Alert archive / Virginia / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 13, NWS Baltimore/Washington

April 16, 1993Fauquier County, Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at Apr 16, 1993, 8:25 AM EDT for Fauquier County, Virginia. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Apr 16, 1993, 8:25 AM EDT (12:25 UTC)
Expired
Apr 16, 1993, 9:30 AM EDT
In force
65 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

County Fauquier County, VA

The radar

The Sterling radar (KLWX), 38 km from the middle of the area, began a volume at 12:28 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, 0.4 hours before the alert went out and 42 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 1993-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 286 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, Washington/Dulle, VA at 12:00Z on 1993-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 square meters per square second.1939587897Sfc1 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
286 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
643 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
284 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.4

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 16, 8:52 AM EDTFlash Flood WarningLWXPage, Rappahannock, Warren4 hr
Apr 16, 8:52 AM EDTFlash Flood WarningLWXClarke4 hr
Apr 16, 9:29 AM EDTSevere Thunderstorm WarningLWXStafford31 min
Apr 16, 9:37 AM EDTSevere Thunderstorm WarningLWXPrince William43 min
Apr 16, 9:43 AM EDTFlash Flood WarningLWXCity of Winchester3 hr
Apr 16, 9:43 AM EDTFlash Flood WarningLWXShenandoah3 hr
Apr 16, 9:51 AM EDTSevere Thunderstorm WarningLWXArlington, Fairfax54 min
Apr 16, 10:34 AM EDTSevere Thunderstorm WarningLWXFauquier41 min
Apr 16, 10:45 AM EDTSevere Thunderstorm WarningLWXPrince William45 min
Apr 16, 10:55 AM EDTTornado WarningLWXPrince William35 min
Apr 16, 11:28 AM EDTFlash Flood WarningLWXFairfax, Loudoun2 hr
Apr 16, 9:07 AM EDTFlash Flood WarningLWXFrederick, Washington4 hr
Apr 16, 2:01 PM EDTFlash Flood WarningLWXHoward3 hr
Apr 16, 7:16 PM EDTFlash Flood WarningLWXWashington59 min
Apr 16, 7:16 PM EDTSevere Thunderstorm WarningLWXWashington59 min

Nearby

Severe Thunderstorm Warnings in Virginia, 1993Every severe thunderstorm warning in 1993

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.