Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 271, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 26, 1990, 5:35 PM CDT for Garfield County, Major County, Oklahoma. It was in force for 40 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, 5:35 PM CDT (22:35 UTC)
- Expired
- May 26, 1990, 6:15 PM CDT
- In force
- 40 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
Counties Garfield County, OK, Major 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, 5:40 PM CDT | Hail 0.88 | Major, OK | |
| May 26, 5:55 PM CDT | Hail 0.75 | Garfield, 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 12:00Z, 10.6 hours before the alert went out and 143 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.
- Mixed-layer CAPE
- 1863 J/kg
- Mixed-layer CIN
- -391 J/kg
- Mixed-layer LCL
- 1411 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 202 m²/s²
- 0-3 km storm-relative helicity
- 211 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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
Special weather statement, May 26, 11:58 AM CDT, 5 hours 37 minutes before
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</html>Special weather statement, May 26, 12:49 PM CDT, 4 hours 46 minutes before
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</html>Special weather statement, May 26, 1:22 PM CDT, 4 hours 13 minutes before
TXZ020-019-261900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 115 PM CDT SAT MAY 26 1990 ...LINE OF THUNDERSTORMS WELL EAST OF THE LOCAL AREA... JUST AFTER 1PM CDT...THUNDERSTORMS WERE BEGINNING TO FORM A LINE FROM EAST OF ARDMORE OKLAHOMA...CROSSING THE RED RIVER NEAR GAINSVILLE TEXAS ...THEN EXTENDING SOUTHWEST TO NEAR DECATUR AND MINERAL WELLS TEXAS. MOVEMENT WAS EAST NORTHEAST AT 27 MPH. THE STRONGEST THUNDERSTORMS WERE OCCURRING ALONG THE RED RIVER NORTH OF GAINSVILLE TEXAS. IN THE WICHITA FALLS AREA...SURFACE WINDS HAVE NOW SHIFTED INTO A SOUTHWESTERLY DIRECTION INDICATING THE DRY LINE WAS JUST EAST OF THE LOCAL AREA. TEMPERATURES ARE EXPECTED TO APPROACH 100 DEGRESS LATTER THIS AFTERNOON. THE HEAT STRESS TEMPERATURE WAS ALREADY OVER 100 DEGREES. PERSONS ENGAGED IN STRENUOUS OUTDOOR ACTIVITIES SHOULD USE CAUTION LATTER THIS AFTERNOON. BY 115 PM THE TEMPERATURE IN THE SHADE WAS ALREADY 96 DEGREES.
Special weather statement, May 26, 2:57 PM CDT, 2 hours 38 minutes before
TXZ020-019-262100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 300 PM CDT SAT MAY 26 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 10 PM CDT FOR THE FOLLOWING NORTH CENTRAL TEXAS COUNTIES...CLAY...JACK AND MONTAGUE...THIS WATCH INCLUDES COTTON COUNTY OF OKLAHOMA... AT 300PM CDT...A VERY STRONG THUNDERSTORM WAS INDICATED ALONG THE JACK/WISE COUNTY LINE SOUTH OF LAKE BRIDGPORT. MOVEMENT WAS EAST NORTHEAST AT 25 MPH. ELSEWHERE...A SCATTERING OF SHOWERS AND THUNDERSTORMS WERE IN PROGRESS FROM THE DALLAS/FORT WORTH METROPLEX TO EAST OF ABILINE. SOUTH SOUTHWEST SURFACE WIND IS EXPECTED TO KEEP THE LOCAL AREA THUNDERSTORM FREE THIS AFTERNOON/EVENING. HOWEVER...TEMPERATURES WILL SOAR TO 100 PLUS DEGREES WITH MUCH HIGHER HEAT INDEX TEMPERATURES. THE LOCAL AREA IS EXPERIENCING SOME OF THE HOTTEST TEMPERATURES SO FAR THIS YEAR. USE CAUTION THIS AFTERNOON IN ANY OUTDOOR ACTIVITIES. BY 300 PM THE TEMPERATURE IN THE SHADE WAS 99 DEGREES.
Special weather statement, May 26, 5:19 PM CDT, 16 minutes before
OKZ005-010-011-016-262300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 515 PM CDT SAT MAY 26 1990 ...THUNDERSTORMS DEVELOPING IN CENTRAL OKLAHOMA... AT 515 PM RADAR INDICATED THUNDERSTORMS DEVELOPING IN CENTRAL OKLAHOMA FROM NEAR CASHION TO 10 MILES SOUTHWEST OF ENID. ADDITIONAL THUNDERSTORM DEVELOPMENT IS POSSIBLE ACROSS OTHER PARTS OF NORTHCENTRAL AND CENTRAL OKLAHOMA THIS EVENING. STORMS HAVE THE POTENTIAL TO DEVELOP RAPIDLY AND REACH SEVERE LEVELS. RESIDENTS SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND LISTEN FOR POSSIBLE SEVERE WEATHER WATCHES AND WARNINGS FROM THE NATIONAL WEATHER SERVICE.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 6:13 PM CDT | Severe Thunderstorm Warning | OUN | Garfield | 47 min |
| May 26, 6:45 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 45 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.