Alert archive / Pennsylvania / Flash Flood Warnings in 1996

Flash Flood Warning 71, NWS Pittsburgh, PA

February 28, 1996Armstrong County, Indiana County, Jefferson County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Feb 28, 1996, 12:37 AM EST for Armstrong County, Indiana County, Jefferson County, Pennsylvania. It was in force for 3 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 28, 1996, 12:37 AM EST (05:37 UTC)
Expired
Feb 28, 1996, 3:45 AM EST
In force
3 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

Counties Armstrong County, PA, Indiana County, PA, Jefferson County, PA

The radar

The Pittsburgh radar (KPBZ), 95 km from the middle of the area, began a volume at 05:37 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, 5.6 hours before the alert went out and 92 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 1996-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 226 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 1996-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.1939587897117136Sfc1 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
226 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
863 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

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
Feb 27, 10:42 PM ESTFlash Flood WarningPBZFayette, Greene3 hr
Feb 28, 12:09 AM ESTFlash Flood WarningPBZAllegheny, Beaver, Washington3 hr
Feb 28, 12:26 AM ESTFlash Flood WarningPBZButler, Westmoreland3 hr
Feb 28, 12:37 AM ESTFlash Flood WarningPBZClarion3 hr
Feb 27, 11:45 PM ESTFlash Flood WarningPBZCarroll, Jefferson3 hr
Feb 27, 11:45 PM ESTFlash Flood WarningPBZBelmont3 hr
Feb 28, 12:26 AM ESTFlash Flood WarningPBZHancock3 hr
Feb 28, 12:26 AM ESTFlash Flood WarningPBZMarshall, Ohio3 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1996Every flash flood warning in 1996

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.