Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 252, NWS Tulsa, OK

August 9, 2013Latimer County, LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 9, 2013, 4:32 PM CDT for Latimer County, LeFlore County, Oklahoma. It was in force for 28 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: Aug 9, 2013, 4:32 PM CDT (21:32 UTC)
Expired: Aug 9, 2013, 5:00 PM CDT
In force: 28 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Latimer County, OK, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 59 km from the middle of the area, began a volume at 21:35 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

Norman, OK (KOUN), launched 12:00Z, 9.5 hours before the alert went out and 228 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1002 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 800 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

131 
WUUS54 KTSA 092132
SVRTSA
OKC077-079-092200-
/O.NEW.KTSA.SV.W.0252.130809T2132Z-130809T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
432 PM CDT FRI AUG 9 2013

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LATIMER COUNTY IN SOUTHEAST OKLAHOMA...
  CENTRAL LE FLORE COUNTY IN SOUTHEAST OKLAHOMA...

* UNTIL 500 PM CDT

* AT 430 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTHWEST
  OF FANSHAWE...MOVING EAST AT 20 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...FANSHAWE
  AND POTEAU.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3495 9504 3506 9497 3506 9493 3509 9492
      3509 9456 3486 9489
TIME...MOT...LOC 2132Z 287DEG 18KT 3502 9494

$$

1 follow-up statement

593 
WWUS54 KTSA 092151
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
451 PM CDT FRI AUG 9 2013

OKC077-092201-
/O.CAN.KTSA.SV.W.0252.000000T0000Z-130809T2200Z/
LATIMER OK-
451 PM CDT FRI AUG 9 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LATIMER COUNTY IS
CANCELLED...

LAT...LON 3494 9491 3506 9491 3506 9493 3508 9489
      3509 9456 3486 9489
TIME...MOT...LOC 2151Z 287DEG 18KT 3499 9483

$$

OKC079-092200-
/O.CON.KTSA.SV.W.0252.000000T0000Z-130809T2200Z/
LE FLORE OK-
451 PM CDT FRI AUG 9 2013

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
CENTRAL LE FLORE COUNTY...

AT 450 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR FANSHAWE...
MOVING EAST AT 20 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...POTEAU.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3494 9491 3506 9491 3506 9493 3508 9489
      3509 9456 3486 9489
TIME...MOT...LOC 2151Z 287DEG 18KT 3499 9483

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 1:08 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Pawnee	52 min
Aug 9, 1:29 AM CDT	Special Weather Statement	TSA	Okmulgee	46 min
Aug 9, 1:42 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa, Washington	63 min
Aug 9, 2:18 AM CDT	Areal Flood Advisory	TSA	Creek, Osage, Pawnee, Tulsa	117 min
Aug 9, 2:34 AM CDT	Special Weather Statement	TSA	Rogers	56 min
Aug 9, 3:20 AM CDT	Special Weather Statement	TSA	Craig, Nowata	40 min
Aug 9, 4:57 AM CDT	Special Weather Statement	TSA	Okfuskee	33 min
Aug 9, 5:02 AM CDT	Areal Flood Advisory	TSA	Haskell	88 min
Aug 9, 5:21 AM CDT	Areal Flood Advisory	TSA	Craig, Ottawa	3 hr
Aug 9, 5:43 AM CDT	Areal Flood Advisory	TSA	LeFlore, Sequoyah	2 hr
Aug 9, 5:49 AM CDT	Special Weather Statement	TSA	McIntosh, Muskogee	41 min
Aug 9, 9:05 AM CDT	River Flood Advisory	TSA	Muskogee	4 days
Aug 9, 4:58 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	47 min
Aug 9, 5:28 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2013 Every severe thunderstorm warning in 2013

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.