Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

May 5, 2021Woods County, Woodward County, Oklahoma

NWS Norman, OK issued this special weather statement at May 5, 2021, 7:44 PM CDT for Woods County, Woodward County, Oklahoma. It was in force for 31 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 5, 2021, 7:44 PM CDT (00:44 UTC)
Expired: May 5, 2021, 8:15 PM CDT
In force: 31 min
Issued by: NWS Norman, OK

Counties Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 56 km from the middle of the area, began a volume at 00:48 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

Dodge City, (KDDC), launched 00:00Z, 0.7 hours before the alert went out and 153 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2147 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -131 m²/s²
0-3 km storm-relative helicity: -151 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 5, 7:12 PM CDT, 32 minutes earlier.

Area forecast discussion, May 5, 7:12 PM CDT, 32 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, May 5, 2:52 PM CDT, 4 hours 52 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
252 PM CDT Wed May 5 2021

OKZ004>048-050>052-TXZ083>090-062000-
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-
252 PM CDT Wed May 5 2021

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

.DAY ONE...Through Tonight...

.Thunderstorms...
Widely scattered thunderstorms are expected across portions of
western Oklahoma this evening. A few strong to marginally severe
thunderstorms are possible. Thunderstorms should gradually weaken
as they move eastward toward central Oklahoma overnight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

.Thunderstorms...
Thunderstorms are possible again on Friday and Friday night, with
isolated strong or marginally severe storms possible in northwest
Oklahoma on Friday evening. Thunderstorm chances persist each day
through Tuesday with the highest chances in central and eastern
Oklahoma, but these thunderstorms will not be widespread through
this time.

.Fire weather...
Fire weather conditions will be elevated over western Oklahoma
Friday afternoon and again Saturday afternoon with warm
temperatures, low humidity and breezy conditions.

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

Mahale

In the hours before

Special weather statement, May 5, 6:29 PM CDT, 1 hour 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
629 PM CDT Wed May 5 2021

OKZ004-005-060000-
Harper OK-Woods OK-
629 PM CDT Wed May 5 2021

...SIGNIFICANT WEATHER ADVISORY FOR Harper and northwestern Woods
Counties Until 700 PM CDT...

AT 627 PM CDT, a severe thunderstorm was located near Acres, moving
east at 50 MPH.

HAZARDS INCLUDE...
Hail up to the size of quarters...
Wind gusts to 60 MPH...

Locations impacted include...
Laverne, Buffalo, May, Rosston and Selman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the situation closely. Be ready to act quickly if a warning
is issued or if storms threaten you.

&&

LAT...LON 3700 9914 3679 9927 3680 9929 3675 9930
      3660 9939 3660 9998 3700 10000
TIME...MOT...LOC 2327Z 285DEG 43KT 3708 9985

WR

Special weather statement, May 5, 7:44 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
744 PM CDT Wed May 5 2021

OKZ004>006-010-011-060115-
Major OK-Woodward OK-Alfalfa OK-Harper OK-Woods OK-
744 PM CDT Wed May 5 2021

...SIGNIFICANT WEATHER ADVISORY FOR northwestern Major...Woodward...
northwestern Alfalfa...southeastern Harper and Woods Counties Until
815 PM CDT...

AT 742 PM CDT, strong thunderstorms were along a line extending from
9 miles southeast of Aetna to 3 miles northwest of Woodward, moving
southeast at 35 MPH.

HAZARDS INCLUDE...
Wind gusts to 50 MPH...

LAT...LON 3700 9837 3676 9830 3620 9900 3645 9957
      3700 9893
TIME...MOT...LOC 0042Z 304DEG 29KT 3695 9890 3647 9945

WR

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 8:18 PM CDT	Special Weather Statement	OUN	Alfalfa, Grant, Major	27 min
May 5, 8:29 PM CDT	Special Weather Statement	OUN	Harper	31 min
May 5, 8:56 PM CDT	Special Weather Statement	OUN	Ellis	34 min
May 5, 9:12 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	33 min
May 5, 10:03 PM CDT	Special Weather Statement	OUN	Roger Mills	27 min
May 5, 11:00 PM CDT	Special Weather Statement	OUN	Beckham	30 min
May 6, 12:37 AM CDT	Special Weather Statement	OUN	Beckham	23 min
May 6, 1:00 AM CDT	Special Weather Statement	OUN	Beckham, Greer	30 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.