Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

July 17, 2021Roger Mills County, Oklahoma

NWS Norman, OK issued this special weather statement at Jul 17, 2021, 1:08 PM CDT for Roger Mills County, Oklahoma. It was in force for 52 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 17, 2021, 1:08 PM CDT (18:08 UTC)
Expired: Jul 17, 2021, 2:00 PM CDT
In force: 52 min
Issued by: NWS Norman, OK

County Roger Mills County, OK

The radar

The Amarillo radar (KAMA), 179 km from the middle of the area, began a volume at 18:11 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 6.1 hours before the alert went out and 179 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: 746 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1445 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Norman, OK wrote its last area forecast discussion before this special weather statement went out at Jul 17, 6:09 AM CDT, 6 hours 59 minutes earlier.

Area forecast discussion, Jul 17, 6:09 AM CDT, 6 hours 59 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, Jul 17, 11:49 AM CDT, 1 hour 19 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
1149 AM CDT Sat Jul 17 2021

OKZ004>048-050>052-TXZ083>090-181700-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
1149 AM CDT Sat Jul 17 2021

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western north
Texas.

.DAY ONE...This Afternoon and Tonight...

.Thunderstorms...
Thunderstorms are expected this afternoon through this evening
across much of northern and central Oklahoma. Severe thunderstorms
capable of damaging wind gusts up to 60 mph and localized heavy
rainfall will be the main threats.

.Heat...
An increase in temperatures and dew point temperatures will lead
to heat index values of 100 to 105 degrees fahrenheit this
afternoon. Heat indices, combined with mostly sunny skies and
light winds, may lead to heat exhaustion or heat stroke. Limit
strenuous outdoor activities, find shade, and stay hydrated.

.DAYS TWO THROUGH SEVEN...Sunday through Friday...

.Thunderstorms...
Thunderstorm chances will continue across portions of our area
every day through next week. Some of the storms on Sunday could be
strong to marginally severe across northern Oklahoma with up to
quarter size hail and 60 mph wind gusts as the main hazards.
Flooding due to heavy rainfall will also be possible overnight
Sunday.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

In the hours before

Special weather statement, Jul 17, 11:29 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>

Special weather statement, Jul 17, 12:07 PM CDT, 1 hour 1 minute 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>

Special weather statement, Jul 17, 1:04 PM CDT, 4 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>

Special weather statement, Jul 17, 1:08 PM CDT, 0 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 Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 16, 8:21 PM CDT	Special Weather Statement	OUN	Johnston	24 min
Jul 16, 8:25 PM CDT	Special Weather Statement	OUN	Kay	35 min
Jul 16, 9:10 PM CDT	Areal Flood Advisory	OUN	Grant, Kay	3 hr
Jul 16, 9:31 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay	59 min
Jul 16, 10:08 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	52 min
Jul 16, 10:51 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Major	39 min
Jul 16, 11:23 PM CDT	Areal Flood Advisory	OUN	Alfalfa, Garfield, Grant	3 hr
Jul 16, 11:41 PM CDT	Special Weather Statement	OUN	Kay	34 min
Jul 16, 11:47 PM CDT	Severe Thunderstorm Warning	OUN	Kay	26 min
Jul 17, 12:09 AM CDT	Areal Flood Advisory	OUN	Kay	3 hr
Jul 17, 12:25 AM CDT	Special Weather Statement	OUN	Kay	35 min
Jul 17, 11:29 AM CDT	Special Weather Statement	OUN	Alfalfa	46 min
Jul 17, 12:07 PM CDT	Special Weather Statement	OUN	Major	38 min
Jul 17, 12:18 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods	27 min
Jul 17, 12:24 PM CDT	Areal Flood Advisory	OUN	Alfalfa, Major, Woods	3 hr
Jul 17, 12:44 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher, Major	46 min
Jul 17, 1:04 PM CDT	Special Weather Statement	OUN	Dewey	26 min
Jul 17, 1:23 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	17 min
Jul 17, 1:32 PM CDT	Areal Flood Advisory	OUN	Blaine, Garfield, Kingfisher, Logan, Major	3 hr
Jul 17, 1:36 PM CDT	Areal Flood Advisory	OUN	Blaine, Dewey	3 hr
Jul 17, 1:43 PM CDT	Special Weather Statement	OUN	Logan	47 min
Jul 17, 1:47 PM CDT	Special Weather Statement	OUN	Kingfisher	43 min
Jul 17, 1:58 PM CDT	Special Weather Statement	OUN	Blaine	32 min
Jul 17, 2:10 PM CDT	Special Weather Statement	OUN	Ellis	35 min
Jul 17, 2:21 PM CDT	Special Weather Statement	OUN	Canadian, Logan	24 min
Jul 17, 2:24 PM CDT	Areal Flood Advisory	OUN	Kingfisher, Logan	3 hr
Jul 17, 2:39 PM CDT	Special Weather Statement	OUN	Canadian	66 min
Jul 17, 2:42 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	36 min
Jul 17, 2:44 PM CDT	Areal Flood Advisory	OUN	Dewey, Ellis, Roger Mills, Woodward	3 hr
Jul 17, 2:48 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	42 min
Jul 17, 2:57 PM CDT	Areal Flood Advisory	OUN	Blaine, Caddo	3 hr
Jul 17, 3:06 PM CDT	Areal Flood Advisory	OUN	Canadian, Kingfisher	3 hr
Jul 17, 3:12 PM CDT	Special Weather Statement	OUN	Logan	48 min
Jul 17, 3:21 PM CDT	Special Weather Statement	OUN	Caddo	54 min
Jul 17, 3:32 PM CDT	Special Weather Statement	OUN	Oklahoma	58 min
Jul 17, 3:33 PM CDT	Special Weather Statement	OUN	Canadian	27 min
Jul 17, 3:38 PM CDT	Areal Flood Advisory	OUN	Oklahoma	112 min
Jul 17, 4:01 PM CDT	Special Weather Statement	OUN	Caddo	44 min
Jul 17, 4:03 PM CDT	Special Weather Statement	OUN	Grady	42 min
Jul 17, 4:30 PM CDT	Special Weather Statement	OUN	Greer	45 min
Jul 17, 4:34 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady, Kiowa	41 min
Jul 17, 4:43 PM CDT	Special Weather Statement	OUN	Cleveland	62 min
Jul 17, 4:53 PM CDT	Special Weather Statement	OUN	Greer	67 min
Jul 17, 5:06 PM CDT	Severe Thunderstorm Warning	OUN	Harmon	37 min
Jul 17, 5:41 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	49 min
Jul 17, 6:50 PM CDT	Special Weather Statement	OUN	Cotton	25 min
Jul 17, 5:30 PM CDT	Special Weather Statement	OUN	Wichita	30 min
Jul 17, 5:37 PM CDT	Special Weather Statement	OUN	Wichita	23 min
Jul 17, 6:18 PM CDT	Special Weather Statement	OUN	Hardeman	42 min

Nearby

Special Weather Statements in Oklahoma, 2021 Every special weather statement 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.