Alert archive / Arkansas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 399, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Sep 8, 2001, 12:36 AM CDT for Franklin County, Arkansas. It was in force for 69 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 8, 2001, 12:36 AM CDT (05:36 UTC)
- Expired
- Sep 8, 2001, 1:45 AM CDT
- In force
- 69 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Franklin County, AR
The radar
The Western Arkansas radar (KSRX), 47 km from the middle of the area, began a volume at 05:45 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 8, 12:55 AM CDT | Thunderstorm Wind 61 E | Countywide, AR | Thunderstorm winds estimated at 70 miles an hour blew down several trees across Franklin county. |
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, 10:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 5.6 hours before the alert went out and 153 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
- 932 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 2014 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
939 WUUS54 KTSA 080536 SVRTUL ARC047-080645- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1236 AM CDT SAT SEP 8 2001 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... FRANKLIN COUNTY IN WEST CENTRAL ARKANSAS * UNTIL 145 AM CDT * AT 1236 AM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 9 MILES SOUTHWEST OF FERN TO 29 MILES SOUTHWEST OF BRANCH...MOVING EAST AT 40 MPH. * SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...WIEDERKEHR VILLAGE...CASS...FERN...ALTUS...DENNING...BRANCH AND OZARK. WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH. LAT...LON 3569 9406 3519 9411 3528 9374 3578 9366
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 Sep 7, 7:07 PM CDT, 5 hours 29 minutes earlier.
Area forecast discussion, Sep 7, 7:07 PM CDT, 5 hours 29 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
Local storm report, Sep 7, 9:37 PM CDT, 2 hours 59 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, 2 hours 30 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, 2 hours 23 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.
Special weather statement, Sep 7, 11:03 PM CDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1103 PM CDT FRI SEP 7 2001 OKZ057-058-062-065>067-080900- CRAIG-MAYES-OKFUSKEE-OKMULGEE-OTTAWA-WAGONER- 1103 PM CDT FRI SEP 7 2001 ...TORNADO WATCH NUMBER 720 HAS BEEN CANCELLED... TORNADO WATCH NUMBER 720 HAS BEEN CANCELLED FOR CRAIG...MAYES... OKFUSKEE...OKMULGEE...OTTAWA AND WAGONER COUNTIES. ARZ001-002-010-011-019-020-029-OKZ049-053-063-068>076-080900- ADAIR-BENTON-CARROLL-CHEROKEE-CHOCTAW-CRAWFORD-DELAWARE-FRANKLIN- HASKELL-LATIMER-LE FLORE-MADISON-MCINTOSH-MUSKOGEE-PITTSBURG- PUSHMATAHA-SEBASTIAN-SEQUOYAH-WASHINGTON AR- 1103 PM CDT FRI SEP 7 2001 ...SEVERE THUNDERSTORM WATCH NUMBER 724 REMAINS IN EFFECT THROUGH 400 AM... SEVERE THUNDERSTORM WATCH NUMBER 724 REPLACES PARTS OF TORNADO WATCH 720 IN PORTIONS OF EASTERN OKLAHOMA AND INCLUDES ALL OF SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. IN EASTERN OKLAHOMA THE WATCH INCLUDES: ADAIR...CHEROKEE... CHOCTAW...DELAWARE...HASKELL...LATIMER...LE FLORE...MCINTOSH... MUSKOGEE...PITTSBURG...PUSHMATAHA AND SEQUOYAH COUNTIES. IN NORTHWEST ARKANSAS THE WATCH INCLUDES: BENTON...CARROLL... MADISON...CRAWFORD...FRANKLIN...SEBASTIAN AND WASHINGTON COUNTIES.
Local storm report, Sep 7, 11:44 PM CDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1144 PM CDT FRI SEP 07 2001
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1130 PM TAHLEQUAH OK WIND DAMAGE
09/07/01 CHEROKEE LARGE LIMBS DOWNED.
REPORTED BY CHEROKEE
S.O.Special weather statement, Sep 8, 12:36 AM CDT, 0 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053-063-068>076-080900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1236 AM CDT SAT SEP 8 2001 SEVERE THUNDERSTORM WATCH NUMBER 724 REMAINS IN EFFECT UNTIL 4AM FOR THE FOLLOWING COUNTIES... IN OKLAHOMA... CHOCTAW...HASKELL...LE FLORE AND PUSHMATAHA... IN ARKANSAS... BENTON...CARROLL...CRAWFORD...FRANKLIN...MADISON...SEBASTIAN AND WASHINGTON. THE LINE OF THUNDERSTORMS MOVING THROUGH NORTHWEST ARKANSAS AND SOUTHEAST OKLAHOMA WILL CONTINUE TO POSE A THREAT FOR HAIL AND DAMAGING WINDS. SEVERE THUNDERSTORM WATCH NUMBER 724 HAS BEEN CANCELED IN THE FOLLOWING OKLAHOMA COUNTIES... ADAIR...CHEROKEE...DELAWARE...MCINTOSH...MUSKOGEE AND PITTSBURG. THE LINE OF SEVERE THUNDERSTORMS WAS EXITING THESE AREAS AND THE THREAT OF DAMAGING WINDS AND LARGE HAIL HAS ENDED.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 10:14 PM CDT | Severe Thunderstorm Warning | TSA | Benton | 61 min |
| Sep 7, 11:38 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 67 min |
| Sep 7, 11:59 PM CDT | Severe Thunderstorm Warning | TSA | Crawford | 61 min |
| Sep 8, 12:06 AM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 54 min |
| Sep 8, 12:11 AM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 64 min |
| Sep 8, 12:44 AM CDT | Severe Thunderstorm Warning | TSA | Washington | 31 min |
| Sep 8, 1:13 AM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 47 min |
| Sep 8, 5:37 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Franklin | 38 min |
| Sep 8, 6:16 PM CDT | Severe Thunderstorm Warning | TSA | Franklin | 44 min |
| Sep 8, 6:30 PM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 60 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 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.