Alert archive / Oklahoma / Special Weather Statements in 2016

Special Weather Statement, NWS Tulsa, OK

May 12, 2016Sequoyah County, Oklahoma; Crawford County, Arkansas

NWS Tulsa, OK issued this special weather statement at May 12, 2016, 1:28 AM CDT for Sequoyah County, Oklahoma; Crawford County, Arkansas. It was in force for 32 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 12, 2016, 1:28 AM CDT (06:28 UTC)
Expired: May 12, 2016, 2:00 AM CDT
In force: 32 min
Issued by: NWS Tulsa, OK

Counties Crawford County, AR, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 23 km from the middle of the area, began a volume at 06:30 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 00:00Z, 6.5 hours before the alert went out and 163 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: 1205 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1636 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

As transmitted.

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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 11, 11:49 PM CDT, 1 hour 39 minutes earlier.

Area forecast discussion, May 11, 11:49 PM CDT, 1 hour 39 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE Tulsa OK
1149 PM CDT WED MAY 11 2016

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Scattered thunderstorms will continue across much of Eastern
Oklahoma and Northwest Arkansas overnight as a cold front moves
southeast through the region. Periods of MVFR conditions will
remain possible within any precip with the better chances across
Southeast Oklahoma and Northwest Arkansas into the morning hours
Thursday. During the day Thursday...clearing conditions and
northerly winds are forecast Thursday afternoon and evening.

&&

.PREV DISCUSSION... /ISSUED 940 PM CDT WED MAY 11 2016/

DISCUSSION...
Cold front is moving slowly south across the area and has moved
southeast of Interstate 44 at this time. Elevated convection has
developed well southeast of the frontal boundary, in roughly the
same area where it occurred earlier in the day. Weak convection
has also been attempting to develop along the frontal boundary
with little success thus far.

The elevated convection from northwest Arkansas into southeast
Oklahoma should slowly increase over the next few hours, and some
of these storms will be capable of producing large hail. They may
become more surface based with time as well, which may increase
the damaging wind threat. Additional showers and storms will
likely develop near and north of the frontal boundary, but this
activity will have a lower severe weather potential.

Have made minor adjustments to overnight pops, with the rest of
the forecast looking on track at this time.

Update on the way.

TSA Watches/Warnings/Advisories...
OK...NONE.
AR...NONE.

SHORT TERM...20
LONG TERM....05

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   60  78  55  81 /  50  10   0   0
FSM   64  78  55  82 /  80  30   0   0
MLC   63  76  54  81 /  80  40   0   0
BVO   57  77  51  80 /  30  10   0  10
FYV   60  74  48  78 /  80  20   0   0
BYV   59  74  49  79 /  80  20   0   0
MKO   60  76  53  80 /  80  20   0   0
MIO   57  76  52  79 /  50  10   0  10
F10   61  76  54  80 /  80  20   0   0
HHW   66  77  58  80 /  70  60  10   0

&&

.TSA Watches/Warnings/Advisories...
OK...NONE.
AR...NONE.
&&

SHORT TERM...99
LONG TERM....99
AVIATION...20

Hazardous weather outlook, May 11, 5:02 PM CDT, 8 hours 26 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
502 PM CDT WED MAY 11 2016

ARZ001-002-010-011-019-020-029-OKZ049-053>076-121000-
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-
502 PM CDT WED MAY 11 2016

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

.DAY ONE...TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...MAINLY SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...THIS EVENING.

HEAVY RAIN.
	RISK...LIMITED.
	AREA...SOUTHEAST OF INTERSTATE 44.
	ONSET...THIS EVENING.

DISCUSSION...
THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS EVENING ALONG A COLD
FRONT WILL MOVE SLOWLY SOUTHEAST ACROSS THE AREA. A FEW OF THESE
STORMS MAY BECOME SEVERE...WITH LARGE HAIL UP TO GOLFBALL SIZE AND
DAMAGING WINDS OF 60 TO 70 MILES AN HOUR POSSIBLE. THE GREATEST
CHANCE FOR SEVERE STORMS WILL BE FROM SOUTHEAST OKLAHOMA INTO
NORTHWEST ARKANSAS. LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE
WITH THE STORMS TONIGHT.

