Alert archive / West Virginia / Flash Flood Warnings in 1990

Flash Flood Warning 65, NWS Pittsburgh, PA

July 15, 1990Greene County, Pennsylvania; Marshall County, Ohio County, West Virginia

NWS Pittsburgh, PA issued this flash flood warning at Jul 15, 1990, 2:45 AM EDT for Greene County, Pennsylvania; Marshall County, Ohio County, West Virginia. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Jul 15, 1990, 2:45 AM EDT (06:45 UTC)
Expired
Jul 15, 1990, 8:00 AM EDT
In force
5 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Greene County, PA, Marshall County, WV, Ohio County, WV

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

Pittsburgh, PA (KPIT), launched 00:00Z, 6.8 hours before the alert went out and 63 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 1990-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 196 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 1990-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 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
196 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
784 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPIT 150650
FFWPIT
PAC007-059-125-WVC009-029-051-069-151200-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
245 AM EDT SUN JUL 15 1990
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS EXTENDED THE
FLASH FLOOD WARNING UNTIL  800 AM EDT
FOR THE FOLLOWING LOCATIONS...
 
IN WEST PENNSYLVANIA
 
   ...BEAVER COUNTY...GREENE COUNTY...WASHINGTON COUNTY
 
 
IN THE WEST VIRGINIA PANHANDLE
 
   ...BROOKE COUNTY...HANCOCK COUNTY...MARSHALL COUNTY...OHIO COUNTY

TORRENTIAL RAINS CONTINUE OVER THE NORTHERN PANHANDLE OF WEST
VIRGINIA...IN THE COUNTIES OF BROOKE OHIO...MARSHALL...AND HANCOCK...AS
WELL AS BEAVER COUNTY IN PENNSYLVANIA.

THERE HAVE BEEN NUMEROUS REPORTS OF SERIOUS FLOODING IN THE WHEELING
AREA IN OHIO COUNTY ALONG LONG RUN.  3.00 INCHES OF RAIN WAS REPORTED
THERE.  ALSO ROAD FLOODING WAS OCCURING IN BROOKE COUNTY.

THE HEAVY RAINS THAT ARE FALLING OVER THE PANHANDLE OF WEST VIRGINIA
WILL BE MOVING INTO THE WASHINGTON AND GREENE COUNTIES.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT'S
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  CAMPERS SHOULD
AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 11:13 PM EDTFlash Flood WarningPBZBeaver, Washington5 hr
Jul 14, 11:13 PM EDTFlash Flood WarningPBZGreene5 hr
Jul 15, 2:45 AM EDTFlash Flood WarningPBZBeaver, Washington5 hr
Jul 15, 4:43 AM EDTFlash Flood WarningPBZAllegheny, Butler3 hr
Jul 15, 7:08 AM EDTFlash Flood WarningPBZButler3 hr
Jul 15, 12:36 PM EDTFlash Flood WarningPBZFayette2 hr
Jul 15, 1:00 PM EDTFlash Flood WarningPBZWestmoreland2 hr
Jul 15, 2:30 PM EDTFlash Flood WarningPBZSomerset2 hr
Jul 15, 2:30 PM EDTFlash Flood WarningPBZIndiana2 hr
Jul 15, 2:52 PM EDTFlash Flood WarningPBZBeaver, Butler2 hr
Jul 15, 3:15 PM EDTFlash Flood WarningPBZWestmoreland75 min
Jul 15, 3:50 PM EDTFlash Flood WarningPBZBedford, Cambria2 hr
Jul 15, 4:17 PM EDTFlash Flood WarningPBZBlair, Clearfield3 hr
Jul 15, 4:53 PM EDTFlash Flood WarningPBZBeaver3 hr
Jul 14, 11:13 PM EDTFlash Flood WarningPBZOhio5 hr
Jul 15, 2:45 AM EDTFlash Flood WarningPBZBrooke5 hr
Jul 15, 7:08 AM EDTFlash Flood WarningPBZBrooke, Hancock3 hr
Jul 15, 12:15 PM EDTFlash Flood WarningPBZBrooke, Ohio3 hr
Jul 15, 12:15 PM EDTFlash Flood WarningPBZHancock3 hr

Nearby

Flash Flood Warnings in West Virginia, 1990Flash Flood Warnings in Pennsylvania, 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.