Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 37, NWS Tulsa, OK

April 16, 1990Pittsburg County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 16, 1990, 8:10 PM CDT for Pittsburg County, Oklahoma. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Apr 16, 1990, 8:10 PM CDT (01:10 UTC)
Expired
Apr 16, 1990, 9:15 PM CDT
In force
65 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Pittsburg 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, 1.2 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 1990-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2818 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 1990-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
2818 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
1378 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
60 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 170111
SVRTUL
OKC121-170215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
810 PM CDT MON APR 16 1990
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  915 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES ...
 
IN SOUTHEAST OKLAHOMA
 
   ...PITTSBURG COUNTY
 
AT 8 10PM CDT RADAR INDICATED A CLUSTER OF SEVERE THUNDERSTORMS AROUND
CROWDER MOVING TO THE EAST AT 20 MPH.
 
 
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONuS.

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.

In the hours before

Local storm report, Apr 16, 4:58 PM CDT, 3 hours 12 minutes before
STORM REPORT DELAYED
NATIONAL WEATHER SERVICE TULSA, OK
457 PM CDT MON APR 16 1990

DELAYED STORM REPORT FROM APRIL 15...

 TIME/CDT COUNTY      EVENT
 725 PM   LATIMER     DIME SIZE HAIL FELL 7 MILES NORTH OF WILBURTON
                      ON HIGHWAY 2.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 7:03 PM CDTSevere Thunderstorm WarningTSAMayes, Rogers42 min
Apr 16, 7:22 PM CDTSevere Thunderstorm WarningTSACreek, Okfuskee53 min
Apr 16, 7:37 PM CDTSevere Thunderstorm WarningTSATulsa68 min
Apr 16, 7:45 PM CDTSevere Thunderstorm WarningTSANowata, Washington60 min
Apr 16, 7:45 PM CDTSevere Thunderstorm WarningTSAOsage60 min
Apr 16, 7:58 PM CDTSevere Thunderstorm WarningTSALeFlore62 min
Apr 16, 7:59 PM CDTSevere Thunderstorm WarningTSAMayes61 min
Apr 16, 8:39 PM CDTSevere Thunderstorm WarningTSACreek, Tulsa66 min
Apr 16, 8:50 PM CDTSevere Thunderstorm WarningTSAAdair, Cherokee55 min
Apr 16, 9:00 PM CDTSevere Thunderstorm WarningTSASequoyah60 min
Apr 16, 9:36 PM CDTSevere Thunderstorm WarningTSAWagoner69 min
Apr 16, 9:43 PM CDTSevere Thunderstorm WarningTSACreek, Okmulgee, Tulsa62 min
Apr 16, 9:48 PM CDTSevere Thunderstorm WarningTSAPawnee57 min
Apr 16, 10:02 PM CDTSevere Thunderstorm WarningTSAOsage, Tulsa, Washington58 min
Apr 16, 10:17 PM CDTSevere Thunderstorm WarningTSACherokee58 min
Apr 16, 10:21 PM CDTFlash Flood WarningTSACreek3 hr
Apr 16, 10:43 PM CDTSevere Thunderstorm WarningTSAOkmulgee62 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.