Alert archive / Pennsylvania / Flash Flood Warnings in 1986

Flash Flood Warning 6, NWS Cleveland, OH

July 19, 1986Warren County, Pennsylvania

NWS Cleveland, OH issued this flash flood warning at Jul 19, 1986, 1:12 AM EDT for Warren County, Pennsylvania. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued: Jul 19, 1986, 1:12 AM EDT (05:12 UTC)
Expired: Jul 19, 1986, 4:00 AM EDT
In force: 3 hr
Issued by: NWS Cleveland, OH
Area: Whole counties

County Warren 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 00:00Z, 5.2 hours before the alert went out and 133 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 698 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1256 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KERI 190512
FFWERI
PAC123-190800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ERIE PA
112 AM EDT SAT JUL 19 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING 
EFFECTIVE UNTIL 400 AM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

NORTHWEST PENNSYLVANIA...WARREN

SKYWARN REPORTS THAT THE PANAMA DAM ALONG THE LITTLE
BROKENSTRAW CREEK HAS BROKEN..ALL PERSONS DOWNSTREAM FROM
PANAMA TO LOTTSVILLE TO PI4TTSFIELD AND VICINITY SHOULD
MOVE TO HIGHER GROUND IMMEDIATELY..

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 18, 9:46 PM EDT	Flash Flood Warning	CLE	McKean	2 hr
Jul 18, 10:04 PM EDT	Severe Thunderstorm Warning	CLE	McKean, Warren	86 min
Jul 18, 11:44 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	76 min
Jul 19, 12:02 AM EDT	Severe Thunderstorm Warning	CLE	Warren	58 min

Nearby

Flash Flood Warnings in Pennsylvania, 1986 Every flash flood warning in 1986

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.