Alert archive / Virginia / Flash Flood Watches in 2019

Flash Flood Watch 3, NWS Blacksburg, VA

June 7, 201912 counties in Virginia; 8 counties in North Carolina

NWS Blacksburg, VA issued this flash flood watch at Jun 7, 2019, 8:21 PM EDT for 12 counties in Virginia; 8 counties in North Carolina. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued: Jun 7, 2019, 8:21 PM EDT (00:21 UTC)
Expired: Jun 9, 2019, 8:00 PM EDT
In force: 48 hr
Issued by: NWS Blacksburg, VA
Flood severity: None

Counties Alleghany County, NC, Ashe County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Watauga County, NC, Wilkes County, NC, Yadkin County, NC, Carroll County, VA, City of Galax, VA, City of Martinsville, VA, City of Roanoke, VA, City of Salem, VA, Floyd County, VA, Franklin County, VA, Grayson County, VA, Henry County, VA, Montgomery County, VA, Patrick County, VA, Roanoke County, VA

The radar

The Roanoke radar (KFCX), 44 km from the middle of the area, began a volume at 00:23 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

Roanoke, VA (KRNK), launched 00:00Z, 0.4 hours before the alert went out and 108 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: 627 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 143 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 flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Blacksburg, VA wrote its last area forecast discussion before this flash flood watch went out at Jun 7, 7:51 PM EDT, 30 minutes earlier.

Area forecast discussion, Jun 7, 7:51 PM EDT, 30 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, Jun 7, 3:45 PM EDT, 4 hours 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>

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 5:00 AM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Grayson, Patrick	5 hr
Jun 8, 7:48 AM EDT	Areal Flood Advisory	RNK	Floyd, Franklin, Montgomery, Roanoke, City of Roanoke, City of Salem	4 hr
Jun 8, 9:09 AM EDT	Flash Flood Warning	RNK	Floyd, Franklin, Montgomery, Roanoke	6 hr
Jun 8, 1:09 PM EDT	Areal Flood Advisory	RNK	Franklin, Henry, Patrick	4 hr
Jun 8, 2:13 PM EDT	Flash Flood Warning	RNK	Franklin, Henry, Patrick	6 hr
Jun 8, 2:54 PM EDT	Areal Flood Warning	RNK	Floyd, Franklin, Montgomery, Roanoke	6 hr
Jun 8, 7:59 PM EDT	Areal Flood Warning	RNK	Franklin, Henry, Patrick	6 hr
Jun 7, 8:18 PM EDT	Areal Flood Advisory	RNK	Alleghany, Surry	3 hr
Jun 7, 10:37 PM EDT	Areal Flood Advisory	RNK	Wilkes	4 hr
Jun 7, 11:45 PM EDT	Areal Flood Advisory	RNK	Caswell, Rockingham	4 hr
Jun 8, 1:08 AM EDT	Flash Flood Warning	RNK	Wilkes	6 hr
Jun 8, 3:10 AM EDT	Areal Flood Advisory	RNK	Alleghany, Ashe, Watauga	4 hr
Jun 8, 12:22 PM EDT	Areal Flood Advisory	RNK	Alleghany, Ashe, Wilkes	2 hr
Jun 8, 3:12 PM EDT	Special Weather Statement	RNK	Wilkes	33 min
Jun 8, 4:51 PM EDT	Special Weather Statement	RNK	Ashe	24 min
Jun 8, 6:48 PM EDT	Special Weather Statement	RNK	Wilkes	27 min
Jun 8, 7:44 PM EDT	Flash Flood Warning	RNK	Watauga	6 hr

Nearby

Flash Flood Watches in Virginia, 2019 Flash Flood Watches in North Carolina, 2019 Every flash flood watch in 2019

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.