Alert archive / Oklahoma / Special Weather Statements in 2011

Special Weather Statement, NWS Tulsa, OK

May 20, 2011Wagoner County, Oklahoma

NWS Tulsa, OK issued this special weather statement at May 20, 2011, 2:27 AM CDT for Wagoner County, Oklahoma. It was in force for 33 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 20, 2011, 2:27 AM CDT (07:27 UTC)
Expired: May 20, 2011, 3:00 AM CDT
In force: 33 min
Issued by: NWS Tulsa, OK

County Wagoner County, OK

The radar

The Tulsa radar (KINX), 32 km from the middle of the area, began a volume at 07:31 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 00:00Z, 7.5 hours before the alert went out and 169 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: 2115 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 678 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 252 m²/s²
0-3 km storm-relative helicity: 263 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 8.0

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 20, 12:13 AM CDT, 2 hours 14 minutes earlier.

Area forecast discussion, May 20, 12:13 AM CDT, 2 hours 14 minutes before

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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Hazardous weather outlook, May 19, 9:45 PM CDT, 4 hours 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
945 PM CDT THU MAY 19 2011

ARZ001-002-010-011-019-020-029-OKZ049-053>076-201000-
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-
945 PM CDT THU MAY 19 2011

...SEVERE THUNDERSTORMS POSSIBLE FRIDAY AND FRIDAY NIGHT...

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

.DAY ONE...TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...WEST OF HIGHWAY 75 IN EASTERN OKLAHOMA.
	ONSET...AFTER MIDNIGHT.

SIGNIFICANT WINDS.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA.
	ONSET...ONGOING.

DISCUSSION...
ONGOING THUNDERSTORMS CURRENTLY MOVING INTO SOUTHCENTRAL OKLAHOMA
MAY EVENTUALLY MOVE INTO PARTS OF EASTERN OKLAHOMA AFTER MIDNIGHT.
IN ADDITION...THUNDERSTORMS MAY ALSO DEVELOP LATE TONIGHT ACROSS THE
AREA IN RESPONSE TO A STRENGTHENING LOW-LEVEL JET. SOME OF THE
STRONGER STORMS COULD BE CAPABLE OF PRODUCING MARGINALLY SEVERE
WIND AND HAIL.

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

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND
POTENTIAL...HEAVY RAIN POTENTIAL.
SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL.
MONDAY...THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL.
TUESDAY...THUNDERSTORM POTENTIAL.
WEDNESDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
THUNDERSTORMS ARE EXPECTED TO EXPAND IN COVERAGE EARLY FRIDAY IN
RESPONSE TO AN APPROACHING UPPER LEVEL LOW. A BRIEF LULL IN THE
ACTIVITY WILL BE POSSIBLE MID TO LATE AFTERNOON FRIDAY AS
THUNDERSTORMS REFOCUS WEST OF THE AREA. SEVERE WEATHER WILL AGAIN
BE POSSIBLE FRIDAY NIGHT AS THE MAIN THUNDERSTORM COMPLEX SWEEPS
ACROSS MUCH OF THE REGION WITH THE THREAT FOR LARGE HAIL AND
DAMAGING WINDS.

THUNDERSTORM CHANCES WILL CONTINUE INTO NEXT WEEK AS THE WARM AND
MOIST FLOW PERSISTS. GIVEN THE VERY MOIST AIRMASS...PERIODS OF HEAVY
RAINFALL WILL OCCUR.

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

In the hours before

Special weather statement, May 19, 11:34 PM CDT, 2 hours 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1134 PM CDT THU MAY 19 2011

OKZ054-059-200530-
OSAGE OK-PAWNEE OK-
1134 PM CDT THU MAY 19 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1230 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     OSAGE AND PAWNEE

AT 1132 PM CDT...STRONG WIND GUSTS UP TO 55 MPH ASSOCIATED WITH A
DECAYING LINE OF SHOWERS CONTINUED ALONG AND WEST OF A LINE
EXTENDING FROM 4 MILES NORTH OF BIGHEART TO 10 MILES WEST OF PAWNEE.
A LARGE PORTION OF OSAGE AND PAWNEE COUNTIES WILL BE AFFECTED BY
THESE WINDS THROUGH 1230 AM CDT.

LAT...LON 3700 9600 3616 9600 3615 9671 3617 9682
      3624 9683 3625 9693 3633 9693 3633 9704
      3651 9704 3657 9690 3659 9691 3659 9706
      3668 9707 3670 9705 3669 9694 3675 9689
      3675 9683 3679 9676 3701 9675
TIME...MOT...LOC 0432Z 280DEG 6KT 3691 9622 3628 9696

Special weather statement, May 20, 12:01 AM CDT, 2 hours 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1201 AM CDT FRI MAY 20 2011

OKZ064>066-200530-
CREEK OK-OKFUSKEE OK-OKMULGEE OK-
1201 AM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1230 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     CREEK AND NORTHWESTERN OKMULGEE

IN EAST CENTRAL OKLAHOMA
     NORTHWESTERN OKFUSKEE

AT 1201 AM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 13 MILES WEST OF DRUMRIGHT TO 7 MILES SOUTHWEST OF
MILFAY TO 15 MILES WEST OF PADEN...MOVING EAST AT 40 MPH. SOME
LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE...CASTLE...
PADEN...BOLEY...MASON...WELTY...BRISTOW...MILFAY...SLICK...DEPEW...
SHAMROCK...DRUMRIGHT...OILTON...SILVER CITY...MANNFORD AND
KELLYVILLE.

