Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 171, NWS Tulsa, OK

May 2, 2009Pushmataha County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 2, 2009, 11:32 AM CDT for Pushmataha County, Oklahoma. It was in force for 18 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: May 2, 2009, 11:32 AM CDT (16:32 UTC)
Expired: May 2, 2009, 11:50 AM CDT
In force: 18 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

County Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 134 km from the middle of the area, began a volume at 16:35 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, 4.5 hours before the alert went out and 205 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 450 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 156 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 May 2, 10:27 AM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, May 2, 10:27 AM CDT, 1 hour 5 minutes before

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Hazardous weather outlook, May 2, 4:58 AM CDT, 6 hours 34 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
458 AM CDT SAT MAY 2 2009

ARZ001-002-010-011-019-020-029-OKZ049-053>076-031000-
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-
458 AM CDT SAT MAY 2 2009

...FLASH FLOODING AND RIVER FLOODING TO REMAIN A SIGNIFICANT THREAT
TODAY ALONG WITH A CHANCE OF SEVERE STORMS...

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...ONGOING.

AREA AT GREATEST RISK...SOUTHEAST OKLAHOMA AND WEST CENTRAL
                                ARKANSAS.

FLASH FLOOD.
RISK...SIGNIFICANT.
AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
ONSET...ONGOING.

HEAVY RAIN.
RISK...SIGNIFICANT.
AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
ONSET...ONGOING.

DISCUSSION...
FLASH FLOODING AND RIVER FLOODING WILL BE THE MAIN HAZARDS ONCE
AGAIN TODAY...AS ANOTHER ROUND OF WIDESPREAD HEAVY RAINFALL IS
EXPECTED. SCATTERED THUNDERSTORMS ARE CURRENTLY ONGOING ACROSS
EASTERN OKLAHOMA AND NORTHWEST ARKANSAS...WITH ISOLATED HEAVY RAIN
POSSIBLE THROUGH THE MORNING. IN ADDITION...A LARGER COMPLEX OF
THUNDERSTORMS HAS DEVELOPED THIS MORNING ACROSS WEST CENTRAL AND
INTO PARTS OF CENTRAL OKLAHOMA. THIS COMPLEX WILL CONTINUE TO MOVE
TO THE EAST THROUGH THE MORNING HOURS...BRINGING MORE WIDESPREAD
HEAVY RAIN TO THE REGION THROUGH EARLY AFTERNOON. ADDITIONAL
THUNDERSTORM DEVELOPMENT WILL OCCUR DURING THE AFTERNOON AND
EVENING AS AN UPPER LEVEL DISTURBANCE MOVES THROUGH THE SOUTHERN
PLAINS. SOME PORTIONS OF THE AREA...ESPECIALLY NORTHEAST
OKLAHOMA...SAW GREATER THAN 4 INCHES OF RAIN YESTERDAY...LEAVING
ALREADY SATURATED GROUND AND SWOLLEN RIVERS. ADDITIONAL HEAVY
RAIN WILL LIKELY LEAD TO ADDITIONAL FLASH FLOODING AND RIVER
FLOODING PROBLEMS TODAY. RAINFALL TOTALS OF 2 TO 4 INCHES CAN BE
EXPECTED THROUGH EARLY SUNDAY MORNING...WITH LOCALLY HIGHER
AMOUNTS. A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY
AFTERNOON FOR ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.

A SEVERE WEATHER THREAT WILL ALSO EXIST THROUGH THIS EVENING
ACROSS ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. THE
GREATEST THREAT WILL BE ALONG AND SOUTH OF THE COLD FRONT ACROSS
SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS. LARGE HAIL AND
DAMAGING WINDS WILL BE THE PRIMARY CONCERNS.

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

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

EXTENDED DISCUSSION...
THUNDERSTORMS ARE EXPECTED TO CONTINUE INTO SUNDAY BEFORE THE RAIN
BRIEFLY SUBSIDES FOR THE BEGINNING OF THE WEEK. ADDITIONAL
THUNDERSTORM CHANCES WILL REMAIN THROUGH THE MIDDLE TO LATTER PART
OF NEXT WEEK...AS THE REGION REMAINS IN ZONAL UPPER LEVEL FLOW
CONDUCIVE TO PERIODIC UPPER LEVEL DISTURBANCES.

