Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 38, NWS Pittsburgh, PA

June 24, 1995Butler County, Lawrence County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 24, 1995, 6:12 PM EDT for Butler County, Lawrence County, Pennsylvania. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 24, 1995, 6:12 PM EDT (22:12 UTC)
Expired
Jun 24, 1995, 8:15 PM EDT
In force
2 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Butler County, PA, Lawrence County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.2 hours before the alert went out and 60 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 1995-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 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 12:00Z on 1995-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.1939Sfc1 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
73 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
608 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
40 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 242212 RRA
FFWPIT
PAC073-019-250015-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
612 PM EDT SAT JUN 24 1995
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  815 PM EDT
FOR THE FOLLOWING LOCATIONS...
 
IN NORTHWEST PENNSYLVANIA
 
   ...LAWRENCE COUNTY
 
IN WEST PENNSYLVANIA
 
   ...BUTLER COUNTY
 
RADAR SHOWS VERY HEAVY THUNDERSTORM RAINS CONTINUING NEAR MORAINE STATE
PARK IN WEST CENTRAL BUTLER COUNTY...ENOUGH TO CAUSE
FLASH FLOODING IN THIS AREA AND ALONG SOME OF THE CREEKS THAT FEED
INTO SLIPPERY ROCK CREEK IN NEARBY EASTERN LAWRENCE COUNTY.
 
BEWARE OF STILL HEAVY RUNOFF FROM EARLIER HEAVY THUNDERSTO0RM RAINS IN
THE ELLWOOD CITY AREA OF SOUTHERN LAWRENCE COUNTY.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT.  IT IS
IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR
CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS.  C

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 24, 6:44 PM EDTSevere Thunderstorm WarningPBZAllegheny, Beaver, Washington46 min
Jun 24, 7:49 PM EDTSevere Thunderstorm WarningPBZAllegheny71 min

Nearby

Flash Flood Warnings in Pennsylvania, 1995Every flash flood warning in 1995

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.