Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 80, NWS Tulsa, OK

May 1, 2012Creek County, Tulsa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 1, 2012, 2:33 AM CDT for Creek County, Tulsa County, Oklahoma. It was in force for 27 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
May 1, 2012, 2:33 AM CDT (07:33 UTC)
Expired
May 1, 2012, 3:00 AM CDT
In force
27 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

Counties Creek County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 43 km from the middle of the area, began a volume at 07:35 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 nearest sounding before it

Lamont, OK (KLMN), launched 00:00Z, 7.6 hours before the alert went out and 146 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 2012-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2077 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 2012-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 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
2077 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1205 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
2.4
Supercell composite
16.5

Open this sounding in Storm Lab

The text

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

908 
WUUS54 KTSA 010733
SVRTSA
OKC037-143-010800-
/O.NEW.KTSA.SV.W.0080.120501T0733Z-120501T0800Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
233 AM CDT TUE MAY 1 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CREEK COUNTY IN NORTHEAST OKLAHOMA
  CENTRAL TULSA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 300 AM CDT

* AT 231 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 7 MILES WEST OF SAPULPA TO 4 MILES SOUTHWEST OF
  SAPULPA...MOVING EAST AT 45 MPH.

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

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  SAPULPA...JENKS...TULSA AND BROKEN ARROW.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 205 AND 232.

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.

&&

LAT...LON 3603 9626 3623 9586 3606 9576 3603 9577
      3594 9618
TIME...MOT...LOC 0733Z 251DEG 40KT 3604 9621 3596 9614

$$
2 follow-up statements
964 
WWUS54 KTSA 010748
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
248 AM CDT TUE MAY 1 2012

OKC037-143-010800-
/O.CON.KTSA.SV.W.0080.000000T0000Z-120501T0800Z/
CREEK OK-TULSA OK-
248 AM CDT TUE MAY 1 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT FOR
SOUTHERN TULSA AND NORTHEASTERN CREEK COUNTIES...

AT 244 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHWEST OF JENKS TO JENKS...MOVING EAST AT
45 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...TULSA AND
BROKEN ARROW.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 211 AND 232.

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.

&&

LAT...LON 3623 9586 3606 9576 3603 9577 3597 9603
      3596 9609 3608 9616
TIME...MOT...LOC 0748Z 251DEG 40KT 3609 9601 3601 9594

$$
218 
WWUS54 KTSA 010759
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
259 AM CDT TUE MAY 1 2012

OKC037-143-010808-
/O.EXP.KTSA.SV.W.0080.000000T0000Z-120501T0800Z/
CREEK OK-TULSA OK-
259 AM CDT TUE MAY 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN TULSA AND
NORTHEASTERN CREEK COUNTIES EXPIRES AT 300 AM CDT...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

GUSTY WINDS TO 40 MPH AND BRIEF HEAVY RAIN WILL STILL BE POSSIBLE 
WITH THIS AREA OF STORMS.

LAT...LON 3623 9586 3606 9576 3603 9577 3597 9603
      3596 9609 3608 9616
TIME...MOT...LOC 0758Z 251DEG 40KT 3613 9588 3605 9581

$$

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, 10:28 PM CDTSevere Thunderstorm WarningTSACraig62 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, 2:56 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.