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

In the hours before

Special weather statement, May 2, 6:22 AM CDT, 5 hours 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
622 AM CDT SAT MAY 2 2009

OKZ054>064-067>069-021330-
OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-TULSA-ROGERS-MAYES-
DELAWARE-CREEK-WAGONER-CHEROKEE-ADAIR-
INCLUDING THE CITIES OF...PAWHUSKA...BARTLESVILLE...NOWATA...
VINITA...MIAMI...PAWNEE...TULSA...CLAREMORE...PRYOR...JAY...
BRISTOW...WAGONER...TAHLEQUAH...STILWELL
622 AM CDT SAT MAY 2 2009

...LARGE AREA OF RAIN WITH EMBEDDED THUNDERSTORMS MOVING INTO
AREA THAT EXPERIENCED FLOODING RAINS ON FRIDAY...

A LARGE AREA OF RAIN...WITH STRONG EMBEDDED THUNDERSTORMS...
WAS MOVING INTO NORTHEAST OKLAHOMA JUST BEFORE SUNRISE AND
WILL BE AFFECTING THE SAME AREA THAT EXPERIENCED FOUR TO AROUND
EIGHT INCHES OF RAIN YESTERDAY.

THE RAIN WAS MOVING MUCH MORE QUICKLY THAN ON FRIDAY SO A REPEAT
OF THE HEAVY RAIN EVENT ON FRIDAY IS UNLIKELY. BUT ONE HALF TO
NEARLY AN INCH OF RAIN CAN BE EXPECTED OVER MUCH OF THE SAME AREA
THIS MORNING WITH HEAVIER AMOUNTS LIKELY IN THE PATHS OF THE
STRONG THUNDERSTORMS.

DUE TO THE VERY SATURATED CONDITIONS IN NORTHEAST OKLAHOMA...
ADDITIONAL FLASH FLOODING AND FLOODING IS LIKELY EVEN WITH
SMALL AMOUNTS OF ADDITIONAL RAINFALL.

TAKE ALL NECESSARY PRECAUTIONS IF IN A FLOOD PRONE AREA AND DO
NOT DRIVE INTO WATER COVERING THE ROAD. IN SOME CASES THE ROAD
MAY NO LONGER EXIST AND YOU ARE DRIVING INTO A DEEP POOL OF WATER.

Special weather statement, May 2, 9:29 AM CDT, 2 hours 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
929 AM CDT SAT MAY 2 2009

OKZ054-059-021500-
OSAGE OK-PAWNEE OK-
929 AM CDT SAT MAY 2 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 1000 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     SOUTHERN OSAGE AND PAWNEE

AT 927 AM CDT...DOPPLER RADAR INDICATED A SMALL AREA OF STRONG WINDS
ASSOCIATED WITH A DISSIPATING THUNDERSTORM 3 MILES NORTHEAST OF
HALLETT...MOVING NORTHEAST AT 35 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM
INCLUDE...OSAGE...HOMINY...JENNINGS...TERLTON...HALLETT...BLACKBURN..
.SKEDEE...CLEVELAND AND WESTPORT.

THIS WINDS ARE PRODUCING WIND GUSTS TO AROUND 40 MPH.

LAT...LON 3649 9637 3630 9623 3617 9630 3618 9662
      3638 9677
TIME...MOT...LOC 1427Z 227DEG 32KT 3628 9651

Special weather statement, May 2, 9:47 AM CDT, 1 hour 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
947 AM CDT SAT MAY 2 2009

OKZ049-053-021530-
CHOCTAW OK-PUSHMATAHA OK-
947 AM CDT SAT MAY 2 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 1030 AM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     EASTERN CHOCTAW AND CENTRAL PUSHMATAHA

AT 947 AM CDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM SNOW TO 2 MILES SOUTHWEST OF FALLON...MOVING EAST
AT 30 MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS
INCLUDE...HUGO...ORD...FROGVILLE...GRANT...SAWYER...FORT TOWSON...
SWINK...MESSER...SOBOL...HUSKEY...FALLON...APPLE...CORINNE...
RATTAN...CLOUDY...FINLEY...SNOW AND OLETA.

