Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 369, NWS Tulsa, OK

July 13, 2006LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 13, 2006, 5:19 PM CDT for LeFlore County, Oklahoma. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 13, 2006, 5:19 PM CDT (22:19 UTC)
Expired: Jul 13, 2006, 6:17 PM CDT
In force: 58 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 53 km from the middle of the area, began a volume at 22:20 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

Springfield, MO (KSGF), launched 12:00Z, 10.3 hours before the alert went out and 237 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: 379 J/kg
Mixed-layer CIN: -166 J/kg
Mixed-layer LCL: 1691 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 13, 4:56 PM CDT, 23 minutes earlier.

Area forecast discussion, Jul 13, 4:56 PM CDT, 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
456 PM CDT THU JUL 13 2006

.MESOSCALE UPDATE...
SEVERE THUNDERSTORM CLUSTER MOVING ACROSS LATIMER COUNTY
IS BEING FORCED ALONG BOTH BY ITS COLD POOL AND THE TENDANCY
TO DEVELOP NEW CELLS ALONG A WEAK SURFACE BOUNDARY THAT
EXTENDS FROM THE CLUSTER INTO SOUTHERN LE FLORE COUNTY.
INSTABILITY DECREASES SOUTHWARD FROM THE ACTIVITY OWING IN
LARGE PART TO LOWER SURFACE DEW POINTS...SO THE SOUTHERN
PROGRESS OF THE STORMS IS IN DOUBT.  IT SEEMS LIKELY
THAT NEW CELLS WILL CONTINUE TO DEVELOP FROM THE EXISTING
ACTIVITY INTO SOUTHERN LE FLORE COUNTY DOWN A WEAK SURFACE
BOUNDARY.

THE ACTIVITY MAY WEAKEN AS IT MOVES TOWARD NORTHERN
PUSHMATAHA COUNTY...HOWEVER EVEN A WEAK CONVECTIVE CELL
COULD PRODUCE A DAMAGING DOWNBURST IN SOUTHERN LATIMER
AND PUSHMATAHA COUNTIES GIVEN THE LARGE SURFACE TEMPERATURE
AND DEW POINT SPREADS.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...EXCESSIVE HEAT WARNING FROM 1 PM FRIDAY TO 7 PM MONDAY FOR
     OKZ049-OKZ053-OKZ073-OKZ074-OKZ075-OKZ076.

     EXCESSIVE HEAT WATCH FROM 1 PM FRIDAY TO 7 PM MONDAY FOR OKZ054-
     OKZ055-OKZ056-OKZ057-OKZ058-OKZ059-OKZ060-OKZ061-OKZ062-
     OKZ063-OKZ064-OKZ065-OKZ066-OKZ067-OKZ068-OKZ069-OKZ070-
     OKZ071-OKZ072.

AR...EXCESSIVE HEAT WATCH FROM 1 PM FRIDAY TO 7 PM MONDAY FOR ARZ019-
     ARZ020-ARZ029.

&&

Hazardous weather outlook, Jul 13, 4:37 PM CDT, 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
437 PM CDT THU JUL 13 2006

ARZ001-002-010-011-019-020-029-OKZ049-053>076-141000-
ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK-
CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK-
LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK-
OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK-
PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK-
WASHINGTON OK-WASHINGTON AR-
437 PM CDT THU JUL 13 2006

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.
SEVERE THUNDERSTORM.
	RISK...LIMITED
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING ACROSS SOUTHEAST OKLAHOMA...MAINLY AFTER MIDNIGHT
                ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS
DANGEROUS HEAT.
	RISK...LIMITED.
        AREA...SOUTHEAST OKLAHOMA.
        ONSET...ONGOING.

DISCUSSION...
ISOLATED SEVERE THUNDERSTORMS WILL REMAIN POSSIBLE THIS AFTERNOON
ACROSS SOUTHEAST OKLAHOMA WITH A RISK OF DAMAGING DOWNBURST WINDS
WITH THE STRONGEST STORMS. AS THE LOCALIZED UPPER DISTURBANCE MOVES
EAST THIS AFTERNOON AND EVENING...ACTIVITY ASSOCIATED WITH THIS
FEATURE SHOULD DIMINISH WITH THE LOSS OF DAYTIME HEATING.

