Alert archive / Virginia / Flash Flood Warnings in 1998

Flash Flood Warning 113, NWS Baltimore/Washington

June 15, 1998Shenandoah County, Warren County, Virginia

NWS Baltimore/Washington issued this flash flood warning at Jun 15, 1998, 4:21 PM EDT for Shenandoah County, Warren County, Virginia. It was in force for 94 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 15, 1998, 4:21 PM EDT (20:21 UTC)
Expired
Jun 15, 1998, 5:55 PM EDT
In force
94 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

Counties Shenandoah County, VA, Warren County, VA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.4 hours before the alert went out and 86 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 1998-06-15Temperature 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 1998-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
697 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
299 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KWBC 152020
FFWWBC
VAC171-187-152150-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
421 PM EDT MON JUN 15 1998

THE NATIONAL WEATHER SERVICE IN STERLING VA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN SHENANDOAH COUNTY VA
  WARREN COUNTY VA

* UNTIL 555 PM EDT

* AT 416 PM EDT... THUNDERSTORMS WITH HEAVY RAIN WERE INDICATED BY
  DOPPLER RADAR AND AUTOMATED RAIN GAGES OVER WARREN AND
  SHENANDOAH COUNTIES IN VA... MOVING EAST NORTHEAST AT 30 MPH..

* IFLOWS (AUTOMATED RAIN GAGES) HAS REPORTED 2 INCHES OF RAIN IN 2 HOURS
  OVER WARREN COUNTY. FLASH FLOODING IS LIKELY. SURFACE REPORTS OF 2.5
  INCHES HAVE BEEN RECEIVED FROM WOODSTOCK VA.

DO NOT STAY IN AREAS SUBJECT TO FLOODING. NEVER DRIVE YOUR VEHICLE
INTO AREAS WHERE WATER COVERS TO THE ROAD. THE WATER MAY BE TOO DEEP
TO ALLOW YOU CAR TO CROSS SAFELY.

STAY TUNED TO TV...RADIO AND NOAA WEATHER RADIO FOR UPDATES AND
WARNINGS.

ADS/ABW

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 2:40 PM EDTSevere Thunderstorm WarningLWXShenandoah50 min
Jun 15, 3:05 PM EDTSevere Thunderstorm WarningLWXWarren50 min
Jun 15, 3:24 PM EDTSevere Thunderstorm WarningLWXFauquier51 min
Jun 15, 3:33 PM EDTSevere Thunderstorm WarningLWXAlbemarle27 min
Jun 15, 3:48 PM EDTSevere Thunderstorm WarningLWXWarren32 min
Jun 15, 4:14 PM EDTSevere Thunderstorm WarningLWXFauquier51 min
Jun 15, 4:40 PM EDTSevere Thunderstorm WarningLWXFairfax, Prince William50 min
Jun 15, 4:47 PM EDTSevere Thunderstorm WarningLWXLoudoun48 min
Jun 15, 4:57 PM EDTSevere Thunderstorm WarningLWXFairfax, City of Fairfax48 min
Jun 15, 4:57 PM EDTSevere Thunderstorm WarningLWXArlington, City of Falls Church48 min
Jun 15, 5:11 PM EDTSevere Thunderstorm WarningLWXCity of Alexandria49 min
Jun 15, 5:13 PM EDTSevere Thunderstorm WarningLWXFauquier47 min
Jun 15, 5:18 PM EDTSevere Thunderstorm WarningLWXPrince William, City of Manassas, City of Manassas Park47 min
Jun 15, 5:27 PM EDTSevere Thunderstorm WarningLWXPrince William48 min
Jun 15, 5:38 PM EDTSevere Thunderstorm WarningLWXRappahannock62 min
Jun 15, 6:45 PM EDTSevere Thunderstorm WarningLWXPrince William, Stafford50 min

Nearby

Flash Flood Warnings in Virginia, 1998Every flash flood warning in 1998

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.