THESE STORMS WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL. THESE
STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

LAT...LON 3610 9663 3616 9636 3584 9614 3549 9632
      3544 9653 3545 9655 3543 9656 3541 9663
TIME...MOT...LOC 0501Z 254DEG 34KT 3599 9675 3573 9661
          3546 9674

Special weather statement, May 20, 12:27 AM CDT, 2 hours before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1227 AM CDT FRI MAY 20 2011

OKZ054-059-060-064>066-200600-
CREEK OK-OKFUSKEE OK-OKMULGEE OK-OSAGE OK-PAWNEE OK-TULSA OK-
1227 AM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 100 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     CREEK...NORTHWESTERN OKMULGEE...OSAGE...PAWNEE AND WESTERN TULSA

IN EAST CENTRAL OKLAHOMA
     NORTHERN OKFUSKEE

AT 1227 AM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM APPERSON TO 3 MILES SOUTHEAST OF SILVER CITY TO 4
MILES NORTH OF BOLEY...MOVING NORTHEAST AT 45 MPH.

THESE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

LAT...LON 3635 9597 3575 9601 3544 9653 3604 9650
      3650 9704 3654 9698 3656 9689 3659 9691
      3658 9697 3700 9654 3700 9645
TIME...MOT...LOC 0527Z 234DEG 39KT 3677 9671 3609 9640
          3559 9643

Special weather statement, May 20, 1:02 AM CDT, 1 hour 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
102 AM CDT FRI MAY 20 2011

OKZ054-059-200630-
OSAGE OK-PAWNEE OK-
102 AM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 130 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     OSAGE AND PAWNEE

AT 102 AM CDT...STRONG STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM APPERSON TO 3 MILES SOUTHWEST OF OSAGE...MOVING EAST AT 45 MPH.
SOME LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS
INCLUDE...PAWHUSKA...SHIDLER...OSAGE...HOMINY...WYNONA...FAIRFAX...BA
RNSDALL...PERSHING...TALLANT...NELAGONEY...BURBANK...APPERSON...WEBB
CITY...PEARSONIA...FORAKER...TERLTON...BLACKBURN...CLEVELAND AND
WESTPORT.

THESE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

LAT...LON 3624 9602 3616 9644 3616 9648 3673 9689
      3698 9634
TIME...MOT...LOC 0602Z 249DEG 37KT 3675 9677 3626 9642

Special weather statement, May 20, 1:06 AM CDT, 1 hour 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
106 AM CDT FRI MAY 20 2011

OKZ054-055-060-064-200630-
CREEK OK-OSAGE OK-TULSA OK-WASHINGTON OK-
106 AM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 130 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     NORTHEASTERN CREEK...SOUTHEASTERN OSAGE...TULSA AND WASHINGTON

AT 106 AM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER SAND
SPRINGS...MOVING NORTHEAST AT 35 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...TULSA...GRAY...SAND SPRINGS...
JENKS...SPERRY AND SKIATOOK.

THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL. THIS STORM
WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH.

LAT...LON 3659 9599 3610 9580 3597 9603 3616 9623
TIME...MOT...LOC 0606Z 210DEG 32KT 3614 9613

Special weather statement, May 20, 2:27 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
227 AM CDT FRI MAY 20 2011

OKZ060-066-067-200800-
OKMULGEE OK-TULSA OK-WAGONER OK-
227 AM CDT FRI MAY 20 2011

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 300 AM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     NORTHEASTERN OKMULGEE...SOUTHEASTERN TULSA AND NORTHWESTERN
     WAGONER

AT 228 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 8 MILES SOUTHWEST
OF STONEBLUFF...MOVING NORTH AT 40 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...TULSA...LEONARD...BROKEN ARROW...
STONEBLUFF AND ONETA.

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

LAT...LON 3613 9557 3586 9574 3585 9576 3582 9576
      3573 9581 3575 9591 3616 9585
TIME...MOT...LOC 0728Z 199DEG 34KT 3583 9583

