Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 146, NWS Tulsa, OK

May 1, 2009Osage County, Pawnee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 1, 2009, 8:41 AM CDT for Osage County, Pawnee County, Oklahoma. It was in force for 64 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: May 1, 2009, 8:41 AM CDT (13:41 UTC)
Expired: May 1, 2009, 9:45 AM CDT
In force: 64 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Osage County, OK, Pawnee County, OK

The radar

The Vance AFB radar (KVNX), 110 km from the middle of the area, began a volume at 13:45 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 1, 7:26 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lamont, OK (KLMN), launched 12:00Z, 1.7 hours before the alert went out and 50 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: 1247 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 472 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 011341
SVRTSA
OKC113-117-011445-
/O.NEW.KTSA.SV.W.0146.090501T1341Z-090501T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
841 AM CDT FRI MAY 1 2009

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
  PAWNEE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 945 AM CDT

* AT 839 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL AND WINDS
  TO 60 MPH. THIS STORM WAS LOCATED 25 MILES WEST OF PAWNEE...MOVING
  EAST AT 25 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...PAWNEE...
  RALSTON...SKEDEE AND MARAMEC.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3671 9705 3670 9694 3676 9689 3676 9683
      3679 9676 3616 9664 3620 9683 3625 9683
      3625 9692 3634 9693 3635 9703 3651 9704
      3656 9690 3659 9690 3660 9693 3658 9701
      3660 9706 3668 9708
TIME...MOT...LOC 1340Z 281DEG 21KT 3642 9723

$$

2 follow-up statements

000 
WWUS54 KTSA 011415
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
915 AM CDT FRI MAY 1 2009

OKC113-117-011445-
/O.CON.KTSA.SV.W.0146.000000T0000Z-090501T1445Z/
OSAGE OK-PAWNEE OK-
915 AM CDT FRI MAY 1 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM CDT
FOR PAWNEE AND WESTERN OSAGE COUNTIES...

AT 914 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL
AND WINDS TO 60 MPH. THIS STORM WAS LOCATED 13 MILES NORTHWEST OF
PAWNEE...MOVING EAST AT 25 MPH.

SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...APPERSON...
PAWNEE...RALSTON...SKEDEE AND MARAMEC.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3671 9705 3670 9694 3676 9689 3676 9683
      3679 9676 3616 9664 3620 9683 3625 9683
      3625 9692 3634 9693 3635 9703 3651 9704
      3656 9690 3659 9690 3660 9693 3658 9701
      3660 9706 3668 9708
TIME...MOT...LOC 1415Z 277DEG 20KT 3647 9695

$$

000 
WWUS54 KTSA 011432
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
932 AM CDT FRI MAY 1 2009

OKC113-117-011445-
/O.CON.KTSA.SV.W.0146.000000T0000Z-090501T1445Z/
OSAGE OK-PAWNEE OK-
932 AM CDT FRI MAY 1 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM CDT
FOR PAWNEE AND WESTERN OSAGE COUNTIES...

AT 932 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL
AND WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR RALSTON...MOVING
EAST AT 25 MPH.

SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...APPERSON AND
RALSTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3671 9705 3670 9694 3676 9689 3676 9683
      3679 9676 3644 9669 3643 9670 3640 9703
      3651 9704 3656 9690 3659 9690 3660 9693
      3658 9701 3660 9706 3668 9708
TIME...MOT...LOC 1433Z 268DEG 20KT 3650 9682

$$

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 1, 7:36 AM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, May 1, 7:36 AM CDT, 1 hour 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
736 AM CDT FRI MAY 1 2009

...UPDATE...

.DISCUSSION...
UPDATE TO INCLUDE LATEST WATCH INFORMATION. CLUSTERS IN NORTHEAST
AND NORTH CENTRAL OKLAHOMA MOVING/BUILDING ALONG AN OLD BOUNDARY
THAT IS BEING ASSISTED BY A SOUTHEAST MOVING COLD FRONT.
THUNDERSTORMS ARE EXPECTED TO CONTINUE TO BUILD AND INTENSIFY
DURING THE MORNING HOURS ALONG THIS BOUNDARY WITH HAIL AND
HIGH WINDS BEING THE MAIN THREATS. SOME AREAS ALSO RECEIVING
TOWARDS 2 INCH/HOUR RAIN WITH THE STRONGER CELLS. MORE THAN
ENOUGH TO PRODUCE LOCALIZED FLOODING PROBLEMS.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...FLASH FLOOD WATCH UNTIL 7 PM SUNDAY FOR OKZ049-OKZ053-OKZ054-
     OKZ055-OKZ056-OKZ057-OKZ058-OKZ059-OKZ060-OKZ061-OKZ062-
     OKZ063-OKZ064-OKZ065-OKZ066-OKZ067-OKZ068-OKZ069-OKZ070-
     OKZ071-OKZ072-OKZ073-OKZ074-OKZ075-OKZ076.

