Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 70, NWS Tulsa, OK

April 30, 2012Craig County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 30, 2012, 10:28 PM CDT for Craig County, Oklahoma. It was in force for 62 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 30, 2012, 10:28 PM CDT (03:28 UTC)
Expired
Apr 30, 2012, 11:30 PM CDT
In force
62 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

County Craig County, OK

The radar

The Tulsa radar (KINX), 96 km from the middle of the area, began a volume at 03:30 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.

IssuedProductOfficeLasted
Apr 30, 7:30 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.5 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 2012-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 202 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, Springfield, MO at 00:00Z on 2012-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.19395878Sfc1 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
202 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1176 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

966 
WUUS54 KTSA 010328
SVRTSA
OKC035-010430-
/O.NEW.KTSA.SV.W.0070.120501T0328Z-120501T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1028 PM CDT MON APR 30 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CRAIG COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1130 PM CDT

* AT 1026 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HOLLOW...
  MOVING NORTHEAST AT 25 MPH.

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

* THIS STORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS.

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 3699 9501 3699 9504 3698 9503 3697 9504
      3695 9500 3680 9525 3688 9542 3701 9538
      3700 9501
TIME...MOT...LOC 0328Z 230DEG 20KT 3687 9525

$$
1 follow-up statement
196 
WWUS54 KTSA 010346
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1046 PM CDT MON APR 30 2012

OKC035-010430-
/O.CON.KTSA.SV.W.0070.000000T0000Z-120501T0430Z/
CRAIG OK-
1046 PM CDT MON APR 30 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR NORTHERN CRAIG COUNTY...

AT 1043 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES WEST OF HOLLOW TO HOLLOW...MOVING NORTHEAST AT
20 MPH.

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

THIS STORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS.

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 3700 9501 3699 9501 3699 9504 3698 9503
      3697 9504 3695 9500 3683 9525 3688 9542
      3701 9538
TIME...MOT...LOC 0346Z 233DEG 16KT 3693 9536 3694 9517

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 7:03 PM CDTSpecial Weather StatementTSANowata27 min
Apr 30, 7:08 PM CDTSevere Thunderstorm WarningTSANowata, Washington52 min
Apr 30, 7:18 PM CDTSpecial Weather StatementTSAMuskogee42 min
Apr 30, 7:54 PM CDTSevere Thunderstorm WarningTSANowata66 min
Apr 30, 8:02 PM CDTTornado WarningTSANowata43 min
Apr 30, 8:21 PM CDTTornado WarningTSANowata39 min
Apr 30, 8:37 PM CDTTornado WarningTSANowata23 min
Apr 30, 8:53 PM CDTTornado WarningTSACraig, Nowata37 min
Apr 30, 8:58 PM CDTFlash Flood WarningTSACraig, Nowata3 hr
Apr 30, 9:01 PM CDTSevere Thunderstorm WarningTSANowata, Washington44 min
Apr 30, 9:08 PM CDTSevere Thunderstorm WarningTSACraig, Nowata67 min
Apr 30, 9:29 PM CDTSevere Thunderstorm WarningTSACraig15 min
Apr 30, 9:43 PM CDTSevere Thunderstorm WarningTSACraig, Nowata62 min
Apr 30, 9:58 PM CDTTornado WarningTSACraig32 min
Apr 30, 10:34 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee71 min
Apr 30, 11:00 PM CDTSevere Thunderstorm WarningTSACraig60 min
Apr 30, 11:03 PM CDTTornado WarningTSAOsage, Pawnee42 min
Apr 30, 11:11 PM CDTFlash Flood WarningTSAOsage, Pawnee4 hr
Apr 30, 11:23 PM CDTTornado WarningTSAOsage, Pawnee37 min
Apr 30, 11:42 PM CDTSpecial Weather StatementTSACreek48 min
Apr 30, 11:42 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee63 min
Apr 30, 11:51 PM CDTFlash Flood WarningTSACraig, Nowata3 hr
Apr 30, 11:58 PM CDTSevere Thunderstorm WarningTSACraig32 min
May 1, 12:19 AM CDTSevere Thunderstorm WarningTSANowata, Osage, Rogers, Tulsa, Washington56 min
May 1, 12:26 AM CDTSpecial Weather StatementTSATulsa49 min
May 1, 12:47 AM CDTTornado WarningTSANowata9 min
May 1, 12:49 AM CDTSevere Thunderstorm WarningTSACraig, Nowata, Washington56 min
May 1, 12:56 AM CDTSpecial Weather StatementTSAOkfuskee49 min
May 1, 12:59 AM CDTSevere Thunderstorm WarningTSACraig, Delaware, Mayes, Nowata, Ottawa, Rogers76 min
May 1, 1:17 AM CDTSevere Thunderstorm WarningTSAMayes, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner58 min
May 1, 1:38 AM CDTSpecial Weather StatementTSAOkfuskee, Okmulgee37 min
May 1, 1:52 AM CDTSevere Thunderstorm WarningTSACherokee, Delaware, Mayes53 min
May 1, 1:53 AM CDTFlash Flood WarningTSACraig, Nowata, Ottawa, Rogers5 hr
May 1, 2:10 AM CDTSpecial Weather StatementTSACherokee, McIntosh, Muskogee50 min
May 1, 2:21 AM CDTSpecial Weather StatementTSAPittsburg39 min
May 1, 2:30 AM CDTSpecial Weather StatementTSACreek, Tulsa, Wagoner45 min
May 1, 2:33 AM CDTSevere Thunderstorm WarningTSACreek, Tulsa27 min
May 1, 2:56 AM CDTSpecial Weather StatementTSAAdair49 min
May 1, 3:02 AM CDTSpecial Weather StatementTSAHaskell, Sequoyah43 min
May 1, 3:28 AM CDTSevere Thunderstorm WarningTSAAdair47 min
May 1, 3:30 AM CDTSpecial Weather StatementTSALatimer, LeFlore45 min
May 1, 6:35 AM CDTAreal Flood WarningTSACraig, Nowata, Ottawa10 hr
May 1, 8:33 AM CDTRiver Flood WarningTSAOttawa25 hr
May 1, 4:28 PM CDTAreal Flood WarningTSACraig, Nowata, Osage, Ottawa, Washington24 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.