Alert archive / Pennsylvania / Flash Flood Warnings in 1994

Flash Flood Warning 8, NWS Pittsburgh, PA

January 28, 1994Westmoreland County, Pennsylvania

NWS Pittsburgh, PA issued this flash flood warning at Jan 28, 1994, 12:15 PM EST for Westmoreland County, Pennsylvania. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Jan 28, 1994, 12:15 PM EST (17:15 UTC)
Expired
Jan 28, 1994, 10:00 PM EST
In force
10 hr
Issued by
NWS Pittsburgh, PA
Area
Whole counties

County Westmoreland County, PA

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 5.3 hours before the alert went out and 55 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 1994-01-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1994-01-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
492 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 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.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jan 28, 10:45 AM EST, 1 hour 30 minutes before
PAZ004>006-009>012-017>019-024>028-033>036-281700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1045 AM EST FRI JAN 28 1994

...WINTER STORM WARNING HAS EXPIRED...

THE WINTER STORM WARNING HAS EXPIRED FOR THE NORTHERN AND CENTRAL
MOUNTAINS OF PENNSYLVANIA. THE FREEZING RAIN HAS ENDED ACROSS THE REGION
AND TEMPERATURES HAVE WARMED TO ABOVE THE FREEZING MARK. STEADY RAINS
HAVE ENDED WITH ONLY OCCASIONAL SHOWERS FORECAST FOR THIS AFTERNOON.

ALTHOUGH THE FREEZING RAIN HAS ENDED ACROSS THE MOUNTAINS... MANY ROADS
REMAIN TREACHEROUS ACROSS MOST OF THESE AREAS...PARTICULARLY ON
SECONDARY ROADS AND BRIDGES WHERE ROAD CREWS HAVE NOT HAD A CHANCE TO
BEGIN THEIR WORK. IN ADDITION TO THE ICY ROADS... SIGNIFICANT PONDING OF
WATER ON ROADS WILL ADD YET ANOTHER HAZARD TO DRIVING TODAY.

HERE ARE A FEW OF THE PROBLEMS THAT HAVE OCCURED FROM THIS STORM...

JEFFERSON CLARION AND CLEARFIELD COUNTIES REPORT APPROXIMATELY 2000
CUSTOMERS WITHOUT POWER THIS MORNING BECAUSE OF DOWNED POWER LINES
CAUSED BY ICE.

HUNTINGDON COUNTY REPORTS 1000 CUSTOMERS WITHOUT POWER BECAUSE ICE HAS
DOWNED POWER LINES.

NUMEROUS SCHOOLS CLOSED OR SIGNIFICANTLY DELAYED ACROSS THE ENTIRE
WARNING AREA.

MANY AUTOMOBILE ACCIDENTS DUE TO ICY ROAD CONDITIONS.

REPORTS OF ONE HALF INCH /.50/ OF ICE ACCUMULATION IN BEDFORD COUNTY

SKY WARN OBSERVERS AND LOCAL EMERGENCY MANAGEMENT OFFICIALS...THANK YOU
VERY MUCH FOR YOUR HELP DURING THIS EVENT...PLEASE KEEP UP THE GREAT
JOB.
FLH/WJD/TR
Special weather statement, Jan 28, 10:49 AM EST, 1 hour 26 minutes before
PAZ004>006-009>012-017>019-024>028-033>036-281700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1045 AM EST FRI JAN 28 1994

...WINTER STORM WARNING HAS EXPIRED...

THE WINTER STORM WARNING HAS EXPIRED FOR THE NORTHERN AND CENTRAL
MOUNTAINS OF PENNSYLVANIA. THE FREEZING RAIN HAS ENDED ACROSS THE REGION
AND TEMPERATURES HAVE WARMED TO ABOVE THE FREEZING MARK. STEADY RAINS
HAVE ENDED WITH ONLY OCCASIONAL SHOWERS FORECAST FOR THIS AFTERNOON.

ALTHOUGH THE FREEZING RAIN HAS ENDED ACROSS THE MOUNTAINS... MANY ROADS
REMAIN TREACHEROUS ACROSS MOST OF THESE AREAS...PARTICULARLY ON
SECONDARY ROADS AND BRIDGES WHERE ROAD CREWS HAVE NOT HAD A CHANCE TO
BEGIN THEIR WORK. IN ADDITION TO THE ICY ROADS... SIGNIFICANT PONDING OF
WATER ON ROADS WILL ADD YET ANOTHER HAZARD TO DRIVING TODAY.

HERE ARE A FEW OF THE PROBLEMS THAT HAVE OCCURED FROM THIS STORM...

JEFFERSON CLARION AND CLEARFIELD COUNTIES REPORT APPROXIMATELY 2000
CUSTOMERS WITHOUT POWER THIS MORNING BECAUSE OF DOWNED POWER LINES
CAUSED BY ICE.

HUNTINGDON COUNTY REPORTS 1000 CUSTOMERS WITHOUT POWER BECAUSE ICE HAS
DOWNED POWER LINES.

NUMEROUS SCHOOLS CLOSED OR SIGNIFICANTLY DELAYED ACROSS THE ENTIRE
WARNING AREA.

MANY AUTOMOBILE ACCIDENTS DUE TO ICY ROAD CONDITIONS.

REPORTS OF ONE HALF INCH /.50/ OF ICE ACCUMULATION IN BEDFORD COUNTY

SKY WARN OBSERVERS AND LOCAL EMERGENCY MANAGEMENT OFFICIALS...THANK YOU
VERY MUCH FOR YOUR HELP DURING THIS EVBENT...PLEASE KEEP UP THE GREAT
JOB.
FLH/WJD/TR

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 28, 8:28 AM ESTFlash Flood WarningPBZGreene, Washington8 hr
Jan 28, 9:35 AM ESTFlash Flood WarningPBZBeaver6 hr
Jan 28, 3:32 PM ESTFlash Flood WarningPBZArmstrong6 hr
Jan 28, 4:51 PM ESTFlash Flood WarningPBZAllegheny5 hr
Jan 28, 5:20 PM ESTFlash Flood WarningPBZButler5 hr
Jan 28, 6:11 PM ESTFlash Flood WarningPBZClarion, Jefferson4 hr
Jan 27, 11:46 PM ESTFlash Flood WarningPBZMarshall, Ohio4 hr
Jan 28, 4:10 AM ESTFlash Flood WarningPBZBrooke, Hancock, Ohio8 hr
Jan 28, 4:10 AM ESTFlash Flood WarningPBZMarshall8 hr

Nearby

Flash Flood Warnings in Pennsylvania, 1994Every flash flood warning in 1994

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.