Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 547, NWS Norman, OK

June 17, 201312 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 17, 2013, 2:16 AM CDT for 12 counties in Oklahoma. It was in force for 59 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 17, 2013, 2:16 AM CDT (07:16 UTC)
Expired: Jun 17, 2013, 3:15 AM CDT
In force: 59 min
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Caddo County, OK, Canadian County, OK, Cleveland County, OK, Grady County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Pottawatomie County, OK

The radar

The Norman radar (KTLX), 32 km from the middle of the area, began a volume at 07:19 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 17, 1:02 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 7.3 hours before the alert went out and 39 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, 8 hours 9 minutes earlier.

Area forecast discussion, Jun 16, 6:07 PM CDT, 8 hours 9 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 17, 1:25 AM CDT, 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
125 AM CDT MON JUN 17 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-
125 PM CDT MON JUN 17 2013

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

.DAY ONE...OVERNIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A RISK OF SEVERE THUNDERSTORMS OVERNIGHT MAINLY ALONG
AND SOUTHEAST OF PONCA CITY...ENID...WATONGA AND ELK CITY.

TIMING...
THE MOST LIKELY TIME FOR SEVERE WEATHER WILL BE THROUGH 6 AM MONDAY.

IMPACTS...
THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING...
WIND GUSTS TO 65 MPH
HAIL UP TO THE SIZE OF QUARTERS
VERY HEAVY RAINFALL

RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD PLAN
FOR SEVERE WEATHER OPERATIONS.

DISCUSSION...
A LINE OF SEVERE THUNDERSTORMS WILL PUSH QUICKLY ACROSS MUCH OF NORTHERN...
CENTRAL AND SOUTHERN OKLAHOMA OVERNIGHT.  FREQUENT WIND GUSTS TO 50 MPH CAN
BE EXPECTED AS LINE MOVES SOUTHEAST WITH EMBEDDED GUSTS TO 65 MPH.
SOME HAIL TO THE SIZE OF QUARTERS MAY ALSO OCCUR.  THE FAST MOVEMENT OF THE
STORMS MAY LIMIT THE POTENTIAL OF FLOODING...BUT SOME CREEKS AND STREAMS
IN NORTHERN AND CENTRAL OKLAHOMA MAY SEE SIGNIFICANT RISES.

BY EARLY MONDAY MORNING...THE LINE OF STORMS WILL BE ACROSS SOUTH CENTRAL
AND SOUTHEAST OKLAHOMA.

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 MAY RESULT IN SOME FLOODING OF CREEKS AND STREAMS
ACROSS PORTIONS OF NORTHERN AND CENTRAL OKLAHOMA.

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

THUNDERSTORM OUTLOOK...
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.

In the hours before

Special weather statement, Jun 16, 10:18 PM CDT, 3 hours 58 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, 10:47 PM CDT, 3 hours 29 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 17, 12:25 AM CDT, 1 hour 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>

Local storm report, Jun 17, 12:40 AM CDT, 1 hour 36 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 17, 1:09 AM CDT, 1 hour 7 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 17, 1:53 AM CDT, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
153 AM CDT MON JUN 17 2013

OKZ021>023-033>036-TXZ083-170715-
HARMON OK-GREER OK-KIOWA OK-WASHITA OK-CADDO OK-JACKSON OK-
BECKHAM OK-HARDEMAN TX-
153 AM CDT MON JUN 17 2013

...SIGNIFICANT WEATHER ADVISORY FOR HARMON...GREER...KIOWA...
WASHITA...SOUTHWESTERN CADDO...NORTHERN JACKSON...BECKHAM AND
NORTHWESTERN HARDEMAN COUNTIES UNTIL 215 AM CDT...

AT 148 AM CDT...THE LEADING EDGE OF STRONG AND GUSTY THUNDERSTORM
WINDS EXTENDED ALONG A LINE EXTENDING FROM 3 MILES WEST OF CLOUD
CHIEF TO 10 MILES WEST OF VINSON...MOVING SOUTHEAST AT 35 MPH. THE
STRONG WIND GUSTS WILL LIKELY OCCUR 20 TO 30 MINUTES BEFORE HEAVY
RAIN AND SMALL HAIL.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...

LOCATIONS IMPACTED INCLUDE...
HOBART...SAYRE...MANGUM...CORDELL...HOLLIS...GRANITE...BURNS FLAT...
ERICK...MOUNTAIN VIEW...ROOSEVELT...GOTEBO...CARTER...GOULD AND
MARTHA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

&&

LAT...LON 3525 9999 3546 9911 3546 9901 3495 9849
      3447 10000
TIME...MOT...LOC 0648Z 322DEG 31KT 3526 9891 3493 10004

11

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:04 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	56 min
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, 2:32 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.