Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 341, NWS Tulsa, OK

October 31, 1997Pittsburg County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Oct 31, 1997, 12:45 AM CST for Pittsburg County, Oklahoma. It was in force for 45 min. 1 report 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: Oct 31, 1997, 12:45 AM CST (06:45 UTC)
Expired: Oct 31, 1997, 1:30 AM CST
In force: 45 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Pittsburg County, OK

What was reported inside it

Time	Report	Where	Remark
Oct 31, 12:50 AM CST	Hail 0.88	Pittsburg, 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, 6.8 hours before the alert went out and 154 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: 271 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 1712 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 159 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.

000 
TTAA00 KTUL 310646 RRA
SVRTUL
OKC121-310730-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1245 AM CST FRI OCT 31 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  130 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST OKLAHOMA
 
   ...PITTSBURG COUNTY
 
AT 1243 AM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM IN SOUTHERN
PITTSBURG COUNTY NEAR THE COMMUNITY OF PITTSBURG. MOVEMENT WAS TO
THE EAST NORTHEAST AT 20 MILES AN HOUR.
 
 
ANOTHER STRONG STORM WAS OVER NORTHERN PITTSBURG COUNTY BETWEEN
INDIANOLA AND CANADIAN.
 
 
HAIL TO THE SIZE OF DIMES 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 Oct 30, 9:11 PM CST, 3 hours 34 minutes earlier.

Area forecast discussion, Oct 30, 9:11 PM CST, 3 hours 34 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
910 PM CST THU OCT 30 1997

SFC TROF HAS NOT BEEN MVG MUCH IF AT ALL OVR THE PAST FEW HRS ALTHO
IT HAS MADE IT ACRS MUCH OF OSAGE AND PAWNEE CNTYS BFR XTNDG DOWN
INTO CNTRL OK. MEANWHILE A S/W IS CRNTLY MVG ACRS OK. THE COOLER
TEMPS ALOFT AND LIFT HV BEEN ENOUGH FOR AN ISOLD TSRA TO DVLP AHEAD
OF THE SFC BNDRY IN THE AREA OF BTR MOIST CONV AND INSTABILITY IN
SCNTRL OK. THIS TSRA EVENTUALLY COLLAPSED BUT ANOTHER STRM DVLPD ON
ITS OUTFLOW.

QUESTION IS WHETHER ADNTL PRECIP WL DVLP TNGT AND MV INTO FA AS THE
S/W CONTS OFF TO THE E AND ALSO IF/HOW MUCH THE SFC BNDRY WL MV EWD.
FORCING NOT TOO IMPRESSIVE BUT W/PLENTY OF LLVL MOISTURE AM HESITANT
TO MAKE MUCH CHG TO POPS. MAY LOWER THEM A LTL N OF I-40 WHERE
LIMITED INSTABILITY AND LTL LLVL CONV ARE FCST. MEANWHILE IT APRS
THAT THE SFC TROF WL CONT ON ITS VERY SLOW TREK. NEW ETA AND NGM ARE 
IN VERY GOOD AGREEMENT IN THE TROF POSN AT 12Z W/THIS FEATURE ONLY
MAKING IT INTO THE FAR ERN CNTYS OF OK.

SO WL MAKE SOME MINOR ADJS TO ZFP BUT OVRALL FCST SEEMS IN GOOD
SHAPE.

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

In the hours before

Local storm report, Oct 30, 11:32 PM CST, 1 hour 13 minutes before

PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1132 PM CST THU OCT 30 1997

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

1105 PM    EUFAULA                   OK   .88 INCH HAIL
10/30/97   MCINTOSH

1112 PM    4NE EUFAULA               OK   .75 INCH HAIL
10/30/97   MCINTOSH

Local storm report, Oct 30, 11:34 PM CST, 1 hour 11 minutes before

PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1132 PM CST THU OCT 30 1997

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

1105 PM    EUFAULA                   OK   .88 INCH HAIL
10/30/97   MCINTOSH

1112 PM    4NE EUFAULA               OK   .75 INCH HAIL
10/30/97   MCINTOSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 30, 11:01 PM CST	Severe Thunderstorm Warning	TSA	McIntosh	44 min
Oct 30, 11:15 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	45 min
Oct 30, 11:56 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	49 min
Oct 31, 1:04 AM CST	Flash Flood Warning	TSA	Pittsburg	116 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.