AR...FLASH FLOOD WATCH UNTIL 7 PM SUNDAY FOR ARZ001-ARZ002-ARZ010-
     ARZ011-ARZ019-ARZ020-ARZ029.

&&

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

Hazardous weather outlook, May 1, 4:58 AM CDT, 3 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
458 AM CDT FRI MAY 1 2009

ARZ001-002-010-011-019-020-029-OKZ049-053>076-021000-
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 FRI MAY 1 2009

...WET AND STORMY WEATHER TO CONTINUE THROUGH TODAY AND INTO THE
WEEKEND...

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

.DAY ONE...TODAY AND TONIGHT.

SEVERE THUNDERSTORM.
RISK...LIMITED.
AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
ONSET...ONGOING.

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

AREA AT GREATEST RISK...NORTHEAST OKLAHOMA AND NORTHWEST
                                ARKANSAS.

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

DISCUSSION...
THUNDERSTORMS WILL CONTINUE TO DEVELOP THROUGH THE MORNING HOURS
ALONG A SLOW MOVING COLD FRONT STRETCHING FROM THE SOUTHERN TEXAS
PANHANDLE THROUGH NORTHEAST OKLAHOMA AND TOWARD THE SAINT LOUIS
AREA. INSTABILITY AND WIND SHEAR PRESENT ALONG AND AHEAD OF THE
FRONT WILL CONTINUE TO SUPPORT A LIMITED SEVERE WEATHER THREAT
THROUGH MUCH OF THE DAY. LARGE HAIL AND DAMAGING WINDS WILL BE THE
MAIN THREATS.

ALONG WITH THE SEVERE STORM POSSIBILITIES...HEAVY RAIN AND FLASH
FLOODING WILL CONTINUE TO BE LIKELY. ABUNDANT RAINS OVER THE PAST
FEW DAYS HAVE LED TO SATURATED SOILS AND SWOLLEN CREEKS AND
RIVERS...AND ADDITIONAL RAIN FROM TODAYS THUNDERSTORMS WILL ONLY
WORSEN THE FLOOD THREAT. WIDESPREAD TOTALS OF ONE TO TWO INCHES OF
RAIN CAN BE EXPECTED THROUGH TONIGHT. A FLASH FLOOD
WATCH...OKCFFATSA...HAS BEEN POSTED FOR ALL OF EASTERN OKLAHOMA
AND NORTHWESTERN ARKANSAS.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
SATURDAY...SEVERE THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL.
MONDAY THROUGH THURSDAY...NO HAZARDS.

EXTENDED DISCUSSION...
THE FRONTAL BOUNDARY WILL REMAIN IN THE AREA THROUGH THE REMAINDER
OF THE WEEKEND BEFORE FINALLY EXITING EASTERN OKLAHOMA AND
NORTHWEST ARKANSAS ON MONDAY. AS A RESULT...THUNDERSTORMS WILL
REMAIN IN THE FORECAST THROUGH SUNDAY...WITH SEVERE STORMS
POSSIBLE...ESPECIALLY ON SATURDAY. HEAVY RAIN AND FLOODING
CONCERNS WILL ALSO REMAIN...AND THE AFOREMENTIONED FLASH FLOOD
WATCH WILL BE IN EFFECT THROUGH SUNDAY EVENING. RAINFALL TOTALS
FROM SATURDAY THROUGH SUNDAY OF 2 TO 4 INCHES WILL BE
LIKELY...WITH LOCALLY HIGHER AMOUNTS POSSIBLE.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
AN ACTIVE WEATHER PATTERN WILL REMAIN IN PLACE THROUGH THE END OF
THE WEEKEND...WITH WEATHER RELATED RESPONSES LIKELY ONE OR MORE
TIMES DUE TO SEVERE WEATHER AND FLOODING POTENTIAL.

