Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 474, NWS Tulsa, OK

August 6, 2011Tulsa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 6, 2011, 6:10 PM CDT for Tulsa County, Oklahoma. It was in force for 35 min. 4 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
Aug 6, 2011, 6:10 PM CDT (23:10 UTC)
Expired
Aug 6, 2011, 6:45 PM CDT
In force
35 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

County Tulsa County, OK

The radar

The Tulsa radar (KINX), 26 km from the middle of the area, began a volume at 23:12 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
Aug 6, 6:29 PM CDTTSTM WND GST 60Tulsa, OKTHUNDERSTORM WIND GUST AT NWS OFFICE 11TH AND 169 ESTIMATED 60 MILES PER HOUR.
Aug 6, 6:30 PM CDTTSTM WND DMG3 Nnw Broken Arrow, OKSEVERAL LARGE TREES GREATER THAN 2 INCHES IN DIAMETER SPLIT AND BLOWN DOWN AT SHILOH NEIGHBORHOOD AT BATTLE CREEK.
Aug 6, 6:32 PM CDTTSTM WND GST 704 N Broken Arrow, OKSPOTTER REPORTED 60 TO 70 MILE PER HOUR WIND GUST AND DIME HAIL AT SAVAGE PARK.
Aug 6, 6:44 PM CDTTSTM WND GST 63Jenks, OK55KT GUST MEASURED AT THE JENKS RIVERSIDE AIRPORT.

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

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 11.2 hours before the alert went out and 157 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 12:00Z on 2011-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 144 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, Lamont, OK at 12:00Z on 2011-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 square meters per square second.193958Sfc1 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
144 J/kg
Mixed-layer CIN
-473 J/kg
Mixed-layer LCL
2200 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

050 
WUUS54 KTSA 062310
SVRTSA
OKC143-062345-
/O.NEW.KTSA.SV.W.0474.110806T2310Z-110806T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
610 PM CDT SAT AUG 6 2011

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

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

* UNTIL 645 PM CDT

* AT 608 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR TULSA...  
MOVING EAST-SOUTHEAST AT 5 MPH.

  STORM HAZARDS INCLUDE...
  WIND GUSTS TO 65 MPH...

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

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 220 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 3620 9581 3616 9581 3616 9578 3598 9576
      3597 9576 3596 9603 3620 9600
TIME...MOT...LOC 2310Z 280DEG 11KT 3612 9592

$$
2 follow-up statements
757 
WWUS54 KTSA 062318
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
618 PM CDT SAT AUG 6 2011

OKC143-062345-
/O.CON.KTSA.SV.W.0474.000000T0000Z-110806T2345Z/
TULSA OK-
618 PM CDT SAT AUG 6 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
CENTRAL TULSA COUNTY...

AT 616 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR TULSA...MOVING
EAST-SOUTHEAST AT 5 MPH.  THIS STORM HAS DOWNED TREES AND POWERLINES 
IN TULSA.

STORM HAZARDS INCLUDE...
DAMAGING WIND GUSTS TO 70 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

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

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 220 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 3620 9581 3616 9581 3616 9578 3598 9576
      3597 9576 3596 9603 3620 9600
TIME...MOT...LOC 2317Z 280DEG 11KT 3612 9589

$$
049 
WWUS54 KTSA 062324
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
624 PM CDT SAT AUG 6 2011

OKC143-062345-
/O.CON.KTSA.SV.W.0474.000000T0000Z-110806T2345Z/
TULSA OK-
624 PM CDT SAT AUG 6 2011

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR
CENTRAL TULSA COUNTY...

AT 620 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER TULSA...MOVING
EAST AT 5 MPH.  A NUMBER OF REPORTS OF WIND DAMAGE ARE BEING 
RECEVIVED FROM TULSA. 

STORM HAZARDS INCLUDE...
DAMAGING WIND GUSTS TO 75 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

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

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 220 AND 232.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEEK SHELTER
IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
MOBILE HOMES AND HIGH PROFILE VEHICLES ARE ESPECIALLY SUSCEPTIBLE TO
HIGH WINDS AND MAY BE OVERTURNED.

&&

LAT...LON 3620 9581 3616 9581 3616 9578 3598 9576
      3597 9576 3596 9603 3620 9600
TIME...MOT...LOC 2323Z 280DEG 5KT 3612 9587

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 3:09 PM CDTFire Weather WatchTSACraig, Creek, McIntosh, Mayes, Muskogee, Nowata and 9 more36 hr
Aug 6, 4:33 PM CDTSevere Thunderstorm WarningTSACherokee, Mayes, Wagoner20 min
Aug 6, 5:41 PM CDTSpecial Weather StatementTSACreek49 min
Aug 6, 5:48 PM CDTSpecial Weather StatementTSATulsa27 min
Aug 6, 6:00 PM CDTSpecial Weather StatementTSAWagoner30 min
Aug 6, 6:20 PM CDTSevere Thunderstorm WarningTSACreek40 min
Aug 6, 6:27 PM CDTSpecial Weather StatementTSATulsa33 min
Aug 6, 6:35 PM CDTSevere Thunderstorm WarningTSARogers, Tulsa, Wagoner40 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2011Every severe thunderstorm warning in 2011

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.