Alert archive / Arkansas / Special Weather Statements in 2017

Special Weather Statement, NWS Tulsa, OK

July 8, 2017Sebastian County, Arkansas

NWS Tulsa, OK issued this special weather statement at Jul 8, 2017, 6:14 AM CDT for Sebastian County, Arkansas. It was in force for 46 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: Jul 8, 2017, 6:14 AM CDT (11:14 UTC)
Expired: Jul 8, 2017, 7:00 AM CDT
In force: 46 min
Issued by: NWS Tulsa, OK

County Sebastian County, AR

The radar

The Western Arkansas radar (KSRX), 23 km from the middle of the area, began a volume at 11:16 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 11.2 hours before the alert went out and 195 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: 1004 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 1929 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 8, 3:29 AM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, Jul 8, 3:29 AM CDT, 2 hours 45 minutes before

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</head>
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      <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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Hazardous weather outlook, Jul 8, 4:55 AM CDT, 1 hour 19 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
455 AM CDT Sat Jul 8 2017

ARZ001-002-010-011-019-020-029-OKZ049-053>076-091000-
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-
455 AM CDT Sat Jul 8 2017

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...Mainly south of Interstate 40.
	ONSET...Ongoing and again later this Afternoon.

DANGEROUS HEAT.
	RISK...Limited.
	AREA...Southeast Oklahoma and west-central Arkansas.
	ONSET...This Afternoon.

DISCUSSION...
A thunderstorm complex will exit western Arkansas this morning with
another complex decaying across portions of central Oklahoma with a few
storms possibly straying into northeast Oklahoma before diminishing.
Additional thunderstorms are expected to develop this afternoon in
the vicinity of the outflow boundaries left over from the morning storms.
The storms this afternoon will have the potential to become strong to
severe with strong gusty winds and large hail the main concern. Locally
heavy rainfall will also be possible.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.
SUNDAY...Thunderstorm Potential.
MONDAY through Friday...No Hazards.

EXTENDED DISCUSSION...
The potential for thunderstorms will continue on Sunday especially
across southeast Oklahoma and west-central Arkansas in the vicinity
of any outflow boundaries.

High pressure will prevail for the work week with a return of hot
temperatures. High temperatures each afternoon will be in the 90s across
much of eastern Oklahoma and western Arkansas.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Jul 8, 2:21 AM CDT, 3 hours 53 minutes before

Special Weather Statement
National Weather Service Tulsa OK
221 AM CDT SAT JUL 8 2017

OKZ063-080745-
Delaware OK-
221 AM CDT SAT JUL 8 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN DELAWARE COUNTY
UNTIL 245 AM CDT...

At 221 AM CDT, a strong thunderstorm was located 4 miles south of
Bernice, moving southeast at 20 mph.

Dime size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations in or near the path include...
Jay...                            Grove...
Bernice...                        Cleora...
Honey Creek State Park...         Bernice State Park...
Zena...

LAT...LON 3667 9485 3647 9468 3638 9490 3653 9501
      3658 9500
TIME...MOT...LOC 0721Z 327DEG 17KT 3656 9490

Special weather statement, Jul 8, 2:56 AM CDT, 3 hours 18 minutes before

Special Weather Statement
National Weather Service Tulsa OK
256 AM CDT SAT JUL 8 2017

ARZ019-020-029-080830-
Sebastian AR-Franklin AR-Crawford AR-
256 AM CDT SAT JUL 8 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN FRANKLIN...SOUTHERN
CRAWFORD AND NORTHERN SEBASTIAN COUNTIES UNTIL 330 AM CDT...

At 256 AM CDT, strong thunderstorms were located along a line
extending from 5 miles southwest of Ozark to 3 miles northwest of Van
Buren. Movement was southeast at 15 mph.

Dime size hail and winds in excess of 40 mph will be possible with
these storms.

Locations in or near the path include...
Fort Smith...                     Van Buren...
Ozark...                          Charleston...
Alma...                           Barling...
Lavaca...                         Mulberry...
Dyer...                           Branch...
Denning...                        Rudy...
Bloomer...                        Figure Five...
Kibler...                         Central City...
Concord...                        Caulksville...
Shibley...                        Vesta...

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 1 and 36.
 Interstate 540 between mile markers 1 and 14.
 Interstate 49 between mile markers 22 and 24.

LAT...LON 3537 9375 3538 9376 3540 9379 3542 9380
      3531 9381 3532 9392 3525 9392 3527 9442
      3554 9443 3555 9384 3537 9373
TIME...MOT...LOC 0756Z 325DEG 12KT 3542 9388 3547 9440

Special weather statement, Jul 8, 3:50 AM CDT, 2 hours 24 minutes before

Special Weather Statement
National Weather Service Tulsa OK
350 AM CDT SAT JUL 8 2017

ARZ001-OKZ063-080930-
Benton AR-Delaware OK-
350 AM CDT SAT JUL 8 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL BENTON AND
SOUTHEASTERN DELAWARE COUNTIES UNTIL 430 AM CDT...

At 350 AM CDT, a strong thunderstorm was located 5 miles southeast of
Jay, moving southeast at 20 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations in or near the path include...
Siloam Springs...                 Jay...
Gentry...                         Decatur...
West Siloam Springs...            Colcord...
Springtown...                     Maysville...
Lake Eucha State Park...          Cherokee City...

LAT...LON 3627 9439 3616 9462 3616 9465 3638 9486
      3649 9468
TIME...MOT...LOC 0850Z 321DEG 18KT 3639 9472

Special weather statement, Jul 8, 4:04 AM CDT, 2 hours 10 minutes before

Special Weather Statement
National Weather Service Tulsa OK
404 AM CDT SAT JUL 8 2017

ARZ019-020-029-080945-
Sebastian AR-Franklin AR-Crawford AR-
404 AM CDT SAT JUL 8 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN FRANKLIN...SOUTH
CENTRAL CRAWFORD AND NORTHEASTERN SEBASTIAN COUNTIES UNTIL 445 AM
CDT...