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

In the hours before

Special weather statement, May 1, 4:49 AM CDT, 3 hours 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
449 AM CDT FRI MAY 1 2009

OKZ055>057-061>063-011045-
CRAIG OK-DELAWARE OK-MAYES OK-NOWATA OK-ROGERS OK-WASHINGTON OK-
449 AM CDT FRI MAY 1 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 545 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     NORTHERN ROGERS...WESTERN DELAWARE...SOUTHERN CRAIG...SOUTHERN
     NOWATA...WASHINGTON AND NORTHERN MAYES

AT 449 AM CDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM TALALA TO 2 MILES WEST OF FOYIL TO 3 MILES EAST
OF WHITE OAK...MOVING EAST AT 25 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THESE STORMS INCLUDE...WATOVA...NEW ALLUWE...FOYIL...
OOLOGAH...BUSHYHEAD...TALALA...CHELSEA...VINITA...KETCHUM...BIG
CABIN...WHITE OAK...SPAVINAW...STRANG...ADAIR...PENSACOLA...LANGLEY
AND DISNEY.

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 3667 9586 3672 9530 3671 9501 3631 9500
      3635 9572
TIME...MOT...LOC 0949Z 289DEG 21KT 3655 9570 3645 9555
          3661 9520

Local storm report, May 1, 6:47 AM CDT, 1 hour 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
647 AM CDT FRI MAY 01 2009

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

0645 AM     HAIL             LOCUST GROVE            36.20N 95.17W
05/01/2009  M0.75 INCH       MAYES              OK   LAW ENFORCEMENT

            REPORTED BY LOCUST GROVE POLICE DEPARTMENT

&&

KAT

Special weather statement, May 1, 7:08 AM CDT, 1 hour 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
708 AM CDT FRI MAY 1 2009

ARZ002-011315-
CARROLL AR-
708 AM CDT FRI MAY 1 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 815 AM CDT
FOR THE FOLLOWING COUNTY...

IN NORTHWEST ARKANSAS
     NORTHERN CARROLL

AT 708 AM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
BEAVER...MOVING EAST AT 20 MPH. SOME LOCATIONS THAT WILL BE AFFECTED
BY THIS STORM INCLUDE...OAK GROVE...OAK HILL...PLEASANT RIDGE...
BERRYVILLE...EUREKA SPRINGS...GREEN FOREST...CARROLLTON...COIN...
URBANETTE...GRANDVIEW...BUSCH AND BEAVER.

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 3642 9386 3650 9384 3650 9341 3648 9332
      3626 9331
TIME...MOT...LOC 1208Z 288DEG 16KT 3649 9374

Local storm report, May 1, 8:00 AM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
800 AM CDT FRI MAY 01 2009

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

0745 AM     FLASH FLOOD      PRYOR                   36.31N 95.32W
05/01/2009                   MAYES              OK   LAW ENFORCEMENT

            NUMEROUS FLOODING ISSUES IN CITY. SWIFT WATER RESCUE
            REQUIRED JUST NORTH OF PRYOR. 3.36 INCES IN TWO HOURS AT
            MESONET SITE.

&&

KAT

Special weather statement, May 1, 8:04 AM CDT, 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
804 AM CDT FRI MAY 1 2009

OKZ061-062-011330-
MAYES OK-ROGERS OK-
804 AM CDT FRI MAY 1 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 830 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     SOUTHERN ROGERS AND CENTRAL MAYES

AT 803 AM CDT...DOPPLER RADAR INDICATED A LARGE CLUSTER OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM SALINA TO 6 MILES
SOUTHEAST OF FOYIL TO VERDIGRIS...MOVING EAST AT 20 MPH. SOME
LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE...
CLAREMORE...VERDIGRIS...TIAWAH...FOYIL...PRYOR...CHOUTEAU..
.SALINA...SPAVINAW...STRANG AND ADAIR.

THE STRONGEST STORMS WERE LOCATED FROM CLAREMORE TO JUST SOUTH OF
FOYIL.

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 3639 9501 3637 9501 3628 9501 3614 9545
      3626 9580 3647 9546
TIME...MOT...LOC 1303Z 291DEG 19KT 3629 9513 3639 9540
          3625 9567

Special weather statement, May 1, 8:25 AM CDT, 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
825 AM CDT FRI MAY 1 2009

OKZ057-058-063-011400-
CRAIG OK-DELAWARE OK-OTTAWA OK-
825 AM CDT FRI MAY 1 2009

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 900 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     NORTHERN DELAWARE...EASTERN CRAIG AND SOUTHERN OTTAWA

AT 824 AM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES
SOUTHWEST OF BLUEJACKET...MOVING EAST AT 40 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THIS STORM INCLUDE...GROVE...AFTON...FAIRLAND...
NARCISSA...WYANDOTTE AND BLUEJACKET.

ANOTHER STRONG STORM WAS LOCATED ABOUT 5 MILES WEST SOUTHWEST OF
MIAMI...ALSO MOVING EAST AT ABOUT 40 MPH.

