Alert archive / New Jersey / Flash Flood Warnings in 1987

Flash Flood Warning 2, NWS New York, NY

July 14, 1987Essex County, Morris County, New Jersey

NWS New York, NY issued this flash flood warning at Jul 14, 1987, 2:45 PM EDT for Essex County, Morris County, New Jersey. It was in force for 75 min.

The area

The counties it named.

The facts

Issued
Jul 14, 1987, 2:45 PM EDT (18:45 UTC)
Expired
Jul 14, 1987, 4:00 PM EDT
In force
75 min
Issued by
NWS New York, NY
Area
Whole counties

Counties Essex County, NJ, Morris County, NJ

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 6.8 hours before the alert went out and 153 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 12:00Z on 1987-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 449 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 12:00Z on 1987-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 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
449 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
887 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
12 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 KEWR 141854 COR
FFWEWR
NJC013-027-142000-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE NEWARK NJ
245 PM EDT TUE JUL 14 1987...CORRECTION FOR ENDING TIME

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLOOD WARNING EFFECTIVE
UNTIL 400 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF

NORTHEAST NEW JERSEY...EASTERN MORRIS COUNTY...WESTERN ESSEX COUNTY.

A FLOOD WARNING IS IN EFFECT FOR EASTERN MORRIS COUNTY AND WESTERN
ESSEX COUNTY UNTIL 400 PM EDT. A COOPERATIVE WEATHER OBSERVER IN
ROSELAND NEW JERSEY HAS REPORTED 2 AND 1/2 INCHES OF RAIN IN ONLY ONE
HALF HOUR. SMALL STREAM AND CREEK FLOODING IS LIKELY WITH THIS AMOUNT
OF RAIN. URBAN FLOODING IS ALSO VERY LIKELY.

A FLOOD WARNING IMEANS FLOODING IS IMMINENT.

IF YOU GET ANY INDICATION THAT FLOOD WATERS ARE APPROACHING...MOVE TO
HIGHER GROUND IMMEDIATEDLY. DO NOT TRY TO DRIVE THROUGH FLOODED AREAS
AND FOLLOW THE DIRECTION OF EMERGENCY MANAGEMENT PERSONNEL.

WOODWORTH

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.

In the hours before

Special weather statement, Jul 14, 10:30 AM EDT, 4 hours 15 minutes before
SPECIAL WEATHER STATEMENT AND WEATHER MAP DISCUSSION
EXTREME SOUTHEAST NEW YORK..NORTHERN NEW JERSEY AND LONG ISLAND
NATIONAL WEATHER SERVICE NEW YORK NY
1000 AM EDT TUE JUL 14 1987

A STRONG COLD FRONT LOCATED TO THE WEST OF THE APPALACHIAN MOUNTAINS
WILL MOVE EASTWARD TO THE COAST TONIGHT. AFTER FRONTAL PASSAGE COOLER
AND DRIER CANADIAN AIR WILL USHER INTO OUR REGION ON NORTHWESTERLY
WINDS.

HOWEVER..BEFORE THIS HAPPENS WE WILL HAVE TO ENDURE YET ANOTHER DAY OF
UNCOMFORTABLE HUMIDITY ALONG WITH THE LIKELY THREAT OF VERY HEAVY
THUNDERSTORMS. THESE THUNDERSTORMS WILL DEVELOP IN THE MUGGY AND
UNSTABLE TROPICAL AIRMASS OVER OUR REGION AND ESPECIALLY IN THE
FRONTAL ZONE WHERE THIS AIR CLASHES WITH THE COOLER CANADIAN AIRMASS.
SOME OF THESE THUNDERSTORMS WILL PRODUCE VERY HEAVY RAINS..GUSTY
WINDS..POSSIBLE HAIL..AND DANGEROUS CLOUD TO GROUND LIGHTNING.

