Alert archive / Virginia / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 138, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jul 21, 2022, 2:32 AM EDT for 5 counties in Virginia. It was in force for 43 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
- Jul 21, 2022, 2:32 AM EDT (06:32 UTC)
- Expired
- Jul 21, 2022, 3:15 AM EDT
- In force
- 43 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties City of Norton, VA, Russell County, VA, Scott County, VA, Washington County, VA, Wise County, VA
The radar
The Jackson,KY radar (KJKL), 116 km from the middle of the area, began a volume at 06:33 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
Cncnati-Daytn, OH (KILN), launched 00:00Z, 6.5 hours before the alert went out and 312 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
- 3235 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1104 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 305 m²/s²
- Significant tornado parameter
- 2.5
- Supercell composite
- 17.5
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 Morristown, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 1:50 AM EDT, 42 minutes earlier.
Area forecast discussion, Jul 21, 1:50 AM EDT, 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>Hazardous weather outlook, Jul 20, 9:46 PM EDT, 4 hours 46 minutes before
Hazardous Weather Outlook National Weather Service Morristown TN 946 PM EDT Wed Jul 20 2022 NCZ060-061-TNZ012>018-035>047-067>074-081>087-098>102-VAZ001-002- 005-006-008-220200- Cherokee-Clay-Scott TN-Campbell-Claiborne-Hancock-Hawkins- Sullivan-Johnson-Morgan-Anderson-Union-Grainger-Hamblen- Northwest Cocke-Cocke Smoky Mountains-Northwest Greene- Southeast Greene-Washington TN-Unicoi-Northwest Carter- Southeast Carter-Roane-Loudon-Knox-Jefferson-Northwest Blount- Blount Smoky Mountains-North Sevier-Sevier Smoky Mountains- Sequatchie-Bledsoe-Rhea-Meigs-McMinn-Northwest Monroe- Southeast Monroe-Marion-Hamilton-Bradley-West Polk-East Polk-Lee- Wise-Scott VA-Russell-Washington VA- 946 PM EDT Wed Jul 20 2022 /846 PM CDT Wed Jul 20 2022/ This Hazardous Weather Outlook is for portions of southwest North Carolina...east Tennessee and southwest Virginia. .DAY ONE...Tonight Scattered showers and thunderstorms will continue tonight and into the early morning hours. A few of these storms may be strong to severe, with the primary threats being damaging wind gusts and very heavy rainfall that could cause localized flooding. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Showers and thunderstorms will be possible Thursday along an incoming frontal boundary. A few of these storms could be strong to severe with gusty winds, and heavy rainfall being the main threats, with the highest risk being in southeast Tennessee and southwest North Carolina. Over the weekend and into next week, temperatures in the central and southern Tennessee valley will climb into the mid and upper 90s, with heat index values exceeding 100. .SPOTTER INFORMATION STATEMENT... Spotter activation is not needed at this time.
In the hours before
Local storm report, Jul 20, 11:07 PM EDT, 3 hours 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1107 PM EDT WED JUL 20 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 PM FLASH FLOOD 3 W POWELL 36.02N 84.09W
07/20/2022 ANDERSON TN PUBLIC
SOCIAL MEDIA PHOTO OF WATER FLOWING OVER
ROADWAY BETWEEN CLAXTON AND POWELL.
&&Local storm report, Jul 21, 12:21 AM EDT, 2 hours 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1221 AM EDT THU JUL 21 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1217 AM FLASH FLOOD 1 N KNOXVILLE 35.99N 83.95W
07/21/2022 KNOX TN LAW ENFORCEMENT
KNOXVILLE PD REPORTING ROADS NEAR I275 AND
HEISKELL AVENUE AS UNDER WATER.
&&
19Local storm report, Jul 21, 12:49 AM EDT, 1 hour 43 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, Jul 21, 12:53 AM EDT, 1 hour 39 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, Jul 21, 1:22 AM EDT, 1 hour 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>Local storm report, Jul 21, 1:29 AM EDT, 1 hour 3 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 Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 8:10 PM EDT | Special Weather Statement | MRX | Bradley | 50 min |
| Jul 20, 8:14 PM EDT | Special Weather Statement | MRX | Hamilton | 31 min |
| Jul 20, 9:18 PM EDT | Special Weather Statement | MRX | Knox | 27 min |
| Jul 20, 10:24 PM EDT | Flash Flood Warning | MRX | Anderson, Knox | 5 hr |
| Jul 21, 12:05 AM EDT | Flash Flood Warning | MRX | Anderson, Knox | 3 hr |
| Jul 21, 1:31 AM EDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne, Hancock, Hawkins | 44 min |
| Jul 21, 1:44 AM EDT | Severe Thunderstorm Warning | MRX | Grainger, Hamblen, Jefferson | 30 min |
| Jul 21, 2:15 AM EDT | Areal Flood Advisory | MRX | Blount, Cocke, Sevier | 9 hr |
| Jul 21, 2:33 AM EDT | Areal Flood Advisory | MRX | Campbell, Claiborne, Union | 5 hr |
| Jul 21, 2:47 AM EDT | Flash Flood Warning | MRX | Anderson, Knox | 6 hr |
| Jul 21, 3:00 AM EDT | Areal Flood Advisory | MRX | Campbell, Scott | 5 hr |
| Jul 21, 3:03 AM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Grainger, Hamblen, Jefferson, Union | 42 min |
| Jul 21, 3:34 AM EDT | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Scott | 29 min |
| Jul 21, 4:11 AM EDT | Areal Flood Advisory | MRX | Cocke, Grainger, Greene, Hamblen, Jefferson | 3 hr |
| Jul 21, 4:12 AM EDT | Special Weather Statement | MRX | Anderson, Blount, Cocke, Jefferson, Knox, Loudon and 3 more | 48 min |
| Jul 21, 4:58 AM EDT | Areal Flood Advisory | MRX | Cocke, Jefferson, Sevier | 6 hr |
| Jul 21, 4:58 AM EDT | Special Weather Statement | MRX | Bledsoe, Blount, Knox, Loudon, McMinn, Meigs and 4 more | 62 min |
| Jul 21, 5:40 AM EDT | Special Weather Statement | MRX | Bledsoe, McMinn, Meigs, Monroe, Polk, Sequatchie | 65 min |
| Jul 21, 6:33 AM EDT | Special Weather Statement | MRX | Bradley, Hamilton, Marion, Polk, Sequatchie | 57 min |
| Jul 21, 6:48 AM EDT | Special Weather Statement | MRX | Bledsoe, Meigs, Rhea, Sequatchie | 42 min |
| Jul 21, 6:51 AM EDT | Areal Flood Advisory | MRX | McMinn, Meigs, Rhea | 3 hr |
| Jul 21, 7:27 AM EDT | Special Weather Statement | MRX | Bradley, Hamilton, Sequatchie | 48 min |
| Jul 21, 8:37 AM EDT | Areal Flood Warning | MRX | Anderson, Knox | 6 hr |
| Jul 21, 3:08 AM EDT | Areal Flood Advisory | MRX | Wise, City of Norton | 3 hr |
| Jul 20, 11:54 PM EDT | Flash Flood Warning | MRX | Cherokee, Clay | 5 hr |
| Jul 21, 4:28 AM EDT | Areal Flood Warning | MRX | Cherokee, Clay | 11 hr |
Nearby
Severe Thunderstorm Warnings in Virginia, 2022Every severe thunderstorm warning in 2022
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.