Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 75, NWS Tulsa, OK

May 15, 1990Creek County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 15, 1990, 8:37 PM CDT for Creek County, Oklahoma. It was in force for 53 min. 3 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
May 15, 1990, 8:37 PM CDT (01:37 UTC)
Expired
May 15, 1990, 9:30 PM CDT
In force
53 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Creek County, OK

The radar

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

What was reported inside it

TimeReportWhereRemark
May 15, 8:55 PM CDTThunderstorm Wind 56Creek, OK
May 15, 9:13 PM CDTHail 1.75Creek, OK
May 15, 9:40 PM CDTHail 2.75Creek, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.6 hours before the alert went out and 120 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 1990-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2163 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 1990-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 158 square meters per square second.1939587897117Sfc1 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
2163 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1065 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
158 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
1.9
Supercell composite
8.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 160138
SVRTUL
OKC037-160230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
837 PM CDT TUE MAY 15 1990
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  930 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES ...
 
IN NORTHEAST OKLAHOMA
 
   ...NORTHERN CREEK COUNTY
 
AT 8 37 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM NEAR OILTON
MOVING EAST AT 25 MPH. OILTON AND SILVER CITY ARE IN THE PATH OF THIS
STORM.
 
 
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"
RAP
IDLY CHANGING WEATHER CONDITIONS.

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, 8:48 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, 5:45 PM CDTSevere Thunderstorm WarningTSALeFlore, Sequoyah60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.