Alert archive / Oklahoma / Areal Flood Advisories in 2016

Areal Flood Advisory 21, NWS Norman, OK

April 17, 20165 counties in Oklahoma

NWS Norman, OK issued this areal flood advisory at Apr 17, 2016, 6:51 PM CDT for 5 counties in Oklahoma. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Apr 17, 2016, 6:51 PM CDT (23:51 UTC)
Expired: Apr 17, 2016, 10:45 PM CDT
In force: 4 hr
Issued by: NWS Norman, OK
Area: Storm-based polygon

Counties Carter County, OK, Jefferson County, OK, Love County, OK, Murray County, OK, Stephens County, OK

The radar

The Norman radar (KTLX), 121 km from the middle of the area, began a volume at 23:53 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

Fort Worth, TX (KFWD), launched 12:00Z, 11.9 hours before the alert went out and 159 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: 536 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 383 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 areal flood advisory 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 areal flood advisory went out at Apr 17, 6:40 PM CDT, 11 minutes earlier.

Area forecast discussion, Apr 17, 6:40 PM CDT, 11 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 17, 12:10 PM CDT, 6 hours 41 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 16, 8:40 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	50 min
Apr 16, 8:43 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	47 min
Apr 16, 9:00 PM CDT	Areal Flood Advisory	OUN	Comanche, Kiowa, Tillman	2 hr
Apr 16, 9:29 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa, Tillman	46 min
Apr 16, 9:31 PM CDT	Special Weather Statement	OUN	Harmon	44 min
Apr 16, 9:36 PM CDT	Tornado Warning	OUN	Tillman	24 min
Apr 16, 9:54 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	51 min
Apr 16, 10:05 PM CDT	Special Weather Statement	OUN	Cotton	25 min
Apr 16, 10:35 PM CDT	Areal Flood Advisory	OUN	Comanche, Greer, Harmon, Jackson, Kiowa, Tillman	3 hr
Apr 16, 10:38 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	52 min
Apr 16, 10:41 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	49 min
Apr 16, 10:56 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	49 min
Apr 16, 11:04 PM CDT	Flash Flood Warning	OUN	Greer, Jackson, Kiowa, Tillman	3 hr
Apr 16, 11:28 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa, Washita	47 min
Apr 16, 11:31 PM CDT	Flash Flood Warning	OUN	Caddo, Comanche, Jackson, Kiowa, Washita	2 hr
Apr 16, 11:39 PM CDT	Special Weather Statement	OUN	Tillman	66 min
Apr 17, 12:06 AM CDT	Special Weather Statement	OUN	Cotton	24 min
Apr 17, 12:16 AM CDT	Areal Flood Advisory	OUN	Harper, Woods, Woodward	3 hr
Apr 17, 12:37 AM CDT	Special Weather Statement	OUN	Caddo, Comanche	38 min
Apr 17, 1:51 AM CDT	Flash Flood Warning	OUN	Caddo, Comanche, Cotton, Greer, Jackson, Kiowa and 1 more	6 hr
Apr 17, 2:07 AM CDT	Areal Flood Advisory	OUN	Cotton	3 hr
Apr 17, 2:49 AM CDT	Special Weather Statement	OUN	Cotton	26 min
Apr 17, 2:52 AM CDT	Special Weather Statement	OUN	Cotton	23 min
Apr 17, 3:59 AM CDT	Areal Flood Advisory	OUN	Caddo, Carter, Comanche, Cotton, Grady, Jefferson and 2 more	3 hr
Apr 17, 4:13 AM CDT	Areal Flood Advisory	OUN	Caddo	3 hr
Apr 17, 4:33 AM CDT	Flash Flood Warning	OUN	Caddo	3 hr
Apr 17, 5:02 AM CDT	Areal Flood Advisory	OUN	Canadian, Cleveland, Grady, Kingfisher, Lincoln, Logan and 4 more	3 hr
Apr 17, 5:11 AM CDT	Areal Flood Advisory	OUN	Custer	3 hr
Apr 17, 7:43 AM CDT	Areal Flood Warning	OUN	Caddo, Comanche, Cotton, Jackson, Kiowa, Tillman	7 hr
Apr 17, 8:09 AM CDT	River Flood Warning	OUN	Kingfisher, Logan	44 hr
Apr 17, 8:32 AM CDT	River Flood Warning	OUN	Bryan	44 hr
Apr 17, 8:37 AM CDT	River Flood Warning	OUN	Atoka	48 hr
Apr 16, 7:07 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	23 min
Apr 16, 7:18 PM CDT	Special Weather Statement	OUN	Hardeman	27 min
Apr 16, 7:50 PM CDT	Special Weather Statement	OUN	Hardeman	25 min
Apr 16, 8:06 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	39 min
Apr 16, 8:26 PM CDT	Special Weather Statement	OUN	Wilbarger	19 min
Apr 16, 9:22 PM CDT	Special Weather Statement	OUN	Wichita	23 min
Apr 16, 9:33 PM CDT	Special Weather Statement	OUN	Wichita	27 min
Apr 16, 10:02 PM CDT	Special Weather Statement	OUN	Foard, Hardeman	43 min
Apr 16, 10:23 PM CDT	Special Weather Statement	OUN	Wichita	37 min
Apr 16, 11:01 PM CDT	Tornado Warning	OUN	Clay, Wichita	29 min
Apr 16, 11:21 PM CDT	Severe Thunderstorm Warning	OUN	Clay	39 min
Apr 16, 11:45 PM CDT	Special Weather Statement	OUN	Archer	30 min
Apr 17, 12:08 AM CDT	Special Weather Statement	OUN	Clay	37 min
Apr 17, 3:23 AM CDT	Special Weather Statement	OUN	Montague	22 min

Nearby

Areal Flood Advisories in Oklahoma, 2016 Every areal flood advisory 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.