THE THREAT SHOULD END SHORTLY AFTER FRONTAL PASSAGE WHICH IS CURRENTLY
FORECAST TOe OCCUR AROUND MIDNIGHT FOR THE NEW YORK CITY METROPOLITAN
AREA. THE COOLER AND DRIER AIRMASS WILL THEN COVER OUR REGION FOR THE
REMAINDER OF THE WEEK GRADUALLY BECOMING WARMER FOR THE WEEKEND.

RS
Special weather statement, Jul 14, 12:57 PM EDT, 1 hour 48 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW YORK CITY NY
1230 PM EDT TUE JUL 14 1987

...DO NOT USE AFTER 2 PM EDT...
A SEVERE THUNDERSTORM WATCH IS IN EFFECT OVER MUCH OF INLAND CENTRAL AND
EASTERN NEW YORK AS WELL AS PART OF VERMONT UNTIL 9 PM EDT.
WEATHER RADAR IN NEW YORK CITY SHOWED NUMEROUS THUNDERSTORMS FROM
THE SOUTHERN ADIRONDACKS SOUTH THRU EAST AND CENTRAL PENNSYLVANIA TO
MARYLAND AND NORTHERN DELAWARE. THERE WERE ISOLATED SHOWERS AND THUNDER
STORMS IN CENTRAL AND NORTHERN NEW JERSEY AND AS FAR EAST AS THE WATERS
SOUTH OF MONTAUK AND PARTS OF CONNECTICUT MASSACHUSETTS AND VERMONT.
SOME OF THE THUNDERSTORMS WERE VERY HEAVY...WITH THE STRONGEST ONES
IN THE CATSKILLS EAST OF DELHI...IN THE POCONOS SOUTH OF TOBYHANNA...
AND SOUTHWEST OF POTTSVILLE.
MOVEMENT IS TOWARDS THE NORTHEAST ABOUT 25 MILES AN HOUR.
SOME OF THE THUNDERSTORMS MAY BE ACCOMPANIED BY STRONG GUSTY WINDS...
DANGEROUS LIGHTNING...HAIL...AND TORRENTIAL DOWNPOURS WITH LOCAL
FLOODING OF POORLY DRAINED AREAS.
END/TCM
Special weather statement, Jul 14, 1:53 PM EDT, 52 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW YORK CITY NY
130 PM EDT TUE JUL 14 1987

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM EDT FOR PORTIONS
EASTERN PENNSYLVANIA...EAST AND SOUTHEAST NEW YORK...ALL OF
NEW JERSEY...NEW YORK CITY AND LONG ISLAND...

WEATHER RADAR IN NEW YORK CITY SHOWED NUMEROUS THUNDERSTORMS FROM THE
ADIRONDACKS AND CENTRAL NEW YORK STATE SOUTH THROUGH NORTHWEST JERSEY
AND EASTERN PENNSYLVANIA TO MARYLAND AND DELAWARE. THERE WERE ISOLATED
SHOWERS AND THUNDERSTORMS ELSEWHERE IN NEW JERSEY AND IN CONNECTICUT AS
WELL AS OUT OVER THE OCEAN FOR OVER 100 MILES.

THE HEAVIEST THUNDERSTORMS WERE NOTED FROM EAST OF SCRANTON ACROSS THE
POCONOS TO HUNTERDON COUNTY IN NEW JERSEY.

MOVEMENT WAS NORTHEAST ABOUT 25 MILES AN HOUR.

THUNDERSTORMS MAY BE ACCOMPANIED BY STRONG POSSIBLY DAMAGING WINDS...
LARGE HAIL...AND TORRENTIAL DOWNPOURS WITH LOCAL FLOODING IN POORLY
DRAINED AREAS.

LIGHTNING DETECTION EQUIPMENT INDICATES FREQUENT CLOUD TO GROUND
LIGHTNING IS OCCURING WITH THESE STORMS. IF CAUGHT OUTSIDE...DO NOT
STAND UNDERNEATH A NATURAL LIGHTNING ROD SUCH AS A TALL ISOLATED TREE
OR TELEPHONE POLE. SEEK SHELTER INDOORS.

