Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 145, NWS Tulsa, OK

July 8, 2012Ottawa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 8, 2012, 8:31 PM CDT for Ottawa County, Oklahoma. It was in force for 28 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
Jul 8, 2012, 8:31 PM CDT (01:31 UTC)
Expired
Jul 8, 2012, 8:59 PM CDT
In force
28 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

County Ottawa County, OK

The radar

The Tulsa radar (KINX), 95 km from the middle of the area, began a volume at 01:34 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
Jul 8, 8:34 PM CDTTSTM WND DMGMiami, OKDOWNED TREE LIMBS AND SPORADIC POWER OUTAGES IN TOWN. ESTIMATED 60 TO 70 MPH WINDS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.5 hours before the alert went out and 90 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 2012-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 156 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 2012-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 square meters per square second.1939Sfc1 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
156 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
2059 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
-6 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.

544 
WUUS54 KTSA 090131
SVRTSA
OKC115-090215-
/O.NEW.KTSA.SV.W.0145.120709T0131Z-120709T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
831 PM CDT SUN JUL 8 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OTTAWA COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 915 PM CDT

* AT 830 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 3 MILES EAST OF
  MIAMI...MOVING SOUTH AT 10 MPH.

  STORM HAZARDS INCLUDE...
  DAMAGING WIND GUSTS TO 70 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  WYANDOTTE...NARCISSA...FAIRLAND AND AFTON.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 295 AND 314.

A WIND GUST OF 71 MPH WAS REPORTED BY THE MESONET STATION AT MIAMI.

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 3667 9469 3667 9500 3693 9490 3692 9472
TIME...MOT...LOC 0131Z 004DEG 10KT 3686 9482

$$
2 follow-up statements
780 
WWUS54 KTSA 090145
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
845 PM CDT SUN JUL 8 2012

OKC115-090215-
/O.CON.KTSA.SV.W.0145.000000T0000Z-120709T0215Z/
OTTAWA OK-
845 PM CDT SUN JUL 8 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
SOUTHWESTERN OTTAWA COUNTY...

AT 838 PM CDT...A POTENTIALLY SEVERE THUNDERSTORM WAS LOCATED NEAR 
FAIRLAND...MOVING SOUTH AT 10 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...FAIRLAND
AND AFTON.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 295 AND 307.

THIS STORM PRODUCED A 71 MPH WIND GUST AT THE MESONET STATION 2 
MILES NORTHEAST OF MIAMI AT 825 PM. HOWEVER...THE STORM IS WEAKENING 
QUICKLY WITH THE LOSS OF DAYTIME HEATING. IF THIS TREND 
CONTINUES...THE WARNING MAY BE CANCELLED EARLY.

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 3685 9475 3667 9469 3667 9498 3668 9500
      3686 9490
TIME...MOT...LOC 0143Z 011DEG 10KT 3677 9484

$$
683 
WWUS54 KTSA 090159
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
859 PM CDT SUN JUL 8 2012

OKC115-090209-
/O.CAN.KTSA.SV.W.0145.000000T0000Z-120709T0215Z/
OTTAWA OK-
859 PM CDT SUN JUL 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN OTTAWA COUNTY IS
CANCELLED...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

GUSTY WINDS AND VERY HEAVY RAIN WILL STILL BE POSSIBLE WITH THIS
STORM.

LAT...LON 3685 9475 3667 9469 3667 9498 3668 9500
      3686 9490
TIME...MOT...LOC 0159Z 011DEG 10KT 3669 9486

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 7:05 PM CDTSpecial Weather StatementTSAWagoner25 min
Jul 8, 7:29 PM CDTSpecial Weather StatementTSAChoctaw31 min
Jul 8, 7:45 PM CDTSpecial Weather StatementTSADelaware30 min
Jul 8, 8:04 PM CDTSpecial Weather StatementTSAOttawa26 min
Jul 8, 8:08 PM CDTSpecial Weather StatementTSADelaware37 min
Jul 8, 9:00 PM CDTSpecial Weather StatementTSAOttawa30 min
Jul 9, 2:22 PM CDTSpecial Weather StatementTSAOkfuskee23 min
Jul 9, 3:43 PM CDTSpecial Weather StatementTSAAdair32 min
Jul 9, 4:44 PM CDTSpecial Weather StatementTSAPushmataha46 min
Jul 9, 5:22 PM CDTSpecial Weather StatementTSALeFlore23 min

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.