Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 47, NWS Tulsa, OK

April 15, 2012Creek County, Osage County, Pawnee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 15, 2012, 4:43 AM CDT for Creek County, Osage County, Pawnee County, Oklahoma. It was in force for 62 min. 5 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
Apr 15, 2012, 4:43 AM CDT (09:43 UTC)
Expired
Apr 15, 2012, 5:45 AM CDT
In force
62 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

Counties Creek County, OK, Osage County, OK, Pawnee County, OK

The radar

The Tulsa radar (KINX), 104 km from the middle of the area, began a volume at 09:46 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
Apr 15, 4:54 AM CDTTSTM WND GST 583 Ene Pawnee, OKOKLAHOMA MESONET
Apr 15, 5:04 AM CDTTSTM WND DMGRalston, OK3 INCH TREE LIMBS DOWN. TIME IS RADAR ESTIMATED.
Apr 15, 5:10 AM CDTTSTM WND DMGFairfax, OK1-2 INCH TREE LIMBS DOWN. TIME IS RADAR ESTIMATED.
Apr 15, 5:18 AM CDTTSTM WND GST 654 W Pawhuska, OKNEAR THE AIRPORT.
Apr 15, 5:25 AM CDTTSTM WND GST 60Pawhuska, 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
Apr 15, 1:37 AM CDTTornado WatchSPC5 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 9.7 hours before the alert went out and 74 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, Lamont, OK at 00:00Z on 2012-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2195 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lamont, OK at 00:00Z on 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 335 square meters per square second.1939587897Sfc1 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
2195 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
335 m²/s²
0-3 km storm-relative helicity
436 m²/s²
Significant tornado parameter
5.9
Supercell composite
19.0

Open this sounding in Storm Lab

The text

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

328 
WUUS54 KTSA 150943
SVRTSA
OKC037-113-117-151045-
/O.NEW.KTSA.SV.W.0047.120415T0943Z-120415T1045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
443 AM CDT SUN APR 15 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CREEK COUNTY IN NORTHEAST OKLAHOMA
  OSAGE COUNTY IN NORTHEAST OKLAHOMA
  PAWNEE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 545 AM CDT

* AT 438 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 13 MILES WEST OF PAWNEE TO 33 MILES SOUTHWEST OF
  DRUMRIGHT...MOVING NORTHEAST AT 60 MPH.

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

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  PAWNEE...RALSTON...BURBANK...QUAY...FAIRFAX...SKEDEE...MARAMEC...
  SHIDLER...DRUMRIGHT...BLACKBURN...OILTON...JENNINGS...HALLETT...
  FORAKER...TERLTON...CLEVELAND...PEARSONIA...OSAGE...HOMINY...
  PAWHUSKA...WYNONA...WESTPORT...WALNUT CREEK STATE PARK...
  BIGHEART...OSAGE HILLS STATE PARK...BARNSDALL...OKESA...AVANT AND
  HULAH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. TAKE COVER
ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3700 9602 3642 9600 3591 9662 3615 9663
      3616 9683 3624 9682 3624 9692 3633 9693
      3633 9704 3649 9704 3655 9697 3656 9691
      3660 9691 3701 9641
TIME...MOT...LOC 0943Z 224DEG 52KT 3647 9696 3572 9696

$$
1 follow-up statement
349 
WWUS54 KTSA 151011
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
511 AM CDT SUN APR 15 2012

OKC037-113-117-151045-
/O.CON.KTSA.SV.W.0047.000000T0000Z-120415T1045Z/
CREEK OK-OSAGE OK-PAWNEE OK-
511 AM CDT SUN APR 15 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 AM CDT FOR
PAWNEE...EASTERN OSAGE AND NORTHWESTERN CREEK COUNTIES...

AT 510 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM PEARSONIA TO DRUMRIGHT...MOVING NORTHEAST AT 60 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
JENNINGS...OILTON...PEARSONIA...SILVER CITY...TERLTON...CLEVELAND...
HOMINY...OSAGE...PAWHUSKA...WYNONA...BIGHEART...WESTPORT...
PERSHING...NELAGONEY...WALNUT CREEK STATE PARK...OSAGE HILLS STATE
PARK...TALLANT...WAH SHA SHE STATE PARK...OKESA...BARNSDALL AND
HULAH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. TAKE COVER
ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3615 9663 3615 9665 3678 9653 3701 9626
      3700 9602 3682 9601 3636 9610 3593 9662
TIME...MOT...LOC 1011Z 224DEG 52KT 3676 9647 3601 9661

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 12:40 AM CDTWind AdvisoryTSACreek, Okfuskee, Okmulgee, Pawnee, Tulsa, Washington3 hr
Apr 15, 3:41 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee64 min
Apr 15, 5:05 AM CDTSpecial Weather StatementTSACreek55 min
Apr 15, 5:30 AM CDTSevere Thunderstorm WarningTSACreek, Nowata, Osage, Pawnee, Rogers, Tulsa and 1 more60 min
Apr 15, 5:47 AM CDTSpecial Weather StatementTSAOkfuskee, Okmulgee, Rogers, Tulsa58 min
Apr 15, 5:51 AM CDTTornado WarningTSANowata, Osage, Rogers, Tulsa, Washington24 min
Apr 15, 6:22 AM CDTSevere Thunderstorm WarningTSACraig, Mayes, Nowata, Ottawa, Rogers53 min
Apr 15, 6:41 AM CDTSpecial Weather StatementTSAMayes, Okmulgee, Wagoner64 min
Apr 15, 6:43 AM CDTSpecial Weather StatementTSAMcIntosh, Pittsburg62 min
Apr 15, 7:41 AM CDTSpecial Weather StatementTSADelaware34 min
Apr 15, 7:44 AM CDTSpecial Weather StatementTSAMcIntosh, Muskogee, Pittsburg, Wagoner31 min
Apr 15, 8:13 AM CDTSpecial Weather StatementTSACherokee, Delaware, Muskogee62 min
Apr 15, 8:14 AM CDTSpecial Weather StatementTSAHaskell, Latimer, Pittsburg, Pushmataha, Sequoyah61 min
Apr 15, 9:13 AM CDTSevere Thunderstorm WarningTSAAdair, Cherokee, Muskogee62 min
Apr 15, 9:16 AM CDTTornado WarningTSAAdair, Cherokee29 min
Apr 15, 9:42 AM CDTTornado WarningTSAAdair33 min
Apr 15, 11:28 AM CDTSpecial Weather StatementTSALeFlore62 min
Apr 15, 12:42 PM CDTRiver Flood WarningTSARogers, Tulsa7 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.