Alert archive / Oklahoma / Areal Flood Advisories in 2021

Areal Flood Advisory 152, NWS Tulsa, OK

October 15, 20214 counties in Oklahoma; Crawford County, Sebastian County, Arkansas

NWS Tulsa, OK issued this areal flood advisory at Oct 15, 2021, 7:51 AM CDT for 4 counties in Oklahoma; Crawford County, Sebastian County, Arkansas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Oct 15, 2021, 7:51 AM CDT (12:51 UTC)
Expired: Oct 15, 2021, 10:14 AM CDT
In force: 2 hr
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Crawford County, AR, Sebastian County, AR, Haskell County, OK, LeFlore County, OK, Muskogee County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 35 km from the middle of the area, began a volume at 12:54 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, 0.9 hours before the alert went out and 193 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: 260 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 507 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -75 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -1.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood advisory 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 areal flood advisory went out at Oct 15, 6:10 AM CDT, 1 hour 41 minutes earlier.

Area forecast discussion, Oct 15, 6:10 AM CDT, 1 hour 41 minutes before

<!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>

Hazardous weather outlook, Oct 15, 6:12 AM CDT, 1 hour 39 minutes before

<!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>

In the hours before

Special weather statement, Oct 15, 4:02 AM CDT, 3 hours 49 minutes before

Special Weather Statement
National Weather Service Tulsa OK
402 AM CDT Fri Oct 15 2021

OKZ062-063-067>069-150945-
Adair OK-Cherokee OK-Delaware OK-Mayes OK-Wagoner OK-
402 AM CDT Fri Oct 15 2021

...Strong thunderstorms will impact portions of southern Delaware,
southeastern Mayes, northern Adair, southeastern Wagoner and northern
Cherokee Counties through 445 AM CDT...

At 402 AM CDT, Doppler radar indicated strong thunderstorms along a
line extending from 3 miles southeast of Salina to 3 miles south of
Hulbert. Movement was east at 40 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations in or near the path include...
Tahlequah...                      Siloam Springs...
Jay...                            Locust Grove...
Salina...                         West Siloam Springs...
Colcord...                        Kansas...
Okay...                           Hulbert...
Watts...                          Oaks...
Peggs...                          Rose...
Leach...                          Scraper...
Twin Oaks...                      Maysville...
Sportsmen Acres Community...      Sequoyah State Park...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3604 9454 3583 9537 3627 9529 3648 9461
TIME...MOT...LOC 0902Z 249DEG 33KT 3627 9510 3589 9516

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Special weather statement, Oct 15, 4:35 AM CDT, 3 hours 16 minutes before

Special Weather Statement
National Weather Service Tulsa OK
435 AM CDT Fri Oct 15 2021

ARZ001-002-010-011-019-OKZ063-068>070-072-074-151030-
Carroll AR-Madison AR-Benton AR-Washington AR-Crawford AR-Haskell OK-
Adair OK-Muskogee OK-Sequoyah OK-Cherokee OK-Delaware OK-
435 AM CDT Fri Oct 15 2021

...Strong thunderstorms will impact portions of Benton, western
Madison, northern Crawford, northwestern Carroll, Washington,
southeastern Delaware, northern Haskell, Sequoyah, Adair, eastern
Cherokee and southeastern Muskogee Counties through 530 AM CDT...

At 435 AM CDT, Doppler radar indicated strong thunderstorms along a
line extending from 7 miles west of Watts to 6 miles southeast of
Stilwell to 2 miles west of Sallisaw. Movement was east at 45 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down small tree limbs and blow
         around unsecured objects.

Locations in or near the path include...
Fayetteville...                   Springdale...
Rogers...                         Bentonville...
Siloam Springs...                 Sallisaw...
Stilwell...                       Huntsville...
Cedarville...                     Mountainburg...
Natural Dam...                    Lowell...
Farmington...                     Pea Ridge...
Prairie Grove...                  Gentry...
Elkins...                         Tontitown...
Bethel Heights...                 West Fork...

This includes the following highways,
 Interstate 40 in Oklahoma between mile markers 284 and 311.
 Interstate 49 between mile markers 27 and 91.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Tulsa.

&&

LAT...LON 3566 9400 3566 9407 3562 9408 3523 9534
      3544 9523 3580 9480 3607 9502 3650 9400
      3650 9384 3600 9375
TIME...MOT...LOC 0935Z 255DEG 38KT 3609 9470 3577 9453 3546 9483

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Special weather statement, Oct 15, 5:21 AM CDT, 2 hours 30 minutes before

Special Weather Statement
National Weather Service Tulsa OK
521 AM CDT Fri Oct 15 2021

ARZ001-002-010-011-019-020-029-OKZ072-151100-
Sebastian AR-Carroll AR-Madison AR-Benton AR-Washington AR-
Franklin AR-Crawford AR-Sequoyah OK-
521 AM CDT Fri Oct 15 2021

...Strong thunderstorms will impact portions of east central Benton,
Madison, Franklin, Crawford, southeastern Carroll, northern
Sebastian, eastern Washington and southeastern Sequoyah Counties
through 600 AM CDT...

