Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 167, NWS Tulsa, OK

May 26, 1990Creek County, Okmulgee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 26, 1990, 10:31 PM CDT for Creek County, Okmulgee County, Oklahoma. It was in force for 44 min. 2 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 26, 1990, 10:31 PM CDT (03:31 UTC)
Expired: May 26, 1990, 11:15 PM CDT
In force: 44 min
Issued by: NWS Tulsa, OK
Area: Whole counties

Counties Creek County, OK, Okmulgee 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

Time	Report	Where	Remark
May 26, 10:45 PM CDT	Hail 0.75	Creek, OK
May 26, 11:00 PM CDT	Hail 0.75	Okmulgee, 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, 3.5 hours before the alert went out and 128 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 270331
SVRTUL
OKC037-111-270415-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1031 PM CDT SAT MAY 26 1990
 
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES ...
 
IN NORTHEAST OKLAHOMA
 
   ...SOUTHERN CREEK COUNTY...OKMULGEE COUNTY
 
AT 1029 RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHEAST OF
BRISTOW, OK MOVING 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 BUSINESS.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 10:15 PM CDT	Severe Thunderstorm Warning	TSA	Osage	45 min
May 27, 12:13 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	47 min
May 27, 12:28 AM CDT	Severe Thunderstorm Warning	TSA	Haskell	47 min
May 27, 12:56 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	64 min
May 27, 3:43 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	62 min
May 27, 4:08 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okmulgee	67 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1990 Every 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.