Alert archive / Pennsylvania / Flash Flood Warnings in 2000

Flash Flood Warning 55, NWS Philadelphia/Mount Holly

December 17, 2000Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at Dec 17, 2000, 9:52 AM EST for Carbon County, Monroe 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 outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Dec 17, 2000, 9:52 AM EST (14:52 UTC)
Expired
Dec 17, 2000, 1:00 PM EST
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Carbon County, PA, Monroe County, PA

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 2.9 hours before the alert went out and 216 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, Brookhaven, NY at 12:00Z on 2000-12-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 313 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2000-12-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 582 square meters per square second.1939587897117136Sfc1 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
313 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
453 m above ground
0-6 km bulk shear
92 kt
0-1 km storm-relative helicity
582 m²/s²
0-3 km storm-relative helicity
603 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.1

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KPHI 171458
FFWPHL
PAC025-089-171545-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...RETRANSMISSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
952 AM EST SUN DEC 17 2000

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CARBON COUNTY IN NORTHEAST PENNSYLVANIA
  MONROE COUNTY IN NORTHEAST PENNSYLVANIA

* UNTIL 1 PM EST.

* AT 946 AM EST...EMERGENCY MANAGMENT OFFICIALS REPORTED 3.67 INCHES 
OF RAIN AND BASEMENTS FLOODED AND ROADS CLOSED NEAR JIM THORPE.


FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.

LAT...LON 4123 7522 4085 7522 4085 7572 4123 7573

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 17, 6:06 AM ESTFlash Flood WarningPHIChester114 min
Dec 17, 6:13 AM ESTSevere Thunderstorm WarningPHIChester32 min
Dec 17, 6:50 AM ESTFlash Flood WarningPHIBucks, Montgomery3 hr
Dec 17, 7:03 AM ESTFlash Flood WarningPHIChester3 hr
Dec 17, 7:29 AM ESTFlash Flood WarningPHIDelaware3 hr
Dec 17, 9:33 AM ESTFlash Flood WarningPHIChester117 min
Dec 17, 10:00 AM ESTFlash Flood WarningPHIChester3 hr
Dec 17, 10:00 AM ESTFlash Flood WarningPHIDelaware3 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2000Every flash flood warning in 2000

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.