Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 533, NWS Norman, OK

June 16, 2013Caddo County, Grady County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 16, 2013, 7:04 PM CDT for Caddo County, Grady County, Oklahoma. It was in force for 56 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: Jun 16, 2013, 7:04 PM CDT (00:04 UTC)
Expired: Jun 16, 2013, 8:00 PM CDT
In force: 56 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Caddo County, OK, Grady County, OK

The radar

The Norman radar (KTLX), 82 km from the middle of the area, began a volume at 00:06 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
Jun 16, 3:25 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.1 hours before the alert went out and 68 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: 2304 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1497 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 104 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.1

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 Jun 16, 6:07 PM CDT, 57 minutes earlier.

Area forecast discussion, Jun 16, 6:07 PM CDT, 57 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, Jun 16, 12:28 PM CDT, 6 hours 36 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE NORMAN OK
1228 PM CDT SUN JUN 16 2013

OKZ004>048-050>052-TXZ083>090-171730-
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-
1228 PM CDT SUN JUN 16 2013

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

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
THROUGH TONIGHT...MAINLY NORTH AND WEST OF A LINE FROM WICHITA
FALLS TEXAS TO SEMINOLE OKLAHOMA.

TIMING...
THE MOST LIKELY TIME FOR SEVERE WEATHER WILL BE FROM 4 PM THROUGH
6 AM.

IMPACTS...
THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS IN
EXCESS OF 70 MPH...AND HAIL UP TO THE SIZE OF HALF DOLLARS.

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

DISCUSSION...
THUNDERSTORM CHANCES WILL INCREASE THROUGH THE AFTERNOON AND
EARLY EVENING HOURS MAINLY ACROSS CENTRAL AND WESTERN OKLAHOMA AS
A MID LEVEL DISTURBANCE CONTINUES TO SHIFT SLOWLY EASTWARD THROUGH
THE DAY. SOME OF THESE STORMS COULD BECOME SEVERE WITH A THREAT OF
DAMAGING WINDS OVER 70 MPH AND HAIL UP TO THE SIZE OF HALF
DOLLARS.

LATER THIS EVENING MAINLY AFTER 7 PM...THUNDERSTORMS ACROSS
WESTERN OKLAHOMA AND THE TEXAS PANHANDLE MAY MERGE AND DEVELOP
INTO A COMPLEX. THIS COMPLEX MAY THEN MOVE SOUTHEASTWARD THROUGH
THE EARLY EVENING HOURS INTO SOUTHWEST OKLAHOMA AND WESTERN NORTH
TEXAS. ANOTHER COMPLEX MAY THEN DEVELOP LATE TONIGHT AROUND
MIDNIGHT ACROSS PORTIONS OF WESTERN AND SOUTHWESTERN KANSAS...AND
MOVE INTO NORTHERN AND CENTRAL PORTIONS OF OKLAHOMA DURING THE
OVERNIGHT AND EARLY MORNING HOURS. DAMAGING WINDS...SMALL
HAIL...AND HEAVY RAIN WILL BE THE PRIMARY CONCERNS WITH THESE
COMPLEXES.

PROBABILITY TABLE...
VALID THROUGH 700 AM CDT MONDAY JUN 17.
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...
HEAVY RAINFALL OVERNIGHT MAY RESULT IN FLASH FLOODING AND FLOODING
OF CREEKS AND STREAMS ACROSS PORTIONS OF NORTHERN AND CENTRAL
OKLAHOMA. REMEMBER...TURN AROUND...DONT DROWN.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS MAY BE ONGOING MONDAY MORNING AS THE COMPLEX FROM
SUNDAY NIGHT TRACKS SOUTH AND SOUTHEASTWARD ACROSS THE EASTERN
HALF OF OKLAHOMA.

FOR THE REMAINDER THE WEEK...A FAIRLY ACTIVE WEATHER PATTERN
WILL CONTINUE TO SUPPORT CHANCES FOR SHOWERS AND THUNDERSTORMS FROM
MONDAY AFTERNOON AND EVENING THROUGH EARLY THURSDAY MORNING. A FEW
STRONG TO SEVERE STORMS WITH DAMAGING WIND GUSTS ARE POSSIBLE
THROUGH EARLY THURSDAY.

OTHER HAZARDOUS WEATHER...
PERIODS OF HEAVY RAINFALL MAY CAUSE LOCALIZED FLOODING A VARIOUS
TIMES THROUGH EARLY THURSDAY...ESPECIALLY IN LOW-LYING AND
URBANIZED AREAS.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY 5
AM MONDAY MORNING...OR AS UPDATES ARE NEEDED.

