Alert archive / Virginia / Areal Flood Advisories in 2021

Areal Flood Advisory 49, NWS Morristown, TN

June 11, 2021Washington County, Virginia

NWS Morristown, TN issued this areal flood advisory at Jun 11, 2021, 1:23 PM EDT for Washington County, Virginia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jun 11, 2021, 1:23 PM EDT (17:23 UTC)
Expired: Jun 11, 2021, 4:30 PM EDT
In force: 3 hr
Issued by: NWS Morristown, TN
Area: Storm-based polygon

County Washington County, VA

The radar

The Knoxville radar (KMRX), 143 km from the middle of the area, began a volume at 17:22 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 5.4 hours before the alert went out and 198 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: 329 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 871 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 71 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 Morristown, TN wrote its last area forecast discussion before this areal flood advisory went out at Jun 11, 10:44 AM EDT, 2 hours 39 minutes earlier.

Area forecast discussion, Jun 11, 10:44 AM EDT, 2 hours 39 minutes before

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Hazardous weather outlook, Jun 11, 4:01 AM EDT, 9 hours 22 minutes before

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  <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.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 3:58 AM EDT	Flash Flood Watch	MRX	Anderson, Blount, Campbell, Carter, Claiborne, Cocke and 14 more	18 hr
Jun 11, 5:01 AM EDT	Areal Flood Advisory	MRX	Campbell	3 hr
Jun 11, 12:56 PM EDT	Areal Flood Advisory	MRX	Carter, Sullivan, Washington	4 hr
Jun 11, 1:55 PM EDT	Areal Flood Advisory	MRX	Anderson, Morgan, Roane	3 hr
Jun 11, 3:22 PM EDT	Areal Flood Advisory	MRX	Greene, Washington	3 hr
Jun 11, 4:31 PM EDT	Areal Flood Advisory	MRX	Anderson, Loudon, Morgan, Roane	3 hr
Jun 11, 7:06 PM EDT	Special Weather Statement	MRX	Loudon	39 min
Jun 11, 1:49 PM EDT	Areal Flood Advisory	MRX	Lee	3 hr
Jun 11, 2:50 PM EDT	Areal Flood Advisory	MRX	Russell, Washington	3 hr

Nearby

Areal Flood Advisories in Virginia, 2021 Every areal flood advisory in 2021

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.