Alert archive / Pennsylvania / Flash Flood Warnings in 1990

Flash Flood Warning 13, NWS Cleveland, OH

June 18, 1990Potter County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Jun 18, 1990, 11:14 AM EDT for Potter County, Pennsylvania. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1990, 11:14 AM EDT (15:14 UTC)
Expired
Jun 18, 1990, 12:15 PM EDT
In force
61 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Potter County, PA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 3.2 hours before the alert went out and 147 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, Buffalo Intl Airport, NY at 12:00Z on 1990-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2093 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, Buffalo Intl Airport, NY at 12:00Z on 1990-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 square meters per square second.1939587897Sfc1 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
2093 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
690 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
153 m²/s²
Significant tornado parameter
1.3
Supercell composite
7.6

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 Cleveland, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 18, 5:54 AM EDTSevere Thunderstorm WarningCLEErie66 min
Jun 18, 6:53 AM EDTSevere Thunderstorm WarningCLEErie82 min
Jun 18, 9:08 AM EDTSevere Thunderstorm WarningCLEMcKean67 min
Jun 18, 10:36 AM EDTFlash Flood WarningCLEElk, McKean3 hr
Jun 18, 11:14 AM EDTSevere Thunderstorm WarningCLEPotter61 min

Nearby

Flash Flood Warnings in Pennsylvania, 1990Every flash flood warning in 1990

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.