Alert archive / New Jersey / Flash Flood Warnings in 1994

Flash Flood Warning 12, NWS Philadelphia/Mount Holly

August 22, 1994Mercer County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 22, 1994, 3:15 AM EDT for Mercer County, New Jersey. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Aug 22, 1994, 3:15 AM EDT (07:15 UTC)
Expired
Aug 22, 1994, 6:00 AM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Mercer County, NJ

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 00:00Z, 7.3 hours before the alert went out and 94 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, Atlantic City In, NJ at 00:00Z on 1994-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1396 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, Atlantic City In, NJ at 00:00Z on 1994-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
1396 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
713 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.5
Supercell composite
4.5

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 8:46 PM EDTSevere Thunderstorm WarningPHIGloucester44 min
Aug 21, 8:50 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland55 min
Aug 21, 10:07 PM EDTSevere Thunderstorm WarningPHIMercer33 min
Aug 22, 1:25 AM EDTFlash Flood WarningPHIMercer95 min
Aug 22, 4:37 PM EDTFlash Flood WarningPHIMercer3 hr
Aug 22, 5:06 PM EDTFlash Flood WarningPHICamden4 hr

Nearby

Flash Flood Warnings in New Jersey, 1994Every flash flood warning in 1994

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.