Alert archive / Oklahoma / Flood Watches in 2020
Flood Watch 2, NWS Norman, OK
NWS Norman, OK issued this flood watch at Mar 18, 2020, 10:05 AM CDT for 18 counties in Oklahoma. It took effect at Mar 18, 2020, 7:00 PM CDT. It was in force for 23 hr.
The area
The counties it named.
The facts
- Issued
- Mar 18, 2020, 10:05 AM CDT (15:05 UTC)
- In effect from
- Mar 18, 2020, 7:00 PM CDT
- Expired
- Mar 19, 2020, 6:11 PM CDT
- In force
- 23 hr
- Issued by
- NWS Norman, OK
- Flood severity
- None
Counties Atoka County, OK, Bryan County, OK, Carter County, OK, Cleveland County, OK, Coal County, OK, Garvin County, OK, Grady County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK
The radar
The Norman radar (KTLX), 87 km from the middle of the area, began a volume at 15:06 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 nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 3.1 hours before the alert went out and 79 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.
- Mixed-layer CAPE
- 5 J/kg
- Mixed-layer CIN
- -276 J/kg
- Mixed-layer LCL
- 631 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 285 m²/s²
- 0-3 km storm-relative helicity
- 301 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
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 Mar 18, 7:52 AM CDT, 2 hours 13 minutes earlier.
Area forecast discussion, Mar 18, 7:52 AM CDT, 2 hours 13 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 18, 4:34 AM CDT, 5 hours 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>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 1:10 AM CDT | Dense Fog Advisory | OUN | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 27 more | 9 hr |
| Mar 18, 7:20 AM CDT | River Flood Warning | OUN | Pottawatomie, Seminole | 103 min |
| Mar 18, 8:57 AM CDT | River Flood Warning | OUN | Bryan | 36 hr |
| Mar 18, 1:43 PM CDT | Wind Advisory | OUN | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 23 more | 41 hr |
| Mar 18, 5:50 PM CDT | Special Weather Statement | OUN | Grady | 25 min |
| Mar 18, 6:08 PM CDT | Special Weather Statement | OUN | Jackson | 37 min |
| Mar 18, 6:12 PM CDT | Special Weather Statement | OUN | Jackson | 33 min |
| Mar 18, 6:22 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Kiowa, Tillman | 38 min |
| Mar 18, 6:44 PM CDT | Severe Thunderstorm Warning | OUN | Jackson | 46 min |
| Mar 18, 6:45 PM CDT | Special Weather Statement | OUN | Comanche | 30 min |
| Mar 18, 6:57 PM CDT | Special Weather Statement | OUN | Kiowa | 33 min |
| Mar 17, 7:02 PM CDT | Areal Flood Advisory | OUN | Baylor | 3 hr |
| Mar 18, 5:59 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman | 46 min |
| Mar 18, 6:53 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman | 52 min |
Nearby
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.