Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 389, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Sep 7, 2001, 10:59 PM CDT for Pittsburg County, Oklahoma. It was in force for 46 min. 1 report 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
- Sep 7, 2001, 10:59 PM CDT (03:59 UTC)
- Expired
- Sep 7, 2001, 11:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Pittsburg County, OK
The radar
The Western Arkansas radar (KSRX), 130 km from the middle of the area, began a volume at 04:12 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 |
|---|---|---|---|
| Sep 7, 11:15 PM CDT | Thunderstorm Wind 61 E | Kiowa, OK | Thunderstorm winds estimated at 70 miles an hour blew a trailer house over. |
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 |
|---|---|---|---|
| Sep 7, 7:00 PM CDT | Tornado Watch | SPC | 5 hr |
| Sep 7, 10:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 4.0 hours before the alert went out and 152 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
- 3154 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1262 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 17.3
The text
As transmitted, in the capitals the NWS used until 2016.
600
WUUS54 KTSA 080359
SVRTUL
OKC121-080445-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1059 PM CDT FRI SEP 7 2001
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA
* UNTIL 1145 PM CDT
* AT 1059 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG
A LINE EXTENDING FROM INDIANOLA TO 7 MILES NORTHWEST OF MCALESTER
TO 11 MILES SOUTHWEST OF KIOWA...MOVING EAST AT 30 MPH.
* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...CANADIAN...
INDIANOLA...CROWDER...BLOCKER...KREBS...ALDERSON...HAYWOOD...
HARTSHORNE...SAVANNA...BLANCO...KIOWA AND MCALESTER.
HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE
EXPECTED IN THE WARNED AREA.
BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
LAT...LON 3523 9588 3496 9599 3462 9612 3463 9553
3509 9542 3528 9545What 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 Sep 7, 7:07 PM CDT, 3 hours 52 minutes earlier.
Area forecast discussion, Sep 7, 7:07 PM CDT, 3 hours 52 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 707 PM CDT FRI SEP 7 2001 WILL UPDATE FOR NEW TORNADO WATCH NUMBER 720 IN EFFECT UNTIL MIDNIGHT. MESONET WINDS AND 3 HOURLY PRESSURE FALLS SUGGEST THAT TORNADO THREAT SHUD REMAIN N OF I-40. PRIMARY SEVERE WEATHER THREAT...HOWEVER...WILL BE LARGE HAIL AND DAMAGING WINDS. ALSO PUSHED OFF POPS FOR FAR SE OK AND NW AR UNTIL AFTER MIDNIGHT. UPDATE OUT AROUND 715 PM. FCSTID = 18 .TSA... AR...NONE. OK...TORNADO WATCH UNTIL MIDNIGHT CDT SATURDAY FOR ZONES OKZ054>068...OKZ070>071...OKZ073.
In the hours before
Special weather statement, Sep 7, 8:57 PM CDT, 2 hours 2 minutes before
OKZ054-055-059-080230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 857 PM CDT FRI SEP 7 2001 TORNADO WATCH NUMBER 720 HAS BEEN CANCELLED FOR PAWNEE...OSAGE AND WASHINGTON COUNTIES IN NORTHEAST OKLAHOMA. THUNDERSTORMS WERE MOVING OUT OF THESE COUNTIES AND THREAT OF SEVERE WEATHER IS OVER.
Local storm report, Sep 7, 9:12 PM CDT, 1 hour 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
912 PM CDT FRI SEP 07 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0810 PM SHAMROCK OK 70 MPH TSTM GUST
09/07/01 CREEK SPOTTER REPORT.
0810 PM SHAMROCK OK .75 INCH HAIL
09/07/01 CREEK SPOTTER REPORT.Special weather statement, Sep 7, 9:13 PM CDT, 1 hour 46 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-081200- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 913 PM CDT FRI SEP 7 2001 ...UPDATE FOR TORNADO WATCH NUMBER 720... .DISCUSSION... AT 9PM THE LOW-LEVEL INSTABILITY AXIS EXTENDED FROM NEAR JOPLIN TO MCALESTER. THE LINE OF THUNDERSTORMS WILL CONTINUE SEVERE AS IT CROSSES THIS AXIS...BUT SHOULD BEGIN TO WEAKEN AS IT MOVES PAST THE THE GREATEST INSTABILITY AND AS THE ASSOCIATED UPPER-LEVEL SYSTEM WEAKENS AND ACCELERATES NORTHEAST AWAY FROM THE REGION. THE THREAT FOR SEVERE WEATHER IN WESTERN ARKANSAS AND FAR SOUTHEAST OKLAHOMA WILL BE LIMITED IF THE STORMS WEAKEN AS EXPECTED. SEE SHORT TERM FORECASTS FOR THE LATEST PROJECTIONS ON THIS LINE OF SEVERE STORMS.
