Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 295, NWS Tulsa, OK

June 12, 20099 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 12, 2009, 11:16 AM CDT for 9 counties in Oklahoma. It was in force for 59 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: Jun 12, 2009, 11:16 AM CDT (16:16 UTC)
Expired: Jun 12, 2009, 12:15 PM CDT
In force: 59 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Adair County, OK, Cherokee County, OK, Creek County, OK, McIntosh County, OK, Muskogee County, OK, Okfuskee County, OK, Okmulgee County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 54 km from the middle of the area, began a volume at 16:16 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 12, 7:46 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 4.3 hours before the alert went out and 179 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: 2806 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 672 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 220 m²/s²
0-3 km storm-relative helicity: 298 m²/s²
Significant tornado parameter: 4.3
Supercell composite: 22.1

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 Jun 12, 8:09 AM CDT, 3 hours 7 minutes earlier.

Area forecast discussion, Jun 12, 8:09 AM CDT, 3 hours 7 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
809 AM CDT FRI JUN 12 2009

.DISCUSSION...
UPDATED FORECAST TO INCLUDE SEVERE THUNDERSTORM WATCH UNTIL 3 PM CDT.
ADJUSTED THE POPS SLIGHTLY AND ADDED THE POSSIBILITY OF SEVERE WORDING.
MOIST AND UNSTABLE AIR OVER EASTERN OKLAHOMA WILL CAUSE THE CONTINUATION
OF THE BOWING...LINEAR CONVECTIVE SYSTEM WHICH WILL BE ENTERING THE
NORTHWEST PORTION OF THE FORECAST AREA BY 9 AM. EXPECT A CONTINUATION TO
THE EAST WITH DEVELOPMENT ON THE SOUTH PORTION OF THE AREA TOWARDS
THE AREA OF BEST INSTABILITY. ALSO...FORWARD SPEED MAY INCREASE WITH
SHORTWAVE TO THE WEST CATCHING UP TO THE MCS AND GIVING IT A PUSH.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
AR...NONE.
&&

SHORT TERM...15
LONG TERM....22

Hazardous weather outlook, Jun 12, 5:04 AM CDT, 6 hours 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
504 AM CDT FRI JUN 12 2009

ARZ001-002-010-011-019-020-029-OKZ049-053>076-131000-
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-
504 AM CDT FRI JUN 12 2009

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

.DAY ONE...TODAY AND TONIGHT.

SEVERE THUNDERSTORM.
RISK...ELEVATED.
AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
ONSET...THIS MORNING.

AREA AT GREATEST RISK...NORTHEAST OKLAHOMA.

DISCUSSION...
AN ONGOING MCS CONTINUES TO CHURN ACROSS SOUTH-CENTRAL KANSAS...
MOVING GENERALLY SOUTHEAST. CONDITIONS ACROSS NORTHEAST OKLAHOMA
WILL BE CONDUCIVE TO CONTINUATION OF THIS MCS AS IT ENTERS THE
AREA LATER THIS MORNING. LARGE HAIL AND DAMAGING WINDS WILL BE THE
PRIMARY THREATS FROM THIS ACTIVITY.

RE-INITIATION OF STRONG THUNDERSTORMS WILL AGAIN BE POSSIBLE ACROSS
THE REGION THIS AFTERNOON AND EVENING. A PERSISTENT FRONT REMAINS DRAPED
WEST TO EAST ACROSS EASTERN OKLAHOMA AND WESTERN ARKANSAS. VERY
MOIST LOWER LEVELS... AND CONVERGENCE ALONG THE FRONT WILL CREATE
THE POSSIBILITY FOR CONVECTIVE ACTIVITY TO BREACH THE CAPPING
INVERSION WITH THE AID OF AFTERNOON HEATING. AGAIN... LARGE HAIL AND
DAMAGING WINDS WOULD BE THE PRIMARY THREATS WITH THIS ACTIVITY.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION LIKELY NEEDED.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL.
MONDAY...THUNDERSTORM POTENTIAL.
TUESDAY...NO HAZARDS.
WEDNESDAY...NO HAZARDS.
THURSDAY...NO HAZARDS.

