Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 331, NWS Tulsa, OK

October 9, 1997Sequoyah County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Oct 9, 1997, 2:43 AM CDT for Sequoyah County, Oklahoma. It was in force for 32 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
Oct 9, 1997, 2:43 AM CDT (07:43 UTC)
Expired
Oct 9, 1997, 3:15 AM CDT
In force
32 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Sequoyah County, OK

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 7.7 hours before the alert went out and 178 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, Springfield, MO at 00:00Z on 1997-10-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1997-10-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 319 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
687 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
319 m²/s²
0-3 km storm-relative helicity
390 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 090744 RRA
SVRTUL
OKC135-090815-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
243 AM CDT THU OCT 9 1997
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  315 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL OKLAHOMA
 
   ...SEQUOYAH COUNTY
 
AT 242 AM...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM NEAR
STILWELL TO BUNCH TO NEAR VIAN. THE STORMS WERE MOVING EAST AT 35 MPH.
MABRLE CITY...VIAN...SALLISAW...BRUSHY AND MCKEY ARE IN THE PATH OF THIS
STORM.
 
 
WIND GUSTS TO 60 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 8, 7:46 PM CDTTornado WarningTSAOsage44 min
Oct 8, 8:26 PM CDTTornado WarningTSAOsage49 min
Oct 8, 8:31 PM CDTSevere Thunderstorm WarningTSACreek59 min
Oct 8, 9:34 PM CDTSevere Thunderstorm WarningTSACreek41 min
Oct 8, 10:08 PM CDTSevere Thunderstorm WarningTSACreek52 min
Oct 8, 10:44 PM CDTSevere Thunderstorm WarningTSACreek, Okmulgee, Tulsa61 min
Oct 8, 11:29 PM CDTSevere Thunderstorm WarningTSAWagoner61 min
Oct 8, 11:49 PM CDTSevere Thunderstorm WarningTSACreek, Okfuskee56 min
Oct 9, 1:29 AM CDTSevere Thunderstorm WarningTSAMuskogee46 min
Oct 9, 2:17 AM CDTFlash Flood WarningTSAMuskogee3 hr
Oct 9, 2:30 AM CDTSevere Thunderstorm WarningTSAAdair45 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; the sounding from the Mesonet's radiosonde archive.