At 403 AM CDT, a strong thunderstorm was located over Lavaca, moving
southeast at 25 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations in or near the path include...
Charleston...                     Greenwood...
Lavaca...                         Branch...
Bloomer...                        Washburn...
Burnville...                      Fort Chaffee...
Central City...                   Milltown...
Vesta...                          Ursula...

LAT...LON 3523 9403 3514 9403 3514 9414 3510 9414
      3510 9416 3509 9416 3509 9417 3537 9429
      3544 9409 3526 9392 3523 9392
TIME...MOT...LOC 0903Z 329DEG 23KT 3534 9416

Special weather statement, Jul 8, 5:09 AM CDT, 1 hour 5 minutes before

Special Weather Statement
National Weather Service Tulsa OK
509 AM CDT SAT JUL 8 2017

ARZ029-081030-
Sebastian AR-
509 AM CDT SAT JUL 8 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL SEBASTIAN COUNTY
UNTIL 530 AM CDT...

At 509 AM CDT, a strong thunderstorm was located 3 miles south of
Burnville, moving southeast at 25 mph.

Dime size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations in or near the path include...
Mansfield...                      Washburn...
Burnville...                      Milltown...
Crossroads...                     Witcherville...
Dayton...

LAT...LON 3514 9403 3514 9414 3510 9414 3510 9416
      3509 9416 3509 9419 3508 9420 3508 9422
      3507 9422 3507 9423 3514 9428 3523 9412
      3516 9403
TIME...MOT...LOC 1009Z 323DEG 20KT 3513 9419

Special weather statement, Jul 8, 6:14 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Tulsa OK
614 AM CDT SAT JUL 8 2017

ARZ019-020-029-081200-
Sebastian AR-Franklin AR-Crawford AR-
614 AM CDT SAT JUL 8 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN FRANKLIN...SOUTH
CENTRAL CRAWFORD AND SEBASTIAN COUNTIES UNTIL 700 AM CDT...

At 614 AM CDT, strong thunderstorms were located along a line
extending from 4 miles east of Lavaca to 4 miles southeast of Arkoma.
Movement was southeast at 25 mph.

Dime size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations in or near the path include...
Fort Smith...                     Charleston...
Greenwood...                      Barling...
Lavaca...                         Mansfield...
Huntington...                     Branch...
Bloomer...                        Washburn...
Excelsior...                      Burnville...
Fort Chaffee...                   Jenny Lind...
Central City...                   Crossroads...
Witcherville...                   Dayton...
Mill Creek...                     Milltown...

This includes Interstate 540 between mile markers 9 and 14.

LAT...LON 3523 9402 3514 9403 3514 9414 3510 9414
      3509 9419 3508 9420 3508 9422 3506 9425
      3506 9423 3505 9423 3504 9427 3532 9443
      3535 9443 3541 9405 3528 9392 3523 9392
TIME...MOT...LOC 1114Z 325DEG 23KT 3535 9410 3531 9440

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 8:58 PM CDT	Special Weather Statement	TSA	Mayes	47 min
Jul 7, 10:10 PM CDT	Special Weather Statement	TSA	Mayes	50 min
Jul 8, 12:25 AM CDT	Special Weather Statement	TSA	Ottawa	35 min
Jul 8, 12:57 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	48 min
Jul 8, 1:27 AM CDT	Severe Thunderstorm Warning	TSA	Delaware	33 min
Jul 8, 1:43 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware	29 min
Jul 8, 2:21 AM CDT	Special Weather Statement	TSA	Delaware	24 min
Jul 8, 3:38 AM CDT	Areal Flood Advisory	TSA	Delaware	3 hr
Jul 8, 3:50 AM CDT	Special Weather Statement	TSA	Delaware	40 min
Jul 8, 4:30 AM CDT	Areal Flood Advisory	TSA	Sequoyah	3 hr
Jul 8, 7:28 AM CDT	Special Weather Statement	TSA	Washington	47 min
Jul 8, 7:54 AM CDT	Special Weather Statement	TSA	Mayes, Rogers, Tulsa, Wagoner	51 min
Jul 8, 10:01 AM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, LeFlore, Pittsburg, Pushmataha	3 hr
Jul 7, 10:43 PM CDT	Special Weather Statement	TSA	Benton	32 min
Jul 8, 12:08 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison	37 min
Jul 8, 12:36 AM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison	54 min
Jul 8, 12:47 AM CDT	Special Weather Statement	TSA	Benton	43 min
Jul 8, 1:00 AM CDT	Areal Flood Advisory	TSA	Benton, Carroll, Madison	4 hr
Jul 8, 1:02 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison	28 min
Jul 8, 2:00 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	45 min
Jul 8, 2:27 AM CDT	Severe Thunderstorm Warning	TSA	Madison, Washington	33 min
Jul 8, 2:56 AM CDT	Special Weather Statement	TSA	Franklin	34 min
Jul 8, 4:04 AM CDT	Special Weather Statement	TSA	Sebastian	41 min
Jul 8, 5:09 AM CDT	Special Weather Statement	TSA	Sebastian	21 min
Jul 8, 6:34 AM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	41 min
Jul 8, 7:14 AM CDT	Special Weather Statement	TSA	Sebastian	31 min
Jul 8, 7:16 AM CDT	Special Weather Statement	TSA	Crawford	59 min

Nearby

Special Weather Statements in Arkansas, 2017 Every special weather statement in 2017

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.