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 3678 9462 3656 9466 3670 9518 3687 9502
TIME...MOT...LOC 1324Z 278DEG 33KT 3673 9511

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 8:46 PM CDT	River Flood Warning	TSA	Rogers, Tulsa	3 days
May 1, 12:25 AM CDT	Special Weather Statement	TSA	Pawnee	50 min
May 1, 1:34 AM CDT	River Flood Warning	TSA	Muskogee	37 hr
May 1, 2:05 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Ottawa	55 min
May 1, 2:46 AM CDT	Flash Flood Warning	TSA	Craig, Ottawa	3 hr
May 1, 2:59 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	61 min
May 1, 3:39 AM CDT	Flash Flood Watch	TSA	Adair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more	54 hr
May 1, 3:42 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes	63 min
May 1, 4:27 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes	63 min
May 1, 4:49 AM CDT	Special Weather Statement	TSA	Rogers	56 min
May 1, 5:00 AM CDT	Flash Flood Warning	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers	4 hr
May 1, 6:25 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Delaware, Mayes	65 min
May 1, 6:54 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Delaware, Mayes	4 hr
May 1, 7:14 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes	61 min
May 1, 8:04 AM CDT	Special Weather Statement	TSA	Mayes, Rogers	26 min
May 1, 8:23 AM CDT	Flash Flood Warning	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers and 1 more	4 hr
May 1, 8:25 AM CDT	Special Weather Statement	TSA	Ottawa	35 min
May 1, 8:32 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Delaware, Mayes, Rogers	47 min
May 1, 8:40 AM CDT	Severe Thunderstorm Warning	TSA	Ottawa	34 min
May 1, 10:00 AM CDT	Flash Flood Warning	TSA	Tulsa	4 hr
May 1, 10:19 AM CDT	Flash Flood Warning	TSA	Creek, Rogers, Tulsa, Wagoner	3 hr
May 1, 10:44 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Delaware, Mayes, Rogers, Wagoner	6 hr
May 1, 10:49 AM CDT	Special Weather Statement	TSA	Osage	41 min
May 1, 11:00 AM CDT	Special Weather Statement	TSA	Wagoner	30 min
May 1, 11:02 AM CDT	Severe Thunderstorm Warning	TSA	Osage	44 min
May 1, 11:28 AM CDT	River Flood Warning	TSA	Tulsa	21 hr
May 1, 11:47 AM CDT	Severe Thunderstorm Warning	TSA	Osage	30 min
May 1, 11:50 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	40 min
May 1, 12:08 PM CDT	Flash Flood Warning	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers	4 hr
May 1, 12:12 PM CDT	Special Weather Statement	TSA	Mayes	33 min
May 1, 12:31 PM CDT	Special Weather Statement	TSA	Adair	44 min
May 1, 12:54 PM CDT	Special Weather Statement	TSA	Nowata	66 min
May 1, 12:59 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Washington	30 min
May 1, 1:27 PM CDT	Severe Thunderstorm Warning	TSA	Mayes	63 min
May 1, 1:29 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	46 min
May 1, 1:56 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes	64 min
May 1, 2:03 PM CDT	Flash Flood Warning	TSA	Rogers, Tulsa	117 min
May 1, 2:15 PM CDT	Special Weather Statement	TSA	Nowata	60 min
May 1, 2:35 PM CDT	Flash Flood Warning	TSA	Nowata, Osage, Washington	4 hr
May 1, 2:35 PM CDT	River Flood Watch	TSA	Osage, Tulsa	58 hr
May 1, 2:35 PM CDT	River Flood Watch	TSA	Washington	7 hr
May 1, 2:35 PM CDT	River Flood Watch	TSA	Adair	7 hr
May 1, 2:35 PM CDT	River Flood Watch	TSA	Okmulgee	58 hr
May 1, 2:35 PM CDT	River Flood Watch	TSA	Creek	58 hr
May 1, 2:49 PM CDT	Special Weather Statement	TSA	Mayes	41 min
May 1, 2:56 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	64 min
May 1, 3:02 PM CDT	River Flood Warning	TSA	Cherokee	18 hr
May 1, 3:10 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	36 min
May 1, 3:14 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	61 min
May 1, 3:52 PM CDT	Flash Flood Warning	TSA	Craig, Delaware, Nowata, Ottawa	6 hr
May 1, 3:53 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Ottawa	67 min
May 1, 3:59 PM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Craig, Delaware, Mayes, Nowata and 3 more	6 hr
May 1, 4:58 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	47 min
May 1, 5:10 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Ottawa	65 min
May 1, 5:14 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	16 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.