Alert archive / Virginia / Flash Flood Warnings in 2020

Flash Flood Warning 34, NWS Baltimore/Washington

August 6, 2020Loudoun County, Virginia

NWS Baltimore/Washington issued this flash flood warning at Aug 6, 2020, 10:13 PM EDT for Loudoun County, Virginia. It was in force for 96 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: Aug 6, 2020, 10:13 PM EDT (02:13 UTC)
Expired: Aug 6, 2020, 11:49 PM EDT
In force: 96 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon
Emergency: Flash flood emergency
Damage threat: Catastrophic
Flood severity: None

County Loudoun County, VA

The radar

The Sterling radar (KLWX), 18 km from the middle of the area, began a volume at 02:16 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.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before this flash flood warning went out at Aug 6, 2:41 PM EDT, 7 hours 32 minutes earlier.

Area forecast discussion, Aug 6, 2:41 PM EDT, 7 hours 32 minutes before

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Hazardous weather outlook, Aug 6, 1:52 PM EDT, 8 hours 21 minutes before

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In the hours before

Local storm report, Aug 6, 5:47 PM EDT, 4 hours 26 minutes before

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Local storm report, Aug 6, 7:43 PM EDT, 2 hours 30 minutes before

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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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Local storm report, Aug 6, 7:47 PM EDT, 2 hours 26 minutes before

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      <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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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, Aug 6, 7:52 PM EDT, 2 hours 21 minutes before

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      <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.
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Local storm report, Aug 6, 7:56 PM EDT, 2 hours 17 minutes before

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<body>
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      <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>
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Local storm report, Aug 6, 7:59 PM EDT, 2 hours 14 minutes before

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<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>
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</body>
</html>

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 6, 8:54 PM EDT	Areal Flood Warning	LWX	Loudoun	6 hr
Aug 6, 8:56 PM EDT	Severe Thunderstorm Warning	LWX	Loudoun	49 min
Aug 6, 9:06 PM EDT	Flash Flood Warning Considerable damage threat	LWX	Loudoun	3 hr
Aug 6, 9:34 PM EDT	Areal Flood Warning	LWX	Spotsylvania	2 hr
Aug 6, 10:09 PM EDT	Flash Flood Warning Considerable damage threat	LWX	Loudoun	4 hr
Aug 7, 2:04 AM EDT	Areal Flood Warning	LWX	Loudoun	3 hr
Aug 7, 2:21 AM EDT	Areal Flood Warning	LWX	Loudoun	5 hr
Aug 7, 3:46 AM EDT	Flash Flood Watch	LWX	Albemarle, Amherst, Arlington, Augusta, Culpeper, Fairfax and 22 more	21 hr
Aug 7, 2:33 PM EDT	Severe Thunderstorm Warning	LWX	Augusta, Rockingham	42 min
Aug 7, 4:39 PM EDT	Severe Thunderstorm Warning	LWX	Augusta, Rockingham, City of Staunton	51 min
Aug 7, 5:13 PM EDT	Severe Thunderstorm Warning	LWX	Augusta, City of Waynesboro	47 min
Aug 7, 5:39 PM EDT	Special Marine Warning	LWX		2 hr
Aug 7, 6:52 PM EDT	Special Marine Warning	LWX		2 hr
Aug 7, 7:08 PM EDT	Severe Thunderstorm Warning	LWX	Augusta, City of Waynesboro	52 min
Aug 6, 9:07 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	38 min
Aug 7, 2:08 PM EDT	Severe Thunderstorm Warning	LWX	Frederick, Washington	52 min
Aug 7, 2:48 PM EDT	Severe Thunderstorm Warning	LWX	Carroll, Frederick	36 min
Aug 7, 4:26 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	49 min
Aug 7, 4:53 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	27 min
Aug 7, 5:03 PM EDT	Severe Thunderstorm Warning	LWX	Allegany	42 min
Aug 7, 5:28 PM EDT	Areal Flood Warning	LWX	Baltimore, Harford	4 hr
Aug 7, 5:36 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	39 min
Aug 7, 6:04 PM EDT	Severe Thunderstorm Warning	LWX	Harford	41 min
Aug 7, 6:12 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	48 min
Aug 7, 6:15 PM EDT	Areal Flood Warning	LWX	Harford	6 hr
Aug 7, 7:39 PM EDT	Areal Flood Warning	LWX	Anne Arundel, Baltimore	5 hr
Aug 7, 7:41 PM EDT	Flash Flood Warning Considerable damage threat	LWX	Baltimore, Harford	104 min
Aug 7, 5:15 PM EDT	Severe Thunderstorm Warning	LWX	Pendleton	45 min
Aug 7, 5:40 PM EDT	Severe Thunderstorm Warning	LWX	Pendleton	50 min

Nearby

Flash Flood Warnings in Virginia, 2020 Every flash flood warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.