Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 65, NWS Tulsa, OK

April 14, 20115 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 14, 2011, 5:32 PM CDT for 5 counties in Oklahoma. It was in force for 13 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 14, 2011, 5:32 PM CDT (22:32 UTC)
Expired: Apr 14, 2011, 5:45 PM CDT
In force: 13 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Creek County, OK, Osage County, OK, Pawnee County, OK, Tulsa County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 48 km from the middle of the area, began a volume at 22:33 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 14, 2:28 PM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 10.5 hours before the alert went out and 131 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: 155 J/kg
Mixed-layer CIN: -470 J/kg
Mixed-layer LCL: 1449 m above ground
0-6 km bulk shear: 91 kt
0-1 km storm-relative helicity: 507 m²/s²
0-3 km storm-relative helicity: 541 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

666 
WUUS54 KTSA 142232
SVRTSA
OKC037-113-117-143-147-142300-
/O.NEW.KTSA.SV.W.0065.110414T2232Z-110414T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
532 PM CDT THU APR 14 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CREEK COUNTY IN NORTHEAST OKLAHOMA
  SOUTHEASTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
  EASTERN PAWNEE COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN TULSA COUNTY IN NORTHEAST OKLAHOMA
  SOUTHERN WASHINGTON COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 600 PM CDT

* AT 529 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES EAST OF
  MANNFORD...MOVING NORTHEAST AT 45 MPH.

  STORM HAZARDS INCLUDE...
  HALF DOLLAR SIZE HAIL...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  WESTPORT...SAND SPRINGS...SPERRY...VERA...COLLINSVILLE...SKIATOOK
  AND AVANT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
TAKE COVER ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM
WINDOWS.

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3654 9597 3638 9581 3637 9581 3600 9625
      3612 9641 3648 9615
TIME...MOT...LOC 2232Z 221DEG 38KT 3613 9625

$$

1 follow-up statement

780 
WWUS54 KTSA 142245
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
545 PM CDT THU APR 14 2011

OKC037-113-117-143-147-142255-
/O.CAN.KTSA.SV.W.0065.000000T0000Z-110414T2300Z/
WASHINGTON OK-OSAGE OK-CREEK OK-TULSA OK-PAWNEE OK-
545 PM CDT THU APR 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PAWNEE...NORTHWESTERN
TULSA...NORTHERN CREEK...SOUTHEASTERN OSAGE AND SOUTHERN WASHINGTON
COUNTIES IS CANCELLED...

THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM.

LAT...LON 3654 9597 3638 9581 3637 9581 3600 9625
      3612 9641 3648 9615
TIME...MOT...LOC 2245Z 221DEG 38KT 3623 9614

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 3:12 PM CDT	Special Weather Statement	TSA	Pawnee	33 min
Apr 14, 3:21 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	54 min
Apr 14, 3:37 PM CDT	Severe Thunderstorm Warning	TSA	Pawnee	53 min
Apr 14, 4:09 PM CDT	Tornado Warning	TSA	Osage	36 min
Apr 14, 4:13 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	62 min
Apr 14, 4:27 PM CDT	Severe Thunderstorm Warning	TSA	Creek	48 min
Apr 14, 4:27 PM CDT	Tornado Warning	TSA	Osage, Pawnee	33 min
Apr 14, 4:37 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	38 min
Apr 14, 4:41 PM CDT	Tornado Warning	TSA	Osage	34 min
Apr 14, 4:48 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	57 min
Apr 14, 4:54 PM CDT	Tornado Warning	TSA	Osage	36 min
Apr 14, 4:57 PM CDT	Tornado Warning	TSA	Creek, Okmulgee	33 min
Apr 14, 5:08 PM CDT	Tornado Warning	TSA	Osage	23 min
Apr 14, 5:16 PM CDT	Tornado Warning	TSA	Osage, Washington	44 min
Apr 14, 5:23 PM CDT	Tornado Warning	TSA	Creek, Okfuskee	52 min
Apr 14, 5:29 PM CDT	Tornado Warning	TSA	Creek, Tulsa	46 min
Apr 14, 5:46 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	29 min
Apr 14, 5:51 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	54 min
Apr 14, 5:51 PM CDT	Tornado Warning	TSA	Nowata, Washington	39 min
Apr 14, 6:09 PM CDT	Tornado Warning	TSA	Rogers, Tulsa, Wagoner	51 min
Apr 14, 6:09 PM CDT	Tornado Warning	TSA	Creek, Okfuskee, Okmulgee	51 min
Apr 14, 6:12 PM CDT	Tornado Warning	TSA	Okfuskee, Okmulgee	34 min
Apr 14, 6:17 PM CDT	Tornado Warning	TSA	Pittsburg	43 min
Apr 14, 6:23 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa	52 min
Apr 14, 6:41 PM CDT	Special Weather Statement	TSA	LeFlore	49 min
Apr 14, 6:48 PM CDT	Special Weather Statement	TSA	Rogers	42 min
Apr 14, 6:55 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Rogers	50 min
Apr 14, 6:57 PM CDT	Special Weather Statement	TSA	Craig	48 min
Apr 14, 6:59 PM CDT	Tornado Warning	TSA	Latimer, Pittsburg	61 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2011 Every severe thunderstorm warning 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.