Alert archive / Oklahoma / Tornado Warnings in 2011

Tornado Warning 102, NWS Tulsa, OK

June 18, 2011Osage County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Jun 18, 2011, 7:35 PM CDT for Osage County, Oklahoma. It was in force for 40 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, 7:35 PM CDT (00:35 UTC)
Expired: Jun 18, 2011, 8:15 PM CDT
In force: 40 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

County Osage County, OK

The radar

The Tulsa radar (KINX), 113 km from the middle of the area, began a volume at 00:37 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, 0.6 hours before the alert went out and 105 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

160 
WFUS54 KTSA 190035
TORTSA
OKC113-190115-
/O.NEW.KTSA.TO.W.0102.110619T0035Z-110619T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
735 PM CDT SAT JUN 18 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN OSAGE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 815 PM CDT

* AT 733 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER NORTHERN OSAGE COUNTY...MOVING EAST AT    
  15 MPH.

* THE TORNADO 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 3700 9627 3686 9627 3691 9653 3700 9653
TIME...MOT...LOC 0035Z 271DEG 15KT 3697 9649

$$

1 follow-up statement

718 
WWUS54 KTSA 190051
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
751 PM CDT SAT JUN 18 2011

OKC113-190115-
/O.CON.KTSA.TO.W.0102.000000T0000Z-110619T0115Z/
OSAGE OK-
751 PM CDT SAT JUN 18 2011

...TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR NORTHERN
OSAGE COUNTY...

AT 749 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED OVER NORTHERN
OSAGE COUNTY...MOVING EAST AT 25 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 3700 9646 3700 9627 3686 9627 3691 9651
TIME...MOT...LOC 0052Z 278DEG 20KT 3695 9638

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
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, 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, 2011 Every tornado warning in 2011 Tornadoes 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.