Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 435, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Nov 23, 2001, 7:38 PM CST for Creek County, Okmulgee County, Tulsa County, Oklahoma. It was in force for 52 min. 8 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
- Nov 23, 2001, 7:38 PM CST (01:38 UTC)
- Expired
- Nov 23, 2001, 8:30 PM CST
- In force
- 52 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Creek County, OK, Okmulgee County, OK, Tulsa County, OK
The radar
The Tulsa radar (KINX), 58 km from the middle of the area, began a volume at 01:41 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 |
|---|---|---|---|
| Nov 23, 7:50 PM CST | Hail 1 | Glenpool, OK | |
| Nov 23, 7:50 PM CST | Thunderstorm Wind 52 E | Glenpool, OK | |
| Nov 23, 7:52 PM CST | Hail 0.75 | Kiefer, OK | |
| Nov 23, 7:55 PM CST | Thunderstorm Wind 57 E | Slick, OK | |
| Nov 23, 7:59 PM CST | Hail 1 | Jenks, OK | |
| Nov 23, 8:02 PM CST | Hail 1 | Tulsa, OK | The following is a list of hail reports within the city of Tulsa beginning at 802 pm and 803 pm:At 802 pm quarter size hail was reported at 51st and Sheridan. At 802 pm dime size hail was reported at the intersection of Highway 75 and Interstate 44.At 803 pm |
| Nov 23, 8:05 PM CST | Hail 1 | Tulsa, OK | The following is a list of hail reports from the city of Tulsa from 805 pm to 809 pm:At 805 pm dime size hail was reported at the intersection of Yale Avenue and Interstate 44.At 805 pm quarter size hail was reported at 96th and Riverside.At 806 pm nickel size |
| Nov 23, 8:12 PM CST | Hail 1 | Tulsa, OK | Quarter size hail was reported at Eastland Mall. |
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 |
|---|---|---|---|
| Nov 23, 6:00 PM CST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 1.6 hours before the alert went out and 139 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
- 39 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 1754 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
386 WUUS54 KTSA 240138 SVRTUL OKC037-111-143-240230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 738 PM CST FRI NOV 23 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN CREEK COUNTY IN NORTHEAST OKLAHOMA NORTHWESTERN OKMULGEE COUNTY IN NORTHEAST OKLAHOMA SOUTHERN TULSA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 830 PM CST * AT 738 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES SOUTHWEST OF MOUNDS...MOVING NORTHEAST AT 40 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...TULSA...SAND SPRINGS...JENKS...GLENPOOL...MOUNDS...KIEFER...KELLYVILLE AND SAPULPA. HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. LAT...LON 3580 9632 3572 9613 3617 9577 3617 9614
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 Nov 23, 12:00 PM CST, 7 hours 38 minutes earlier.
Area forecast discussion, Nov 23, 12:00 PM CST, 7 hours 38 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1200 PM CST FRI NOV 23 2001 A BUSY AFTN/EVE BEGINNING TAKING SHAPE...SO WL ISSUE AFD EARLY. EXPECT SCT TSRA TO DEVELOP LATE THIS AFTERNOON ALONG AND EAST OF THE HWY 75 CORRIDOR. GIVEN THE MAGNITUDE OF SHEAR AND INSTABILITY AVAIL...SUPERCELLS ARE A LIKELYHOOD...AND HAVE CONTINUED SVR WORDING IN THE ZNS. GOOD THERMODYNAMICS AND EXCELLENT KINEMATICS SUGGEST THE POTENTIAL FOR LARGE TORNADOES LATE THIS AFTERNOON AND THIS EVENING. BROKEN LINE OF STORMS SHOULD PUSH EAST OF MUCH OF THE CWFA BY MIDNIGHT OR SHORTLY THEREAFTER. WL CARRY LOWEST POPS IN IN THE WEST...WITH HIGHEST POPS IN WC/NW AR. WL LET WIND ADVISORY GO WITH THE AFTERNOON PACKAGE. AFTER TONIGHT...TOMORROW PROMISES TO BE A STELLAR DAY ACROSS MUCH OF THE CWFA...WITH THE EXCEPTION OF NRN ZNS...WHERE WRAP AROUND CAA CLOUDINESS WL KEEP THINGS RATHER CLOUDY FOR MOST OF THE DAY. AVN/ECMWF/ETA ARE ALL IN EXCELLENT AGREEMENT. WINDS WL QUICKLY RETURN TO THE S...ALLOWING SOME LIMITED