ORGANIZED THUNDERSTORMS ARE ONGOING ACROSS NORTHERN KANSAS AND
SOUTHEAST NEBRASKA. LATER TONIGHT...THESE STORMS WILL ADVANCE SOUTH
AND ARE LIKELY TO MOVE AT LEAST AS FAR SOUTH AS NORTHEAST OKLAHOMA
AND NORTHWEST ARKANSAS BEFORE WEAKENING LATE TONIGHT. DAMAGING WINDS
TO 70 MILES AN HOUR WILL BE POSSIBLE WITH THESE STORMS.

TEMPERATURES WILL REACH OR EXCEED 100 DEGREES IN SOUTHEAST
OKLAHOMA THIS AFTERNOON WITH HEAT INDICES APPROACHING 105 IN SOME
PLACES FOR A COUPLE HOURS.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED....ESPECIALLY AFTER MIDNIGHT
TONIGHT IN NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...THUNDERSTORM POTENTIAL...DANGEROUS HEAT POTENTIAL.
SATURDAY THROUGH WEDNESDAY...DANGEROUS HEAT POTENTIAL.

EXTENDED DISCUSSION...
THUNDERSTORM CHANCES CONTINUE INTO FRIDAY THOUGH CHANCES WILL
CONTINUE TO DECREASE INTO THE WEEKEND. CONCERNS ARE INCREASING
FOR A PROLONGED PERIOD OF AFTERNOON HEAT INDICES ABOVE 105
DEGREES...ALONG WITH WARM OVERNIGHT LOW TEMPERATURES. THESE
CONDITIONS WILL BE CLOSELY MONITORED AND DANGEROUS HEAT RELATED
ADVISORIES OR WARNINGS MAY BE REQUIRED.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
EXCESSIVE HEAT RELATED IMPACTS ARE POSSIBLE...AND LATER FORECASTS
SHOULD BE CLOSELY MONITORED FOR ASSOCIATED WARNINGS OR ADVISORIES.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL TABULAR AND GRAPHICAL
INFORMATION.

In the hours before

Local storm report, Jul 13, 1:06 PM CDT, 4 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
106 PM CDT THU JUL 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1010 PM     TSTM WND DMG     10 NNE OKESA            36.85N 96.07W
07/11/2006                   OSAGE              OK   PUBLIC

            LARGE TREE LIMBS DOWN

1020 PM     TSTM WND DMG     BARTLESVILLE            36.75N 95.98W
07/11/2006                   WASHINGTON         OK   EMERGENCY MNGR

            TREES DOWN

1026 PM     TSTM WND GST     7 W NOWATA              36.70N 95.76W
07/11/2006  E60.00 MPH       NOWATA             OK   PUBLIC

&&

RBD

Local storm report, Jul 13, 1:24 PM CDT, 3 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
124 PM CDT THU JUL 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0704 PM     TSTM WND DMG     PROCTOR                 35.97N 94.78W
07/10/2006                   ADAIR              OK   PUBLIC

            LARGE TREE LIMB DOWN...BLOCKING ROADWAY.

&&

NMK

Local storm report, Jul 13, 1:30 PM CDT, 3 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
130 PM CDT THU JUL 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0509 PM     TSTM WND DMG     9 WSW OKMULGEE          35.57N 96.11W
07/10/2006                   OKMULGEE           OK   PUBLIC

            TOPS OF TREES 6 TO 8 INCHES IN DIAMETER BLOWN
            DOWN...ALONG WITH OTHER TREE LIMBS IN OKMULGEE STATE
            PARK.

&&

NMK

Local storm report, Jul 13, 1:44 PM CDT, 3 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
144 PM CDT THU JUL 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0417 PM     TSTM WND DMG     2 NE SPERRY             36.32N 95.97W
07/10/2006                   TULSA              OK   PUBLIC

            NUMEROUS TREES AND TREE LIMBS DOWN BETWEEN HWYS 11 AND 75
            AND BETWEEN 96TH AND 116TH STREETS NORTH.

&&

NMK

Local storm report, Jul 13, 5:11 PM CDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 2:48 PM CDT	Excessive Heat Watch	TSA	Adair, Cherokee, Craig, Creek, Delaware, McIntosh and 11 more	38 hr
Jul 13, 2:48 PM CDT	Excessive Heat Warning	TSA	Choctaw, Haskell, Latimer, Pittsburg, Pushmataha	38 hr
Jul 13, 4:01 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg	59 min
Jul 13, 5:02 PM CDT	Severe Thunderstorm Warning	TSA	Latimer	58 min
Jul 12, 7:12 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Sebastian	63 min
Jul 12, 7:50 PM CDT	Severe Thunderstorm Warning	TSA	Franklin	55 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2006 Every severe thunderstorm warning in 2006

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.