Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 263, NWS Tulsa, OK

July 15, 1997Osage County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 15, 1997, 8:27 PM CDT for Osage County, Oklahoma. It was in force for 48 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 15, 1997, 8:27 PM CDT (01:27 UTC)
Expired: Jul 15, 1997, 9:15 PM CDT
In force: 48 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Osage County, OK

The radar

The Tulsa radar (KINX), 90 km from the middle of the area, began a volume at 01:28 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.

What was reported inside it

Time	Report	Where	Remark
Jul 15, 9:15 PM CDT	Hail 0.88	Hominy, OK
Jul 15, 9:25 PM CDT	Hail 1	Hominy, OK	Severe thunderstorms developed in eastern Oklahoma during the afternoon and evening of July 15th. Strong thunderstorm winds damaged 1 building and 1 house and downed several trees and power poles 4 miles west of Okemah. Thunderstorm winds gusted to 61 miles an

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, 1.5 hours before the alert went out and 181 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: 1184 J/kg
Mixed-layer CIN: -176 J/kg
Mixed-layer LCL: 1459 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

496 
WUUS1 KTUL 160128 RRA
SVRTUL
OKC113-160215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
827 PM CDT TUE JUL 15 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  915 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST OKLAHOMA
 
   ...SOUTHEASTERN OSAGE COUNTY
 
AT 825 PM...RADAR INDICATED THREE SEVERE THUNDERSTORMS. ONE WAS LOCATED
JUST SOUTH OF AVANT...ANOTHER WAS LOCATED 4 MILES WEST OF SPERRY AND THE
OTHER WAS ALONG THE OSAGE-PAWNEE COUNTY LINE JUST SOUTHEAST OF
CLEVELAND. THESE STORMS WERE DRIFTING SLOWLY WEST.
 
HAIL TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO 70 MPH CAN BE EXPECTED
IN THE WARNED AREA.
 
DURING THE STORM MOVE INDOORS AND STAY AWAY FROM WINDOWS.
TO PROTECT YOURSELF FROM LIGHTNING DO NOT USE THE TELEPHONE
OR HAND HELD ELECTRICAL APPLIANCES...UNLESS IN AN EMERGENCY.
MOTORISTS SHOULD BE ALERT FOR WATER ON ROADWAYS AND NEVER
DRIVE ONTO A FLOODED ROAD.
 
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, 4 hours 37 minutes earlier.

Area forecast discussion, Jul 15, 3:50 PM CDT, 4 hours 37 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

Local storm report, Jul 15, 2:56 PM CDT, 5 hours 31 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, 5 hours 30 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, 4 hours 35 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, 4 hours 33 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, 7:03 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	42 min
Jul 15, 7:22 PM CDT	Flash Flood Warning	TSA	Mayes, Rogers, Wagoner	2 hr
Jul 15, 7:27 PM CDT	Severe Thunderstorm Warning	TSA	Rogers	48 min
Jul 15, 7:31 PM CDT	Severe Thunderstorm Warning	TSA	Washington	44 min
Jul 15, 7:36 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa	54 min
Jul 15, 7:48 PM CDT	Flash Flood Warning	TSA	Tulsa	117 min
Jul 15, 8:24 PM CDT	Severe Thunderstorm Warning	TSA	Pawnee	51 min
Jul 15, 9:14 PM CDT	Severe Thunderstorm Warning	TSA	Osage	46 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.