Alert archive / Delaware / Flash Flood Warnings in 1996

Flash Flood Warning 24, NWS Philadelphia/Mount Holly

April 16, 1996New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this flash flood warning at Apr 16, 1996, 7:03 AM EDT for New Castle County, Delaware. 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
Apr 16, 1996, 7:03 AM EDT (11:03 UTC)
Expired
Apr 16, 1996, 11:00 AM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County New Castle County, DE

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 11.1 hours before the alert went out and 167 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, Washington/Dulle, VA at 00:00Z on 1996-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 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, Washington/Dulle, VA at 00:00Z on 1996-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 601 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
442 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
601 m²/s²
0-3 km storm-relative helicity
944 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 KPHL 161106
FFWPHL
DEC003-161500-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
703 AM EDT TUE APR 16 1996
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 1100 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  DELAWARE
 
   ...NEW CASTLE COUNTY
 
THE RIVER GAGE AT CHOOCHS BRIDGE ON THE CHRISTINA RIVER HAS OVERFLOWED
ITS BANK AT 7AM. THE READING WAS 9.53 FEET. FLOOD STAGE IS 9 FEET.
THE RIVER SHOULD RISE FOR A FEW MORE HOURS.
 
 
DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS.  THE DEPTH OF THE
WATER MAY BE HIGHER THAN YOU THINK.  RAPIDLY RISING WATERS CAN
QUICKLY ENGULF YOUR VEHICLE AND ITS OCCUPANTS...WASHING THEM AWAY.
REMEMBER...MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.
 
 
WN

Nearby

Flash Flood Warnings in Delaware, 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.