EXTENDED DISCUSSION...
WITH SYNOPTIC CONDITIONS SLOW TO EVOLVE... THUNDERSTORM CHANCES
WILL REMAIN IN THE FORECAST AT LEAST THROUGH THE WEEKEND. SEVERE
STORMS WILL BE POSSIBLE WITH ANY CONVECTION OCCURRING WITHIN THE REGION... AS
LOWER LEVELS REMAIN MOIST AND UNSTABLE. AFTERNOON HEATING WILL
ENHANCE THE POSSIBILITY OF THUNDERSTORM DEVELOPMENT WITHIN THE AREA...
WHILE A STRONG LOW LEVEL JET WILL ENHANCE THE POSSIBILITY OF
OVERNIGHT SEVERE MCS ACTIVITY MOVING INTO THE AREA FROM THE NORTHWEST.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Local storm report, Jun 12, 10:47 AM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1047 AM CDT FRI JUN 12 2009

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

1047 AM     TSTM WND GST     2 NW PRYOR              36.33N 95.34W
06/12/2009  E65 MPH          MAYES              OK   PUBLIC

&&

KDJ

Local storm report, Jun 12, 10:51 AM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1051 AM CDT FRI JUN 12 2009

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

1035 AM     TSTM WND GST     2 WNW CLAREMORE         36.32N 95.65W
06/12/2009  M61 MPH          ROGERS             OK   MESONET

&&

KDJ

Local storm report, Jun 12, 10:53 AM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1053 AM CDT FRI JUN 12 2009

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

1040 AM     TSTM WND GST     3 SSE INOLA             36.11N 95.49W
06/12/2009  M85 MPH          ROGERS             OK   MESONET

&&

KDJ

Local storm report, Jun 12, 10:55 AM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1055 AM CDT FRI JUN 12 2009

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

1042 AM     TSTM WND DMG     1 E CLAREMORE           36.31N 95.60W
06/12/2009                   ROGERS             OK   STORM CHASER

            ESTIMATED 70 MPH WITH TREE LIMBS DOWN.

&&

KDJ

Local storm report, Jun 12, 11:11 AM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1111 AM CDT FRI JUN 12 2009

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

1050 AM     TSTM WND DMG     PRYOR                   36.31N 95.32W
06/12/2009                   MAYES              OK   EMERGENCY MNGR

            *** 1 INJ *** A TREE WAS BLOWN DOWN BY STRONG

            THUNDERSTORM WIND GUSTS. IT INJURED A WOMAN WHEN IT FELL.

&&

Local storm report, Jun 12, 11:16 AM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1116 AM CDT FRI JUN 12 2009

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

1112 AM     HAIL             KEEFETON                35.60N 95.35W
06/12/2009  E0.88 INCH       MUSKOGEE           OK   EMERGENCY MNGR

&&

KDJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 8:24 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	96 min
Jun 12, 9:32 AM CDT	Special Weather Statement	TSA	McIntosh	28 min
Jun 12, 9:33 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Nowata, Okmulgee, Osage, Pawnee, Rogers and 3 more	72 min
Jun 12, 9:46 AM CDT	Areal Flood Advisory	TSA	Osage	59 min
Jun 12, 9:52 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Pittsburg	38 min
Jun 12, 10:15 AM CDT	Areal Flood Advisory	TSA	Rogers, Tulsa	60 min
Jun 12, 10:19 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Delaware, Mayes, Muskogee, Okmulgee, Rogers and 2 more	56 min
Jun 12, 10:25 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Muskogee, Pittsburg	50 min
Jun 12, 10:35 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Muskogee, Okfuskee, Okmulgee	55 min
Jun 12, 10:46 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Tulsa	29 min
Jun 12, 10:47 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Sequoyah	58 min
Jun 12, 11:02 AM CDT	Tornado Warning	TSA	Craig, Delaware, Mayes	43 min
Jun 12, 11:06 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Muskogee, Wagoner	54 min
Jun 12, 11:10 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Sequoyah	65 min
Jun 12, 11:36 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Sequoyah	54 min
Jun 12, 11:52 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, LeFlore, McIntosh, Muskogee and 3 more	68 min
Jun 12, 12:05 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	55 min
Jun 12, 12:16 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Sequoyah	59 min
Jun 12, 11:41 AM CDT	Tornado Warning	TSA	Benton	49 min
Jun 12, 12:22 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Crawford, Franklin, Madison, Washington	68 min
Jun 12, 12:41 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	47 min
Jun 12, 1:04 PM CDT	Tornado Warning	TSA	Franklin	26 min
Jun 12, 1:24 PM CDT	Severe Thunderstorm Warning	TSA	Carroll	23 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2009 Every severe thunderstorm warning in 2009

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.