Local storm report, Sep 7, 9:37 PM CDT, 1 hour 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
937 PM CDT FRI SEP 07 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0935 PM MAZIE OK 65 MPH TSTM GUST
09/07/01 MAYES SPOTTER REPORT.Special weather statement, Sep 7, 10:06 PM CDT, 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1006 PM CDT FRI SEP 7 2001 OKZ057-058-062-063-065>068-070-071-073-080400- CHEROKEE-CRAIG-DELAWARE-MAYES-MCINTOSH-MUSKOGEE-OKFUSKEE-OKMULGEE- OTTAWA-PITTSBURG-WAGONER- 1006 PM CDT FRI SEP 7 2001 TORNADO WATCH NUMBER 720 REMAINS IN EFFECT UNTIL MIDNIGHT FOR THE FOLLOWING OKLAHOMA COUNTIES... CHEROKEE...CRAIG...DELAWARE...MAYES...MCINTOSH...MUSKOGEE... OKFUSKEE...OKMULGEE...OTTAWA...PITTSBURG AND WAGONER COUNTIES. THE LINE OF THUNDERSTORMS WILL CONTINUE SEVERE FOR THE NEXT COUPLE OF HOURS AS IT MOVES ACROSS PARTS OF EASTERN OKLAHOMA. OKZ056-060-061-064-080400- CREEK-NOWATA-ROGERS-TULSA- 1006 PM CDT FRI SEP 7 2001 TORNADO WATCH NUMBER 720 HAS BEEN CANCELED IN CREEK...NOWATA... ROGERS AND TULSA COUNTIES. THE LINE OF SEVERE STORMS HAS MOVED OUT OF THESE COUNTIES AND THE THREAT FOR SEVERE WEATHER HAS ENDED.
Special weather statement, Sep 7, 10:13 PM CDT, 46 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-080515- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 1013 PM CDT FRI SEP 7 2001 ...UPDATE FOR TORNADO WATCH NUMBER 720... TORNADO WATCH NUMBER 720 FOR PARTS OF EASTERN OKLAHOMA WILL BE REPLACED BY A SEVERE THUNDERSTORM WATCH THAT WILL COVER PARTS OF EASTERN OKLAHOMA AND MUCH NORTHWEST ARKANSAS. .DISCUSSION... THE LINE OF THUNDERSTORMS MOVING ACROSS EASTERN OKLAHOMA WILL CONTINUE SEVERE THROUGH MIDNIGHT WITH SOME WEAKENING LIKELY THEREAFTER. HOWEVER THE POTENTIAL FOR STRONG WINDS MAY CONTINUE INTO THE OVERNIGHT HOURS AND A SEVERE THUNDERSTORM WATCH WILL BE ISSUED SOON FOR MUCH OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 7:27 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 63 min |
| Sep 7, 7:38 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 52 min |
| Sep 7, 7:38 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 52 min |
| Sep 7, 7:59 PM CDT | Severe Thunderstorm Warning | TSA | Nowata | 61 min |
| Sep 7, 8:03 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 57 min |
| Sep 7, 8:03 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 57 min |
| Sep 7, 8:10 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 50 min |
| Sep 7, 8:22 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 38 min |
| Sep 7, 8:39 PM CDT | Severe Thunderstorm Warning | TSA | Okmulgee, Wagoner | 51 min |
| Sep 7, 8:55 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa | 35 min |
| Sep 7, 8:57 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Mayes, Rogers | 63 min |
| Sep 7, 8:57 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 63 min |
| Sep 7, 8:57 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 33 min |
| Sep 7, 9:13 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee | 62 min |
| Sep 7, 9:13 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 62 min |
| Sep 7, 9:39 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 66 min |
| Sep 7, 9:40 PM CDT | Severe Thunderstorm Warning | TSA | Delaware | 65 min |
| Sep 7, 9:41 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 64 min |
| Sep 7, 10:11 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee, Okmulgee | 64 min |
| Sep 7, 10:14 PM CDT | Severe Thunderstorm Warning | TSA | Adair | 61 min |
| Sep 7, 10:30 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 60 min |
| Sep 7, 10:39 PM CDT | Severe Thunderstorm Warning | TSA | Haskell | 66 min |
| Sep 7, 10:54 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Sequoyah, Wagoner | 66 min |
| Sep 7, 11:13 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 47 min |
| Sep 7, 11:24 PM CDT | Severe Thunderstorm Warning | TSA | Adair | 51 min |
| Sep 7, 11:31 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pushmataha | 59 min |
| Sep 7, 11:42 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, LeFlore, Sequoyah | 63 min |
| Sep 8, 12:19 AM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 56 min |
| Sep 8, 1:15 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 60 min |
| Sep 8, 3:41 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer | 64 min |
| Sep 8, 3:50 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 55 min |
| Sep 8, 4:45 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 60 min |
| Sep 8, 5:18 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 57 min |
| Sep 8, 5:30 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 60 min |
| Sep 8, 6:09 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 66 min |
| Sep 8, 6:14 PM CDT | Flash Flood Warning | TSA | Latimer | 3 hr |
| Sep 8, 6:30 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 60 min |
| Sep 8, 6:43 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 62 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.