Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 7, NWS Tulsa, OK

February 28, 20124 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Feb 28, 2012, 10:57 PM CST for 4 counties in Oklahoma. It was in force for 48 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: Feb 28, 2012, 10:57 PM CST (04:57 UTC)
Expired: Feb 28, 2012, 11:45 PM CST
In force: 48 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Mayes County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 13 km from the middle of the area, began a volume at 04:58 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
Feb 28, 11:00 PM CST	TSTM WND DMG	2 E Tulsa, OK	NEAR 31ST STREET AND MEMORIAL...LARGE SIGNS DAMAGED AND DESTROYED.
Feb 28, 11:30 PM CST	TSTM WND DMG	Pryor, OK	TREE BLOWN DOWN. ALSO SOME TREE LIMBS DOWNED.

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
Feb 28, 8:10 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 5.0 hours before the alert went out and 165 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: 386 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 369 m²/s²
0-3 km storm-relative helicity: 461 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

520 
WUUS54 KTSA 290457
SVRTSA
OKC097-131-143-145-290545-
/O.NEW.KTSA.SV.W.0007.120229T0457Z-120229T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1057 PM CST TUE FEB 28 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MAYES COUNTY IN NORTHEAST OKLAHOMA
  SOUTHERN ROGERS COUNTY IN NORTHEAST OKLAHOMA
  CENTRAL TULSA COUNTY IN NORTHEAST OKLAHOMA
  NORTHWESTERN WAGONER COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1145 PM CST

* AT 1054 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR TULSA...
  MOVING EAST AT 60 MPH.

  STORM HAZARDS INCLUDE...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...TULSA...
  OWASSO...BROKEN ARROW...CATOOSA...VERDIGRIS...CLAREMORE...TIAWAH...
  INOLA...CHOUTEAU...PRYOR...ADAIR...LOCUST GROVE...SALINA...SPAVINAW
  STATE PARK AND PENSACOLA.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 217 AND 262.

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 3650 9507 3619 9504 3600 9603 3607 9603
      3608 9606 3616 9604 3616 9600 3626 9598
TIME...MOT...LOC 0457Z 257DEG 53KT 3611 9595

$$

1 follow-up statement

462 
WWUS54 KTSA 290521
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1121 PM CST TUE FEB 28 2012

OKC143-145-290532-
/O.CAN.KTSA.SV.W.0007.000000T0000Z-120229T0545Z/
TULSA OK-WAGONER OK-
1121 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WAGONER AND
CENTRAL TULSA COUNTIES IS CANCELLED...

LAT...LON 3627 9505 3613 9557 3614 9559 3629 9566
      3645 9519 3648 9508 3648 9507
TIME...MOT...LOC 0522Z 250DEG 56KT 3624 9551

$$

OKC097-131-290545-
/O.CON.KTSA.SV.W.0007.000000T0000Z-120229T0545Z/
MAYES OK-ROGERS OK-
1121 PM CST TUE FEB 28 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CST
FOR SOUTHEASTERN ROGERS AND CENTRAL MAYES COUNTIES...

AT 1119 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR TIAWAH...
MOVING EAST AT 65 MPH.

STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
CHOUTEAU...PRYOR...SNOWDALE STATE PARK...SALINA...STRANG...PENSACOLA
AND SPAVINAW STATE PARK.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 246 AND 257.

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...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.

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

&&

LAT...LON 3627 9505 3613 9557 3614 9559 3629 9566
      3645 9519 3648 9508 3648 9507
TIME...MOT...LOC 0522Z 250DEG 56KT 3624 9551

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 9:01 PM CST	Severe Thunderstorm Warning	TSA	Osage	44 min
Feb 28, 9:41 PM CST	Severe Thunderstorm Warning	TSA	Nowata, Osage, Pawnee, Washington	64 min
Feb 28, 10:15 PM CST	Special Weather Statement	TSA	Creek, Tulsa	30 min
Feb 28, 10:31 PM CST	Special Weather Statement	TSA	Creek, Okmulgee, Tulsa	29 min
Feb 28, 10:47 PM CST	Severe Thunderstorm Warning	TSA	Craig, Nowata, Ottawa, Washington	58 min
Feb 28, 11:31 PM CST	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes	30 min
Feb 28, 11:44 PM CST	Severe Thunderstorm Warning	TSA	Ottawa	20 min
Feb 28, 11:48 PM CST	Special Weather Statement	TSA	Wagoner	27 min
Feb 28, 11:53 PM CST	Severe Thunderstorm Warning	TSA	Delaware	52 min
Feb 28, 11:57 PM CST	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	48 min
Feb 29, 12:28 AM CST	Special Weather Statement	TSA	Pittsburg	32 min
Feb 29, 12:36 AM CST	Severe Thunderstorm Warning	TSA	Adair, Cherokee	39 min
Feb 29, 12:58 AM CST	Special Weather Statement	TSA	Latimer	32 min
Feb 29, 4:14 AM CST	Fire Weather Watch	TSA	Craig, Creek, Delaware, Mayes, Nowata, Okfuskee and 7 more	23 hr
Feb 29, 4:14 AM CST	Red Flag Warning	TSA	Craig, Nowata, Ottawa	14 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2012 Every severe thunderstorm warning in 2012

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.