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 10:33 PM CDT	Special Weather Statement	TSA	Osage, Pawnee	57 min
May 19, 11:34 PM CDT	Special Weather Statement	TSA	Osage, Pawnee	56 min
May 20, 12:01 AM CDT	Special Weather Statement	TSA	Creek	29 min
May 20, 12:27 AM CDT	Special Weather Statement	TSA	Creek, Osage, Pawnee	33 min
May 20, 1:02 AM CDT	Special Weather Statement	TSA	Osage	28 min
May 20, 1:06 AM CDT	Special Weather Statement	TSA	Tulsa	24 min
May 20, 5:54 AM CDT	Special Weather Statement	TSA	Creek, Osage, Pawnee	66 min
May 20, 6:00 AM CDT	Special Weather Statement	TSA	Muskogee	30 min
May 20, 6:29 AM CDT	Special Weather Statement	TSA	Sequoyah	31 min
May 20, 6:32 AM CDT	Special Weather Statement	TSA	Latimer	28 min
May 20, 6:57 AM CDT	Special Weather Statement	TSA	Cherokee	33 min
May 20, 7:03 AM CDT	Special Weather Statement	TSA	Ottawa	27 min
May 20, 7:14 AM CDT	Special Weather Statement	TSA	Okfuskee, Okmulgee, Tulsa, Washington	31 min
May 20, 7:44 AM CDT	Areal Flood Advisory	TSA	Creek, Tulsa	61 min
May 20, 7:49 AM CDT	Special Weather Statement	TSA	Adair	26 min
May 20, 7:51 AM CDT	Special Weather Statement	TSA	Ottawa	24 min
May 20, 8:42 AM CDT	Special Weather Statement	TSA	Sequoyah	33 min
May 20, 9:34 AM CDT	Special Weather Statement	TSA	Cherokee, McIntosh, Mayes, Muskogee, Pittsburg	26 min
May 20, 9:45 AM CDT	Areal Flood Advisory	TSA	Cherokee, Craig, Delaware, Mayes, Muskogee, Ottawa and 2 more	2 hr
May 20, 9:55 AM CDT	Special Weather Statement	TSA	Adair	35 min
May 20, 10:18 AM CDT	Severe Thunderstorm Warning	TSA	Delaware	27 min
May 20, 11:08 AM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, McIntosh, Muskogee, Pittsburg, Sequoyah	97 min
May 20, 11:12 AM CDT	Flash Flood Watch	TSA	Adair, Cherokee, Choctaw, Craig, Delaware, Haskell and 10 more	16 hr
May 20, 11:19 AM CDT	Special Weather Statement	TSA	Adair, Haskell, Latimer, LeFlore, Sequoyah	26 min
May 20, 11:27 AM CDT	Flash Flood Warning	TSA	Latimer, Pittsburg	2 hr
May 20, 11:35 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Haskell, Latimer, LeFlore, Sequoyah	55 min
May 20, 11:36 AM CDT	Tornado Warning	TSA	Adair, Sequoyah	24 min
May 20, 11:38 AM CDT	Tornado Warning	TSA	Sequoyah	37 min
May 20, 11:47 AM CDT	Tornado Warning	TSA	Haskell, LeFlore, Sequoyah	28 min
May 20, 11:54 AM CDT	Severe Thunderstorm Warning	TSA	Adair	66 min
May 20, 12:17 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer, Sequoyah	3 hr
May 20, 12:30 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	60 min
May 20, 1:16 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	29 min
May 20, 1:18 PM CDT	Areal Flood Advisory	TSA	LeFlore, Sequoyah	57 min
May 20, 1:27 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	63 min
May 20, 3:39 PM CDT	Special Weather Statement	TSA	Pittsburg	51 min
May 20, 3:51 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	84 min
May 20, 4:18 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer, LeFlore, Pittsburg, Pushmataha	6 hr
May 20, 4:28 PM CDT	Special Weather Statement	TSA	Latimer	32 min
May 20, 4:40 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Pittsburg, Pushmataha	65 min
May 20, 5:11 PM CDT	Special Weather Statement	TSA	Sequoyah	34 min
May 20, 5:22 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	68 min
May 20, 5:38 PM CDT	Special Weather Statement	TSA	Sequoyah	52 min
May 20, 5:52 PM CDT	Areal Flood Advisory	TSA	Adair, LeFlore, Sequoyah	53 min
May 20, 8:07 AM CDT	Special Weather Statement	TSA	Crawford, Washington	23 min
May 20, 8:32 AM CDT	Special Weather Statement	TSA	Benton, Carroll, Madison, Washington	58 min
May 20, 8:50 AM CDT	Special Weather Statement	TSA	Sebastian	40 min
May 20, 9:08 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	67 min
May 20, 9:36 AM CDT	Special Weather Statement	TSA	Franklin	24 min
May 20, 10:15 AM CDT	Areal Flood Advisory	TSA	Carroll, Madison	60 min
May 20, 11:16 AM CDT	Special Weather Statement	TSA	Benton, Washington	59 min
May 20, 11:39 AM CDT	Flash Flood Warning	TSA	Madison, Washington	3 hr
May 20, 12:38 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison	82 min
May 20, 12:56 PM CDT	Severe Thunderstorm Warning	TSA	Madison, Washington	94 min
May 20, 6:14 PM CDT	Special Weather Statement	TSA	Crawford, Franklin, Madison	61 min
May 20, 6:42 PM CDT	Special Weather Statement	TSA	Carroll, Madison	63 min

Nearby

Special Weather Statements in Oklahoma, 2011 Every special weather statement in 2011

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.