BARNES/KURTZ

In the hours before

Special weather statement, Jun 16, 5:33 PM CDT, 1 hour 31 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, Jun 16, 6:13 PM CDT, 51 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, Jun 16, 6:18 PM CDT, 46 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, Jun 16, 6:42 PM CDT, 22 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, Jun 16, 6:48 PM CDT, 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, Jun 16, 6:49 PM CDT, 15 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
Jun 16, 7:10 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	50 min
Jun 16, 8:11 PM CDT	Special Weather Statement	OUN	Grady	34 min
Jun 16, 8:28 PM CDT	Special Weather Statement	OUN	Comanche	32 min
Jun 16, 8:33 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	42 min
Jun 16, 8:56 PM CDT	Special Weather Statement	OUN	Tillman	34 min
Jun 16, 9:02 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	43 min
Jun 16, 9:14 PM CDT	Severe Thunderstorm Warning	OUN	Comanche	31 min
Jun 16, 9:46 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton	44 min
Jun 16, 10:18 PM CDT	Special Weather Statement	OUN	Harper	27 min
Jun 16, 10:27 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	48 min
Jun 16, 10:32 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	43 min
Jun 16, 11:12 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Ellis, Grant, Harper, Major, Woods and 1 more	48 min
Jun 17, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Dewey, Ellis, Garfield, Grant, Harper and 4 more	59 min
Jun 17, 12:33 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Noble	57 min
Jun 17, 12:45 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey, Garfield, Kingfisher, Major and 1 more	45 min
Jun 17, 1:27 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Kingfisher, Lincoln, Logan and 3 more	63 min
Jun 17, 1:32 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Custer, Kingfisher, Washita	43 min
Jun 17, 1:53 AM CDT	Special Weather Statement	OUN	Beckham, Greer, Harmon, Kiowa, Washita	22 min
Jun 17, 2:16 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Cleveland, Grady, Kingfisher, Lincoln and 6 more	59 min
Jun 17, 2:32 AM CDT	Special Weather Statement	OUN	Kiowa	28 min
Jun 17, 2:52 AM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	53 min
Jun 17, 2:55 AM CDT	Special Weather Statement	OUN	Comanche, Jackson, Tillman	35 min
Jun 17, 3:16 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Cleveland, Comanche, Cotton, Garvin, Grady and 7 more	44 min
Jun 17, 3:21 AM CDT	Special Weather Statement	OUN	Cotton, Jackson, Tillman	24 min
Jun 17, 3:37 AM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	53 min
Jun 17, 4:02 AM CDT	Special Weather Statement	OUN	Garvin, Jefferson, McClain, Murray, Pontotoc, Pottawatomie and 2 more	28 min
Jun 17, 4:19 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Kiowa, Tillman	41 min
Jun 17, 4:31 AM CDT	Special Weather Statement	OUN	Carter, Hughes, Murray, Pontotoc, Stephens	29 min
Jun 17, 4:54 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens, Tillman	66 min
Jun 17, 4:57 AM CDT	Special Weather Statement	OUN	Carter, Coal, Johnston, Love, Marshall, Murray	33 min
Jun 17, 5:34 AM CDT	Special Weather Statement	OUN	Atoka, Bryan, Coal, Johnston, Love, Marshall	26 min
Jun 17, 5:55 AM CDT	Special Weather Statement	OUN	Atoka, Bryan, Johnston, Love, Marshall	35 min
Jun 17, 6:16 AM CDT	Severe Thunderstorm Warning	OUN	Love, Marshall	44 min
Jun 17, 6:24 AM CDT	Special Weather Statement	OUN	Bryan	36 min
Jun 17, 7:09 AM CDT	Special Weather Statement	OUN	Bryan	36 min
Jun 16, 10:47 PM CDT	Special Weather Statement	OUN	Foard	28 min
Jun 17, 12:25 AM CDT	Special Weather Statement	OUN	Wilbarger	50 min
Jun 17, 4:36 AM CDT	Special Weather Statement	OUN	Archer, Baylor, Knox	24 min
Jun 17, 12:59 PM CDT	Special Weather Statement	OUN	Clay	31 min
Jun 17, 1:28 PM CDT	Special Weather Statement	OUN	Clay	47 min

Nearby

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; radar from the NEXRAD Level II archive.