Alert archive / Pennsylvania / Flash Flood Warnings in 1997

Flash Flood Warning 83, NWS Pittsburgh, PA

November 7, 1997Jefferson County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Nov 7, 1997, 1:22 PM EST for Jefferson County, Pennsylvania. It was in force for 4 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
Nov 7, 1997, 1:22 PM EST (18:22 UTC)
Expired
Nov 7, 1997, 5:30 PM EST
In force
4 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Jefferson County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 6.4 hours before the alert went out and 122 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 12:00Z on 1997-11-07Temperature 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, Pittsburgh, PA at 12:00Z on 1997-11-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
505 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
133 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 KPIT 071822
FFWPIT
PAC065-072230-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
122 PM EST FRI NOV 7 1997
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  530 PM EST
FOR THE FOLLOWING LOCATION...
 
IN WEST PENNSYLVANIA
 
   ...JEFFERSON COUNTY
 
HEAVY RAINS CONTINUE TO MOVE ACROSS JEFFERSON COUNTY. A SKYWARN OBSERVER
IN REYNOLDSVILLE REPORTED 2.25 INCHES OF RAIN AND BASEMENT FLOODING.
 
RAINFALL OF 1.0 TO 1.5 INCHES OF RAIN IN THREE HOURS WILL BRING STREAMS 
BANKFUL. RADAR ESTIMATES THAT AS MUCH AS 2 INCHES OF RAIN HAS FALLEN OVEMUCH OF SOUTHEAST JEFFERSON COUNTY BETWEEN 10 AM AND 1 PM.
 
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.
 
 
 
&

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Nov 7, 7:42 AM EST, 5 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PENNSYLVANIA
744 AM EST FRI NOV 07 1997

TIME(EST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 AM    FARMINGTON                PA   FLOODING
11/07/97   FAYETTE                        DEADMANS RUN WENT OUT OF
                                          ITS BANKS

0730 AM    FARMINGTON                PA   FLOODING
11/07/97   FAYETTE                        WHARTON-FURNACE ROAD WAS
                                          FLOODED.
Local storm report, Nov 7, 7:44 AM EST, 5 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PENNSYLVANIA
744 AM EST FRI NOV 07 1997

TIME(EST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0600 AM    FARMINGTON                PA   FLOODING
11/07/97   FAYETTE                        DEADMANS RUN WENT OUT OF
                                          ITS BANKS

0730 AM    FARMINGTON                PA   FLOODING
11/07/97   FAYETTE                        WHARTON-FURNACE ROAD WAS
                                          FLOODED.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 7, 6:08 AM ESTFlash Flood WarningPBZFayette3 hr
Nov 7, 5:20 PM ESTFlash Flood WarningPBZIndiana, Westmoreland5 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1997Every flash flood warning in 1997

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.