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

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
THURSDAY THROUGH SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL.
MONDAY AND TUESDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
THUNDERSTORMS MAY BE ONGOING EARLY THURSDAY MORNING ACROSS AREAS TO
THE SOUTH OF INTERSTATE 40...WITH MUCH OF THIS ACTIVITY ENDING BY
LATE MORNING.

AN ACTIVE WEATHER PATTERN WILL REMAIN IN PLACE INTO THE EARLY TO
MIDDLE OF NEXT WEEK...WITH WIDESPREAD THUNDERSTORM CHANCES
RETURNING BY SATURDAY. SEVERE THUNDERSTORM POTENTIAL MAY INCREASE
EARLY NEXT WEEK AS A SLOW MOVING UPPER LEVEL LOW MOVES INTO THE
SOUTHWEST UNITED STATES.

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

In the hours before

Local storm report, May 11, 11:54 PM CDT, 1 hour 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1154 PM CDT WED MAY 11 2016

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

1144 PM     HAIL             4 SE STILWELL           35.77N 94.58W
05/11/2016  E1.00 INCH       ADAIR              OK   EMERGENCY MNGR

            DIME TO QUARTER SIZE HAIL IN HONEY HILL. TIME ESTIMATED
            BY RADAR.

&&

AEJ

Special weather statement, May 12, 12:15 AM CDT, 1 hour 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1215 AM CDT THU MAY 12 2016

ARZ029-OKZ076-120545-
SEBASTIAN AR-LE FLORE OK-
1215 AM CDT THU MAY 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SEBASTIAN AND
NORTHEASTERN LE FLORE COUNTIES UNTIL 1245 AM CDT...

AT 1214 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR POTEAU...MOVING
NORTHEAST AT 25 MPH.

PENNY TO NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE
POSSIBLE WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
POTEAU...                         SPIRO...
PANAMA...                         HACKETT...
CAMERON...                        SHADY POINT...
ROCK ISLAND...                    JENSON...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT FOR
WEST CENTRAL ARKANSAS...AND SOUTHEASTERN OKLAHOMA.

LAT...LON 3498 9462 3504 9476 3529 9468 3517 9436
TIME...MOT...LOC 0514Z 219DEG 23KT 3507 9466

Special weather statement, May 12, 12:18 AM CDT, 1 hour 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1218 AM CDT THU MAY 12 2016

ARZ001-010-120545-
WASHINGTON AR-BENTON AR-
1218 AM CDT THU MAY 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BENTON AND NORTHEASTERN
WASHINGTON COUNTIES UNTIL 1245 AM CDT...

AT 1218 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR TONTITOWN...
MOVING NORTHEAST AT 25 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
SPRINGDALE...                     ROGERS...
BENTONVILLE...                    LOWELL...
TONTITOWN...                      BETHEL HEIGHTS...
CAVE SPRINGS...                   HIGHFILL...
ELM SPRINGS...                    OAK GROVE...
MONTE NE...                       HEALING SPRINGS...
ROCKY COMFORT...

THIS INCLUDES INTERSTATE 49 BETWEEN MILE MARKERS 70 AND 84...AND
BETWEEN MILE MARKERS 86 AND 87.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT FOR
NORTHWESTERN ARKANSAS.

LAT...LON 3614 9425 3623 9433 3640 9414 3619 9394
TIME...MOT...LOC 0518Z 236DEG 21KT 3622 9425

Special weather statement, May 12, 12:34 AM CDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1234 AM CDT THU MAY 12 2016

OKZ066-070-071-120600-
MUSKOGEE OK-MCINTOSH OK-OKMULGEE OK-
1234 AM CDT THU MAY 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL OKMULGEE...NORTH
CENTRAL MCINTOSH AND WEST CENTRAL MUSKOGEE COUNTIES UNTIL 100 AM
CDT...

AT 1234 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES SOUTHWEST
OF BOYNTON...MOVING EAST AT 20 MPH.

PENNY TO NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE
POSSIBLE WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
OKTAHA...                         BOYNTON...
COUNCIL HILL...                   LAKE EUFAULA STATE PARK...
WAINWRIGHT...                     HITCHITA...
ERAM...

THIS INCLUDES INTERSTATE 40 IN OKLAHOMA BETWEEN MILE MARKERS 257 AND
261.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 AM CDT FOR
EASTERN OKLAHOMA.

