Alert archive / Virginia / Flash Flood Warnings in 1990

Flash Flood Warning 16, NWS Baltimore/Washington

October 13, 1990Culpeper County, Madison County, Rappahannock County, Virginia

NWS Baltimore/Washington issued this flash flood warning at Oct 13, 1990, 4:09 AM EDT for Culpeper County, Madison County, Rappahannock County, Virginia. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Oct 13, 1990, 4:09 AM EDT (08:09 UTC)
Expired
Oct 13, 1990, 6:15 AM EDT
In force
2 hr
Issued by
NWS Baltimore/Washington
Area
Whole counties

Counties Culpeper County, VA, Madison County, VA, Rappahannock County, VA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 8.2 hours before the alert went out and 79 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 1990-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 22 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 00:00Z on 1990-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 75 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
22 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
775 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
75 m²/s²
0-3 km storm-relative helicity
164 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
Oct 13, 2:12 AM EDTFlash Flood WarningLWXFrederick3 hr
Oct 13, 4:16 AM EDTFlash Flood WarningLWXWashington3 hr
Oct 13, 1:06 AM EDTFlash Flood WarningLWXGreene, Madison, Orange3 hr
Oct 13, 1:06 AM EDTFlash Flood WarningLWXCulpeper, Rappahannock3 hr
Oct 13, 2:12 AM EDTFlash Flood WarningLWXClarke, Frederick, Page, Warren3 hr
Oct 13, 4:09 AM EDTFlash Flood WarningLWXGreene, Orange2 hr
Oct 13, 4:59 AM EDTFlash Flood WarningLWXClarke, Frederick61 min
Oct 13, 6:06 AM EDTFlash Flood WarningLWXClarke, Frederick69 min
Oct 13, 2:12 AM EDTFlash Flood WarningLWXJefferson3 hr

Nearby

Flash Flood Warnings in Virginia, 1990Every flash flood warning in 1990

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.