Alert archive / Oklahoma / Tornado Warnings in 2013
Tornado Warning 9, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 18, 2013, 2:39 AM CDT for Adair County, Cherokee County, Delaware County, Oklahoma; Benton County, Washington County, Arkansas. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2013, 2:39 AM CDT (07:39 UTC)
- Expired
- Apr 18, 2013, 3:30 AM CDT
- In force
- 51 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Benton County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Delaware County, OK
The radar
The Tulsa radar (KINX), 101 km from the middle of the area, began a volume at 07:41 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 17, 10:47 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 7.7 hours before the alert went out and 91 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
- 1964 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 1350 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 9.2
The text
As transmitted, in the capitals the NWS used until 2016.
262 WFUS54 KTSA 180739 TORTSA ARC007-143-OKC001-021-041-180830- /O.NEW.KTSA.TO.W.0009.130418T0739Z-130418T0830Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 239 AM CDT THU APR 18 2013 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA... NORTHERN ADAIR COUNTY IN NORTHEAST OKLAHOMA... SOUTHEASTERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA... WESTERN BENTON COUNTY IN NORTHWEST ARKANSAS... NORTHWESTERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS... * UNTIL 330 AM CDT * AT 236 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED 7 MILES SOUTHEAST OF KANSAS...MOVING NORTHEAST AT 45 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... COLCORD...WATTS...WEST SILOAM SPRINGS...SILOAM SPRINGS...GENTRY... SPRINGTOWN...DECATUR...HIGHFILL...TONTITOWN...CAVE SPRINGS... SPRINGDALE...BENTONVILLE AND BELLA VISTA. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE PATH OF THIS STORM...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! && LAT...LON 3646 9422 3618 9410 3599 9477 3620 9489 TIME...MOT...LOC 0740Z 244DEG 38KT 3613 9469 $$
2 follow-up statements
171 WWUS54 KTSA 180806 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 306 AM CDT THU APR 18 2013 OKC021-180816- /O.CAN.KTSA.TO.W.0009.000000T0000Z-130418T0830Z/ CHEROKEE OK- 306 AM CDT THU APR 18 2013 ...THE TORNADO WARNING FOR NORTHEASTERN CHEROKEE COUNTY IS CANCELLED... LAT...LON 3601 9470 3628 9460 3646 9422 3618 9410 TIME...MOT...LOC 0806Z 241DEG 35KT 3617 9446 $$ ARC007-143-OKC001-041-180830- /O.CON.KTSA.TO.W.0009.000000T0000Z-130418T0830Z/ BENTON AR-WASHINGTON AR-DELAWARE OK-ADAIR OK- 306 AM CDT THU APR 18 2013 ...TORNADO WARNING REMAINS IN EFFECT UNTIL 330 AM CDT FOR NORTHERN ADAIR...SOUTHEASTERN DELAWARE...NORTHWESTERN WASHINGTON AND WESTERN BENTON COUNTIES... AT 303 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED NEAR LAKE FRANCIS...MOVING NORTHEAST AT 40 MPH. SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...GENTRY... GALLITIN...FAIRMOUNT...SPRINGTOWN...DECATUR...HIGHFILL...HARMON... ROCKY COMFORT...TONTITOWN...HEALING SPRINGS...ELM SPRINGS...VAUGHN... OAK GROVE...CAVE SPRINGS...CENTERTON...SPRINGDALE...BELLA VISTA... BENTONVILLE AND MILLER. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE PATH OF THIS STORM...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! && LAT...LON 3601 9470 3628 9460 3646 9422 3618 9410 TIME...MOT...LOC 0806Z 241DEG 35KT 3617 9446 $$
