Alert archive / Arkansas / Special Weather Statements in 2018

Special Weather Statement, NWS Tulsa, OK

October 7, 2018Benton County, Arkansas

NWS Tulsa, OK issued this special weather statement at Oct 7, 2018, 3:45 PM CDT for Benton County, Arkansas. It was in force for 30 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: Oct 7, 2018, 3:45 PM CDT (20:45 UTC)
Expired: Oct 7, 2018, 4:15 PM CDT
In force: 30 min
Issued by: NWS Tulsa, OK

County Benton County, AR

The radar

The Springfield radar (KSGF), 111 km from the middle of the area, began a volume at 20:47 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, 8.8 hours before the alert went out and 62 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: 723 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 857 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

As transmitted.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 Oct 7, 12:33 PM CDT, 3 hours 12 minutes earlier.

Area forecast discussion, Oct 7, 12:33 PM CDT, 3 hours 12 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
1233 PM CDT Sun Oct 7 2018

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
IFR/LIFR cigs will persist for the northeast OK TAF sites through
much of the afternoon with some improvement expected toward 00Z.
Scattered convection should continue for the afternoon and could
see some redevelopment later tonight especially across northeast
OK.

&&

.PREV DISCUSSION... /Issued 1054 AM CDT Sun Oct 7 2018/

..UPDATE...

DISCUSSION...
Scatteed areas of convection continue late this morning ahead of
a slowly retreating frontal boundary, with the greatest coverage
generally across northeast OK. CAM solutions suggest that the
activity will become more scattered going into the afternoon,
although the risk of locally heavy rain and isolated strong winds
will persist.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   71  81  70  79 /  40  20  40  80
FSM   68  85  69  83 /  20  10  20  30
MLC   71  82  70  78 /  40  20  20  60
BVO   69  81  69  77 /  50  30  50  80
FYV   69  81  68  79 /  20  10  20  30
BYV   68  83  68  81 /  20  10  10  30
MKO   69  83  69  80 /  30  10  20  50
MIO   69  82  69  79 /  40  20  20  50
F10   69  82  69  78 /  40  20  30  80
HHW   69  83  69  80 /  30  20  20  50

&&

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

AVIATION.....18

Hazardous weather outlook, Oct 7, 12:52 PM CDT, 2 hours 53 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
1252 PM CDT Sun Oct 7 2018

ARZ001-002-010-011-019-020-029-OKZ049-053>076-081030-
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 Sun Oct 7 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...Eastern Oklahoma and northwest Arkansas, mainly east of
    a Miami to McAlester line.
    ONSET...Ongoing.

HEAVY RAIN.
	RISK...Limited.
    AREA...Eastern Oklahoma.
    ONSET...Ongoing through tonight.

DISCUSSION...
A band of showers and thunderstorms stretching from far northeast
Oklahoma into southeast Oklahoma will continue to lift northeast
through the afternoon. Afternoon heating will help destabilize the
atmosphere and along with improved wind shear may help some storms
become better organized. A few marginally severe wind gusts will be
possible this afternoon and early evening. Locally heavy rainfall
will continue to be a possible, especially in areas that received
heavy rainfall on Saturday.

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

.DAYS TWO THROUGH SEVEN...Monday through Saturday.
MONDAY...Thunderstorm Potential.
TUESDAY...Thunderstorm Potential...Heavy Rain Potential.
WEDNESDAY...Thunderstorm Potential.
THURSDAY through SATURDAY...No Hazards.

EXTENDED DISCUSSION...
Abnormally high moisture values for this time of year will remain
in place through the middle of the week as a strong storm system
over the Desert Southwest slowly lifts northeast. The most
widespread rain will stay west of the area on Monday before
spreading east Tuesday and Tuesday night as a cold front pushes
through the region. Heavy rainfall with flooding will be possible
on Tuesday along with the possibility of a more organized line of
storms and the threat of damaging winds. Drier and much cooler
weather is expected for the end of the week.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Oct 7, 12:39 PM CDT, 3 hours 6 minutes before

Special Weather Statement
National Weather Service Tulsa OK
1239 PM CDT SUN OCT 7 2018

OKZ068-070-072-071830-
Muskogee OK-Sequoyah OK-Cherokee OK-
1239 PM CDT SUN OCT 7 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN SEQUOYAH...
SOUTHEASTERN CHEROKEE AND EAST CENTRAL MUSKOGEE COUNTIES UNTIL 130 PM
CDT...

