Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 29, NWS Norman, OK

March 29, 2013Tillman County, Oklahoma; Wichita County, Wilbarger County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Mar 29, 2013, 5:55 PM CDT for Tillman County, Oklahoma; Wichita County, Wilbarger County, Texas. It was in force for 50 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: Mar 29, 2013, 5:55 PM CDT (22:55 UTC)
Expired: Mar 29, 2013, 6:45 PM CDT
In force: 50 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Tillman County, OK, Wichita County, TX, Wilbarger County, TX

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 29, 3:56 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.9 hours before the alert went out and 278 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: 2907 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Mar 29, 2:59 PM CDT, 2 hours 56 minutes earlier.

Area forecast discussion, Mar 29, 2:59 PM CDT, 2 hours 56 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, Mar 29, 5:16 PM CDT, 39 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
516 PM CDT FRI MAR 29 2013

OKZ004>048-050>052-TXZ083>090-301000-
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-
516 PM CDT FRI MAR 29 2013

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

.DAY ONE...THIS EVENING AND OVERNIGHT...

THUNDERSTORM OUTLOOK...
A SLIGHT RISK OF SEVERE THUNDERSTORMS WILL REMAIN IN EFFECT THROUGH
THE OVERNIGHT HOURS.

LOCATION...
THE SLIGHT RISK AREA IS SOUTH AND WEST OF A LINE FROM WOODWARD TO
GUTHRIE AND SEMINOLE...TO ADA AND DURANT OKLAHOMA...INCLUDING ALL
OF WESTERN NORTH TEXAS.

TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE FROM 5 PM THIS
EVENING THROUGH 2 AM.

IMPACTS...
HAIL UP TO THE SIZE OF TENNIS BALLS AND WIND GUSTS TO 70 MPH WILL BE
POSSIBLE WITH THE STRONGEST STORMS.

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

DISCUSSION...
MOST SHOWERS AND STORMS THAT MOVED ACROSS CENTRAL OKLAHOMA LATE THIS
MORNING HAVE WEAKENED...AND EXITED THE REGION TO THE EAST.

THIS EVENING...MODERATE INSTABILITY...COMBINED WITH RELATIVELY WEAK
VERTICAL WIND SHEAR...WILL BE SUFFICIENT FOR SOME SEVERE STORMS FROM
NOW THROUGH THE OVERNIGHT HOURS. A MODEST CAP HAS KEPT MOST STORM ACTIVITY
FROM DEVELOPING THIS AFTERNOON...BUT THIS CAP IS EXPECTED TO WEAKEN AS AN
UPPER DISTURBANCE MOVES INTO THE TEXAS PANHANDLE AND WESTERN OKLAHOMA.
THIS WILL ALLOW FOR SCATTERED STORMS...A FEW OF WHICH MAY BE SEVERE...PRODUCING
LARGE HAIL AND DAMAGING WINDS.

STORMS ARE LIKELY TO CONTINUE INTO THE NIGHT...BUT A STRENGTHENING
SURFACE INVERSION WILL LIKELY CAUSE THE STORMS TO BECOME ELEVATED.
A FEW OF THESE STORMS MAY STILL BECOME STRONG TO SEVERE BUT THE
OVERALL INTENSITY OF THE STORMS WILL WEAKEN LATER THIS EVENING. HAIL
UP TO THE SIZE OF QUARTERS AND GUSTY WINDS WILL BE POSSIBLE WITH ANY
STRONG TO SEVERE STORMS AFTER MIDNIGHT.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SATURDAY MAR 30.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...80 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...

THUNDERSTORM OUTLOOK...
THERE WILL BE A CHANCE OF THUNDERSTORMS EACH DAY THROUGH MONDAY.
THERE IS A SLIGHT RISK OF SEVERE STORMS OVER MOST OF OKLAHOMA AND
NORTH TEXAS ON SATURDAY.

OTHER HAZARDOUS WEATHER...
SOME LIGHT SNOW IS POSSIBLE MONDAY NIGHT ACROSS NORTHERN OKLAHOMA...
AND FREEZING TEMPERATURES ARE EXPECTED TUESDAY AND WEDNESDAY MORNINGS
ACROSS MUCH OF CENTRAL AND NORTHERN OKLAHOMA.

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

CMS/MAXWELL/AUSTIN

In the hours before

Special weather statement, Mar 29, 1:02 PM CDT, 4 hours 53 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, Mar 29, 1:10 PM CDT, 4 hours 45 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, Mar 29, 1:18 PM CDT, 4 hours 37 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, Mar 29, 2:13 PM CDT, 3 hours 42 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, Mar 29, 2:39 PM CDT, 3 hours 16 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, Mar 29, 5:38 PM CDT, 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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 29, 8:51 AM CDT	Special Weather Statement	OUN	Caddo	24 min
Mar 29, 9:45 AM CDT	Special Weather Statement	OUN	Oklahoma	30 min
Mar 29, 9:48 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	42 min
Mar 29, 9:58 AM CDT	Special Weather Statement	OUN	Grady, McClain	47 min
Mar 29, 10:25 AM CDT	Special Weather Statement	OUN	Cleveland	20 min
Mar 29, 10:52 AM CDT	Special Weather Statement	OUN	Pottawatomie	38 min
Mar 29, 11:01 AM CDT	Special Weather Statement	OUN	McClain	44 min
Mar 29, 11:39 AM CDT	Special Weather Statement	OUN	Murray	36 min
Mar 29, 11:50 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Johnston, Murray, Pontotoc	25 min
Mar 29, 12:03 PM CDT	Special Weather Statement	OUN	Garvin	27 min
Mar 29, 12:10 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Johnston, Pontotoc	35 min
Mar 29, 12:23 PM CDT	Special Weather Statement	OUN	Garvin	37 min
Mar 29, 12:25 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	50 min
Mar 29, 12:35 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Johnston	40 min
Mar 29, 12:46 PM CDT	Special Weather Statement	OUN	Pontotoc	29 min
Mar 29, 12:54 PM CDT	Special Weather Statement	OUN	Pontotoc	36 min
Mar 29, 1:02 PM CDT	Special Weather Statement	OUN	Atoka	28 min
Mar 29, 1:10 PM CDT	Special Weather Statement	OUN	Coal	35 min
Mar 29, 1:18 PM CDT	Special Weather Statement	OUN	Pontotoc	27 min
Mar 29, 1:30 PM CDT	Severe Thunderstorm Warning	OUN	Coal	30 min
Mar 29, 1:41 PM CDT	Severe Thunderstorm Warning	OUN	Pontotoc	34 min
Mar 29, 1:57 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal	33 min
Mar 29, 2:13 PM CDT	Special Weather Statement	OUN	Coal	17 min
Mar 29, 2:39 PM CDT	Special Weather Statement	OUN	Atoka	36 min
Mar 29, 5:38 PM CDT	Special Weather Statement	OUN	Canadian	22 min
Mar 29, 5:55 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	50 min
Mar 29, 6:40 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	50 min
Mar 29, 6:42 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa, Tillman	48 min
Mar 29, 6:46 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Oklahoma	44 min
Mar 29, 6:47 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan	43 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013 Severe Thunderstorm Warnings in Oklahoma, 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; the sounding from the Mesonet's radiosonde archive.