Alert archive / Pennsylvania / Flash Flood Warnings in 1996

Flash Flood Warning 104, NWS State College, PA

July 3, 1996Lycoming County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jul 3, 1996, 2:46 PM EDT for Lycoming County, Pennsylvania. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 3, 1996, 2:46 PM EDT (18:46 UTC)
Expired
Jul 3, 1996, 5:45 PM EDT
In force
3 hr
Issued by
NWS State College, PA
Area
Whole counties

County Lycoming County, PA

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 6.8 hours before the alert went out and 222 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 1996-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 joules per kilogram.LCLEL10008507005003002001001 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 1996-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
15 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
540 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
58 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 031847
FFWCTP
PAC081-032145-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
246 PM EDT WED JUL 3 1996
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  545 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN  PENNSYLVANIA
 
   ...SOUTHERN LYCOMING COUNTY
 
A LINE OF SLOW MOVING THUNDERSTORMS OVER SOUTHERN LYCOMING COUNTY HAS
PRODUCED UPTO 2 INCHES OF RAIN IN THE PAST HOUR. THESE STORMS ALSO
CONTAIN SMALL HAIL. RADAR ESTIMATED RAINFALL RATES NEAR WILLIAMSPORT ARE
AROUND 1.5 INCHES.
 
STREET AND SMALL STREAM FLOODING IS LIKELY IN AREAS AFFECTED BY THESE
STORMS THIS AFTERNOON....MAINLY IN SOUTHERN LYCOMING COUNTY AND IN THE
WILLIAMSPORT AREA.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
GRUMM

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 Jul 3, 9:58 AM EDT, 4 hours 48 minutes earlier.

Area forecast discussion, Jul 3, 9:58 AM EDT, 4 hours 48 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
945 AM EDT WED JUL 3 1996

...KCCX RADAR STILL DOWN...

SATELLITE IMAGERY SHOWS THICKEST CLOUDS MOVING OFF TO
EAST...REMNANTS OF THIS AMS TSTMS OVER CNTRL AND ERN PA.   BUT
LOTS OF LOW CLOUDS WAY BACK INTO OHIO...IT WILL BE AN MOSTLY
CLOUDY DAY OVER MOST OF REGION.  SFC CHART SHOWS COLD FRONT
WORKING ITS WAY ACROSS CNTRL PA.  ITS KIND OF A DIFFUSE FRONT
WITH DEW POINTS MAINLY IN THE 50S OVER WRN PA AND 60S OVER ERN PA
AHEAD OF THE FRONT.

LONG WAVE PATTERN SHOWS A TROF OVER THE EAST CENTERED OVER
PA...WITH A PV MAX IN IT.  VERY CYCLONIC ALOFT...COLD ALOFT WITH
HIGH SUN ANGLES...GOOD PATTERN TO BE CONCERNED ABOUT CLOUDS AND
PBSL SHWRS...ESPECIALLY AS DAY WEARS ON.  BEST CHC BE OVER
ELEVATED TERRAIN.   700/850 TEMPS SUPPORT 70S OVER WRN PA AND
ABOUT 82 IN SERN PA...BUT SELF DESTRUCT CUMULUS DUE TO CYCLONIC
CURVATURE AND SOLAR HEATING WILL CAUSE TEMPS TO STAY LWR THAN
THESE VALUES.

CLOUDS SHOULD MARKEDLY DECREASE OVERNIGHT WITH MOST LOCATIONS IN
THE 40S.  SEEMED TO LOSE ALL ETA DATA BLO 700 MB AT 36 H...OTHER
MODELS SHOW IT DRYING OUT AFT 06Z THURS.

THE 4TH WILL BE COOL WITH MORE CLOUDS THAN SUN.  UPPER LEVEL HTS
BEGIN TO SLOWLY RISE AS TROF SLOWLY LIFTS OUT.  NOT AS CYCLONIC
ALOFT BUT STILL COLD AT 850 MB.  TEMPS MAINLY UPR 60S NW TO MID
70S SE.  I WOULD NOT ELIMINATE THE IDEA OF A PASSING SHWR IN AFTN
OVER NRN MTS WITH COLD AIR ALOFT.  MODELS SHW GOOD SUBSIDENCE BUT
THERE IS SOME INSTABILITY IN SOUNDINGS AND XSECTS ACROSS PA THURS
AFTN SUGGESTING SOME LOCATIONS MIGHT SEE A SHWR.
GRUMM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 2:52 AM EDTSevere Thunderstorm WarningCTPCambria53 min
Jul 3, 3:45 AM EDTSevere Thunderstorm WarningCTPBlair60 min
Jul 3, 4:16 AM EDTSevere Thunderstorm WarningCTPHuntingdon59 min
Jul 3, 4:45 AM EDTSevere Thunderstorm WarningCTPCumberland, Franklin, Juniata, Perry60 min
Jul 3, 5:49 AM EDTSevere Thunderstorm WarningCTPYork56 min

Nearby

Flash Flood Warnings in Pennsylvania, 1996Every flash flood warning in 1996

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.