At 520 AM CDT, Doppler radar indicated strong thunderstorms along a
line extending from near Springdale to 8 miles east of Winslow to 2
miles south of Muldrow. Movement was east at 55 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations in or near the path include...
Fort Smith...                     Fayetteville...
Springdale...                     Van Buren...
Ozark...                          Charleston...
Huntsville...                     Cedarville...
Mountainburg...                   Lowell...
Alma...                           Barling...
Muldrow...                        Roland...
Elkins...                         Bethel Heights...
Lavaca...                         Arkoma...
Mulberry...                       Dyer...

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 42.
 Interstate 40 in Oklahoma between mile markers 318 and 328.
 Interstate 540 between mile markers 1 and 13.
 Interstate 49 between mile markers 22 and 34, and between mile
markers 76 and 77.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3612 9348 3597 9345 3588 9352 3576 9352
      3577 9370 3537 9372 3537 9375 3542 9380
      3531 9381 3532 9392 3527 9392 3530 9444
      3538 9443 3537 9449 3530 9449 3534 9471
      3576 9405 3625 9418 3630 9330 3612 9330
TIME...MOT...LOC 1020Z 270DEG 49KT 3619 9410 3577 9399 3537 9462

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Special weather statement, Oct 15, 6:02 AM CDT, 1 hour 49 minutes before

Special Weather Statement
National Weather Service Tulsa OK
602 AM CDT Fri Oct 15 2021

ARZ002-011-020-151130-
Carroll AR-Madison AR-Franklin AR-
602 AM CDT Fri Oct 15 2021

...Strong thunderstorms will impact portions of eastern Madison, east
central Franklin and Carroll Counties through 630 AM CDT...

At 602 AM CDT, Doppler radar indicated strong thunderstorms along a
line extending from near Clifty to 4 miles southwest of Upper Buffalo
Wilderness Area to 5 miles north of Ozark. Movement was east at 75
mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations in or near the path include...
Berryville...                     Ozark...
Green Forest...                   Withrow Springs State Park...
Carrollton...                     Rudd...
Kingston...                       Marble...
Forum...                          Osage...
Rule...                           Clifty...
Rockhouse...                      Dryfork...
Red Star...                       Cabanal...
Metalton...                       Weathers...
Connor...                         Coin...

This includes Interstate 40 in Arkansas between mile markers 34 and
36.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3612 9348 3608 9348 3608 9345 3597 9345
      3592 9351 3576 9352 3577 9360 3587 9352
      3581 9357 3568 9370 3554 9370 3549 9389
      3588 9352 3628 9386 3650 9330 3612 9330
TIME...MOT...LOC 1102Z 248DEG 66KT 3623 9378 3588 9348 3556 9380

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

Local storm report, Oct 15, 6:22 AM CDT, 1 hour 29 minutes before

<!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>

Local storm report, Oct 15, 7:41 AM CDT, 10 minutes before

<!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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 14, 10:27 PM CDT	Dense Fog Advisory	TSA	Adair, Cherokee, Delaware	5 hr
Oct 15, 1:41 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	49 min
Oct 15, 1:44 AM CDT	Special Weather Statement	TSA	Creek, Tulsa	46 min
Oct 15, 2:26 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	49 min
Oct 15, 2:29 AM CDT	Special Weather Statement	TSA	Rogers, Tulsa	46 min
Oct 15, 2:37 AM CDT	Areal Flood Advisory	TSA	Creek, Osage, Tulsa	3 hr
Oct 15, 2:51 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okmulgee	39 min
Oct 15, 3:13 AM CDT	Special Weather Statement	TSA	Mayes, Rogers, Wagoner	47 min
Oct 15, 3:29 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, McIntosh, Muskogee, Wagoner	46 min
Oct 15, 3:32 AM CDT	Areal Flood Advisory	TSA	Muskogee, Okmulgee, Tulsa, Wagoner	118 min
Oct 15, 3:53 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Muskogee, Sequoyah	52 min
Oct 15, 4:02 AM CDT	Special Weather Statement	TSA	Delaware	43 min
Oct 15, 4:35 AM CDT	Special Weather Statement	TSA	Adair, Sequoyah	55 min
Oct 15, 5:21 AM CDT	Special Weather Statement	TSA	Crawford, Franklin, Madison	39 min
Oct 15, 5:32 AM CDT	Tornado Warning	TSA	Madison	26 min
Oct 15, 6:02 AM CDT	Special Weather Statement	TSA	Carroll	28 min

Nearby

Areal Flood Advisories in Oklahoma, 2021 Areal Flood Advisories in Arkansas, 2021 Every areal flood advisory in 2021

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.