Alert archive / Pennsylvania / Flash Flood Warnings in 1995

Flash Flood Warning 65, NWS State College, PA

August 2, 1995Adams County, Pennsylvania

NWS State College, PA issued this flash flood warning at Aug 2, 1995, 3:23 PM EDT for Adams County, Pennsylvania. It was in force for 97 min.

The area

The counties it named.

The facts

Issued
Aug 2, 1995, 3:23 PM EDT (19:23 UTC)
Expired
Aug 2, 1995, 5:00 PM EDT
In force
97 min
Issued by
NWS State College, PA
Area
Whole counties

County Adams County, PA

The radar

The Sterling radar (KLWX), 102 km from the middle of the area, began a volume at 19:23 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 7.4 hours before the alert went out and 106 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, Phillips Aaf/Abe, MD at 12:00Z on 1995-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 574 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 1995-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
574 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1187 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCTP 021928
FFWCTP
PAC001-055-022130-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
323 PM EDT WED AUG 2 1995
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  530 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...S...
 
IN  PENNSYLVANIA
 
   ...WESTERN ADAMS COUNTY...EASTERN FRANKLIN COUNTY
 
AT 320 PM...WEATHER SERVICE DOPPLER RADAR INDICATED A STATIONARY AREA OF
SHOWERS AND THUNDERSTORMS ALONG THE FRANKLIN/ADAMS COUNTY BORDER.
 
RADAR ESTIMATES OVER 3 INCHES OF RAIN HAS FALLEN OVER PARTS OF EASTERN
FRANKLIN AND WESTERN ADAMS COUNTIES.  THIS AMOUNT OF RAIN CAOULD CAUSE
FLOODING OF SMALL STREAMS AND POOR DRAINAGE AREAS.
 
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.  THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO
CROSS SAFELY.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
 
 
JUNG/
WINTHER

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.

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Aug 2, 9:25 AM EDT, 5 hours 58 minutes earlier.

Area forecast discussion, Aug 2, 9:25 AM EDT, 5 hours 58 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
925 AM EDT WED AUG 2 1995

LATEST SURFACE ANALYSIS SHOWS SLOW MOVING/STATIONARY FRONTAL
BOUNDARY REMAINS ACROSS THE NY/PA BORDER.  WEAK SHOWERS OVER
WESTERN PA DISSIPATED BEFORE THEY EVER MOVED INTO THE CTP ZONES.

TODAY LOOKS SIMILAR TO THE LAST FEW DAYS...WITH ANOTHER HOT ONE
ON TAP.  TODAY... HOWEVER... WE DO HAVE THE WEAK FRONTAL SYSTEM
TO POSSIBLY HELP TRIGGER/FOCUS SOME LIFT FOR CONVECTION.  FRONT
IS VERY SHALLOW THOUGH... WITH 850 TEMPS SHOWING NO REFLECTION OF
ANY COOLING.  ALTHOUGH TEMPS ALOFT PRETTY WARM...WE DID MANAGE TO
POP A FEW ISOLATED STORMS LATE TUE AFTERNOON.  MODIFIED SOUNDINGS
SHOW LI/S IN THE -6 RANGE THIS AFTERNOON (PIT)...AND WITH SFC
TEMPS SIMILAR TO YSTDY... CHC POPS ARE PROBABLY WARRANTED...WITH
THE GREATEST THREAT IN THE NORTH.

JUNG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 2:00 PM EDTFlash Flood WarningCTPCambria2 hr
Aug 2, 3:23 PM EDTFlash Flood WarningCTPFranklin2 hr
Aug 2, 4:51 PM EDTSevere Thunderstorm WarningCTPCentre, Clearfield69 min
Aug 2, 5:37 PM EDTSevere Thunderstorm WarningCTPClinton53 min
Aug 2, 6:48 PM EDTSevere Thunderstorm WarningCTPLycoming42 min
Aug 2, 6:54 PM EDTSevere Thunderstorm WarningCTPSchuylkill51 min
Aug 2, 7:38 PM EDTSevere Thunderstorm WarningCTPLycoming52 min

Nearby

Flash Flood Warnings in Pennsylvania, 1995Every flash flood warning in 1995

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.