MOISTURE TO ONCE AGAIN RETURN. ANOTHER STRONG SHORTWAVE PUSHES OUT INTO THE PLAINS ON MONDAY. ATTM...LOOKS LIKE THE THREAT IS FAIRLY LOW AS MUCH OF THE FORCING WL BE TO THE N OF THE CWFA...AND WL LEAVE THE POPS OUT FOR NOW. MEDIUM RANGE MODELS HAVE FINALLY COME INTO GOOD AGREEMENT THROUGH THE REMAINDER OF THE FCST. STRONG CDFNT PUSHES THROUGH THE CWFA ON MONDAY...BRINGING ANOTHER AIRMASS CHANGE. DON/T FEEL THAT THIS ONE WL BE PARTICULARLY COLD AT THE ONSET AS IT IS PAC IN NATURE. A SMALL PIECE OF POLAR AIR TRIES TO BREAK OFF AND ROCKET DOWN THE PLAINS ON WED/THU COOLING TEMPS OFF BUT BRINGING LITTLE IN THE WAY OF ANY PCPN. THU/FRI SHOULD BE FAIRLY COOL WITH THE POLAR AIR IN PLACE. WL KEEP LOW POPS ON WEDNESDAY NIGHT...AS THERE ARE HINTS OF LGT OVERRUNNING PCPN MAINLY ACROSS SRN AND ERN ZNS. OTRW...QUIET WX FOR THE REMAINDER OF THE XTND. FORECAST PACKAGE WL BE RELEASED AROUND 400 PM. MANNING FCSTID = 24 ...PRELIMINARY NUMBERS... TUL 50 62 38 62 / 40 0 0 0 FSM 54 64 38 65 / 70 10 0 0 MLC 53 64 39 66 / 50 10 0 0 BVO 47 58 36 61 / 40 0 0 0 FYV 49 60 36 60 / 70 10 0 0 BYV 50 59 35 59 / 70 10 0 0 MIO 48 59 36 60 / 60 10 0 0 MKO 52 63 38 64 / 50 10 0 0 F10 52 63 38 64 / 40 10 0 0 HHW 53 65 39 67 / 50 10 0 0 .TSA... AR...WIND ADVISORY THIS AFTERNOON FOR ZONES ARZ001>002...ARZ010>011...ARZ019>020...ARZ029. OK...WIND ADVISORY THIS AFTERNOON FOR ZONES OKZ049...OKZ053>064...OKZ066>076.
In the hours before
Special weather statement, Nov 23, 5:35 PM CST, 2 hours 3 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-241200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 535 PM CST FRI NOV 23 2001 ...UPDATE... AN OUTBREAK OF SEVERE THUNDERSTORMS IS STILL EXPECTED ACROSS FAR EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS EVENING AND TONIGHT. A POWERFUL STORM SYSTEM WAS MOVING SLOWLY ACROSS THE CENTRAL PLAINS. THIS SYSTEM SLOWED ITS PROGRESS TODAY AS IT CONTINUED TO STRENGTHEN. HOWEVER IT WILL ACCELERATE EAST TONIGHT AS STRONG JET STREAM WINDS PUNCH INTO THE CENTRAL U.S. SCATTERED THUNDERSTORMS WILL DEVELOP IN EASTERN OKLAHOMA AND EXTREME WESTERN ARKANSAS BETWEEN 6PM AND 8PM AND QUICKLY BECOME SEVERE. THE STORMS WILL FORM A LINE AND RACE ACROSS NORTHWEST ARKANSAS...WITH THE THREAT DIMINISHING AFTER 2AM AS THE LINE EXITS THE AREA. VERY STRONG WIND FIELDS AND INCREASING INSTABILITY WILL PROMOTE STORM ROTATION AND SUPERCELLS. THERE WILL BE A THREAT FOR TORNADOES AND VERY LARGE HAIL FOR THE FIRST SEVERAL HOURS OF THE EVENT...WITH THE THREAT TRANSITIONING TO DAMAGING WINDS AS THE STORMS FORM INTO A LINE. GIVEN THE FAST WINDS ALOFT THERE IS THE POTENTIAL FOR STRUCTURAL DAMAGE IN THE MOST SEVERE STORMS. PERSONS IN EASTERN OKLAHOMA AND NORTHWEST ARKANSAS SHOULD PAY CLOSE ATTENTION TO THE WEATHER TONIGHT AND BE READY TO ACT. STAY TUNED TO THIS STATION FOR FURTHER INFORMATION FROM THE NATIONAL WEATHER SERVICE.
Local storm report, Nov 23, 6:52 PM CST, 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
652 PM CST FRI NOV 23 2001
TIME(CST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0629 PM MANSFIELD AR 0.75 INCH HAIL
11/23/01 SEBASTIAN SPOTTER RPTThe office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 23, 6:58 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 47 min |
| Nov 23, 7:20 PM CST | Tornado Warning | TSA | Delaware | 40 min |
| Nov 23, 8:04 PM CST | Severe Thunderstorm Warning | TSA | Rogers, Tulsa | 41 min |
| Nov 23, 8:23 PM CST | Severe Thunderstorm Warning | TSA | Choctaw, Latimer, Pushmataha | 52 min |
| Nov 23, 8:23 PM CST | Severe Thunderstorm Warning | TSA | Haskell | 52 min |
| Nov 23, 8:39 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 51 min |
| Nov 23, 9:07 PM CST | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 53 min |
| Nov 23, 9:15 PM CST | Severe Thunderstorm Warning | TSA | Adair | 45 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.