Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 355, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jun 22, 2018, 10:42 PM CDT for 8 counties in Oklahoma. It was in force for 48 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 22, 2018, 10:42 PM CDT (03:42 UTC)
- Expired
- Jun 22, 2018, 11:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 70.0 mph
Counties Beckham County, OK, Caddo County, OK, Comanche County, OK, Custer County, OK, Greer County, OK, Kiowa County, OK, Roger Mills County, OK, Washita County, OK
The radar
The Altus AFB radar (KFDR), 93 km from the middle of the area, began a volume at 03:43 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 22, 6:22 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 9:27 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 3.7 hours before the alert went out and 154 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
- 495 J/kg
- Mixed-layer CIN
- -405 J/kg
- Mixed-layer LCL
- 1761 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 293 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 22, 6:54 PM CDT, 3 hours 48 minutes earlier.
Area forecast discussion, Jun 22, 6:54 PM CDT, 3 hours 48 minutes before
Area Forecast Discussion National Weather Service Norman OK 654 PM CDT Fri Jun 22 2018 .DISCUSSION... && .AVIATION... A complex of thunderstorms with damaging winds is expected to move across the northwestern half of Oklahoma this evening, arriving to the OKC area by late evening. Once the complex passes early Saturday morning, VFR conditions and north winds are expected. Later Saturday a surface front from the southern TX panhandle into central or southern OK will focus thunderstorm development from OKC and areas south and east through the late afternoon. && .PREV DISCUSSION... /issued 240 PM CDT Fri Jun 22 2018/ DISCUSSION... An active weather pattern will bring a risk of strong to severe storms through about Monday/early Tuesday of next week. Heavy rainfall and flooding will be possible as well. Scattered to numerous showers and thunderstorms will form over parts of the southern High Plains this afternoon, as a shortwave trough approaches. By early to mid evening, a thunderstorm complex will organize and move east and southeast through Oklahoma. The timing for storms to reach the main body of Oklahoma, appears to be after 6-7 pm. Strong damaging winds will be the main hazard with storms this evening and overnight with perhaps a better chance of hail across western Oklahoma early this evening. By mid to late Saturday afternoon, additional strong to severe storms are expected to form. At this time, areas along and southeast of Interstate 44 have the best opportunity. Although fewer storms may form Saturday, better instability and decent shear will support supercell storms with the potential for very large hail and damaging winds. The focus storms on Sunday will shift to mainly the northern half of Oklahoma. Another round of thunderstorms may develop across the eastern Texas and Oklahoma panhandles as an upper low/trough approaches. Storm movement should generally be east and northeast during the afternoon and evening. After the trough lifts east of the area on Tuesday, an upper level ridge over the southwestern United States is expected to build east during the mid to later part of next week. This will likely bring a period of dry weather along with rather hot and humid conditions. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 69 87 72 93 / 70 40 30 10 Hobart OK 72 92 74 99 / 40 20 20 10 Wichita Falls TX 77 100 76 100 / 20 20 40 0 Gage OK 64 87 69 96 / 80 10 10 30 Ponca City OK 68 86 71 90 / 80 20 10 10 Durant OK 76 93 76 94 / 50 30 40 10 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && 26/09/09
Hazardous weather outlook, Jun 22, 8:27 PM CDT, 2 hours 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>In the hours before
Local storm report, Jun 22, 10:02 PM CDT, 40 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 22, 10:06 PM CDT, 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 22, 10:07 PM CDT, 35 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 22, 10:19 PM CDT, 23 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 22, 10:25 PM CDT, 17 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 22, 10:31 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>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 7:26 PM CDT | Special Weather Statement | OUN | Harper | 19 min |
| Jun 22, 7:37 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper, Woods, Woodward | 38 min |
| Jun 22, 8:12 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Dewey, Ellis, Harper, Major, Roger Mills and 2 more | 48 min |
| Jun 22, 8:56 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Blaine, Dewey, Garfield, Grant, Major and 2 more | 49 min |
| Jun 22, 9:02 PM CDT | Special Weather Statement | OUN | Beckham, Custer, Dewey, Roger Mills | 28 min |
| Jun 22, 9:11 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Blaine, Custer, Dewey, Ellis, Major and 3 more | 49 min |
| Jun 22, 9:24 PM CDT | Special Weather Statement | OUN | Garfield | 21 min |
| Jun 22, 9:39 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Blaine, Dewey, Garfield, Grant, Kay and 5 more | 51 min |
| Jun 22, 9:53 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Blaine, Caddo, Canadian, Custer, Dewey and 5 more | 52 min |
| Jun 22, 10:23 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Canadian, Cleveland, Garfield, Grady and 8 more | 52 min |
| Jun 22, 10:44 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Roger Mills | 46 min |
| Jun 22, 11:06 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Cleveland, Garvin, Grady, Kingfisher and 7 more | 39 min |
| Jun 22, 11:08 PM CDT | Special Weather Statement | OUN | Payne | 37 min |
| Jun 22, 11:28 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Caddo, Comanche, Custer, Grady, Greer and 6 more | 47 min |
| Jun 22, 11:44 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Cleveland, Garvin, Grady, Hughes, McClain and 5 more | 46 min |
| Jun 22, 11:51 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Caddo, Carter, Comanche, Cotton, Custer and 8 more | 39 min |
| Jun 23, 12:12 AM CDT | Special Weather Statement | OUN | Jefferson | 33 min |
| Jun 23, 12:25 AM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Comanche, Custer, Grady, Kiowa and 1 more | 50 min |
| Jun 23, 12:28 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Bryan, Carter, Coal, Garvin, Hughes and 8 more | 62 min |
| Jun 23, 1:17 AM CDT | Special Weather Statement | OUN | Cleveland, Grady, McClain | 28 min |
| Jun 23, 1:22 AM CDT | Severe Thunderstorm Warning | OUN | Carter, Garvin, Grady, McClain, Stephens | 41 min |
| Jun 23, 1:28 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Bryan, Coal, Hughes, Johnston | 62 min |
| Jun 23, 4:11 AM CDT | Special Weather Statement | OUN | Canadian | 34 min |
| Jun 23, 7:28 AM CDT | Special Weather Statement | OUN | Stephens | 47 min |
| Jun 23, 8:01 AM CDT | Special Weather Statement | OUN | Murray | 59 min |
| Jun 23, 8:27 AM CDT | Areal Flood Advisory | OUN | Carter, Coal, Garvin, Johnston, Murray, Pontotoc | 3 hr |
| Jun 23, 8:45 AM CDT | Special Weather Statement | OUN | Atoka, Johnston | 45 min |
| Jun 23, 9:32 AM CDT | Flash Flood Warning | OUN | Murray | 106 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2018Every severe thunderstorm warning in 2018
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.