Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 15, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Feb 26, 1998, 4:36 PM CST for LeFlore County, Oklahoma. It was in force for 54 min. 1 report 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
- Feb 26, 1998, 4:36 PM CST (22:36 UTC)
- Expired
- Feb 26, 1998, 5:30 PM CST
- In force
- 54 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County LeFlore County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 26, 5:03 PM CST | Hail 0.75 | Le Flore, 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.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 10.6 hours before the alert went out and 237 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 931 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
862 WUUS54 KTSA 262237 RRA SVRTUL OKC079-262330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 436 PM CST THU FEB 26 1998 THE NATIONAL WEATHER SERVICE IN TULSA OK HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEASTERN OKLAHOMA ...NORTHERN AND CENTRAL LE FLORE COUNTY AT 434 PM...NWS RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHWEST OF FANSHAWE MOVING EAST-NORTHEAST AT 25 MPH. FANSHAWE IS IN THE PATH OF THIS STORM. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. DURING THE STORM MOVE INDOORS AND STAY AWAY FROM WINDOWS. TO PROTECT YOURSELF FROM LIGHTNING DO NOT USE THE TELEPHONE OR HAND HELD ELECTRICAL APPLIANCES...UNLESS IN AN EMERGENCY. MOTORISTS SHOULD BE ALERT FOR WATER ON ROADWAYS AND NEVER DRIVE ONTO A FLOODED ROAD.
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.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 26, 10:20 AM CST, 6 hours 16 minutes earlier.
Area forecast discussion, Feb 26, 10:20 AM CST, 6 hours 16 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE TULSA OK 1020 AM CST THU FEB 26 1998 MESONET INDICATING FRONT ABOUT HALF WAY THROUGH FA ATTM. LATEST VISIBLE IMAGERY SHOWING BACK EDGE OF CLOUDS JUST TO THE WEST OF AREA. CLEARING HAS BEEN SLOWED BY DEVELOPING SC ON BACK EDGE. SLOWED DOWN THE CLEARING AND LOWERED POPS IN W ARKANSAS AS MAIN PCPN SHOULD STAY TO THE EAST OF FA. TEMPS SEEM ON TRACK FOR NOW . HOWIESON .TUL... OK...NONE. AR...NONE.
In the hours before
Local storm report, Feb 26, 3:35 PM CST, 1 hour 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
335 PM CST THU FEB 26 1998
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0312 PM SALLISAW OK .88 INCH HAIL
02/26/98 SEQUOYAH
0315 PM 2 E SALLISAW OK .88 INCH HAIL
02/26/98 SEQUOYAH NICKEL SIZE HAIL JUST EAST
OF SALLISAW ALONG I-40.
REPORT FROM HAMS RELAYED
THROUGH KHBS.Local storm report, Feb 26, 3:35 PM CST, 1 hour 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
335 PM CST THU FEB 26 1998
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0312 PM SALLISAW OK .88 INCH HAIL
02/26/98 SEQUOYAH
0315 PM 2 E SALLISAW OK .88 INCH HAIL
02/26/98 SEQUOYAH NICKEL SIZE HAIL JUST EAST
OF SALLISAW ALONG I-40.
REPORT FROM HAMS RELAYED
THROUGH KHBS.Local storm report, Feb 26, 4:21 PM CST, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
421 PM CST THU FEB 26 1998
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0408 PM GREENWOOD AR .75 INCH HAIL
02/26/98 SEBASTIAN REPORTED BY HAM OPERATORLocal storm report, Feb 26, 4:24 PM CST, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
424 PM CST THU FEB 26 1998
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0353 PM FT SMITH AR .75 INCH HAIL
02/26/98 SEBASTIAN REPORTED IN TOWN BY POLICE
DEPARTMENTThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 6:59 PM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 46 min |
| Feb 25, 7:28 PM CST | Severe Thunderstorm Warning | TSA | Cherokee, Sequoyah | 62 min |
| Feb 25, 7:40 PM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 50 min |
| Feb 25, 8:36 PM CST | Severe Thunderstorm Warning | TSA | Choctaw | 39 min |
| Feb 25, 9:30 PM CST | Severe Thunderstorm Warning | TSA | Pushmataha | 45 min |
| Feb 25, 10:46 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 74 min |
| Feb 26, 3:15 PM CST | Severe Thunderstorm Warning | TSA | Sequoyah | 45 min |
| Feb 26, 3:46 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 44 min |
| Feb 26, 4:31 PM CST | Severe Thunderstorm Warning | TSA | Latimer | 44 min |
| Feb 26, 5:29 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 61 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1998Every severe thunderstorm warning in 1998
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.