Alert archive / Oklahoma / Tornado Warnings in 1990
Tornado Warning 31, NWS Norman, OK
NWS Norman, OK issued this tornado warning at May 26, 1990, 7:53 PM CDT for Canadian County, Oklahoma. It was in force for 52 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 26, 1990, 7:53 PM CDT (00:53 UTC)
- Expired
- May 26, 1990, 8:45 PM CDT
- In force
- 52 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties
County Canadian 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, 8:21 PM CDT | Thunderstorm Wind 65 | Canadian, OK | |
| May 26, 8:40 PM CDT | Thunderstorm Wind 56 | Canadian, OK | |
| May 26, 8:46 PM CDT | Hail 0.75 | Canadian, 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, 0.9 hours before the alert went out and 64 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOKC 270055 TOROKC OKC017-270145- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 753 PM CDT SAT MAY 26 1990 THE NATIONAL WEATHER SERVICE IN OKLAHOMA CITY HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 845 PM CDT FOR THE FOLLOWING OKLAHOMA LOCATIONS... IN CENTRAL OKLAHOMA ...CANADIAN COUNTY AT 753 PM RADAR INDICATED A DEVELOPING TORNADO 3 MILES NORTHWEST OF CONCHO MOVING EAST-SOUTHEAST AND 10 MILES AN HOUR. IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS... OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
What forecasters said that day
The local office's own words before this tornado 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, 2:57 PM CDT, 4 hours 56 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, 2 hours 34 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.
Special weather statement, May 26, 5:41 PM CDT, 2 hours 12 minutes before
TXZ020-019-262345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WICHITA FALLS TX 540 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 535PM CDT...A FEW THUNDERSTORMS WERE LOCATED OVER NORTH TEXAS IN EASTERN DENTON COUNTY AND EXTENDED TO THE SOUTHWEST TO NEAR STEPHENVILLE. THE THUNDERSTORMSF WERE MOVING TO THE EAST AT ABOUT 25 MILES AN HOUR. HAIL TO THREE QUARTERS OF AN INCH WAS REPORTED EARLIER AT STEPHENVILLE.
Local storm report, May 26, 6:07 PM CDT, 1 hour 46 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
606 PM CDT SAT MAY 26 1990
TIME(CDT) COUNTY EVENT
540 PM MAJOR NICKEL SIZE HAIL 5 MILES NORTHEAST
OF AMES.
555 PM GARFIELD DIME SIZE HAIL AT DRUMMONDSpecial weather statement, May 26, 7:46 PM CDT, 7 minutes before
OKZ013-018-019-020-023-024-025-026-270300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 745 PM CDT SAT MAY 26 1990 TORNADO WATCH NUMBER 324... ISSUED EARLIER THIS AFTERNOON FOR PARTS OF SOUTH CENTRAL AND SOUTHEASTERN OKLAHOMA... IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES... IN NORTHEAST OKLAHOMA... SEQUOYAH. IN SOUTHEAST OKLAHOMA... ATOKA... CHOCTAW... COAL... HASKELL... HUGHES... LATIMER... LEFLORE... MCCURTAIN... PITTSBURG... PUSHMATAHA. TORNADO WATCH NUMBER 324 REMAINS IN EFFECT UNTIL 10 PM CDT FOR LOVE... MARSHALL... AND BRYAN COUNTIES IN SOUTH CENTRAL OKLAHOMA.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 7:10 PM CDT | Tornado Warning | OUN | Kingfisher | 50 min |
| May 26, 7:34 PM CDT | Severe Thunderstorm Warning | OUN | Canadian | 41 min |
| May 26, 8:00 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 45 min |
| May 26, 8:22 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 53 min |
| May 26, 8:45 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Grady | 60 min |
| May 26, 8:52 PM CDT | Tornado Warning | OUN | Caddo | 53 min |
| May 26, 9:06 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, McClain | 69 min |
| May 26, 9:06 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 69 min |
| May 26, 9:18 PM CDT | Severe Thunderstorm Warning | OUN | Noble | 42 min |
| May 26, 9:39 PM CDT | Tornado Warning | OUN | Caddo | 36 min |
| May 26, 9:43 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Grady | 32 min |
| May 26, 10:13 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Grady, McClain, Pottawatomie | 47 min |
| May 26, 10:13 PM CDT | Severe Thunderstorm Warning | OUN | Stephens | 47 min |
| May 26, 10:59 PM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 61 min |
| May 26, 10:59 PM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Garvin, Grady, McClain | 61 min |
| May 26, 10:59 PM CDT | Severe Thunderstorm Warning | OUN | Stephens | 61 min |
| May 26, 11:01 PM CDT | Tornado Warning | OUN | Grady, Stephens | 29 min |
| May 26, 11:26 PM CDT | Severe Thunderstorm Warning | OUN | Hughes, Pontotoc | 49 min |
| May 26, 11:37 PM CDT | Tornado Warning | OUN | Stephens | 23 min |
| May 26, 11:57 PM CDT | Severe Thunderstorm Warning | OUN | Garvin | 63 min |
| May 27, 12:13 AM CDT | Severe Thunderstorm Warning | OUN | Coal, Murray, Pontotoc | 62 min |
| May 27, 12:38 AM CDT | Severe Thunderstorm Warning | OUN | Johnston | 67 min |
| May 27, 1:10 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal | 65 min |
| May 27, 2:10 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Pushmataha | 50 min |
Nearby
Tornado Warnings in Oklahoma, 1990Every tornado warning in 1990Tornadoes 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.