Alert archive / West Virginia / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 2, NWS Baltimore/Washington

April 9, 1995Jefferson County, West Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Apr 9, 1995, 7:25 PM EDT for Jefferson County, West Virginia. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Apr 9, 1995, 7:25 PM EDT (23:25 UTC)
Expired
Apr 9, 1995, 8:30 PM EDT
In force
65 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

County Jefferson County, WV

The radar

The Sterling radar (KLWX), 49 km from the middle of the area, began a volume at 23:25 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 12:00Z, 11.4 hours before the alert went out and 56 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 12:00Z on 1995-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1995-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1180 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
29 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 9, 7:32 PM EDTSevere Thunderstorm WarningLWXClarke, Frederick43 min
Apr 9, 7:41 PM EDTSevere Thunderstorm WarningLWXLoudoun53 min
Apr 9, 7:25 PM EDTSevere Thunderstorm WarningLWXFrederick, Washington65 min
Apr 9, 7:54 PM EDTSevere Thunderstorm WarningLWXCarroll40 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 1995Every severe thunderstorm warning 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.