Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 8, NWS Tulsa, OK

February 28, 2012Craig County, Delaware County, Mayes County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Feb 28, 2012, 11:31 PM CST for Craig County, Delaware County, Mayes County, Oklahoma. It was in force for 30 min. 1 report 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, 11:31 PM CST (05:31 UTC)
Expired
Feb 29, 2012, 12:01 AM CST
In force
30 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

Counties Craig County, OK, Delaware County, OK, Mayes County, OK

The radar

The Tulsa radar (KINX), 62 km from the middle of the area, began a volume at 05:33 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.

What was reported inside it

TimeReportWhereRemark
Feb 28, 11:46 PM CSTTSTM WND GST 605 Sw Grove, 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.

IssuedProductOfficeLasted
Feb 28, 8:10 PM CSTTornado WatchSPC5 hr
Feb 28, 10:30 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.5 hours before the alert went out and 117 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2012-02-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 75 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2012-02-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 482 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
75 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
595 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
482 m²/s²
0-3 km storm-relative helicity
563 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

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

519 
WUUS54 KTSA 290531
SVRTSA
OKC035-041-097-290615-
/O.NEW.KTSA.SV.W.0008.120229T0531Z-120229T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1131 PM CST TUE FEB 28 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA
  NORTHWESTERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  NORTHEASTERN MAYES COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1215 AM CST

* AT 1129 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR ADAIR...
  MOVING EAST AT 35 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  PENSACOLA...SPAVINAW STATE PARK...SPAVINAW...LANGLEY...CHEROKEE
  STATE PARK...DISNEY...KETCHUM...CHLOETA...CLEORA...BERNICE...
  BERNICE STATE PARK AND JAY.

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 3667 9489 3641 9472 3637 9527 3644 9531
TIME...MOT...LOC 0531Z 256DEG 32KT 3643 9525

$$
3 follow-up statements
215 
WWUS54 KTSA 290544
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1144 PM CST TUE FEB 28 2012

OKC035-041-097-290615-
/O.CON.KTSA.SV.W.0008.000000T0000Z-120229T0615Z/
CRAIG OK-DELAWARE OK-MAYES OK-
1144 PM CST TUE FEB 28 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CST
FOR NORTHEASTERN MAYES...NORTHWESTERN DELAWARE AND SOUTHEASTERN CRAIG
COUNTIES...

AT 1142 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR LANGLEY...
MOVING EAST AT 35 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...LANGLEY...
CHEROKEE STATE PARK...DISNEY LITTLE BLUE STATE PARK...DISNEY...
KETCHUM...CHLOETA...CLEORA...BERNICE...BERNICE STATE PARK...ZENA AND
JAY.

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 3641 9508 3650 9512 3667 9489 3641 9472
TIME...MOT...LOC 0544Z 256DEG 32KT 3646 9506

$$
179 
WWUS54 KTSA 290554
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1154 PM CST TUE FEB 28 2012

OKC035-097-290604-
/O.CAN.KTSA.SV.W.0008.000000T0000Z-120229T0615Z/
CRAIG OK-MAYES OK-
1154 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MAYES AND
SOUTHEASTERN CRAIG COUNTIES IS CANCELLED...

LAT...LON 3641 9472 3641 9500 3655 9501 3667 9489
TIME...MOT...LOC 0554Z 256DEG 32KT 3652 9484

$$

OKC041-290615-
/O.CON.KTSA.SV.W.0008.000000T0000Z-120229T0615Z/
DELAWARE OK-
1154 PM CST TUE FEB 28 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CST
FOR NORTHWESTERN DELAWARE COUNTY...

AT 1150 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR ZENA...MOVING
EAST AT 35 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...JAY.

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 3641 9472 3641 9500 3655 9501 3667 9489
TIME...MOT...LOC 0554Z 256DEG 32KT 3652 9484

$$
096 
WWUS54 KTSA 290601
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1201 AM CST WED FEB 29 2012

OKC041-290611-
/O.CAN.KTSA.SV.W.0008.000000T0000Z-120229T0615Z/
DELAWARE OK-
1201 AM CST WED FEB 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN DELAWARE COUNTY
IS CANCELLED...

THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA AND WEAKENED BELOW
SEVERE LIMITS...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

LAT...LON 3641 9472 3641 9500 3655 9501 3667 9489
TIME...MOT...LOC 0601Z 256DEG 32KT 3653 9476

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 28, 9:01 PM CSTSevere Thunderstorm WarningTSAOsage44 min
Feb 28, 9:41 PM CSTSevere Thunderstorm WarningTSANowata, Osage, Pawnee, Washington64 min
Feb 28, 10:15 PM CSTSpecial Weather StatementTSACreek, Tulsa30 min
Feb 28, 10:31 PM CSTSpecial Weather StatementTSACreek, Okmulgee, Tulsa29 min
Feb 28, 10:47 PM CSTSevere Thunderstorm WarningTSACraig, Nowata, Ottawa, Washington58 min
Feb 28, 10:57 PM CSTSevere Thunderstorm WarningTSAMayes, Rogers, Tulsa, Wagoner48 min
Feb 28, 11:44 PM CSTSevere Thunderstorm WarningTSAOttawa20 min
Feb 28, 11:48 PM CSTSpecial Weather StatementTSAWagoner27 min
Feb 28, 11:53 PM CSTSevere Thunderstorm WarningTSADelaware52 min
Feb 28, 11:57 PM CSTSevere Thunderstorm WarningTSACherokee, Muskogee, Wagoner48 min
Feb 29, 12:28 AM CSTSpecial Weather StatementTSAPittsburg32 min
Feb 29, 12:36 AM CSTSevere Thunderstorm WarningTSAAdair, Cherokee39 min
Feb 29, 12:58 AM CSTSpecial Weather StatementTSALatimer32 min
Feb 29, 4:14 AM CSTFire Weather WatchTSACraig, Creek, Delaware, Mayes, Nowata, Okfuskee and 7 more23 hr
Feb 29, 4:14 AM CSTRed Flag WarningTSACraig, Nowata, Ottawa14 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2012Every 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.