IF CAUGHT IN A TORRIENTIAL DOWNPOUR...DO NOT ATTEMPT TO DRIVE...PULL
OFF TO THE SIDE OF THE ROAD AND WAIT FOR THE STORM TO PASS.

TCM
Special weather statement, Jul 14, 2:22 PM EDT, 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW YORK NY
215 PM EDT TUE JUL 14 1987

...STRONG THUNDERSTORMS MOVING INTO HUNTERDON...WARREN...SUSSEX...
MORRIS...SOMERSET COUNTIES IN NEW JERSEY...

AT 215 PM NATIONAL WEATHER SERVICE RADAR INDICATED VERY STRONG
THUNDERSTORMS MOVING INTO HUNTERDON...WARREN AND SUSSEX COUNTIES OF
NEW JERSEY.  STORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR.

DURING THE NEXT HOUR THESE STORMS WILL MOVE INTO MORRIS AND
SUMERSET COUNTIES.  STRONG GUSTY WINDS AND POSSIBLE LARGE HAIL MAY
OCCUR WITH THESE STORMS ALONG WITH FREQUENT LIGHTNING.

LOCALLY HEAVY DOWNPOURS WILL LIKELY CAUSE STREET AND HIGHWAY FLOODING.

CC
Special weather statement, Jul 14, 2:41 PM EDT, 4 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE NEW YORK CITY NY
230 PM EDT TUE JUL 14 1987

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM EDT FOR PORTIONS
EASTERN PENNSYLVANIA...EAST AND SOUTHEAST NEW YORK...ALL OF
NEW JERSEY...NEW YORK CITY AND LONG ISLAND...

AN AREA OF VERY HEAVY THUNDERSTORMS WAS LOCATED ACROSS SOUTHEASTERN
NEW YORK MAINLY NORTH AND WEST OF THE POUGHKEEPSIE AREA...EASTERN
PENNSYLVANIA...NORTHERN..WESTERN..AND SOUTHERN NEW JERSEY...NORTHEASTERN
MARYLAND AND NORTHERN DELAWARE...

THE HEAVIEST THUNDERSTORMS WERE LOCATED OVER SUSSEX COUNTY OF NORTHWEST
NEW JERSEY..GLOUCESTER OF SOUTHWEST NEW JERSEY AS WELL AS OVER MONROE
AND NORTHHAMPTON OF EASTERN PENNSYLVANIA...

THESE THUNDERSTORMS MAY BE ACCOMPANIED BY STRONG POSSIBLY DAMAGING WINDS...
LARGE HAIL...AND TORRENTIAL DOWNPOURS WITH LOCAL FLOODING IN POORLY
DRAINED AREAS.

LIGHTNING DETECTION EQUIPMENT INDICATES FREQUENT CLOUD TO GROUND
LIGHTNING IS OCCURING WITH THESE STORMS. IF CAUGHT OUTSIDE...DO NOT
STAND UNDERNEATH A NATURAL LIGHTNING ROD SUCH AS A TALL ISOLATED TREE
OR TELEPHONE POLE. SEEK SHELTER INDOORS.

IF CAUGHT IN A TORRIENTIAL DOWNPOUR...DO NOT ATTEMPT TO DRIVE...PULL
OFF TO THE SIDE OF THE ROAD AND WAIT FOR THE STORM TO PASS.

END/STALKER

The office that day

Everything else NWS New York, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 14, 3:42 PM EDTSevere Thunderstorm WarningOKXEssex, Morris, Union48 min
Jul 14, 3:58 PM EDTSevere Thunderstorm WarningOKXMiddlesex, Somerset62 min
Jul 14, 4:05 PM EDTSevere Thunderstorm WarningOKXMonmouth55 min
Jul 14, 4:09 PM EDTSevere Thunderstorm WarningOKXBergen, Hudson, Passaic51 min
Jul 14, 4:15 PM EDTFlash Flood WarningOKXMiddlesex, Monmouth105 min

Nearby

Flash Flood Warnings in New Jersey, 1987Every flash flood warning in 1987

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.