Alert archive / Pennsylvania / Flash Flood Warnings in 1993

Flash Flood Warning 30, NWS Pittsburgh, PA

August 17, 1993Greene County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Aug 17, 1993, 5:27 PM EDT for Greene County, Pennsylvania. It was in force for 93 min.

The area

The counties it named.

The facts

Issued
Aug 17, 1993, 5:27 PM EDT (21:27 UTC)
Expired
Aug 17, 1993, 7:00 PM EDT
In force
93 min
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Greene County, PA

The nearest sounding before it

Huntington/Tri S, WV (KHTS), launched 12:00Z, 9.5 hours before the alert went out and 257 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, Huntington/Tri S, WV at 12:00Z on 1993-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 560 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, Huntington/Tri S, WV at 12:00Z on 1993-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 42 square meters per square second.193958Sfc1 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
560 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
825 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
42 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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
Aug 16, 10:48 PM EDTFlash Flood WarningPBZArmstrong2 hr
Aug 16, 11:22 PM EDTFlash Flood WarningPBZAllegheny98 min
Aug 17, 12:50 AM EDTFlash Flood WarningPBZWashington115 min
Aug 17, 12:50 AM EDTFlash Flood WarningPBZAllegheny115 min
Aug 17, 4:27 PM EDTSevere Thunderstorm WarningPBZBlair63 min
Aug 17, 4:27 PM EDTSevere Thunderstorm WarningPBZFayette, Westmoreland63 min
Aug 17, 4:27 PM EDTSevere Thunderstorm WarningPBZGreene63 min
Aug 17, 4:41 PM EDTFlash Flood WarningPBZClearfield109 min
Aug 17, 5:27 PM EDTFlash Flood WarningPBZFayette, Somerset, Westmoreland93 min
Aug 17, 5:27 PM EDTSevere Thunderstorm WarningPBZFayette, Somerset, Westmoreland93 min
Aug 17, 5:27 PM EDTSevere Thunderstorm WarningPBZGreene93 min
Aug 17, 6:57 PM EDTFlash Flood WarningPBZFayette, Somerset, Westmoreland63 min
Aug 17, 6:57 PM EDTSevere Thunderstorm WarningPBZFayette, Somerset, Westmoreland63 min
Aug 17, 12:50 AM EDTFlash Flood WarningPBZOhio115 min

Nearby

Flash Flood Warnings in Pennsylvania, 1993Every flash flood warning in 1993

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.