Alert archive / West Virginia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 227, NWS Baltimore/Washington

August 9, 2000Pendleton County, West Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 9, 2000, 2:36 PM EDT for Pendleton County, West Virginia. It was in force for 54 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
Aug 9, 2000, 2:36 PM EDT (18:36 UTC)
Expired
Aug 9, 2000, 3:30 PM EDT
In force
54 min
Issued by
NWS Baltimore/Washington
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Pendleton County, WV

The radar

The Sterling radar (KLWX), 165 km from the middle of the area, began a volume at 18:37 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

TimeReportWhereRemark
Aug 9, 3:10 PM EDTThunderstorm WindCountywide, WVTrees were downed.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 9, 1:00 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 6.6 hours before the alert went out and 165 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, Roanoke, VA at 12:00Z on 2000-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 455 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, Roanoke, VA at 12:00Z on 2000-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 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
455 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
23 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 9, 10:10 AM EDT, 4 hours 26 minutes earlier.

Area forecast discussion, Aug 9, 10:10 AM EDT, 4 hours 26 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 2:46 PM EDTSevere Thunderstorm WarningLWXAugusta, City of Staunton44 min
Aug 9, 2:46 PM EDTSevere Thunderstorm WarningLWXHighland44 min
Aug 9, 3:01 PM EDTSevere Thunderstorm WarningLWXPage, Rockingham, Shenandoah44 min
Aug 9, 3:01 PM EDTSevere Thunderstorm WarningLWXCity of Harrisonburg44 min
Aug 9, 3:24 PM EDTSevere Thunderstorm WarningLWXFrederick, Shenandoah, Warren66 min
Aug 9, 3:24 PM EDTSevere Thunderstorm WarningLWXCity of Winchester66 min
Aug 9, 3:44 PM EDTSevere Thunderstorm WarningLWXAlbemarle, City of Charlottesville46 min
Aug 9, 3:44 PM EDTSevere Thunderstorm WarningLWXGreene, Madison, Page, Rockingham46 min
Aug 9, 3:44 PM EDTSevere Thunderstorm WarningLWXAugusta, City of Staunton, City of Waynesboro46 min
Aug 9, 3:44 PM EDTSevere Thunderstorm WarningLWXCulpeper, Rappahannock46 min
Aug 9, 3:44 PM EDTSevere Thunderstorm WarningLWXCity of Harrisonburg46 min
Aug 9, 4:24 PM EDTSevere Thunderstorm WarningLWXClarke, Frederick66 min
Aug 9, 4:24 PM EDTSevere Thunderstorm WarningLWXFairfax, Loudoun, Prince William, City of Fairfax, City of Falls Church66 min
Aug 9, 4:24 PM EDTSevere Thunderstorm WarningLWXCulpeper, Fauquier, Stafford, Warren66 min
Aug 9, 4:24 PM EDTSevere Thunderstorm WarningLWXSpotsylvania, City of Fredericksburg66 min
Aug 9, 4:24 PM EDTSevere Thunderstorm WarningLWXOrange66 min
Aug 9, 4:24 PM EDTSevere Thunderstorm WarningLWXCity of Winchester66 min
Aug 9, 4:24 PM EDTSevere Thunderstorm WarningLWXCity of Manassas, City of Manassas Park66 min
Aug 9, 5:25 PM EDTSevere Thunderstorm WarningLWXKing George, Prince William, Stafford65 min
Aug 9, 5:25 PM EDTSevere Thunderstorm WarningLWXFairfax65 min
Aug 9, 5:25 PM EDTSevere Thunderstorm WarningLWXArlington65 min
Aug 9, 5:25 PM EDTSevere Thunderstorm WarningLWXCity of Fairfax65 min
Aug 9, 5:25 PM EDTSevere Thunderstorm WarningLWXCity of Falls Church65 min
Aug 9, 5:25 PM EDTSevere Thunderstorm WarningLWXCity of Alexandria65 min
Aug 9, 2:36 PM EDTSevere Thunderstorm WarningLWXGrant, Hampshire, Hardy, Mineral54 min
Aug 9, 3:24 PM EDTSevere Thunderstorm WarningLWXHampshire, Hardy66 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2000Every 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.