Alert archive / Pennsylvania / Flash Flood Warnings in 1997

Flash Flood Warning 86, NWS Pittsburgh, PA

November 8, 1997Armstrong County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Nov 8, 1997, 1:29 AM EST for Armstrong County, Pennsylvania. It was in force for 5 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 8, 1997, 1:29 AM EST (06:29 UTC)
Expired
Nov 8, 1997, 6:30 AM EST
In force
5 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Armstrong County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 6.5 hours before the alert went out and 70 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 1997-11-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 1997-11-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
108 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 080637
FFWPIT
PAC005-081130-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
129 AM EST SAT NOV 8 1997
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  630 AM EST
FOR THE FOLLOWING LOCATION...
 
IN WEST PENNSYLVANIA
 
   ...ARMSTRONG COUNTY
 
WEATHER RADAR SHOWED HEAVY RAIN CAPABLE OF CAUSING FLOODING WILL
CONTINUE TO MOVE SLOWLY WESTWARD ACROSS MUCH OF ARMSTRONG COUNTY
THROUGH 3 OR 4 AM.
 
THESE HEAVY RAINS HAVE CAUSED BETTER THAN 2 INCHES OF RAIN IN THE LAST
24 HOURS. SOME LOCATIONS IN NEARBY COUNTIES TO THE EAST HAVE HAD
FLOODING PROBLEMS LIKE FLOODED ROADS AND MUDSLIDES WITH SOME SMALL
STREAMS OVERFLOWING THEIR BANKS.
 
 
 
DO NOT DRIVE INTO AREAS WHERE THE WATER COVERS THE ROAD.  THE WATER
MAY BE TOO DEEP TO ALLOW YOUR CAR TO CROSS SAFELY.  VEHICLES CAUGHT
IN RISING WATER SHOULD BE ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.

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, 8:26 PM EST, 5 hours 3 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
826 PM EST FRI NOV 07 1997

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

0544 PM    CRAMER                    PA   FLOODING
11/07/97   INDIANA                        RTE 403 NORTH BOUND LANE
                                          FLOODED

0815 PM    ROBINSON                  PA   FLOODING
11/07/97   INDIANA                        RICHARD RUN FLOODED NEAR
                                          RTE 259 AND RURAL RTE 2201
                                          AT PINKERTON CROSSINGS
Local storm report, Nov 7, 8:27 PM EST, 5 hours 2 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
826 PM EST FRI NOV 07 1997

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

0544 PM    CRAMER                    PA   FLOODING
11/07/97   INDIANA                        RTE 403 NORTH BOUND LANE
                                          FLOODED

0815 PM    ROBINSON                  PA   FLOODING
11/07/97   INDIANA                        RICHARD RUN FLOODED NEAR
                                          RTE 259 AND RURAL RTE 2201
                                          AT PINKERTON CROSSINGS
Local storm report, Nov 7, 11:40 PM EST, 1 hour 49 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
1140 PM EST FRI NOV 7 1997

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

0730 AM    NEAR FARMINGTON           PA   FLOODING
           FAYETTE                         WHARTON FURNACE ROAD
                                          FLOODED

0544 PM    CRAMER                    PA   FLOODING
           INDIANA                        RTE 403 NORTHBOUND LANE
                                          FLOODED

0550 PM    PIKESVILLE                PA   FLOODING
           JEFFERSON                       SMALL STREAMS OUT OF
                                          BANKS...LOWLAND FLOODING

0700 PM    HOMER CITY                PA   FLOODING
           INDIANA                        TEARING RUN BESIDE VILLAGE
                                          OF COY. WATER ONTO SR 2011

0815 PM    ROBINSON                  PA   FLOODING
           INDIANA                        RICHARD RUN FLOODED NEAR
                                          RTE 259 AND RURAL RTE 2201
                                          AT PINKERTON CROSSINGS

0830 PM    LIGONIER                  PA   FLOODING
           WESTMORELAND                   RTE 381 FLOODED

0830 PM    SOUTH HUNTINGTON          PA   FLOODING
           WESTMORELAND                   RTE 70 THROUGH SOUTH
                                          HUNTINGTON FLOODED

0900 PM    NEAR SMITHTON             PA   ROCK SLIDE ONTO PORTION
           WESTMORELAND                   OF RTE 70 AT THE
                                          SMITHTON BRIDGE

1120 PM    SHELOCTA                  PA   FLOODING
           INDIANA/WESTMORELAND           RAILROAD UNDERPASS AT
           LINE                           SEWARD FLOODED OUT

RSH/RRR/ROR
Local storm report, Nov 7, 11:56 PM EST, 1 hour 33 minutes before
STORM REPORT...CORRECTION...
NATIONAL WEATHER SERVICE PITTSBURGH, PA
1156 PM EST FRI NOV 7 1997

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

0730 AM    NEAR FARMINGTON           PA   FLOODING
           FAYETTE                         WHARTON FURNACE ROAD
                                          FLOODED

0544 PM    CRAMER                    PA   FLOODING
           INDIANA                        RTE 403 NORTHBOUND LANE
                                          FLOODED

0350 PM*   PIKESVILLE                PA   FLOODING
           JEFFERSON                       SMALL STREAMS OUT OF
                                          BANKS...LOWLAND FLOODING

0700 PM    HOMER CITY                PA   FLOODING
           INDIANA                        TEARING RUN BESIDE VILLAGE
                                          OF COY. WATER ONTO SR 2011

0815 PM    ROBINSON                  PA   FLOODING
           INDIANA                        RICHARD RUN FLOODED NEAR
                                          RTE 259 AND RURAL RTE 2201
                                          AT PINKERTON CROSSINGS

0830 PM    LIGONIER                  PA   FLOODING
           WESTMORELAND                   RTE 381 FLOODED

0830 PM    SOUTH HUNTINGTON          PA   FLOODING
           WESTMORELAND                   RTE 70 THROUGH SOUTH
                                          HUNTINGTON FLOODED

0900 PM    NEAR SMITHTON             PA   ROCK SLIDE ONTO PORTION
           WESTMORELAND                   OF RTE 70 AT THE
                                          SMITHTON BRIDGE

1120 PM    SHELOCTA                  PA   FLOODING
           INDIANA/WESTMORELAND           RAILROAD UNDERPASS AT
           LINE                           SEWARD FLOODED OUT
*...CORRECTED TIME FOR PIKEVILLE REPORT
RSH/RRR/ROR

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 7, 9:45 PM ESTFlash Flood WarningPBZIndiana, Westmoreland6 hr
Nov 8, 3:58 AM ESTFlash Flood WarningPBZIndiana, Westmoreland4 hr
Nov 8, 6:28 AM ESTFlash Flood WarningPBZJefferson5 hr
Nov 8, 7:58 AM ESTFlash Flood WarningPBZIndiana, Westmoreland6 hr
Nov 8, 8:25 AM ESTFlash Flood WarningPBZIndiana, Westmoreland6 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.