Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 32, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Feb 24, 2001, 12:30 PM CST for Adair County, Cherokee County, Sequoyah County, Oklahoma. It was in force for 60 min. 2 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Feb 24, 2001, 12:30 PM CST (18:30 UTC)
- Expired
- Feb 24, 2001, 1:30 PM CST
- In force
- 60 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Adair County, OK, Cherokee County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 62 km from the middle of the area, began a volume at 18:31 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 24, 12:30 PM CST | Thunderstorm Wind | Vian, OK | Thunderstorm winds blew down power lines and signs. |
| Feb 24, 12:35 PM CST | Thunderstorm Wind | Cookson, OK | Thunderstorm winds blew down trees. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 24, 11:15 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 6.5 hours before the alert went out and 177 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
- 429 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 326 m²/s²
- 0-3 km storm-relative helicity
- 371 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
475 WUUS54 KTSA 241831 RRA SVRTUL OKC001-021-135-241930- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1230 PM CST SAT FEB 24 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA ADAIR COUNTY IN NORTHEAST OKLAHOMA * UNTIL 130 PM CST * AT 1230 PM CST SEVERE THUNDERSTORMS CAPABLE OF PRODUCING WINDS UP TO 70 MPH WERE LOCATED 3 MILES WEST OF VIAN...MOVING NORTHEAST AT 50 MPH. * SOME LOCATIONS AFFECTED INCLUDE... COOKSON...MARBLE CITY... BRUSHY...GORE...VIAN...BUNCH AND STILWELL. A TORNADO WATCH IS ALSO IN EFFECT UNTIL 5 PM. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. LAT...LON 3549 9519 3536 9505 3566 9449 3596 9475
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 24, 12:30 PM CST, 0 minutes earlier.
Area forecast discussion, Feb 24, 12:30 PM CST, 0 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1230 PM CST SAT FEB 24 2001 LINE OF STORMS IS PROGRESSING EAST WITH ONLY SCATTERED SHOWERS BEHIND IT FOR THE MOST PART. WILL UPDATE ZONES TO REMOVE COUNTIES FROM FLASH FLOOD AND TOR WATCH. /13 .TUL... .AR...FLASH FLOOD WATCH...WIND ADVISORY TODAY FOR ZONES 1-2-10-11-19-20-29. .OK...FLASH FLOOD WATCH...WIND ADVISORY TODAY FOR ZONES 49-53-58-063-068>70-72-73>76.
In the hours before
Local storm report, Feb 24, 12:03 PM CST, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1203 PM CST SAT FEB 24 2001
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1127 AM STIDHAM OK .75 INCH HAIL
02/24/01 MCINTOSH [EUFAULA EOC]
1135 AM MUSKOGEE OK WIND DAMAGE
02/24/01 MUSKOGEE [CITY OF MUSKOGEE EOC]
1140 6AM MUSKOGEE OK .75 INCH HAIL
02/24/01 MUSKOGEE [CITY OF MUSKOGEE EOC]Local storm report, Feb 24, 12:05 PM CST, 25 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE TULSA OK
1205 PM CST SAT FEB 24 2001
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1135 AM MUSKOGEE OK WIND DAMAGE
02/24/01 MUSKOGEE POWER LINES DOWN ON THE
WEST SIDE OF MUSKOGEE
CITY OF MUSKOGEE EOCLocal storm report, Feb 24, 12:15 PM CST, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1215 PM CST SAT FEB 24 2001
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1140 AM 1 W CHECOTAH OK WIND DAMAGE
02/24/01 MCINTOSH POWER LINES AND TREES