939 WWUS54 KTSA 180826 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 326 AM CDT THU APR 18 2013 ARC007-143-OKC001-041-180836- /O.EXP.KTSA.TO.W.0009.000000T0000Z-130418T0830Z/ BENTON AR-WASHINGTON AR-DELAWARE OK-ADAIR OK- 326 AM CDT THU APR 18 2013 ...THE TORNADO WARNING FOR NORTHERN ADAIR...SOUTHEASTERN DELAWARE... NORTHWESTERN WASHINGTON AND WESTERN BENTON COUNTIES EXPIRES AT 330 AM CDT... THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE TORNADO WARNING WILL BE ALLOWED TO EXPIRE. GUSTY WINDS...SMALL HAIL AND VERY HEAVY RAIN WILL STILL BE POSSIBLE WITH THIS STORM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CDT. LAT...LON 3601 9470 3628 9460 3646 9422 3618 9410 TIME...MOT...LOC 0826Z 241DEG 35KT 3625 9428 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 17, 7:22 PM CDT | Special Weather Statement | TSA | Delaware | 53 min |
| Apr 17, 8:42 PM CDT | Special Weather Statement | TSA | Delaware | 33 min |
| Apr 17, 9:02 PM CDT | Special Weather Statement | TSA | Pawnee | 43 min |
| Apr 17, 9:38 PM CDT | Special Weather Statement | TSA | Creek, Osage, Washington | 52 min |
| Apr 17, 10:09 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee, Okmulgee, Tulsa | 51 min |
| Apr 17, 10:35 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Pawnee, Rogers, Tulsa, Washington | 55 min |
| Apr 17, 10:46 PM CDT | Special Weather Statement | TSA | Craig, Nowata | 44 min |
| Apr 17, 11:00 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee, Okmulgee, Tulsa | 60 min |
| Apr 17, 11:12 PM CDT | Tornado Warning | TSA | Creek, Okmulgee | 33 min |
| Apr 17, 11:44 PM CDT | Tornado Warning | TSA | Creek, Okmulgee, Rogers, Tulsa, Wagoner | 31 min |
| Apr 17, 11:53 PM CDT | Severe Thunderstorm Warning | TSA | Mayes, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner | 52 min |
| Apr 18, 12:17 AM CDT | Flash Flood Warning | TSA | Creek, Muskogee, Okfuskee, Okmulgee, Rogers, Tulsa and 1 more | 4 hr |
| Apr 18, 12:17 AM CDT | Tornado Warning | TSA | Mayes, Rogers, Tulsa, Wagoner | 28 min |
| Apr 18, 12:38 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Delaware, Mayes, Muskogee, Okmulgee and 2 more | 67 min |
| Apr 18, 12:46 AM CDT | Tornado Warning | TSA | Delaware, Mayes | 29 min |
| Apr 18, 1:00 AM CDT | Flash Flood Warning | TSA | Cherokee, Craig, Delaware, Mayes, Muskogee, Ottawa and 2 more | 4 hr |
| Apr 18, 1:16 AM CDT | Tornado Warning | TSA | Delaware, Mayes, Ottawa | 44 min |
| Apr 18, 1:53 AM CDT | Tornado Warning | TSA | Adair, Cherokee, Delaware | 37 min |
| Apr 18, 2:19 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Delaware | 56 min |
| Apr 18, 2:46 AM CDT | Special Weather Statement | TSA | McIntosh, Muskogee, Okmulgee, Wagoner | 44 min |
| Apr 18, 3:11 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, McIntosh, Muskogee, Okmulgee, Wagoner | 64 min |
| Apr 18, 3:16 AM CDT | Flash Flood Warning | TSA | Adair, Cherokee, Delaware, Ottawa | 4 hr |
| Apr 18, 4:28 AM CDT | Areal Flood Warning | TSA | Creek, Muskogee, Okfuskee, Okmulgee, Tulsa, Wagoner | 14 hr |
| Apr 18, 4:55 AM CDT | Areal Flood Warning | TSA | Cherokee, Delaware, Mayes, Muskogee, Rogers, Wagoner | 14 hr |
| Apr 18, 7:15 AM CDT | Areal Flood Warning | TSA | Adair, Cherokee, Delaware | 12 hr |
| Apr 18, 8:23 AM CDT | River Flood Warning | TSA | Cherokee, Delaware | 8 hr |
| Apr 18, 8:37 AM CDT | River Flood Warning | TSA | Okmulgee | 4 days |
| Apr 18, 9:08 AM CDT | River Flood Warning | TSA | Cherokee | 48 hr |
| Apr 18, 11:58 AM CDT | River Flood Warning | TSA | Adair | 30 hr |
| Apr 18, 3:30 PM CDT | Freeze Warning | TSA | Craig, Creek, Nowata, Pawnee, Rogers, Tulsa and 1 more | 17 hr |
| Apr 18, 6:00 AM CDT | Special Weather Statement | TSA | Washington | 30 min |
Nearby
Tornado Warnings in Oklahoma, 2013Tornado Warnings in Arkansas, 2013Every tornado warning in 2013Tornadoes in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.