Alert archive / Oklahoma / Tornado Warnings in 2001
Tornado Warning 14, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at May 20, 2001, 7:12 PM CDT for LeFlore County, Sequoyah County, Oklahoma. It was in force for 63 min. 2 reports 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
- May 20, 2001, 7:12 PM CDT (00:12 UTC)
- Expired
- May 20, 2001, 8:15 PM CDT
- In force
- 63 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
Counties LeFlore County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 35 km from the middle of the area, began a volume at 00:12 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 |
|---|---|---|---|
| May 20, 7:45 PM CDT | Hail 0.88 | Spiro, OK | |
| May 20, 7:55 PM CDT | Tornado F0 | Spiro, OK | A F0 tornado briefly touched down two miles west of Spiro. No damage was reported. |
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 |
|---|---|---|---|
| May 20, 3:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.2 hours before the alert went out and 207 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
- 1724 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 670 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 232 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 8.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS54 KTSA 210013
TORTUL
OKC079-135-210115-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
712 PM CDT SUN MAY 20 2001
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA
NORTHERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA
* UNTIL 815 PM CDT
* AT 712 PM CDT...DOPPLER RADAR INDICATED A TORNADIC THUNDERSTORM 12
MILES NORTHWEST OF BOKOSHE...MOVING EAST AT 35 MPH. THE PUBLIC
REPORTED A TORNADO ON THE GROUND WITH THIS STORM IN STIGLER AT 700 PM.
THIS IS A LIFE THREATENING SITUATION...TAKE COVER NOW!
* SOME LOCATIONS NEAR THE PATH OF THIS TORNADO INCLUDE...ARKOMA...
POCOLA...SPIRO...BOKOSHE...PANAMA...MOFFETT...ROLAND...MULDROW...
GANS AND SALLISAW.
IF YOU ARE IN OR NEAR THE PATH OF THIS TORNADO...TAKE COVER NOW! IF
NO UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
IN ADDITION TO THE TORNADO...GOLFBALL SIZED OR LARGER HAIL AND
DAMAGING STRAIGHT LINE WINDS CAN BE EXPECTED WITH THIS STORM. GO TO
A SAFE PLACE NOW!
LATu...LON 3549 9445 3515 9443 3511 9492 3547 9488
3549 9475The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 7:00 PM CDT | Tornado Warning | TSA | Pittsburg | 60 min |
| May 20, 7:06 PM CDT | Severe Thunderstorm Warning | TSA | Nowata | 54 min |
| May 20, 7:16 PM CDT | Tornado Warning | TSA | Haskell | 44 min |
| May 20, 7:17 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 28 min |
| May 20, 7:20 PM CDT | Tornado Warning | TSA | Latimer | 55 min |
| May 20, 7:23 PM CDT | Severe Thunderstorm Warning | TSA | Rogers | 67 min |
| May 20, 7:30 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa, Washington | 45 min |
| May 20, 7:32 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 43 min |
| May 20, 7:39 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee, Okmulgee | 51 min |
| May 20, 7:43 PM CDT | Tornado Warning | TSA | Pittsburg | 62 min |
| May 20, 7:48 PM CDT | Severe Thunderstorm Warning | TSA | Wagoner | 42 min |
| May 20, 8:08 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 67 min |
| May 20, 8:09 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 51 min |
| May 20, 8:19 PM CDT | Tornado Warning | TSA | Latimer, LeFlore | 56 min |
| May 20, 8:27 PM CDT | Severe Thunderstorm Warning | TSA | Mayes | 63 min |
| May 20, 8:34 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee | 26 min |
| May 20, 8:46 PM CDT | Severe Thunderstorm Warning | TSA | Haskell | 44 min |
| May 20, 9:00 PM CDT | Tornado Warning | TSA | LeFlore | 60 min |
| May 20, 9:19 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 41 min |
| May 20, 9:50 PM CDT | Severe Thunderstorm Warning | TSA | Haskell | 40 min |
| May 20, 9:59 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 46 min |
| May 20, 10:04 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee | 56 min |
| May 20, 10:13 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pushmataha | 62 min |
| May 20, 10:25 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 50 min |
| May 20, 10:39 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 51 min |
| May 20, 10:46 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 59 min |
| May 20, 10:52 PM CDT | Flash Flood Warning | TSA | Haskell, LeFlore, Sequoyah | 113 min |
| May 20, 11:06 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 54 min |
| May 20, 11:07 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 38 min |
| May 20, 11:31 PM CDT | Severe Thunderstorm Warning | TSA | Haskell | 44 min |
| May 20, 11:45 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 45 min |
| May 20, 11:50 PM CDT | Severe Thunderstorm Warning | TSA | Latimer | 55 min |
| May 20, 11:56 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 49 min |
| May 21, 12:03 AM CDT | Tornado Warning | TSA | LeFlore | 27 min |
| May 21, 12:45 AM CDT | Severe Thunderstorm Warning | TSA | Pittsburg, Pushmataha | 45 min |
| May 21, 1:28 AM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 62 min |
| May 21, 2:26 AM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 64 min |
| May 21, 2:29 AM CDT | Flash Flood Warning | TSA | Pushmataha | 3 hr |
Nearby
Tornado Warnings in Oklahoma, 2001Every tornado warning in 2001Tornadoes 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.