THESE STORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS
TO 40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

LAT...LON 3389 9555 3391 9555 3447 9547 3447 9503
      3425 9503 3424 9513 3416 9513 3415 9515
      3394 9514 3394 9516 3396 9523 3389 9526
TIME...MOT...LOC 1447Z 270DEG 27KT 3438 9538 3398 9543

Special weather statement, May 2, 10:06 AM CDT, 1 hour 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1006 AM CDT SAT MAY 2 2009

OKZ049-073-075-076-021600-
LATIMER OK-LE FLORE OK-PITTSBURG OK-PUSHMATAHA OK-
1006 AM CDT SAT MAY 2 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 1100 AM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     WESTERN LE FLORE...SOUTHERN PITTSBURG...NORTHERN PUSHMATAHA AND
     LATIMER

AT 1007 AM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 11
MILES SOUTHEAST OF BLANCO...MOVING EAST AT 40 MPH. SOME LOCATIONS
THAT WILL BE AFFECTED BY THIS STORM INCLUDE...WILBURTON...YANUSH...
HIGGINS...BENGAL...DAMON...GOWEN...PANOLA...RED OAK...TALIHINA...
BLANCO...HARTSHORNE...HAILEYVILLE...CLAYTON...TUSKAHOMA...KIAMICHI...
ALBION AND SARDIS.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

LAT...LON 3459 9568 3459 9574 3482 9580 3502 9496
      3462 9494 3454 9568
TIME...MOT...LOC 1507Z 259DEG 35KT 3464 9563

Special weather statement, May 2, 11:27 AM CDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1127 AM CDT SAT MAY 2 2009

OKZ049-073-021715-
PITTSBURG OK-PUSHMATAHA OK-
1127 AM CDT SAT MAY 2 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 1215 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     SOUTHEASTERN PITTSBURG AND NORTHERN PUSHMATAHA

AT 1127 AM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 7
MILES WEST OF STANLEY...MOVING EAST AT 35 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THIS STORM INCLUDE...CLAYTON...NASHOBA...
STANLEY...TUSKAHOMA...KIAMICHI...ALBION AND SARDIS.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

LAT...LON 3465 9567 3469 9500 3469 9496 3451 9497
      3451 9504 3449 9504 3446 9568
TIME...MOT...LOC 1627Z 265DEG 32KT 3456 9559

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 8:49 PM CDT	River Flood Warning	TSA	Washington	12 hr
May 1, 8:51 PM CDT	River Flood Warning	TSA	Adair	7 hr
May 1, 9:30 PM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Craig, Delaware, Mayes, Nowata and 6 more	12 hr
May 2, 4:15 AM CDT	Special Weather Statement	TSA	Mayes	30 min
May 2, 4:45 AM CDT	Special Weather Statement	TSA	LeFlore	30 min
May 2, 8:49 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	56 min
May 2, 9:29 AM CDT	Special Weather Statement	TSA	Pawnee	31 min
May 2, 9:47 AM CDT	Special Weather Statement	TSA	Pushmataha	43 min
May 2, 10:06 AM CDT	Special Weather Statement	TSA	Latimer	54 min
May 2, 11:27 AM CDT	Special Weather Statement	TSA	Pushmataha	48 min
May 2, 12:16 PM CDT	Special Weather Statement	TSA	Pushmataha	29 min
May 2, 2:25 PM CDT	Areal Flood Advisory	TSA	Pushmataha	2 hr
May 2, 3:01 PM CDT	River Flood Warning	TSA	LeFlore	30 hr
May 2, 3:01 PM CDT	River Flood Warning	TSA	LeFlore	6 days
May 2, 3:16 PM CDT	Special Weather Statement	TSA	Choctaw	44 min
May 2, 3:21 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	54 min
May 2, 4:07 PM CDT	Flash Flood Warning	TSA	Choctaw, Pushmataha	10 hr
May 2, 4:38 PM CDT	Special Weather Statement	TSA	Pushmataha	37 min
May 1, 7:18 PM CDT	Special Weather Statement	TSA	Benton	42 min
May 1, 7:28 PM CDT	Tornado Warning	TSA	Madison	22 min
May 1, 7:34 PM CDT	Severe Thunderstorm Warning	TSA	Madison	43 min
May 1, 7:42 PM CDT	Flash Flood Warning	TSA	Madison	4 hr
May 1, 9:05 PM CDT	River Flood Watch	TSA	Crawford, Sebastian	21 hr
May 1, 9:38 PM CDT	Areal Flood Advisory	TSA	Crawford, Franklin, Madison, Washington	112 min
May 1, 9:50 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison, Washington	55 min
May 1, 11:51 PM CDT	Areal Flood Warning	TSA	Madison, Washington	8 hr
May 2, 2:59 PM CDT	River Flood Warning	TSA	Crawford, Sebastian	42 hr
May 2, 3:23 PM CDT	Areal Flood Advisory	TSA	Franklin, Sebastian	112 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.