Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 106, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Jun 18, 2011, 9:37 PM CDT for Nowata County, Oklahoma. It was in force for 43 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
- Jun 18, 2011, 9:37 PM CDT (02:37 UTC)
- Expired
- Jun 18, 2011, 10:20 PM CDT
- In force
- 43 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
County Nowata County, OK
The radar
The Tulsa radar (KINX), 86 km from the middle of the area, began a volume at 02:39 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 |
|---|---|---|---|
| Jun 18, 10:01 PM CDT | HAIL 1 | South Coffeyville, OK | |
| Jun 18, 10:04 PM CDT | HAIL 0.88 | South Coffeyville, OK |
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 |
|---|---|---|---|
| Jun 18, 6:03 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 2.6 hours before the alert went out and 162 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
- 3821 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 2143 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 12.3
The text
As transmitted, in the capitals the NWS used until 2016.
169
WFUS54 KTSA 190237
TORTSA
OKC105-190330-
/O.NEW.KTSA.TO.W.0106.110619T0237Z-110619T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
937 PM CDT SAT JUN 18 2011
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN NOWATA COUNTY IN NORTHEAST OKLAHOMA
* UNTIL 1030 PM CDT
* AT 935 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED NEAR WANN...MOVING EAST AT 20 MPH.
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...SOUTH
COFFEYVILLE.
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 3700 9558 3685 9559 3687 9581 3694 9581
3695 9579 3699 9579
TIME...MOT...LOC 0237Z 266DEG 10KT 3692 9580
$$3 follow-up statements
711
WWUS54 KTSA 190258
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
958 PM CDT SAT JUN 18 2011
OKC105-190330-
/O.CON.KTSA.TO.W.0106.000000T0000Z-110619T0330Z/
NOWATA OK-
958 PM CDT SAT JUN 18 2011
...TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR NORTHERN
NOWATA COUNTY...
AT 952 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED 6 MILES WEST OF
SOUTH COFFEYVILLE...MOVING EAST AT 10 MPH.
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...SOUTH
COFFEYVILLE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
NIGHTTIME TORNADOES ARE ESPECIALLY DANGEROUS...TAKE COVER NOW! IF YOU
WAIT UNTIL YOU SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A
SAFE PLACE!
&&
LAT...LON 3690 9575 3695 9576 3699 9575 3700 9558
3685 9559
TIME...MOT...LOC 0257Z 266DEG 10KT 3696 9571
$$406 WWUS54 KTSA 190312 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1012 PM CDT SAT JUN 18 2011 OKC105-190330- /O.CON.KTSA.TO.W.0106.000000T0000Z-110619T0330Z/ NOWATA OK- 1012 PM CDT SAT JUN 18 2011 ...TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR NORTHERN NOWATA COUNTY... AT 1010 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR SOUTH COFFEYVILLE...MOVING NORTHEAST AT 15 MPH. THE WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. 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 3694 9566 3699 9569 3700 9558 3693 9558 TIME...MOT...LOC 0312Z 243DEG 14KT 3699 9560 $$
195 WWUS54 KTSA 190320 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1020 PM CDT SAT JUN 18 2011 OKC105-190329- /O.CAN.KTSA.TO.W.0106.000000T0000Z-110619T0330Z/ NOWATA OK- 1020 PM CDT SAT JUN 18 2011 ...THE TORNADO WARNING FOR NORTHERN NOWATA COUNTY IS CANCELLED... THE CIRCULATION HAS MOVED OUT OF THE WARNED AREA AND WEAKENED ...THEREFORE THE TORNADO WARNING HAS BEEN CANCELLED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 2 AM CDT. LAT...LON 3694 9566 3699 9569 3700 9558 3693 9558 TIME...MOT...LOC 0319Z 243DEG 14KT 3700 9557 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 7:35 PM CDT | Tornado Warning | TSA | Osage | 40 min |
| Jun 18, 7:48 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 57 min |
| Jun 18, 8:04 PM CDT | Tornado Warning | TSA | Osage | 41 min |
| Jun 18, 8:33 PM CDT | Tornado Warning | TSA | Osage, Washington | 42 min |
| Jun 18, 8:37 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 38 min |
| Jun 18, 9:11 PM CDT | Tornado Warning | TSA | Nowata, Washington | 49 min |
| Jun 18, 9:16 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 59 min |
| Jun 18, 10:08 PM CDT | Special Weather Statement | TSA | Osage | 37 min |
| Jun 19, 2:20 AM CDT | Special Weather Statement | TSA | Nowata | 25 min |
Nearby
Tornado Warnings in Oklahoma, 2011Every tornado warning in 2011Tornadoes in 2011
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.