Alert archive / New Jersey / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 2, NWS New York, NY
NWS New York, NY issued this severe thunderstorm warning at Jul 14, 1987, 3:42 PM EDT for Essex County, Morris County, Union County, New Jersey. It was in force for 48 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 14, 1987, 3:42 PM EDT (19:42 UTC)
- Expired
- Jul 14, 1987, 4:30 PM EDT
- In force
- 48 min
- Issued by
- NWS New York, NY
- Area
- Whole counties
Counties Essex County, NJ, Morris County, NJ, Union County, NJ
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 14, 3:50 PM EDT | Tornado F0 | Union, NJ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 12:00Z, 7.7 hours before the alert went out and 147 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KNYC 141944 SVRNYC NJC013-039-027-142030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NEW YORK NY 342 PM EDT TUE JUL 14 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 430 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NEW JERSEY...ESSEX...UNION AND MORRIS AT 330 PM EDT NATIONAL WEATHER RADAR IN NEW YORK CITY DETECTED A SEVERE THUNDERSTORM OVER CENTRAL SOMERSET COUNTY NNEAR SOMERVILLE NEW JERSEY. IT WAS MOVING NORTHEAST AT 30 MPH AND WILL MOVE INTO MORRIS...UNION...AND ESSEX COUNTIES IN THE NEXT HOUR. ES/EY
What forecasters said that day
The local office's own words before this severe thunderstorm 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, 5 hours 12 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, 2 hours 45 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, 1 hour 49 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, 1 hour 20 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, 1 hour 1 minute 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 O FF TO THE SIDE OF THE ROAD AND WAIT FOR THE STORM TO PASS. END/STALKER
Special weather statement, Jul 14, 3:17 PM EDT, 25 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW YORK NY 315 PM EDT TUE JUL 14 1987 ...VERY HEAVY THUNDERSTORMS MOVING ACROSS WARREN...HUNTERDON... AND SOMERSET COUNTIES IN NEW JERSEY... ...FLOOD WARNING IN EFFECT FOR EASTERN MORRIS AND WESTERN ESSEX COUNTIES IN NEW JERSEY UNTIL 400PM EDT. AT 315 PM NATIONAL WEATHER SERVICE RADAR INDICATED VERY HEAVY THUNDERSTORMS MOVING THROUGH WARREN...HUNTERDON...AND SOMERSET COUNTIES OF NEW JERSEY. STORMS WERE MOVING NORTHEAST AT 25 MILES AN HOUR INTO SUSSEX...MORRIS...MIDDLESEX AND WESTERN MONMOUTH COUNTIES. STRONG GUSTY WINDS AND POSSIBLE LARGE HAIL MAY OCCUR WITH THESE STORMS ALONG WITH FREQUENT LIGHTNING. LOCALLY HEAVY DOWNPOURS WILL L<IKELY CAUSE CONSIDERABLE SMALL STREAM... STREET AND HIGHWAY FLOODING. AS MUCH AS 2 TO 3 INCHES OF RAINFALL WITHIN AN HOUR HAS BEEN REPORTED BY SPOTTERS. CC
The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 2:45 PM EDT | Flash Flood Warning | OKX | Essex, Morris | 75 min |
| Jul 14, 3:58 PM EDT | Severe Thunderstorm Warning | OKX | Middlesex, Somerset | 62 min |
| Jul 14, 4:05 PM EDT | Severe Thunderstorm Warning | OKX | Monmouth | 55 min |
| Jul 14, 4:09 PM EDT | Severe Thunderstorm Warning | OKX | Bergen, Hudson, Passaic | 51 min |
| Jul 14, 4:15 PM EDT | Flash Flood Warning | OKX | Middlesex, Monmouth | 105 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 1987Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.