Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 340, NWS Tulsa, OK

October 30, 1997Pittsburg County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Oct 30, 1997, 11:56 PM CST for Pittsburg County, Oklahoma. It was in force for 49 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
Oct 30, 1997, 11:56 PM CST (05:56 UTC)
Expired
Oct 31, 1997, 12:45 AM CST
In force
49 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Pittsburg County, OK

What was reported inside it

TimeReportWhereRemark
Oct 31, 12:15 AM CSTThunderstorm Wind 52Nr Kiowa, OK
Oct 31, 12:50 AM CSTHail 0.88Pittsburg, 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, 5.9 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 1997-10-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 271 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, Norman, OK at 00:00Z on 1997-10-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.193958Sfc1 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
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 310556
SVRTUL
OKC121-310645-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1156 PM CST THU OCT 30 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1245 AM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST OKLAHOMA
 
   ...PITTSBURG COUNTY
 
AT 1155 PM...RADAR SHOWED A SEVERE THUNDERSTORM 2 MILES WEST OF
INDIANOLA MOVING EAST NORTHEAST AT R30 MILES AN HOUR. INDIANOLA...
CANADIAN AND CROWDER ARE NEAR THE PATH OF THIS STORM.
 
 
HAIL TO THE SIZE OF NICKELS CAN BE EXPECTED IN THE WARNED AREA.
 
KEEP TUNED TO THIS STATION FOR THE LATEST WEATHER BULLETINS.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 30, 11:01 PM CSTSevere Thunderstorm WarningTSAMcIntosh44 min
Oct 30, 11:15 PM CSTSevere Thunderstorm WarningTSAPittsburg45 min
Oct 31, 12:45 AM CSTSevere Thunderstorm WarningTSAPittsburg45 min
Oct 31, 1:04 AM CSTFlash Flood WarningTSAPittsburg116 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997Every 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.