Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 102, NWS Tulsa, OK

May 16, 1990LeFlore County, Sequoyah County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 16, 1990, 5:45 PM CDT for LeFlore County, Sequoyah County, Oklahoma. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
May 16, 1990, 5:45 PM CDT (22:45 UTC)
Expired
May 16, 1990, 6:45 PM CDT
In force
60 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties LeFlore County, OK, Sequoyah County, OK

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Springfield, MO (KUMN), launched 12:00Z, 10.8 hours before the alert went out and 207 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 12:00Z on 1990-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 151 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, Springfield, MO at 12:00Z on 1990-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 390 square meters per square second.19395878Sfc1 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
151 J/kg
Mixed-layer CIN
-207 J/kg
Mixed-layer LCL
689 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
390 m²/s²
0-3 km storm-relative helicity
446 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSM 162247
SVRFSM
OKC135-079-162345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
545 PM CDT WED MAY 16 1990
 
THE NATIONAL WEATHER SERVICE IN FORT SMITH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST OKLAHOMA
 
   ...SEQUOYAH COUNTY
 
IN SOUTHEAST OKLAHOMA
 
   ...LE FLORE COUNTY
 
RADAR AT 545 PM INDICATED A SEVERE THUNDERSTORM 25 MILE WEST OF FORT
SMITH ARKANSAS OR 15 MILES WEST OF SPIRO OKLAHOMA. THE STORM IS
MOVING EAST AT 20 MPH.  THIS STORM WILL PRODUCE DAMAGING WINDS AND
LARGE HAIL AND VERY HEAVY RAIN.
 
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 7:52 PM CDTSevere Thunderstorm WarningTSAPawnee53 min
May 15, 8:08 PM CDTTornado WarningTSAPawnee37 min
May 15, 8:37 PM CDTSevere Thunderstorm WarningTSACreek53 min
May 15, 8:48 PM CDTSevere Thunderstorm WarningTSAPawnee42 min
May 15, 9:07 PM CDTTornado WarningTSACreek53 min
May 15, 9:32 PM CDTSevere Thunderstorm WarningTSAOsage43 min
May 15, 9:43 PM CDTSevere Thunderstorm WarningTSATulsa47 min
May 15, 10:07 PM CDTTornado WarningTSATulsa38 min
May 15, 10:10 PM CDTSevere Thunderstorm WarningTSAOsage65 min
May 15, 10:16 PM CDTSevere Thunderstorm WarningTSAWagoner44 min
May 15, 10:42 PM CDTSevere Thunderstorm WarningTSATulsa, Washington48 min
May 15, 10:57 PM CDTSevere Thunderstorm WarningTSAPawnee48 min
May 15, 11:09 PM CDTSevere Thunderstorm WarningTSARogers51 min
May 15, 11:09 PM CDTSevere Thunderstorm WarningTSAOsage51 min
May 15, 11:33 PM CDTSevere Thunderstorm WarningTSAMayes42 min
May 15, 11:47 PM CDTSevere Thunderstorm WarningTSARogers, Washington43 min
May 15, 11:58 PM CDTSevere Thunderstorm WarningTSAOsage47 min
May 16, 12:12 AM CDTSevere Thunderstorm WarningTSADelaware48 min
May 16, 12:24 AM CDTSevere Thunderstorm WarningTSACraig51 min
May 16, 12:30 AM CDTTornado WarningTSAOsage, Washington45 min
May 16, 2:07 PM CDTSevere Thunderstorm WarningTSANowata53 min
May 16, 2:39 PM CDTSevere Thunderstorm WarningTSACraig51 min
May 16, 2:56 PM CDTSevere Thunderstorm WarningTSAMayes, Rogers64 min
May 16, 3:54 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Muskogee, Okmulgee, Wagoner51 min
May 16, 4:02 PM CDTSevere Thunderstorm WarningTSACherokee, Delaware, Mayes58 min
May 16, 4:27 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg48 min
May 16, 4:47 PM CDTSevere Thunderstorm WarningTSACherokee43 min
May 16, 5:20 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer, Pittsburg40 min
May 16, 5:33 PM CDTSevere Thunderstorm WarningTSAAdair27 min
May 16, 6:00 PM CDTSevere Thunderstorm WarningTSALatimer30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1990Every severe thunderstorm warning in 1990

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.