Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 87, NWS Norman, OK

April 9, 2013Archer County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Apr 9, 2013, 7:14 PM CDT for Archer County, Texas. It was in force for 61 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: Apr 9, 2013, 7:14 PM CDT (00:14 UTC)
Expired: Apr 9, 2013, 8:15 PM CDT
In force: 61 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

County Archer County, TX

The radar

The Altus AFB radar (KFDR), 87 km from the middle of the area, began a volume at 00:16 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
Apr 9, 5:33 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 Apr 9, 6:24 PM CDT, 50 minutes earlier.

Area forecast discussion, Apr 9, 6:24 PM CDT, 50 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, Apr 9, 12:12 PM CDT, 7 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1212 PM CDT TUE APR 9 2013

OKZ004>048-050>052-TXZ083>090-101000-
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-
1212 PM CDT TUE APR 9 2013

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
SCATTERED SEVERE THUNDERSTORMS ARE EXPECTED THROUGH TONIGHT.
A SLIGHT RISK FOR SEVERE THUNDERSTORMS IS IN EFFECT FOR MUCH
OF OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
THE SLIGHT RISK COVERS LOCATIONS EAST OF A LINE EXTENDING FROM
ALVA...TO ALTUS...TO KNOX CITY TEXAS.

TIMING...
THE BEST TIME FRAME FOR SEVERE THUNDERSTORMS WILL BE THROUGH
MIDNIGHT CDT TONIGHT.

IMPACTS...
HAIL UP TO THE SIZE OF BASEBALLS...WIND GUSTS 70 TO 80 MPH...AND
TORNADOES WILL BE POSSIBLE WITH DISCRETE SUPERCELLS. DAMAGING WIND
GUSTS AND LARGE HAIL WILL BE THE GREATEST CONCERNS WITH STORMS ALONG
A COLD FRONT. LARGE HAIL WILL BE THE BIGGEST HAZARD BEHIND A
COLD FRONT.

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREA SHOULD PLAN FOR THE POTENTIAL OF SEVERE WEATHER OPERATIONS
THIS AFTERNOON THROUGH TONIGHT.

DISCUSSION...
SCATTERED STRONG TO SEVERE THUNDERSTORMS ARE ANTICIPATED THIS AFTERNOON
AND TONIGHT AS LIFT FROM AN APPROACHING LOW PRESSURE SYSTEM...DRYLINE...
AND COLD FRONT COMBINES WITH ABUNDANT MOISTURE IN A MODERATELY
UNSTABLE ATMOSPHERE.

ALTHOUGH DAMAGING WIND GUSTS AND LARGE HAIL APPEAR TO BE THE PRIMARY
CONCERNS THIS AFTERNOON AND TONIGHT...THERE WILL BE A LOW TORNADO THREAT
AS WELL. THE GREATEST TORNADO THREAT WILL BE ASSOCIATED WITH ANY DISCRETE
STORM AHEAD OF THE DRYLINE AND COLD FRONT. THIS HEIGHTENED CONCERN IS
EXPECTED MAINLY OVER SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS BETWEEN
1 PM AND 9 PM CDT...ESPECIALLY NEAR THE INTERSECTION OF THE DRYLINE AND
COLD FRONT. AS THE EVENING PROGRESSES...THUNDERSTORMS ARE EXPECTED TO
BECOME WIDESPREAD NEAR AND BEHIND THE COLD FRONT AS IT MOVES FROM NORTHWEST
TO SOUTHEAST. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY CONCERNS
WITH THE STORMS ALONG THE FRONT WHILE LARGE HAIL IS POSSIBLE WITH ELEVATED
STORMS BEHIND THE COLD FRONT. THE SEVERE THREAT WILL SLOWLY DIMINISH AFTER
MIDNIGHT CDT...ESPECIALLY AS MOST CONVECTION WILL BE ELEVATED AND ON THE
COLD SIDE OF THE COLD FRONT.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT WEDNESDAY APR 10.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...90 PERCENT.

OTHER HAZARDOUS WEATHER...
AREAS OF FREEZING RAIN...SLEET...AND PERHAPS SNOW ARE EXPECTED ACROSS
THE NORTHWEST HALF OF OKLAHOMA AND FAR WESTERN NORTH TEXAS...MAINLY
NORTHWEST OF I-44...AFTER 9 PM CDT. SOME ICE ACCUMULATIONS ARE
POSSIBLE ON TREES...POWERLINES...AND OTHER ELEVATED OBJECTS. ROADS...
BRIDGES...AND OVERPASSES MAY BECOME ICY ACROSS NORTHWEST OKLAHOMA
LATE TONIGHT.

SUBFREEZING TEMPERATURES WILL OCCUR TONIGHT ACROSS THE NORTHWEST HALF
OF OKLAHOMA AND FAR WESTERN NORTH TEXAS...MAINLY NORTHWEST OF I-44.
TENDER PLANTS WILL NEED TO BE COVERED OR BROUGHT INDOORS.

HEAVY PRECIPITATION THROUGH TONIGHT MAY CAUSE LOCALIZED FLOODING.

