Alert archive / Virginia / Tornado Warnings in 1995

Tornado Warning 11, NWS Baltimore/Washington

October 20, 1995Frederick County, Virginia

NWS Baltimore/Washington issued this tornado warning at Oct 20, 1995, 11:09 PM EDT for Frederick County, Virginia. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Oct 20, 1995, 11:09 PM EDT (03:09 UTC)
Expired
Oct 20, 1995, 11:45 PM EDT
In force
36 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

County Frederick County, VA

The radar

The Sterling radar (KLWX), 72 km from the middle of the area, began a volume at 03:07 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, 3.2 hours before the alert went out and 80 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 1995-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 294 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 1995-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 248 square meters per square second.19395878Sfc1 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
294 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
561 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
248 m²/s²
0-3 km storm-relative helicity
324 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.2

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.

Nearby

Tornado Warnings in Virginia, 1995Every tornado warning in 1995Tornadoes in 1995

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.