At 1239 PM CDT, a strong thunderstorm was located near Webbers Falls,
moving northeast at 25 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations in or near the path include...
Vian...                           Gore...
Webbers Falls...                  Cookson...
Cherokee Landing State Park...    Greenleaf State Park...
Pumpkin Center...                 Lake Tenkiller State Park...
Box...

This includes Interstate 40 in Oklahoma between mile markers 280 and
294.

LAT...LON 3577 9481 3575 9481 3544 9502 3545 9502
      3546 9504 3545 9506 3543 9508 3541 9508
      3540 9510 3545 9526 3586 9508
TIME...MOT...LOC 1739Z 208DEG 24KT 3548 9513

Local storm report, Oct 7, 2:47 PM CDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
247 PM CDT SUN OCT 7 2018

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

0227 PM     HAIL             2 SSE ELDON             35.90N 94.83W
10/07/2018  E0.75 INCH       CHEROKEE           OK   TRAINED SPOTTER

            50 MPH WIND GUST ALSO REPORTED.

&&

RJS

Special weather statement, Oct 7, 2:59 PM CDT, 46 minutes before

Special Weather Statement
National Weather Service Tulsa OK
259 PM CDT SUN OCT 7 2018

ARZ001-072045-
Benton AR-
259 PM CDT SUN OCT 7 2018

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN BENTON COUNTY UNTIL 345
PM CDT...

At 259 PM CDT, a strong thunderstorm was located near Siloam Springs,
moving northeast at 30 mph.

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

Locations in or near the path include...
Bentonville...                    Siloam Springs...
Bella Vista...                    Gentry...
Gravette...                       Decatur...
West Siloam Springs...            Highfill...
Springtown...                     Hiwasse...
Miller...                         Centerton...
Fairmount...                      Vaughn...
Gallitin...

This includes Interstate 49 between mile markers 90 and 93.

LAT...LON 3615 9445 3618 9457 3625 9458 3650 9450
      3650 9409
TIME...MOT...LOC 1959Z 211DEG 27KT 3621 9450

Special weather statement, Oct 7, 3:45 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Tulsa OK
345 PM CDT SUN OCT 7 2018

ARZ001-072115-
Benton AR-
345 PM CDT SUN OCT 7 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BENTON COUNTY UNTIL
415 PM CDT...

At 345 PM CDT, a strong thunderstorm was located 4 miles northeast of
Rogers, moving north at 35 mph.

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

Locations in or near the path include...
Rogers...                         Pea Ridge...
Garfield...                       Gateway...
Avoca...                          Larue...
Hill Top...                       Walnut Hill...
Monte Ne...

LAT...LON 3627 9395 3630 9416 3650 9415 3650 9387
TIME...MOT...LOC 2045Z 189DEG 32KT 3637 9404

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 7, 12:39 PM CDT	Special Weather Statement	TSA	Sequoyah	51 min
Oct 7, 12:55 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Sequoyah	50 min
Oct 7, 1:45 PM CDT	Tornado Warning	TSA	Adair, Cherokee	30 min
Oct 7, 2:15 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Delaware	45 min
Oct 7, 2:41 PM CDT	Severe Thunderstorm Warning	TSA	Adair	34 min
Oct 7, 3:03 PM CDT	Severe Thunderstorm Warning	TSA	Adair	42 min
Oct 7, 4:24 PM CDT	Special Weather Statement	TSA	Latimer	36 min
Oct 7, 5:43 PM CDT	Special Weather Statement	TSA	Pushmataha	47 min
Oct 7, 6:20 PM CDT	Special Weather Statement	TSA	Pittsburg	40 min
Oct 7, 6:39 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	51 min
Oct 7, 2:59 PM CDT	Special Weather Statement	TSA	Benton	46 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.