Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 105, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Jun 18, 2011, 9:11 PM CDT for Nowata County, Washington County, Oklahoma. It was in force for 49 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
- Jun 18, 2011, 9:11 PM CDT (02:11 UTC)
- Expired
- Jun 18, 2011, 10:00 PM CDT
- In force
- 49 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Nowata County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 78 km from the middle of the area, began a volume at 02:12 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.
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, 2.2 hours before the alert went out and 151 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.
172 WFUS54 KTSA 190211 TORTSA OKC105-147-190300- /O.NEW.KTSA.TO.W.0105.110619T0211Z-110619T0300Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TULSA OK 911 PM CDT SAT JUN 18 2011 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * TORNADO WARNING FOR... WESTERN NOWATA COUNTY IN NORTHEAST OKLAHOMA WASHINGTON COUNTY IN NORTHEAST OKLAHOMA * UNTIL 1000 PM CDT * AT 908 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS LOCATED 2 MILES SOUTH OF COPAN...MOVING EAST AT 15 MPH. THIS IS A DANGEROUS STORM WITH STRONG LOW LEVEL ROTATION...A TORNADO IS OCCURRING OR COULD FORM AT ANY TIME. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...WANN. THIS WARNING REPLACES THE PREVIOUS TORNADO WARNING THAT WAS IN EFFECT FOR NORTHERN WASHINGTON 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! 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 3677 9572 3683 9596 3692 9595 3693 9572 TIME...MOT...LOC 0211Z 280DEG 13KT 3687 9592 $$
2 follow-up statements
766 WWUS54 KTSA 190231 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 931 PM CDT SAT JUN 18 2011 OKC105-147-190300- /O.CON.KTSA.TO.W.0105.000000T0000Z-110619T0300Z/ NOWATA OK-WASHINGTON OK- 931 PM CDT SAT JUN 18 2011 ...TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR WASHINGTON AND WESTERN NOWATA COUNTIES... AT 930 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR WANN... MOVING EAST AT 10 MPH. SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...WANN. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS! && LAT...LON 3686 9587 3692 9587 3693 9572 3682 9572 TIME...MOT...LOC 0231Z 276DEG 8KT 3689 9583 $$
013 WWUS54 KTSA 190256 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 956 PM CDT SAT JUN 18 2011 OKC105-147-190304- /O.EXP.KTSA.TO.W.0105.000000T0000Z-110619T0300Z/ NOWATA OK-WASHINGTON OK- 956 PM CDT SAT JUN 18 2011 ...TORNADO WARNING CONTINUES FOR NORTHWESTERN NOWATA COUNTY UNTIL 1030 PM CDT... ...THE TORNADO WARNING FOR WASHINGTON AND WEST CENTRAL NOWATA COUNTIES EXPIRES AT 1000 PM CDT... THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE TORNADO WARNING WILL BE ALLOWED TO EXPIRE. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 2 AM CDT. LAT...LON 3686 9587 3692 9587 3693 9572 3682 9572 TIME...MOT...LOC 0254Z 276DEG 8KT 3688 9577 $$
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, 9:16 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 59 min |
| Jun 18, 9:37 PM CDT | Tornado Warning | TSA | Nowata | 43 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.