Alert archive / Virginia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 259, NWS Baltimore/Washington

November 10, 2000Clarke County, Frederick County, City of Winchester, Virginia; Jefferson County, West Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Nov 10, 2000, 12:25 AM EST for Clarke County, Frederick County, City of Winchester, Virginia; Jefferson County, West Virginia. It was in force for 50 min. 2 reports 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: Nov 10, 2000, 12:25 AM EST (05:25 UTC)
Expired: Nov 10, 2000, 1:15 AM EST
In force: 50 min
Issued by: NWS Baltimore/Washington
Area: Whole counties

Counties City of Winchester, VA, Clarke County, VA, Frederick County, VA, Jefferson County, WV

The radar

The Sterling radar (KLWX), 56 km from the middle of the area, began a volume at 05:26 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
Nov 10, 12:47 AM EST	Thunderstorm Wind	Hayfield, VA	A tree was downed onto the roof of a home near Shawneeland.
Nov 10, 12:55 AM EST	Thunderstorm Wind	Berryville, VA	Two trees 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 nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 5.4 hours before the alert went out and 64 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: 510 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 300 m²/s²
0-3 km storm-relative helicity: 317 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 Nov 9, 9:30 PM EST, 2 hours 55 minutes earlier.

Area forecast discussion, Nov 9, 9:30 PM EST, 2 hours 55 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 9, 11:36 PM EST	Severe Thunderstorm Warning	LWX	Augusta, Nelson	39 min
Nov 9, 11:36 PM EST	Severe Thunderstorm Warning	LWX	City of Waynesboro	39 min
Nov 9, 11:36 PM EST	Severe Thunderstorm Warning	LWX	City of Staunton	39 min
Nov 10, 12:08 AM EST	Severe Thunderstorm Warning	LWX	Albemarle, City of Charlottesville	52 min
Nov 10, 12:51 AM EST	Severe Thunderstorm Warning	LWX	Madison, Orange	39 min
Nov 9, 10:32 PM EST	Severe Thunderstorm Warning	LWX	Allegany	58 min
Nov 9, 11:50 PM EST	Severe Thunderstorm Warning	LWX	Washington	40 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2000 Severe Thunderstorm Warnings in West 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.