Alert archive / Arkansas / Special Weather Statements in 2018

Special Weather Statement, NWS Tulsa, OK

May 25, 2018Franklin County, Arkansas

NWS Tulsa, OK issued this special weather statement at May 25, 2018, 3:16 PM CDT for Franklin County, Arkansas. It was in force for 29 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 25, 2018, 3:16 PM CDT (20:16 UTC)
Expired: May 25, 2018, 3:45 PM CDT
In force: 29 min
Issued by: NWS Tulsa, OK

County Franklin County, AR

The radar

The Western Arkansas radar (KSRX), 27 km from the middle of the area, began a volume at 20:19 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 12:00Z, 8.3 hours before the alert went out and 166 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: 740 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 992 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 36 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 May 25, 12:10 PM CDT, 3 hours 6 minutes earlier.

Area forecast discussion, May 25, 12:10 PM CDT, 3 hours 6 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
1210 PM CDT Fri May 25 2018

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Scattered storms will continue into the afternoon across all
of the area, but will only include VCTS. Will have a later time
for VCTS mention across the AR sites with less coverage expected
for the first part of the afternoon Expect ongoing convection to
dissipate between 00-02z. VFR elements expected to prevail for the
entire TAF period.

&&

.PREV DISCUSSION... /Issued 1010 AM CDT Fri May 25 2018/

DISCUSSION...
Remnant MCS moving into SE OK this morning. Additional convection
in association with an MCV has developed back further to the
northwest, so have adjusted pops, mainly west of Highway 69 for
this morning. As of now, will leave the broad brush chance pops
after 18z as daytime heating interacts with residual boundaries
and lingering MCV(s), thus serving as a focus for afternoon
storms. Have lowered temps a degree or so for much of the area
given the amount of debris clouds expected to last into the
afternoon hours.

Updated ZFP/PFM/AFM out shortly.

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...None.
AR...None.
&&

AVIATION.....23

Hazardous weather outlook, May 25, 12:52 PM CDT, 2 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
1252 PM CDT Fri May 25 2018

ARZ001-002-010-011-019-020-029-OKZ049-053>076-261030-
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-
1252 PM CDT Fri May 25 2018

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...This Afternoon and Tonight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Far eastern Oklahoma and northwest Arkansas
	ONSET...This Afternoon, but diminishing this evening

HEAVY RAIN.
	RISK...Limited.
	AREA...Isolated locations across far eastern Oklahoma and
           northwest Arkansas.
	ONSET...This Afternoon.

DISCUSSION...
Scattered thunderstorms will likely remain ongoing, mainly
across far eastern Oklahoma and northwest Arkansas into the evening hours.
Remnant outflow boundaries from previous thunderstorms will serve as a
focus new development later this afternoon. Storm development in
areas with greater instability will support an isolated severe
threat, with locally damaging winds possible. The risk of severe
weather will begin to diminish this evening.

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

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
SATURDAY...Thunderstorm Potential.
SUNDAY through THURSDAY...No Hazards.

EXTENDED DISCUSSION...
Isolated thunderstorms will be possible Saturday with a trend
toward drier and hotter conditions for early next week.
The developing weather pattern will continue to favor much
above normal temperatures for next week.  Early season
heat stress impacts are possible with afternoon heat
index values near 100 degrees for several days next week.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, May 25, 11:58 AM CDT, 3 hours 18 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1158 AM CDT FRI MAY 25 2018

OKZ049-053-251745-
Choctaw OK-Pushmataha OK-
1158 AM CDT FRI MAY 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PUSHMATAHA AND
EASTERN CHOCTAW COUNTIES UNTIL 1245 PM CDT...

At 1158 AM CDT, a strong thunderstorm was located near Antlers,
moving southeast at 15 mph.

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

Locations in or near the path include...
Hugo...                           Antlers...
Hugo Lake State Park...           Kent...
Kellond...                        Goodland...
Messer...                         Apple...
Speer...                          Dela...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3420 9578 3431 9561 3408 9533 3393 9556
      3393 9559 3394 9560 3393 9560
TIME...MOT...LOC 1658Z 322DEG 12KT 3420 9565

Special weather statement, May 25, 3:16 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Tulsa OK
316 PM CDT FRI MAY 25 2018

ARZ019-020-029-252045-
Sebastian AR-Franklin AR-Crawford AR-
316 PM CDT FRI MAY 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL FRANKLIN...
SOUTHEASTERN CRAWFORD AND NORTHEASTERN SEBASTIAN COUNTIES UNTIL 345
PM CDT...

At 316 PM CDT, a strong thunderstorm was located 4 miles northeast of
Lavaca, moving northeast at 15 mph.

Dime size hail and winds in excess of 40 mph will be possible with
this storm.

Locations in or near the path include...
Alma...                           Lavaca...
Mulberry...                       Dyer...
Kibler...                         Piney...
Vesta...                          Cecil...

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 11 and 26.
 Interstate 49 near mile marker 22.

LAT...LON 3532 9418 3551 9427 3561 9404 3538 9389
TIME...MOT...LOC 2016Z 242DEG 14KT 3540 9414

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 11:58 AM CDT	Special Weather Statement	TSA	Choctaw	47 min
May 25, 3:22 PM CDT	Special Weather Statement	TSA	Washington	38 min
May 25, 3:27 PM CDT	Special Weather Statement	TSA	Crawford	33 min
May 25, 3:38 PM CDT	Special Weather Statement	TSA	Franklin	37 min
May 25, 3:52 PM CDT	Special Weather Statement	TSA	Franklin	38 min
May 25, 4:03 PM CDT	Special Weather Statement	TSA	Madison	42 min
May 25, 4:24 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison, Washington	16 min
May 25, 4:43 PM CDT	Special Weather Statement	TSA	Madison	32 min

Nearby

Special Weather Statements in Arkansas, 2018 Every special weather statement in 2018

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.