Alert archive / Pennsylvania / Flash Flood Warnings in 1996

Flash Flood Warning 229, NWS State College, PA

December 13, 1996Cumberland County, Dauphin County, Perry County, Pennsylvania

NWS State College, PA issued this flash flood warning at Dec 13, 1996, 11:56 AM EST for Cumberland County, Dauphin County, Perry County, Pennsylvania. It was in force for 6 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
Dec 13, 1996, 11:56 AM EST (16:56 UTC)
Expired
Dec 13, 1996, 6:00 PM EST
In force
6 hr
Issued by
NWS State College, PA
Area
Whole counties

Counties Cumberland County, PA, Dauphin County, PA, Perry County, PA

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.9 hours before the alert went out and 128 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 1996-12-13Temperature 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 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 1996-12-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
519 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
199 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 131659
FFWCTP
PAC001-041-043-099-133-132300-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1156 AM EST FRI DEC 13 1996
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
FLOOD WARNING FOR STREAMS AND CREEKS EFFECTIVE UNTIL 600 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  PENNSYLVANIA
 
   ...ADAMS COUNTY...CUMBERLAND COUNTY...DAUPHIN COUNTY
   ...PERRY COUNTY...YORK COUNTY
 
DOPPLER RADAR FROM STATE COLLEGE PA CONTINUES TO SHOW HEAVY RAIN ACROSS
A LARGE PART OF THE LOWER SUSQUEHANNA VALLEY REGION EARLY THIS
AFTERNOON. MOST OF THE HEAVY RAIN WAS CONCENTRATED IN YORK... ADAMS...
CUMBERLAND... DAUPHIN AND PERRY COUNTIES. HEAVY RAIN CONTINUES TO WORK
NORTHWARD INTO THE SUSQUEHANNA VALLEY REGION FROM EASTERN MARYLAND AND
EASTERN VIRGINIA. THE HEAVY RAIN IS EXPECTED TO CONTINUE UNTIL ABOUT THE
MIDDLE AFTERNOON HOURS AND LIKELY WILL CAUSE FLOODING OF SMALL STREAMS
AND CREEKS. ROADS AND POOR DRAINAGE AREAS SUSCEPTIBLE TO FLOODING WILL
BECOME FLOODED THIS AFTERNOON.
 
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.
 
NICOSIA

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 Dec 13, 10:03 AM EST, 1 hour 53 minutes earlier.

Area forecast discussion, Dec 13, 10:03 AM EST, 1 hour 53 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION...CORRECTION TO FFS
NATIONAL WEATHER SERVICE STATE COLLEGE PA
10 AM EST FRI DEC 13 1996

PIT...CORD TO UPDATE WATCH AREAS.
PHL...WRKZFP LOOK GOOD.

BAND OF LIGHT TO MODERATE PRECIP MOVING NORTH OVER CENTRAL PA ATTM.
THIS ACTIVITY IS AHEAD OF A SLOW MOVING OCCLUDED TYPE FRONT. WV
IMAGERY SHOWS SECOND SHRTWV OVER N CAROLINA ROUNDING BASE OF NEG
TILT TROF AND THIS WILL ENHANCE PRECIP ACROSS E PA LATER TODAY AND
TONIGHT.

NO FLOODING PROBLEMS SO FAR...RAIN HAS BEEN FALLING AT STEADY RATE
(ARND.10/HR) FOR THE PAST 12 HRS. HOWEVER...WITH SECOND WAVE
PROGGED TO MOVE INTO AREA...HRLY RATES SHLD DOUBLE ACROSS PORTIONS
OF E PA LATER THIS AFTN.

FLOOD WATCH TO CONTINUE E OF CENTRE COUNTY.

 ...LAKE SNOW OUTLOOK...
FRI NOON TO FRI 7PM...N...
FRI 7PM TO SAT 7AM...N...
SAT 7AM TO SAT 7PM...N...

WINTHER

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 13, 11:56 AM ESTFlash Flood WarningCTPAdams, York6 hr
Dec 13, 12:17 PM ESTFlash Flood WarningCTPJuniata, Northumberland, Snyder, Union6 hr
Dec 13, 12:17 PM ESTFlash Flood WarningCTPMontour6 hr
Dec 13, 12:39 PM ESTFlash Flood WarningCTPLycoming, Sullivan5 hr
Dec 13, 1:15 PM ESTFlash Flood WarningCTPHuntingdon6 hr
Dec 13, 2:23 PM ESTFlash Flood WarningCTPLancaster, Lebanon6 hr
Dec 13, 3:09 PM ESTFlash Flood WarningCTPColumbia, Schuylkill6 hr
Dec 13, 5:54 PM ESTFlash Flood WarningCTPCumberland, Dauphin, Northumberland, Perry, Snyder3 hr
Dec 13, 5:54 PM ESTFlash Flood WarningCTPLycoming, Union3 hr
Dec 13, 5:54 PM ESTFlash Flood WarningCTPAdams, York3 hr
Dec 13, 5:54 PM ESTFlash Flood WarningCTPSullivan3 hr
Dec 13, 5:54 PM ESTFlash Flood WarningCTPMontour3 hr

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.