Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 31, NWS Pittsburgh, PA

June 21, 1995Mercer County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jun 21, 1995, 4:36 PM EDT for Mercer County, Pennsylvania. It was in force for 114 min.

The area

The counties it named.

The facts

Issued
Jun 21, 1995, 4:36 PM EDT (20:36 UTC)
Expired
Jun 21, 1995, 6:30 PM EDT
In force
114 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Mercer County, PA

The radar

The Pittsburgh radar (KPBZ), 86 km from the middle of the area, began a volume at 20:40 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 12:00Z, 8.6 hours before the alert went out and 100 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 1995-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3253 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 1995-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 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
3253 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
696 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 12:54 AM EDTSevere Thunderstorm WarningPBZWashington66 min
Jun 21, 2:37 PM EDTSevere Thunderstorm WarningPBZWestmoreland68 min
Jun 21, 3:28 PM EDTSevere Thunderstorm WarningPBZIndiana, Westmoreland62 min
Jun 21, 3:38 PM EDTSevere Thunderstorm WarningPBZAllegheny, Armstrong, Jefferson67 min
Jun 21, 3:38 PM EDTSevere Thunderstorm WarningPBZMercer67 min
Jun 21, 3:38 PM EDTSevere Thunderstorm WarningPBZForest67 min
Jun 21, 4:12 PM EDTSevere Thunderstorm WarningPBZClarion63 min
Jun 21, 4:36 PM EDTSevere Thunderstorm WarningPBZMercer114 min
Jun 21, 4:40 PM EDTSevere Thunderstorm WarningPBZBeaver, Washington80 min
Jun 21, 4:40 PM EDTSevere Thunderstorm WarningPBZClarion, Jefferson80 min
Jun 21, 4:40 PM EDTSevere Thunderstorm WarningPBZAllegheny55 min
Jun 21, 4:50 PM EDTSevere Thunderstorm WarningPBZVenango70 min
Jun 21, 5:13 PM EDTSevere Thunderstorm WarningPBZArmstrong, Butler77 min
Jun 21, 5:33 PM EDTFlash Flood WarningPBZClarion, Venango57 min
Jun 21, 5:33 PM EDTSevere Thunderstorm WarningPBZClarion, Venango57 min
Jun 21, 6:04 PM EDTSevere Thunderstorm WarningPBZLawrence26 min
Jun 21, 6:30 PM EDTSevere Thunderstorm WarningPBZForest, Jefferson45 min
Jun 21, 7:31 PM EDTSevere Thunderstorm WarningPBZWashington44 min
Jun 21, 7:40 PM EDTSevere Thunderstorm WarningPBZArmstrong50 min
Jun 20, 11:50 PM EDTSevere Thunderstorm WarningPBZMuskingum40 min
Jun 21, 5:49 AM EDTFlash Flood WarningPBZGuernsey3 hr
Jun 21, 5:55 AM EDTFlash Flood WarningPBZGuernsey3 hr
Jun 21, 2:57 PM EDTSevere Thunderstorm WarningPBZTuscarawas63 min
Jun 21, 3:14 PM EDTFlash Flood WarningPBZTuscarawas2 hr
Jun 21, 3:38 PM EDTSevere Thunderstorm WarningPBZCarroll67 min
Jun 21, 3:50 PM EDTFlash Flood WarningPBZTuscarawas85 min
Jun 21, 3:50 PM EDTSevere Thunderstorm WarningPBZTuscarawas85 min
Jun 21, 4:57 PM EDTSevere Thunderstorm WarningPBZCoshocton63 min
Jun 21, 5:05 PM EDTFlash Flood WarningPBZTuscarawas115 min
Jun 21, 5:53 PM EDTSevere Thunderstorm WarningPBZColumbiana67 min
Jun 21, 6:34 PM EDTTornado WarningPBZColumbiana41 min
Jun 21, 6:52 PM EDTFlash Flood WarningPBZColumbiana3 hr
Jun 21, 6:55 PM EDTTornado WarningPBZCarroll35 min
Jun 21, 7:18 PM EDTSevere Thunderstorm WarningPBZTuscarawas57 min
Jun 21, 7:31 PM EDTSevere Thunderstorm WarningPBZCoshocton44 min
Jun 21, 5:29 PM EDTSevere Thunderstorm WarningPBZHancock31 min
Jun 21, 7:52 PM EDTSevere Thunderstorm WarningPBZWetzel38 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; radar from the NEXRAD Level II archive.