Alert archive / Oklahoma / Tornado Warnings in 2013
Tornado Warning 7, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 18, 2013, 1:16 AM CDT for Delaware County, Mayes County, Ottawa County, Oklahoma. It was in force for 44 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 18, 2013, 1:16 AM CDT (06:16 UTC)
- Expired
- Apr 18, 2013, 2:00 AM CDT
- In force
- 44 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Delaware County, OK, Mayes County, OK, Ottawa County, OK
The radar
The Tulsa radar (KINX), 74 km from the middle of the area, began a volume at 06:16 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 |
|---|---|---|---|
| Apr 18, 1:27 AM CDT | TORNADO | 4 E Zena, OK | TORNADO CONFIRMED BY AN NWS SURVEY TEAM. PRELIMINARY RATING EF2. ADDITIONAL DETAILS...INCLUDING PATH LENGTH AND WIDTH...AS WELL AS DETAILS ON THE SPECIFIC DAMAGE ...ARE BEING COMPILED. |
| Apr 18, 1:34 AM CDT | TORNADO | 6 Ese Grove, OK | SEVERAL HOMES DESTROYED AND POWER POLES SNAPPED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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, 6.3 hours before the alert went out and 104 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.
063
WFUS54 KTSA 180616
TORTSA
OKC041-097-115-180700-
/O.NEW.KTSA.TO.W.0007.130418T0616Z-130418T0700Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
116 AM CDT THU APR 18 2013
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* TORNADO WARNING FOR...
NORTHERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA...
NORTHEASTERN MAYES COUNTY IN NORTHEAST OKLAHOMA...
SOUTHEASTERN OTTAWA COUNTY IN NORTHEAST OKLAHOMA...
* UNTIL 200 AM CDT
* AT 111 AM CDT...A SEVERE THUNDERSTORM WITH STRONG LOW LEVEL
ROTATION WAS LOCATED NEAR SPAVINAW...MOVING NORTHEAST AT 45 MPH.
THIS STORM HAS A HISTORY OF PRODUCING TORNADOES AND ANOTHER
TORNADO IS OCCURRING OR IMMINENT.
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...JAY...
HONEY CREEK STATE PARK AND GROVE.
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 3683 9461 3650 9461 3629 9502 3642 9517
3651 9504 3651 9501 3654 9500
TIME...MOT...LOC 0616Z 233DEG 38KT 3643 9498
$$4 follow-up statements
885
WWUS54 KTSA 180623
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
123 AM CDT THU APR 18 2013
OKC097-180632-
/O.CAN.KTSA.TO.W.0007.000000T0000Z-130418T0700Z/
MAYES OK-
123 AM CDT THU APR 18 2013
...THE TORNADO WARNING FOR NORTHEASTERN MAYES COUNTY IS CANCELLED...
LAT...LON 3650 9461 3633 9494 3649 9501 3654 9500
3683 9461
TIME...MOT...LOC 0622Z 233DEG 38KT 3651 9491
$$
OKC041-115-180700-
/O.CON.KTSA.TO.W.0007.000000T0000Z-130418T0700Z/
DELAWARE OK-OTTAWA OK-
123 AM CDT THU APR 18 2013
...TORNADO WARNING REMAINS IN EFFECT UNTIL 200 AM CDT FOR
SOUTHEASTERN OTTAWA AND NORTHERN DELAWARE COUNTIES...
AT 121 AM CDT...A SEVERE THUNDERSTORM WITH STRONG LOW LEVEL ROTATION
WAS LOCATED NEAR ZENA...MOVING NORTHEAST AT 45 MPH. THIS STORM
PRODUCED A TORNADO IN SPAVINAW AT ABOUT 110 AM...AND ANOTHER TORNADO
IS OCCURRING OR IMMINENT.
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...JAY...
ZENA...HONEY CREEK STATE PARK...GROVE AND TIFF CITY.
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 3650 9461 3633 9494 3649 9501 3654 9500
3683 9461
TIME...MOT...LOC 0622Z 233DEG 38KT 3651 9491
$$072 WWUS54 KTSA 180632 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 132 AM CDT THU APR 18 2013 OKC041-115-180700- /O.CON.KTSA.TO.W.0007.000000T0000Z-130418T0700Z/ DELAWARE OK-OTTAWA OK- 132 AM CDT THU APR 18 2013 ...TORNADO WARNING REMAINS IN EFFECT UNTIL 200 AM CDT FOR SOUTHEASTERN OTTAWA AND NORTHERN DELAWARE COUNTIES... AT 125 AM CDT...A SEVERE THUNDERSTORM WITH VERY STRONG LOW LEVEL ROTATION WAS LOCATED NEAR JAY...MOVING NORTHEAST AT 65 MPH. THIS STORM PRODUCED A TORNADO IN SPAVINAW AT 110 AM...AND ANOTHER TORNADO IS LIKELY OCCURRING EAST OF ZENA AND NORTH OF JAY. SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...HONEY CREEK STATE PARK...GROVE AND TIFF CITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS! && LAT...LON 3659 9493 3683 9461 3650 9461 3638 9485 TIME...MOT...LOC 0631Z 216DEG 57KT 3653 9475 $$
968
WWUS54 KTSA 180637
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
137 AM CDT THU APR 18 2013
OKC041-115-180700-
/O.CON.KTSA.TO.W.0007.000000T0000Z-130418T0700Z/
DELAWARE OK-OTTAWA OK-
137 AM CDT THU APR 18 2013
...TORNADO WARNING REMAINS IN EFFECT UNTIL 200 AM CDT FOR
SOUTHEASTERN OTTAWA AND NORTHEASTERN DELAWARE COUNTIES...
AT 134 AM CDT...A DAMAGING TORNADO WAS LOCATED NEAR HONEY CREEK STATE
PARK...MOVING NORTHEAST AT 45 MPH. THIS IS A LIFE THREATENING
SITUATION...RADAR CONFIRMS TORNADO DEBRIS IN THE AIR!
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...TIFF CITY.
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 3650 9461 3644 9473 3665 9484 3682 9462
3682 9461
TIME...MOT...LOC 0637Z 235DEG 39KT 3653 9469
$$551
WWUS54 KTSA 180652
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
152 AM CDT THU APR 18 2013
OKC041-115-180703-
/O.EXP.KTSA.TO.W.0007.000000T0000Z-130418T0700Z/
DELAWARE OK-OTTAWA OK-
152 AM CDT THU APR 18 2013
...THE TORNADO WARNING FOR SOUTHEASTERN OTTAWA AND NORTHEASTERN
DELAWARE COUNTIES EXPIRES AT 200 AM CDT...
THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
TORNADO WARNING WILL BE ALLOWED TO EXPIRE.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 6 AM.
LAT...LON 3650 9461 3644 9473 3665 9484 3682 9462
3682 9461
TIME...MOT...LOC 0653Z 235DEG 39KT 3663 9451
$$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, 1:53 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, 2:39 AM CDT | Tornado Warning | TSA | Adair, Cherokee, Delaware | 51 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 |
Nearby
Tornado Warnings in Oklahoma, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.