LAT...LON 3553 9589 3567 9580 3565 9538 3543 9559
TIME...MOT...LOC 0534Z 281DEG 18KT 3560 9573

Local storm report, May 12, 12:45 AM CDT, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1245 AM CDT THU MAY 12 2016

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

1135 PM     TSTM WND DMG     7 SW COOKSON            35.64N 95.01W
05/11/2016                   CHEROKEE           OK   EMERGENCY MNGR

            RV OVERTURNED IN CATO CREEK AREA. TIME ESTIMATED BY
            RADAR.

&&

AEJ

Special weather statement, May 12, 1:28 AM CDT, 0 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
May 11, 9:32 PM CDT	Special Weather Statement	TSA	Sequoyah	28 min
May 11, 9:51 PM CDT	Special Weather Statement	TSA	Sequoyah	24 min
May 11, 10:21 PM CDT	Special Weather Statement	TSA	Cherokee	24 min
May 11, 10:49 PM CDT	Special Weather Statement	TSA	Cherokee	26 min
May 11, 11:01 PM CDT	Special Weather Statement	TSA	Sequoyah	29 min
May 11, 11:09 PM CDT	Special Weather Statement	TSA	Adair	36 min
May 11, 11:30 PM CDT	Special Weather Statement	TSA	Sequoyah	30 min
May 11, 11:32 PM CDT	Special Weather Statement	TSA	Adair	28 min
May 11, 11:40 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Muskogee	65 min
May 12, 12:20 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Muskogee, Sequoyah	3 hr
May 12, 12:34 AM CDT	Special Weather Statement	TSA	McIntosh	26 min
May 12, 12:43 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Sequoyah	47 min
May 12, 1:53 AM CDT	Special Weather Statement	TSA	Delaware	37 min
May 12, 2:14 AM CDT	Special Weather Statement	TSA	Haskell, Pittsburg, Sequoyah	31 min
May 12, 2:16 AM CDT	Special Weather Statement	TSA	Delaware	44 min
May 12, 2:33 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	27 min
May 12, 2:39 AM CDT	Special Weather Statement	TSA	Pittsburg	36 min
May 12, 2:42 AM CDT	Special Weather Statement	TSA	Haskell	33 min
May 12, 2:55 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	35 min
May 12, 2:58 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	32 min
May 12, 3:11 AM CDT	Special Weather Statement	TSA	Haskell, Pittsburg	34 min
May 12, 3:17 AM CDT	Areal Flood Warning	TSA	Adair, Cherokee, Muskogee, Sequoyah	12 hr
May 12, 3:21 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	14 min
May 12, 3:26 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Pittsburg, Pushmataha, Sequoyah	64 min
May 12, 4:05 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	40 min
May 12, 4:25 AM CDT	Special Weather Statement	TSA	Pushmataha	50 min
May 12, 3:47 PM CDT	River Flood Warning	TSA	LeFlore	25 hr
May 11, 9:41 PM CDT	Special Weather Statement	TSA	Washington	34 min
May 11, 9:58 PM CDT	Special Weather Statement	TSA	Washington	32 min
May 11, 10:07 PM CDT	Special Weather Statement	TSA	Crawford	23 min
May 11, 10:27 PM CDT	Special Weather Statement	TSA	Crawford	33 min
May 11, 10:40 PM CDT	Special Weather Statement	TSA	Washington	35 min
May 11, 11:08 PM CDT	Special Weather Statement	TSA	Madison	37 min
May 12, 12:15 AM CDT	Special Weather Statement	TSA	Sebastian	30 min
May 12, 12:18 AM CDT	Special Weather Statement	TSA	Benton	27 min
May 12, 1:34 AM CDT	Special Weather Statement	TSA	Madison	26 min
May 12, 1:50 AM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin	25 min
May 12, 2:05 AM CDT	Special Weather Statement	TSA	Franklin	25 min
May 12, 2:27 AM CDT	Special Weather Statement	TSA	Franklin	33 min
May 12, 3:16 AM CDT	Special Weather Statement	TSA	Sebastian	29 min

Nearby

Special Weather Statements in Oklahoma, 2016 Special Weather Statements in Arkansas, 2016 Every special weather statement in 2016

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.