Alert archive / Virginia / Flash Flood Warnings in 2001

Flash Flood Warning 14, NWS Baltimore/Washington

June 22, 2001Orange County, Virginia

NWS Baltimore/Washington issued this flash flood warning at Jun 22, 2001, 12:15 AM EDT for Orange County, Virginia. It was in force for 2 hr. 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, 2001, 12:15 AM EDT (04:15 UTC)
Expired
Jun 22, 2001, 2:15 AM EDT
In force
2 hr
Issued by
NWS Baltimore/Washington
Area
Whole counties

County Orange County, VA

The radar

The Sterling radar (KLWX), 93 km from the middle of the area, began a volume at 04:15 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 4.3 hours before the alert went out and 95 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-pSkew-T log-p diagram, Washington/Dulle, VA at 00:00Z on 2001-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1501 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 00:00Z on 2001-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1501 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1196 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Jun 21, 10:07 PM EDT, 2 hours 8 minutes earlier.

Area forecast discussion, Jun 21, 10:07 PM EDT, 2 hours 8 minutes before
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In the hours before

Local storm report, Jun 21, 6:24 PM EDT, 5 hours 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
624 PM EDT THU JUN 21 2001

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0617 PM    LAUREL                    MD   1.00 INCH HAIL
06/21/01   PRINCE GEORGES

JLW
Local storm report, Jun 21, 8:18 PM EDT, 3 hours 57 minutes before
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<html lang="en">
<head>
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  <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.
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Local storm report, Jun 21, 10:32 PM 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>
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 8:10 PM EDTSevere Thunderstorm WarningLWXShenandoah65 min
Jun 22, 1:23 PM EDTFlash Flood WarningLWXFrederick3 hr
Jun 22, 1:39 PM EDTSevere Thunderstorm WarningLWXWarren51 min
Jun 22, 2:00 PM EDTSevere Thunderstorm WarningLWXFrederick, City of Winchester45 min
Jun 22, 4:08 PM EDTTornado WarningLWXClarke, Warren37 min
Jun 22, 4:13 PM EDTFlash Flood WarningLWXFrederick, City of Winchester3 hr
Jun 22, 4:20 PM EDTSevere Thunderstorm WarningLWXCulpeper, Fauquier, Rappahannock55 min
Jun 22, 4:23 PM EDTFlash Flood WarningLWXShenandoah, Warren3 hr
Jun 22, 4:40 PM EDTFlash Flood WarningLWXNelson3 hr
Jun 22, 5:34 PM EDTFlash Flood WarningLWXLoudoun116 min
Jun 22, 6:03 PM EDTSevere Thunderstorm WarningLWXLoudoun57 min
Jun 22, 6:09 PM EDTFlash Flood WarningLWXRockingham3 hr
Jun 22, 7:22 PM EDTFlash Flood WarningLWXShenandoah3 hr
Jun 22, 7:24 PM EDTFlash Flood WarningLWXLoudoun3 hr
Jun 22, 7:31 PM EDTSevere Thunderstorm WarningLWXPrince William, City of Manassas, City of Manassas Park59 min
Jun 22, 7:31 PM EDTSevere Thunderstorm WarningLWXFauquier59 min
Jun 22, 3:56 PM EDTSevere Thunderstorm WarningLWXFrederick49 min
Jun 22, 4:30 PM EDTFlash Flood WarningLWXAllegany3 hr
Jun 22, 4:34 PM EDTSevere Thunderstorm WarningLWXMontgomery41 min
Jun 22, 4:43 PM EDTSevere Thunderstorm WarningLWXFrederick47 min
Jun 22, 6:58 PM EDTFlash Flood WarningLWXCarroll3 hr
Jun 22, 5:24 PM EDTFlash Flood WarningLWXHardy3 hr

Nearby

Flash Flood Warnings in Virginia, 2001Every flash flood warning in 2001

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.