Alert archive / Pennsylvania / Flash Flood Warnings in 1996

Flash Flood Warning 184, NWS State College, PA

October 8, 1996Lancaster County, Pennsylvania

NWS State College, PA issued this flash flood warning at Oct 8, 1996, 4:36 PM EDT for Lancaster County, Pennsylvania. It was in force for 4 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
Oct 8, 1996, 4:36 PM EDT (20:36 UTC)
Expired
Oct 8, 1996, 8:45 PM EDT
In force
4 hr
Issued by
NWS State College, PA
Area
Whole counties

County Lancaster County, PA

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.6 hours before the alert went out and 65 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 1996-10-08Temperature 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, Phillips Aaf/Abe, MD at 12:00Z on 1996-10-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 square meters per square second.1939587897Sfc1 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
832 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
105 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.

NWS State College, PA wrote its last area forecast discussion before this flash flood warning went out at Oct 8, 12:57 PM EDT, 3 hours 39 minutes earlier.

Area forecast discussion, Oct 8, 12:57 PM EDT, 3 hours 39 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1255 PM EDT TUE OCT 8 1996

...PHI...CAN SEE WHAT THINGS LOOK LIKE AT 2 PM...BEFORE DECIDING
ON WATCH...

CURRENT DATA AND NEW MODEL RUNS INDICATE STORM AND HEAVIEST RAIN
WILL TRACK FURTHER EAST THAN WE THOUGHT EARLIER...THUS DONT
EXPECT A LOT OF RAIN...UNLESS THINGS GET GOING SOON.

COMBINATION OF CLDS HAVE BEEN MAKING TAFS A LOT OF FUN.  MAY
BREAK OUT LATER THIS AFT.  SO FAR TEMPS HAVE NOT GONE UP MUCH
ACROSS C PA.

IN THE LONG TERM...ENERGY DROPPING INTO MEAN TROUGH POSITION WILL
KEEP COOL AND SOMEWHAT WET WX ACROSS REGION NEXT FEW DAYS.
AIRMASS IS FCST BY NGM TO BECOME A LITTLE UNSTABLE WED AFT...AS
WEAK LOW MOVES ACROSS...AND TEMPS ALOFT COOL...SO A FEW SHOWERS
WILL BE POSSIBLE.  A LARGE VARIATION IN CLDS WILL MAKE FOR A WIDE
RANGE IN THE TEMP DEPT.

MARTIN

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 8, 4:17 PM EDTFlash Flood WarningCTPDauphin, Lebanon, Schuylkill4 hr
Oct 8, 4:17 PM EDTFlash Flood WarningCTPYork4 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.