Alert archive / Virginia / Flash Flood Warnings in 1998

Flash Flood Warning 18, NWS Baltimore/Washington

January 8, 1998Albemarle County, Virginia

NWS Baltimore/Washington issued this flash flood warning at Jan 8, 1998, 11:02 AM EST for Albemarle County, Virginia. It was in force for 118 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
Jan 8, 1998, 11:02 AM EST (16:02 UTC)
Expired
Jan 8, 1998, 1:00 PM EST
In force
118 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

County Albemarle County, VA

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 4.0 hours before the alert went out and 124 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, Roanoke, VA at 12:00Z on 1998-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 297 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, Roanoke, VA at 12:00Z on 1998-01-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 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
297 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
588 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

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
Jan 8, 3:43 AM ESTFlash Flood WarningLWXAlbemarle, Augusta, Nelson, Rockingham5 hr
Jan 8, 3:43 AM ESTFlash Flood WarningLWXCity of Staunton5 hr
Jan 8, 3:43 AM ESTFlash Flood WarningLWXCity of Harrisonburg5 hr
Jan 8, 3:43 AM ESTFlash Flood WarningLWXPage5 hr
Jan 8, 3:43 AM ESTFlash Flood WarningLWXHighland5 hr
Jan 8, 3:43 AM ESTFlash Flood WarningLWXCity of Waynesboro5 hr
Jan 8, 6:27 AM ESTFlash Flood WarningLWXShenandoah3 hr
Jan 8, 6:57 AM ESTFlash Flood WarningLWXLoudoun2 hr
Jan 8, 6:57 AM ESTFlash Flood WarningLWXClarke2 hr
Jan 8, 8:13 AM ESTFlash Flood WarningLWXAlbemarle, Greene3 hr
Jan 8, 8:13 AM ESTFlash Flood WarningLWXCulpeper, Fauquier, Rappahannock3 hr
Jan 8, 8:13 AM ESTFlash Flood WarningLWXMadison3 hr
Jan 8, 9:08 AM ESTFlash Flood WarningLWXPage, Rockingham, Shenandoah, Warren4 hr
Jan 8, 9:08 AM ESTFlash Flood WarningLWXAugusta, Nelson4 hr
Jan 8, 9:08 AM ESTFlash Flood WarningLWXClarke, Loudoun4 hr
Jan 8, 11:02 AM ESTFlash Flood WarningLWXCulpeper, Greene, Madison, Rappahannock118 min
Jan 8, 11:02 AM ESTFlash Flood WarningLWXFauquier118 min
Jan 8, 9:08 AM ESTFlash Flood WarningLWXFrederick4 hr

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.