Alert archive / Oklahoma / Flood Watches in 2016

Flood Watch 7, NWS Norman, OK

August 25, 201611 counties in Oklahoma

NWS Norman, OK issued this flood watch at Aug 25, 2016, 9:45 AM CDT for 11 counties in Oklahoma. It took effect at Aug 25, 2016, 4:00 PM CDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Aug 25, 2016, 9:45 AM CDT (14:45 UTC)
In effect from: Aug 25, 2016, 4:00 PM CDT
Expired: Aug 26, 2016, 7:00 AM CDT
In force: 15 hr
Issued by: NWS Norman, OK
Flood severity: None

Counties Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Grant County, OK, Kay County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK

The radar

The Vance AFB radar (KVNX), 85 km from the middle of the area, began a volume at 14:47 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 nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 2.8 hours before the alert went out and 143 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: 649 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 1204 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch 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 flood watch went out at Aug 25, 6:35 AM CDT, 3 hours 10 minutes earlier.

Area forecast discussion, Aug 25, 6:35 AM CDT, 3 hours 10 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, Aug 25, 5:03 AM CDT, 4 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>

In the hours before

Local storm report, Aug 25, 6:17 AM CDT, 3 hours 28 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
Aug 24, 7:10 PM CDT	Severe Thunderstorm Warning	OUN	Kay	20 min
Aug 24, 7:21 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	39 min
Aug 24, 7:42 PM CDT	Special Weather Statement	OUN	Kay	33 min
Aug 24, 7:42 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	48 min
Aug 24, 7:56 PM CDT	Special Weather Statement	OUN	Garfield	34 min
Aug 24, 8:17 PM CDT	Special Weather Statement	OUN	Kay	28 min
Aug 24, 8:28 PM CDT	Special Weather Statement	OUN	Jackson	47 min
Aug 24, 8:49 PM CDT	Special Weather Statement	OUN	Greer	26 min
Aug 24, 9:04 PM CDT	Special Weather Statement	OUN	Kiowa	26 min
Aug 24, 9:36 PM CDT	Special Weather Statement	OUN	Kay	39 min
Aug 24, 10:15 PM CDT	Areal Flood Advisory	OUN	Kay	2 hr
Aug 24, 10:31 PM CDT	Special Weather Statement	OUN	Kay	29 min
Aug 25, 2:56 PM CDT	Special Weather Statement	OUN	Oklahoma	34 min
Aug 25, 3:19 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain, Oklahoma	24 min
Aug 25, 3:21 PM CDT	Areal Flood Advisory	OUN	Cleveland, Oklahoma	114 min
Aug 25, 3:33 PM CDT	Special Weather Statement	OUN	Payne	27 min
Aug 25, 3:38 PM CDT	Special Weather Statement	OUN	Roger Mills	22 min
Aug 25, 3:39 PM CDT	Severe Thunderstorm Warning	OUN	Payne	36 min
Aug 25, 3:41 PM CDT	Special Weather Statement	OUN	Oklahoma	34 min
Aug 25, 3:44 PM CDT	Special Weather Statement	OUN	Oklahoma	31 min
Aug 25, 3:45 PM CDT	Special Weather Statement	OUN	Oklahoma	30 min
Aug 25, 3:47 PM CDT	Special Weather Statement	OUN	Beckham	28 min
Aug 25, 4:03 PM CDT	Special Weather Statement	OUN	Roger Mills	27 min
Aug 25, 4:07 PM CDT	Severe Thunderstorm Warning	OUN	Payne	22 min
Aug 25, 4:13 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Roger Mills	47 min
Aug 25, 4:26 PM CDT	Tornado Warning	OUN	Beckham, Custer, Roger Mills	34 min
Aug 25, 4:40 PM CDT	Special Weather Statement	OUN	Harmon	65 min
Aug 25, 4:50 PM CDT	Areal Flood Advisory	OUN	Custer, Dewey, Roger Mills	3 hr
Aug 25, 4:53 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon	67 min
Aug 25, 4:54 PM CDT	Special Weather Statement	OUN	Custer	36 min
Aug 25, 4:55 PM CDT	Tornado Warning	OUN	Custer, Dewey	35 min
Aug 25, 4:57 PM CDT	Tornado Warning	OUN	Custer	33 min
Aug 25, 5:03 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	42 min
Aug 25, 5:04 PM CDT	Special Weather Statement	OUN	Blaine	26 min
Aug 25, 5:14 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey	46 min
Aug 25, 5:15 PM CDT	Special Weather Statement	OUN	Logan	30 min
Aug 25, 5:21 PM CDT	Special Weather Statement	OUN	Beckham	24 min
Aug 25, 5:28 PM CDT	Severe Thunderstorm Warning	OUN	Custer	32 min
Aug 25, 5:30 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	27 min
Aug 25, 5:37 PM CDT	Severe Thunderstorm Warning	OUN	Custer	53 min
Aug 25, 5:40 PM CDT	Special Weather Statement	OUN	Blaine	20 min
Aug 25, 5:44 PM CDT	Special Weather Statement	OUN	Logan	16 min
Aug 25, 5:50 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Dewey, Major	40 min
Aug 25, 5:57 PM CDT	Severe Thunderstorm Warning	OUN	Dewey	33 min
Aug 25, 5:59 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Noble, Payne	46 min
Aug 25, 6:05 PM CDT	Special Weather Statement	OUN	Beckham	25 min
Aug 25, 6:26 PM CDT	Severe Thunderstorm Warning	OUN	Blaine	49 min
Aug 25, 6:31 PM CDT	Severe Thunderstorm Warning	OUN	Payne	44 min
Aug 25, 6:34 PM CDT	Special Weather Statement	OUN	Washita	26 min
Aug 25, 6:40 PM CDT	Severe Thunderstorm Warning	OUN	Noble	35 min
Aug 25, 6:45 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	45 min
Aug 25, 6:55 PM CDT	Special Weather Statement	OUN	Major	35 min
Aug 24, 7:13 PM CDT	Special Weather Statement	OUN	Foard, Hardeman	32 min
Aug 24, 7:49 PM CDT	Special Weather Statement	OUN	Hardeman	26 min

Nearby

Flood Watches in Oklahoma, 2016 Every flood watch in 2016

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.