Alert archive / Pennsylvania / Flash Flood Warnings in 1997

Flash Flood Warning 4, NWS Pittsburgh, PA

February 5, 1997Armstrong County, Clarion County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Feb 5, 1997, 1:51 AM EST for Armstrong County, Clarion County, Pennsylvania. It was in force for 6 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
Feb 5, 1997, 1:51 AM EST (06:51 UTC)
Expired
Feb 5, 1997, 8:00 AM EST
In force
6 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Armstrong County, PA, Clarion County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 6.9 hours before the alert went out and 86 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 1997-02-05Temperature 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 00:00Z on 1997-02-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 860 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
631 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
860 m²/s²
0-3 km storm-relative helicity
982 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 050654
FFWPIT
PAC005-031-051300-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
151 AM EST WED FEB 5 1997
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  800 AM EST
FOR THE FOLLOWING LOCATIONS...
 
IN WEST PENNSYLVANIA
 
   ...ARMSTRONG COUNTY...CLARION COUNTY
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A FLASH FLOOD
WARNING FOR ICE JAM FLOODING ALONG RED BANK CREEK BETWEEN FAIRMOUNT CITY
AND NEW BETHLEHEM. THE CREEK IS OUT OF ITS BANKS AND WATER IS
APPROACHING ROUTE 28.
 
THE ICE JAM MAY MOVE AND CAUSE FURTHER FLOODING DOWNSTREAM LATER TONIGHT 
 
 
 
BE CAREFUL AT NIGHT WHEN IT IS HARDERx TO RECOGNIZE THE DANGER OF
FLOODS.  IF YOU GET ANY INDICATION THAT FLOODS ARE
APPROACHING...QUICKLY  MOVE UP TO ESCAPE FLOOD WATERS.  DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

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.