Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 237, NWS Norman, OK

May 7, 2020Ellis County, Roger Mills County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 7, 2020, 11:00 PM CDT for Ellis County, Roger Mills County, Oklahoma. 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 counties it named.

The facts

Issued: May 7, 2020, 11:00 PM CDT (04:00 UTC)
Expired: May 7, 2020, 11:30 PM CDT
In force: 30 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Ellis County, OK, Roger Mills County, OK

The radar

The Vance AFB radar (KVNX), 168 km from the middle of the area, began a volume at 04:02 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 7, 7:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at May 7, 1:56 PM CDT, 9 hours 4 minutes earlier.

Area forecast discussion, May 7, 1:56 PM CDT, 9 hours 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>

Hazardous weather outlook, May 7, 3:43 PM CDT, 7 hours 17 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
343 PM CDT Thu May 7 2020

OKZ004>048-050>052-TXZ083>090-082045-
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-
343 PM CDT Thu May 7 2020

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

.DAY ONE...This Evening and Overnight...

.Thunderstorms...
There is an enhanced risk of severe thunderstorms this evening and
overnight across portions of central and southeastern Oklahoma.
There is a slight risk of severe thunderstorms across the
remainder of Oklahoma and western north Texas.

The enhanced risk is roughly the area south and southwest of a
line from Watonga to Kingfisher to Shawnee to Daisy Oklahoma, and
east and northeast of a line from Watonga to Anadarko to Ardmore.

Thunderstorms may initially develop late this afternoon or early
evening across southwest Oklahoma and western sections of north
Texas. These storms will move southeast and be capable of
producing hail up to the size of baseballs and wind gusts of 60 to
80 mph.

More storms are expected to develop across northwest Oklahoma in
the early to mid evening hours. These storms will likely expand
to become a thunderstorm complex and move southeast across central
and southern Oklahoma. The main risk will be damaging wind gusts
of 60 to 80 mph, but hail up to golf ball size will also be
possible.

.Heavy rain...
Heavy rain is also a possibility late tonight into early Friday
morning. Some urban and small stream flooding may occur over parts
of south-central and southeast Oklahoma.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

.Thunderstorms...
There will be a chance of storms again from Monday through
Wednesday. The risk of severe storms will be low on Monday, then
begin to increase each day.

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

In the hours before

Local storm report, May 7, 6:30 PM CDT, 4 hours 30 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, May 7, 6:34 PM CDT, 4 hours 26 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, May 7, 6:37 PM CDT, 4 hours 23 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, May 7, 6:40 PM CDT, 4 hours 20 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, May 7, 6:43 PM CDT, 4 hours 17 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, May 7, 6:58 PM CDT, 4 hours 2 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
May 7, 7:01 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	29 min
May 7, 8:31 PM CDT	Special Weather Statement	OUN	Tillman	29 min
May 7, 9:07 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Kiowa, Tillman	27 min
May 7, 9:17 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	43 min
May 7, 9:55 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woods, Woodward	50 min
May 7, 9:57 PM CDT	Special Weather Statement	OUN	Harper	33 min
May 7, 10:09 PM CDT	Special Weather Statement	OUN	Pottawatomie	36 min
May 7, 10:33 PM CDT	Special Weather Statement	OUN	McClain	27 min
May 7, 10:39 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Ellis, Roger Mills	51 min
May 7, 10:40 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major	50 min
May 7, 10:56 PM CDT	Special Weather Statement	OUN	Blaine	34 min
May 7, 11:12 PM CDT	Special Weather Statement	OUN	Pottawatomie	33 min
May 7, 11:16 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	29 min
May 7, 11:17 PM CDT	Special Weather Statement	OUN	Carter	28 min
May 7, 11:18 PM CDT	Special Weather Statement	OUN	Oklahoma	27 min
May 7, 11:25 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Ellis, Roger Mills, Washita	50 min
May 7, 11:28 PM CDT	Special Weather Statement	OUN	Custer	32 min
May 7, 11:31 PM CDT	Areal Flood Advisory	OUN	Dewey, Ellis, Roger Mills	3 hr
May 7, 11:32 PM CDT	Special Weather Statement	OUN	Canadian	28 min
May 7, 11:44 PM CDT	Special Weather Statement	OUN	Lincoln	31 min
May 7, 11:44 PM CDT	Severe Thunderstorm Warning	OUN	Noble, Payne	36 min
May 8, 12:02 AM CDT	Special Weather Statement	OUN	Canadian, Oklahoma	28 min
May 8, 12:08 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Washita	52 min
May 8, 12:10 AM CDT	Severe Thunderstorm Warning	OUN	Canadian	50 min
May 8, 12:15 AM CDT	Special Weather Statement	OUN	Seminole	45 min
May 8, 12:22 AM CDT	Areal Flood Advisory	OUN	Canadian, Oklahoma	3 hr
May 8, 12:32 AM CDT	Special Weather Statement	OUN	Oklahoma	28 min
May 8, 12:34 AM CDT	Special Weather Statement	OUN	Grady	26 min
May 8, 12:40 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	38 min
May 8, 12:45 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa, Washita	45 min
May 8, 1:01 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	59 min
May 8, 1:09 AM CDT	Areal Flood Advisory	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	3 hr
May 8, 1:19 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	26 min
May 8, 1:27 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Cotton, Stephens	48 min
May 8, 1:31 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain, Pontotoc, Pottawatomie, Seminole	44 min
May 8, 1:45 AM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, McClain	30 min
May 8, 1:58 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes, Pontotoc, Seminole	62 min
May 8, 2:02 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Johnston, Murray, Pontotoc	43 min
May 8, 2:13 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Murray, Stephens	47 min
May 8, 2:30 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Carter, Coal, Johnston, Marshall and 2 more	60 min
May 8, 2:57 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Love, Marshall	63 min
May 8, 3:00 AM CDT	Severe Thunderstorm Warning	OUN	Atoka	15 min
May 8, 3:27 AM CDT	Wind Advisory	OUN	Cotton, Harmon, Jackson, Jefferson, Tillman	9 hr
May 8, 3:29 AM CDT	Special Weather Statement	OUN	Bryan	31 min
May 7, 7:25 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	50 min
May 7, 8:10 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Clay	65 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2020 Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.