Alert archive / Virginia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 170, NWS Wakefield, VA

July 15, 2000Louisa County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Jul 15, 2000, 3:55 PM EDT for Louisa County, Virginia. It was in force for 50 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 15, 2000, 3:55 PM EDT (19:55 UTC)
Expired: Jul 15, 2000, 4:45 PM EDT
In force: 50 min
Issued by: NWS Wakefield, VA
Area: Whole counties

County Louisa County, VA

The radar

The Sterling radar (KLWX), 118 km from the middle of the area, began a volume at 19:54 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 was reported inside it

Time	Report	Where	Remark
Jul 15, 4:05 PM EDT	Thunderstorm Wind	Mineral, VA	Several large trees down on Routes 522 and 605.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.9 hours before the alert went out and 119 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: 64 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 629 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wakefield, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 15, 2:45 PM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, Jul 15, 2:45 PM EDT, 1 hour 10 minutes before

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In the hours before

Local storm report, Jul 15, 10:34 AM EDT, 5 hours 21 minutes before

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  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 1:17 AM EDT	Severe Thunderstorm Warning	AKQ	Westmoreland	43 min
Jul 15, 1:24 AM EDT	Flash Flood Warning	AKQ	Caroline, Essex, Goochland, Hanover, Louisa, Richmond and 1 more	81 min
Jul 15, 1:57 AM EDT	Severe Thunderstorm Warning	AKQ	Westmoreland	18 min
Jul 15, 7:34 PM EDT	Severe Thunderstorm Warning	AKQ	Middlesex	26 min
Jul 15, 1:12 AM EDT	Flash Flood Warning	AKQ	Dorchester, Wicomico	93 min
Jul 15, 1:17 AM EDT	Severe Thunderstorm Warning	AKQ	Dorchester, Wicomico	43 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2000 Every severe thunderstorm warning in 2000

Sources

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