Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 166, NWS Tulsa, OK

May 26, 1990Osage County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 26, 1990, 10:15 PM CDT for Osage County, Oklahoma. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
May 26, 1990, 10:15 PM CDT (03:15 UTC)
Expired
May 26, 1990, 11:00 PM CDT
In force
45 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Osage 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

Norman, OK (KOUN), launched 00:00Z, 3.3 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 1990-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3596 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 1990-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 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
3596 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
867 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
261 m²/s²
Significant tornado parameter
4.5
Supercell composite
18.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 270315
SVRTUL
OKC113-270400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1015 PM CDT SAT MAY 26 1990
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES ...
 
IN NORTHEAST OKLAHOMA
 
   ...SOUTHERN OSAGE COUNTY
 
AT 1012 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM LOCATED 8 MILES
NORTHWEST OF CLEVELAND OKLAHOMA MOVING TO THE EAST AT 20 MPH.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
LARGE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSIN^ESS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 10:31 PM CDTSevere Thunderstorm WarningTSACreek, Okmulgee44 min
May 27, 12:13 AM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg47 min
May 27, 12:28 AM CDTSevere Thunderstorm WarningTSAHaskell47 min
May 27, 12:56 AM CDTSevere Thunderstorm WarningTSALeFlore, Sequoyah64 min
May 27, 3:43 AM CDTSevere Thunderstorm WarningTSAOkfuskee62 min
May 27, 4:08 AM CDTSevere Thunderstorm WarningTSAMcIntosh, Okmulgee67 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.