DOWN 1 MILE WEST OF
INTERSECTION OF
INTERSTATE 40 AND
HIGHWAY 69 [AMATEUR
RADIO]Special weather statement, Feb 24, 12:20 PM CST, 10 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-251200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 1220 PM CST SAT FEB 24 2001 ..TORNADO WATCH IN EFFECT FOR MOST OF EASTERN OKLAHOMA AND ALL OF NORTHWEST ARKANSAS UNTIL 5 PM... A STRONG UPPER LEVEL STORM SYSTEM WAS LOCATED OVER COLORADO THIS AFTERNOON. SURFACE LOW PRESSURE SYSTEM WAS LOCATED IN SOUTHWEST KANSAS WITH A DRYLINE EXTENDING SOUTH TROUGH EASTERN OKLAHOMA AND INTO EASTERN TEXAS. SEVERE STORMS...CAPABLE OF PRODUCING A FEW TORNADOES...ARE EXPECTED THIS AFTERNOON JUST AHEAD OF THE DRYLINE AS IT SWEEPS ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON. .SPOTTER ACTIVATION... SPOTTERS SHOULD HAVE BEEN ACTIVATED FOR THIS AFTERNOON ACROSS MOST OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. .DISCUSSION...STRONG TO SEVERE STORMS HAVE BEEN ONGOING OVER PARTS OF EASTERN OKLAHOMA EARLY THIS AFTERNOON. AS THE UPPER SYSTEM MOVES OUT INTO THE PLAINS THE SURFACE LOW PRESSURE SYSTEM WILL MOVE EASTWARD ACROSS KANSAS...SWEEPING THE DRYLINE ACROSS THE REMAINDER OF EASTERN OKLAHOMA AND ALL OF NORTHWEST ARKANSAS THIS AFTERNOON. THE THREAT FOR STRONG DAMAGING WINDS...LARGE HAIL AND THE POTENTIAL FOR TORNADOES WILL CONTINUE EAST OF MIAMI TO HUGO LINE THIS AFTERNOON. I THREAT TABLE VALID THROUGH 1200 UTC SUNDAY THREAT AREA...FAR EASTERN OKLAHOMA AND ALL OF NORTHWEST ARKANSAS THUNDERSTORM PROBABILITY...100 SEVERE WEATHER PROBABILITY IF STORMS OCCUR...100 SIGNIFICANT SEVERE WEATHER PROBABILITY IF STORMS OCCUR...60 THREAT AREAS DEFINE THE GREATEST RISK. PROBABILITIES ARE IN PERCENT. SIGNIFICANT SEVERE IS DEFINED AS F1 OR GREATER WIND/ TORNADO DAMAGE AND/OR GOLF BALL SIZE HAIL OR LARGER. .OTHER HAZARDS... A FLASH FLOOD WATCH /OKCFFATUL/ REMAINS IN EFFECT FOR FOR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AS HEAVY RAINS TODAY WILL COMBINE WITH RAINFALL OVER THE PAST 24 HOURS WIND GUSTS OF 25 TO 35 MPH CAN BE EXPECTED THIS AFTERNOON. AS A RESULT...A WIND ADVISORY REMAINS IN EFFECT FOR THIS AFTERNOON. WINDS WILL SUBSIDE OVERNIGHT AS THE SURFACE LOW PRESSURE CENTER LIFTS NORTHEAST FROM THE AREA. SEE /OKCNPWTUL/ FOR FURTHER DETAILS. RELATED GRAPHICAL INFORMATION CAN BE FOUND AT... WWW.SRH.NOAA.GOV/TULSA
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 24, 10:02 AM CST | Severe Thunderstorm Warning | TSA | Creek, Osage, Tulsa, Washington | 58 min |
| Feb 24, 10:51 AM CST | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 39 min |
| Feb 24, 10:51 AM CST | Severe Thunderstorm Warning | TSA | Muskogee | 39 min |
| Feb 24, 10:55 AM CST | Severe Thunderstorm Warning | TSA | Rogers, Tulsa | 50 min |
| Feb 24, 11:16 AM CST | Severe Thunderstorm Warning | TSA | McIntosh, Okmulgee | 44 min |
| Feb 24, 11:17 AM CST | Severe Thunderstorm Warning | TSA | Cherokee, Wagoner | 58 min |
| Feb 24, 11:35 AM CST | Severe Thunderstorm Warning | TSA | Delaware, Mayes | 55 min |
| Feb 24, 11:35 AM CST | Severe Thunderstorm Warning | TSA | Muskogee | 40 min |
| Feb 24, 12:29 PM CST | Severe Thunderstorm Warning | TSA | Pushmataha | 31 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2001Every severe thunderstorm warning in 2001
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; radar from the NEXRAD Level II archive.