Alert archive / West Virginia / Flash Flood Warnings in 1998

Flash Flood Warning 21, NWS Pittsburgh, PA

January 9, 1998Brooke County, Hancock County, Ohio County, West Virginia

NWS Pittsburgh, PA issued this flash flood warning at Jan 9, 1998, 12:42 AM EST for Brooke County, Hancock County, Ohio County, West Virginia. It was in force for 3 hr. 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 9, 1998, 12:42 AM EST (05:42 UTC)
Expired
Jan 9, 1998, 4:00 AM EST
In force
3 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Brooke County, WV, Hancock County, WV, Ohio County, WV

The radar

The Pittsburgh radar (KPBZ), 41 km from the middle of the area, began a volume at 05:44 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

Pittsburgh, PA (KPIT), launched 00:00Z, 5.7 hours before the alert went out and 43 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, Pittsburgh, PA at 00:00Z on 1998-01-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 598 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, Pittsburgh, PA at 00:00Z on 1998-01-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.1939587897117136Sfc1 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
598 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
551 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIT 090543
FFWPIT
OHC067-081-PAC007-WVC009-029-069-090900-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
1242 AM EST FRI JAN 9 1998
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  400 AM EST
FOR THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL OHIO
 
   ...HARRISON COUNTY...JEFFERSON COUNTY
 
 
IN WEST PENNSYLVANIA
 
   ...BEAVER COUNTY
 
 
IN THE WEST VIRGINIA PANHANDLE
 
   ...BROOKE COUNTY...HANCOCK COUNTY...OHIO COUNTY
 
THUNDERSTORMS WITH TORRENTIAL RAINS WERE MOVING NORTH ALONG THE OHIO
RIVER. RECENT RAINS HAVE SATURATED THE GROUND AND THIS ADDITIONAL
RAINFALL WILL LIKELY RUSULT IN MORE FLOODING. A QUICK INCH OF RAIN WILL
LIKELY CAUSE FLASH FLOODING.
 
MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT
TO CROSS BRIDGES OR LOW SPOTS IF WATER COVERS THE ROADWAY.  NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.
 
PM

The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 9, 1:03 AM ESTSevere Thunderstorm WarningPBZMarshall57 min

Nearby

Flash Flood Warnings in West 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; radar from the NEXRAD Level II archive.