH ARKANSAS.

THE AIRMASS ACROSS MOST OF THE AREA WILL BECOME VERY UNSTABLE BY
LATE THIS AFTERNOON. WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED TO
DEVELOP IN THE HEAT OF THE AFTERNOON AS TEMPERATURES RISE INTO THE
LOWER AND MID 90S. A WEAK SURFACE BOUNDARY...EXTENDING FROM SOUTH
OF TULSA TO NEAR FORT SMITH EARLY THIS AFTERNOON...MAY HELP FOCUS
THE ACTIVITY.

ANY THUNDERSTORMS THAT DEVELOP WILL HAVE THE POTENTIAL TO PRODUCE
LARGE HAIL AND DAMAGING DOWNBURST WINDS. THUNDERSTORMS WILL MOVE
VERY SLOWLY WITH WEAK WINDS ALOFT...AND VERY HEAVY RAINS COULD FALL
IN A FEW AREAS. THE STORMS WILL DIMINISH RAPIDLY AFTER SUNSET.

EMERGENCY MANAGEMENT AGENCIES AND STORM SPOTTER GROUPS SHOULD
MONITOR THE LATEST WEATHER CONDITIONS AND BE READY FOR POSSIBLE
ACTIVATION THROUGH EARLY THIS EVENING.

Local storm report, Jul 15, 2:56 PM CDT, 2 hours 18 minutes before

PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
256 PM CDT TUE JUL 15 1997

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

0220 PM    1 SE STIGLER              OK   0.75 INCH HAIL
07/15/97   HASKELL

Local storm report, Jul 15, 2:57 PM CDT, 2 hours 17 minutes before

PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
256 PM CDT TUE JUL 15 1997

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

0220 PM    1 SE SPTIGLER              OK   0.75 INCH HAIL
07/15/97   HASKELL

Local storm report, Jul 15, 3:52 PM CDT, 1 hour 22 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
352 PM CDT TUE JUL 15 1997

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

0320 PM    5 SW MCALESTER            OK   1.00 INCH HAIL AT TOLL
07/15/97   PITTSBURG                      BOOTH ON INDIAN NATIONS
                                          TURNPIKE SOUTHWEST OF
                                          MCALESTER

Local storm report, Jul 15, 3:54 PM CDT, 1 hour 20 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
352 PM CDT TUE JUL 15 1997

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

0320 PM    5 SW MCALESTER      $      OK   1.00 INCH HAIL AT TOLL
07/15/97   PITTSBURG                      BOOTH ON INDIAN NATIONS
                                          TURNPIKE SOUTHWEST OF
                                          MCALESTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 6:23 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee	37 min
Jul 15, 2:09 PM CDT	Severe Thunderstorm Warning	TSA	Haskell	36 min
Jul 15, 3:17 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	43 min
Jul 15, 4:14 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh	46 min
Jul 15, 5:05 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	25 min
Jul 15, 5:09 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh	36 min
Jul 15, 6:08 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	37 min
Jul 15, 6:49 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Wagoner	41 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997 Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.