Alert archive / New Jersey / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 110, NWS Philadelphia/Mount Holly

July 18, 2016Hunterdon County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 18, 2016, 3:25 PM EDT for Hunterdon County, New Jersey; Bucks County, Pennsylvania. It was in force for 50 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 18, 2016, 3:25 PM EDT (19:25 UTC)
Expired
Jul 18, 2016, 4:15 PM EDT
In force
50 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Hunterdon County, NJ, Bucks County, PA

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 19:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Jul 18, 3:53 PM EDTTSTM WND DMG1 Ne Darts Mills, NJLARGE TREE LIMBS DOWN IN PORTIONS OF READINGTON TOWNSHIP. TIME ESTIMATED FROM RADAR.
Jul 18, 4:00 PM EDTTSTM WND GST 45Pittstown, NJ

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 18, 12:05 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 18, 1:42 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.4 hours before the alert went out and 187 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 2016-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Brookhaven, NY at 12:00Z on 2016-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 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
1 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
1554 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
123 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted.

676 
WUUS51 KPHI 181925
SVRPHI
NJC019-PAC017-182015-
/O.NEW.KPHI.SV.W.0110.160718T1925Z-160718T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
325 PM EDT MON JUL 18 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HUNTERDON COUNTY IN NORTHWESTERN NEW JERSEY...
  CENTRAL BUCKS COUNTY IN SOUTHEASTERN PENNSYLVANIA...

* UNTIL 415 PM EDT

* AT 325 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PLEASANT
  VALLEY...OR 12 MILES SOUTHEAST OF ALLENTOWN...MOVING EAST AT 30
  MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  QUAKERTOWN...PERKASIE...DOYLESTOWN...BYRAM...BEDMINSTER...
  FLEMINGTON...CHALFONT...TINICUM...NEW HOPE...DUBLIN...FERNDALE...
  FRENCHTOWN...MILFORD...RIEGELSVILLE...STOCKTON...PLEASANT VALLEY...
  FRICKS...SAND BROOK...GARDENVILLE AND SERGEANTSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4038 7484 4038 7487 4035 7485 4034 7494
      4029 7487 4027 7519 4042 7542 4061 7520
      4059 7518 4062 7516 4056 7477
TIME...MOT...LOC 1925Z 281DEG 26KT 4050 7527 

HAIL...0.75IN
WIND...60MPH
 
$$

PO
2 follow-up statements
754 
WWUS51 KPHI 181943
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
343 PM EDT MON JUL 18 2016

NJC019-PAC017-182015-
/O.CON.KPHI.SV.W.0110.000000T0000Z-160718T2015Z/
HUNTERDON NJ-BUCKS PA-
343 PM EDT MON JUL 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHERN HUNTERDON AND CENTRAL BUCKS COUNTIES...

AT 343 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ERWINNA...OR
16 MILES SOUTHEAST OF EASTON...MOVING EAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
DOYLESTOWN...BYRAM...FLEMINGTON...NEW HOPE...FRENCHTOWN...MILFORD...
RIEGELSVILLE...STOCKTON...LUMBERVILLE...ERWINNA...SAND BROOK...
GARDENVILLE...SERGEANTSVILLE AND LAMBERTVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4038 7484 4038 7487 4035 7485 4034 7494
      4029 7487 4027 7516 4043 7508 4061 7520
      4059 7518 4062 7516 4056 7477
TIME...MOT...LOC 1943Z 285DEG 34KT 4050 7503 

HAIL...0.75IN
WIND...60MPH
 
$$

PO
338 
WWUS51 KPHI 181959
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
359 PM EDT MON JUL 18 2016

PAC017-182008-
/O.CAN.KPHI.SV.W.0110.000000T0000Z-160718T2015Z/
BUCKS PA-
359 PM EDT MON JUL 18 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BUCKS COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA...THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FOR
NORTHERN...CENTRAL AND NORTHWESTERN NEW JERSEY. A SEVERE THUNDERSTORM
WATCH ALSO REMAINS IN EFFECT UNTIL 800 PM EDT FOR SOUTHEASTERN
PENNSYLVANIA.

LAT...LON 4038 7484 4038 7487 4035 7486 4034 7493
      4040 7497 4040 7504 4042 7506 4045 7507
      4054 7507 4057 7511 4057 7517 4059 7519
      4062 7516 4056 7477
TIME...MOT...LOC 1958Z 281DEG 26KT 4048 7489 

$$

NJC019-182015-
/O.CON.KPHI.SV.W.0110.000000T0000Z-160718T2015Z/
HUNTERDON NJ-
359 PM EDT MON JUL 18 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR SOUTHERN HUNTERDON COUNTY...

AT 358 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER SAND
BROOK...OR
15 MILES SOUTHWEST OF SOMERVILLE...MOVING EAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
BYRAM...FLEMINGTON...FRENCHTOWN...MILFORD...STOCKTON...LUMBERVILLE...
SAND
BROOK...SERGEANTSVILLE AND LAMBERTVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4038 7484 4038 7487 4035 7486 4034 7493
      4040 7497 4040 7504 4042 7506 4045 7507
      4054 7507 4057 7511 4057 7517 4059 7519
      4062 7516 4056 7477
TIME...MOT...LOC 1958Z 281DEG 26KT 4048 7489 

HAIL...0.75IN
WIND...60MPH
 
$$

PO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 4:04 AM EDTSmall Craft AdvisoryPHI12 hr
Jul 18, 2:42 PM EDTSpecial Weather StatementPHISussex63 min
Jul 18, 2:51 PM EDTSevere Thunderstorm WarningPHIHunterdon39 min
Jul 18, 3:41 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester49 min
Jul 18, 4:04 PM EDTSpecial Weather StatementPHICamden, Gloucester, Salem56 min
Jul 18, 4:07 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Morris, Somerset38 min
Jul 18, 4:14 PM EDTSevere Thunderstorm WarningPHISalem46 min
Jul 18, 4:15 PM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Salem2 hr
Jul 18, 4:37 PM EDTSevere Thunderstorm WarningPHISalem38 min
Jul 18, 4:47 PM EDTSpecial Marine WarningPHI88 min
Jul 18, 4:47 PM EDTSpecial Weather StatementPHIBurlington, Camden43 min
Jul 18, 5:00 PM EDTSpecial Marine WarningPHI60 min
Jul 18, 5:07 PM EDTSpecial Marine WarningPHI83 min
Jul 18, 5:22 PM EDTSpecial Weather StatementPHICumberland, Salem53 min
Jul 18, 5:49 PM EDTSpecial Marine WarningPHI116 min
Jul 18, 5:51 PM EDTSevere Thunderstorm WarningPHIOcean24 min
Jul 18, 6:05 PM EDTSpecial Marine WarningPHI85 min
Jul 18, 6:23 PM EDTSpecial Marine WarningPHI97 min
Jul 18, 7:43 PM EDTSpecial Weather StatementPHISussex47 min
Jul 18, 12:58 PM EDTSpecial Weather StatementPHICarbon62 min
Jul 18, 1:48 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe57 min
Jul 18, 1:52 PM EDTSpecial Weather StatementPHIChester38 min
Jul 18, 2:28 PM EDTSevere Thunderstorm WarningPHICarbon, Lehigh, Northampton47 min
Jul 18, 3:17 PM EDTSpecial Weather StatementPHIDelaware, Montgomery, Philadelphia43 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2016Severe Thunderstorm Warnings in Pennsylvania, 2016Every severe thunderstorm warning in 2016

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.