Alert archive / Pennsylvania / Flash Flood Warnings in 1996

Flash Flood Warning 52, NWS State College, PA

June 12, 1996Franklin County, Pennsylvania

NWS State College, PA issued this flash flood warning at Jun 12, 1996, 10:50 AM EDT for Franklin County, Pennsylvania. It was in force for 5 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
Jun 12, 1996, 10:50 AM EDT (14:50 UTC)
Expired
Jun 12, 1996, 4:00 PM EDT
In force
5 hr
Issued by
NWS State College, PA
Area
Whole counties

County Franklin County, PA

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 2.8 hours before the alert went out and 148 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 1996-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 801 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, Phillips Aaf/Abe, MD at 12:00Z on 1996-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 square meters per square second.193958Sfc1 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
801 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCTP 121454 RRA
FFWCTP
PAC055-122000-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1050 AM EDT WED JUN 12 1996
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS EXTENDED THE FLOOD
WARNING FOR STREAMS AND CREEKS UNTIL 400 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS......
 
IN  PENNSYLVANIA
 
   ...FRANKLIN COUNTY
 
FRANKLIN COUNTY EMERGENCY MANAGEMENT PERSONNEL CONTINUE TO REPORT SEVERACLOSED ROADS IN FRANKLIN COUNTY DUE TO FLOOD WATERS.  MOST OF THE ROAD
CLOSURES ARE IN ST. THOMAS AND HAMILTON TOWNSHIPS...WHERE OVER 4 INCHES
OF RAIN FELL LATE LAST EVENING.
 
EVEN THOUGH THE HEAVY RAINFALL IS LONG OVER...STREAMS AND CREEKS CONTINUTO RUN HIGH.  EXPECT SOME FLOODING OF SMALL STREAMS AND CREEKS TO PERSISINTO THE AFTERNOON...WITH WATERS SLOWLY RECEEDING AS THE DAY PROGRESSES.
 
A FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT.  MOST F
ODEATHS OCCUR IN AUTOMOBILES.  DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...O
LSPOTS IF WATER COVERS THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM.
EA SMALL ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
JUNG
 
&

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 Jun 12, 9:16 AM EDT, 1 hour 34 minutes earlier.

Area forecast discussion, Jun 12, 9:16 AM EDT, 1 hour 34 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
900 AM EDT WED JUN 12 1996

WITH BASICALLY LITTLE CHANGE IN AIRMASS TODAY...EXPECT ANOTHER
ROUND OF AFTERNOON SHOWERS AND THUNDERSTORMS.  FORCING HAS BEEN
WEAK AS OF LATE...AND CONVECTION YESTERDAY WAS MAINLY DRIVEN BY
OROGRAPHICS AND WEAK BOUNDARIES.  TODAY...THERE SEEMS TO BE A
SHORTWAVE ROTATING AROUND THE UPPER LOW.  CURRENT SATELLITE
IMAGES SHOW THE DISTURBANCE MOVING OUT OF KY INTO SE OHIO ATTM.
WITH THIS FEATURE APPROACHING...LIKELY RW/TRW POPS SEEM
REASONABLE FOR MOST OF THE CWA AS PER CURRENT ZONES.

NO PCGRIDDS AVAILABLE THIS MORNING.  HOPEFULLY WILL GET A BETTER
HANDLE WITH ARRIVAL OF 12Z RUNS.

JU2NG

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 11, 8:38 PM EDTFlash Flood WarningCTPFranklin3 hr
Jun 11, 9:45 PM EDTSevere Thunderstorm WarningCTPFranklin60 min
Jun 11, 10:10 PM EDTSevere Thunderstorm WarningCTPAdams, Cumberland65 min
Jun 11, 11:40 PM EDTFlash Flood WarningCTPFranklin5 hr
Jun 12, 5:00 AM EDTFlash Flood WarningCTPFranklin6 hr
Jun 12, 1:56 PM EDTSevere Thunderstorm WarningCTPLancaster64 min
Jun 12, 4:13 PM EDTSevere Thunderstorm WarningCTPCumberland62 min
Jun 12, 4:28 PM EDTFlash Flood WarningCTPLancaster4 hr
Jun 12, 4:39 PM EDTSevere Thunderstorm WarningCTPLancaster66 min
Jun 12, 4:48 PM EDTFlash Flood WarningCTPCumberland3 hr
Jun 12, 5:21 PM EDTSevere Thunderstorm WarningCTPNorthumberland, Snyder69 min
Jun 12, 5:39 PM EDTFlash Flood WarningCTPJuniata, Mifflin66 min
Jun 12, 5:39 PM EDTSevere Thunderstorm WarningCTPJuniata, Mifflin66 min
Jun 12, 6:23 PM EDTSevere Thunderstorm WarningCTPPerry67 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.