Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 83, NWS Pittsburgh, PA

July 15, 1995Beaver County, Lawrence County, Pennsylvania; Columbiana County, Ohio

NWS Pittsburgh, PA issued this flash flood warning at Jul 15, 1995, 8:06 PM EDT for Beaver County, Lawrence County, Pennsylvania; Columbiana County, Ohio. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jul 15, 1995, 8:06 PM EDT (00:06 UTC)
Expired
Jul 15, 1995, 10:15 PM EDT
In force
2 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Columbiana County, OH, Beaver County, PA, Lawrence County, PA

The radar

The Pittsburgh radar (KPBZ), 39 km from the middle of the area, began a volume at 00:05 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 0.1 hours before the alert went out and 55 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 1995-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2889 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 1995-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 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
2889 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1586 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
-14 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 160009
FFWPIT
OHC029-PAC073-007-019-160215-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
806 PM EDT SAT JUL 15 1995
 
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL 1015 PM EDT
FOR THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL OHIO
 
   ...COLUMBIANA COUNTY
 
 
IN NORTHWEST PENNSYLVANIA
 
   ...LAWRENCE COUNTY
 
IN WEST PENNSYLVANIA
 
   ...BEAVER COUNTY...BUTLER COUNTY
 
WEATHER RADAR SHOWED THE EAST-WEST LINE OF SEVERE STORMS STILL MOVING
SLOWLY SOUTHEAST ACROSS COLUMBIANA COUNTY OHIO AND SOUTHERN LAWRENCE
COUNTY PENNSYLVANIA INTO BEAVER AND BUTLER COUNTIES.
 
BESIDES DAMAGING WIND AND LARGE HAIL...REPEATED HEAVY DOWNPOURS CAN
CAUSE FLASH FLOODING.
 
REPEATED TORRENTIAL DOWNPOURS HAVE BEEN REPORTED IN SALEM AND UNITY IN
NORTHERN COLUMBIANA COUNTY.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...DESTRUCTIVE HAIL...
DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR SAFETY GO TO AN INTERIOR
ROOM ON THE LOWEST FLOOR OF YOUR BUILDING. SEVERE THUNDERSTORMS CAN
PRODUCE TORNADOES WITH LITTLE ADVANCE WARNING. HEAVY RAINS CAN
QUICKLY CAUSE FLOODING. DO NOT CROSS WHERE WATER COVERS YOUR PATH.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 8:06 PM EDTFlash Flood WarningPBZButler2 hr
Jul 15, 8:06 PM EDTSevere Thunderstorm WarningPBZBeaver, Butler, Lawrence2 hr
Jul 15, 8:19 PM EDTFlash Flood WarningPBZAllegheny116 min
Jul 15, 8:19 PM EDTSevere Thunderstorm WarningPBZAllegheny116 min
Jul 15, 8:22 PM EDTSevere Thunderstorm WarningPBZAllegheny113 min
Jul 15, 8:30 PM EDTSevere Thunderstorm WarningPBZArmstrong, Clarion60 min
Jul 15, 8:59 PM EDTFlash Flood WarningPBZMercer2 hr
Jul 15, 8:59 PM EDTSevere Thunderstorm WarningPBZMercer2 hr
Jul 15, 9:07 PM EDTTornado WarningPBZButler, Venango53 min
Jul 15, 9:18 PM EDTSevere Thunderstorm WarningPBZIndiana42 min
Jul 15, 9:18 PM EDTSevere Thunderstorm WarningPBZWashington42 min
Jul 15, 9:28 PM EDTSevere Thunderstorm WarningPBZClarion, Forest62 min
Jul 15, 9:28 PM EDTSevere Thunderstorm WarningPBZArmstrong62 min
Jul 15, 9:50 PM EDTSevere Thunderstorm WarningPBZVenango40 min
Jul 15, 10:03 PM EDTSevere Thunderstorm WarningPBZIndiana, Westmoreland57 min
Jul 15, 10:10 PM EDTFlash Flood WarningPBZButler, Mercer2 hr
Jul 15, 10:20 PM EDTSevere Thunderstorm WarningPBZFayette, Greene, Washington55 min
Jul 15, 10:40 PM EDTFlash Flood WarningPBZVenango65 min
Jul 15, 10:40 PM EDTFlash Flood WarningPBZLawrence65 min
Jul 15, 10:55 PM EDTFlash Flood WarningPBZIndiana2 hr
Jul 15, 10:55 PM EDTFlash Flood WarningPBZFayette, Greene2 hr
Jul 15, 10:55 PM EDTSevere Thunderstorm WarningPBZFayette, Greene2 hr
Jul 15, 10:55 PM EDTSevere Thunderstorm WarningPBZIndiana2 hr
Jul 15, 8:13 PM EDTSevere Thunderstorm WarningPBZJefferson62 min
Jul 15, 8:41 PM EDTSevere Thunderstorm WarningPBZCarroll, Harrison49 min
Jul 15, 8:49 PM EDTSevere Thunderstorm WarningPBZMonroe41 min
Jul 15, 10:03 PM EDTSevere Thunderstorm WarningPBZBelmont57 min

Nearby

Flash Flood Warnings in Pennsylvania, 1995Flash Flood Warnings in Ohio, 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; radar from the NEXRAD Level II archive.