WINDY CONDITIONS WITH GUSTS UP TO 50 MPH MAY OCCUR THROUGH TONIGHT
AWAY FROM THUNDERSTORMS ACROSS WESTERN OKLAHOMA AND WESTERN NORTH
TEXAS BEHIND THE PASSAGE OF A STRONG COLD FRONT.

ELEVATED FIRE WEATHER CONDITIONS ARE POSSIBLE ACROSS FAR WESTERN
NORTH TEXAS THROUGH 8 PM CDT BEHIND A DRYLINE AND AHEAD OF A COLD
FRONT DUE TO BREEZY TO WINDY CONDITIONS...LOW HUMIDITY...AND VERY
WARM TEMPERATURES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

THUNDERSTORM OUTLOOK...
A FEW THUNDERSTORMS MAY LINGER ACROSS FAR SOUTHERN AND SOUTHEAST
OKLAHOMA ON WEDNESDAY...BUT ARE NOT EXPECTED TO BE SEVERE.

STORM CHANCES RETURN ON SATURDAY...HOWEVER ORGANIZED SEVERE WEATHER
IS NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
AREAS OF FREEZING RAIN...SLEET...AND PERHAPS SNOW ARE EXPECTED ACROSS
THE NORTHWEST HALF OF OKLAHOMA AND FAR WESTERN NORTH TEXAS...MAINLY
NORTHWEST OF I-44...WEDNESDAY MORNING. SOME ICE ACCUMULATIONS ARE
POSSIBLE ON TREES...POWERLINES...AND OTHER ELEVATED OBJECTS. ROADS...
BRIDGES...AND OVERPASSES MAY BE ICY ACROSS NORTHWEST OKLAHOMA
WEDNESDAY MORNING.

SUBFREEZING TEMPERATURES WILL OCCUR WEDNESDAY MORNING ACROSS THE
NORTHWEST HALF OF OKLAHOMA AND FAR WESTERN NORTH TEXAS...MAINLY
NORTHWEST OF I-44...AND WILL BE POSSIBLE AGAIN ON THURSDAY MORNING
ACROSS MUCH OF NORTHERN...CENTRAL AND WESTERN OKLAHOMA. TENDER PLANTS
WILL NEED TO BE COVERED OR BROUGHT INDOORS.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY 5 AM
CDT WEDNESDAY...WITH UPDATES AS NEEDED.

11/26/MBS

In the hours before

Special weather statement, Apr 9, 6:02 PM CDT, 1 hour 12 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, Apr 9, 6:08 PM CDT, 1 hour 6 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, Apr 9, 6:14 PM CDT, 1 hour 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, Apr 9, 6:30 PM CDT, 44 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, Apr 9, 6:44 PM CDT, 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, Apr 9, 7:10 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 7:25 PM CDT	Special Weather Statement	OUN	Beckham	35 min
Apr 9, 7:33 PM CDT	Special Weather Statement	OUN	Ellis, Harper, Roger Mills, Woodward	42 min
Apr 9, 8:12 PM CDT	Special Weather Statement	OUN	Beckham, Ellis, Roger Mills, Woodward	48 min
Apr 9, 9:37 PM CDT	Special Weather Statement	OUN	Alfalfa, Major	23 min
Apr 9, 9:45 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	45 min
Apr 9, 10:07 PM CDT	Special Weather Statement	OUN	Blaine, Custer, Washita	23 min
Apr 9, 10:13 PM CDT	Special Weather Statement	OUN	Jefferson	32 min
Apr 9, 10:21 PM CDT	Special Weather Statement	OUN	Comanche	24 min
Apr 9, 10:39 PM CDT	Special Weather Statement	OUN	Kiowa	36 min
Apr 9, 10:55 PM CDT	Special Weather Statement	OUN	Blaine	35 min
Apr 9, 11:06 PM CDT	Special Weather Statement	OUN	Caddo	24 min
Apr 9, 11:25 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Custer, Washita	50 min
Apr 10, 12:10 AM CDT	Special Weather Statement	OUN	Canadian	50 min
Apr 10, 12:15 AM CDT	Special Weather Statement	OUN	Caddo, Kiowa	45 min
Apr 10, 12:38 AM CDT	Special Weather Statement	OUN	Caddo, Comanche	67 min
Apr 10, 6:26 AM CDT	Special Weather Statement	OUN	Blaine, Caddo, Canadian, Kingfisher	49 min
Apr 10, 3:55 PM CDT	Freeze Warning	OUN	Carter, Cleveland, Coal, Comanche, Cotton, Garvin and 18 more	17 hr
Apr 9, 7:47 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	58 min
Apr 9, 9:00 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	30 min
Apr 9, 9:05 PM CDT	Special Weather Statement	OUN	Wichita	25 min
Apr 9, 9:15 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Wichita	45 min
Apr 9, 9:25 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	50 min
Apr 9, 11:35 PM CDT	Special Weather Statement	OUN	Knox	25 min
Apr 9, 11:52 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Hardeman, Knox, Wilbarger	38 min
Apr 10, 12:22 AM CDT	Special Weather Statement	OUN	Knox	23 min
Apr 10, 12:26 AM CDT	Special Weather Statement	OUN	Wilbarger	34 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013 Every severe thunderstorm warning in 2013

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.