Alert archive / New Jersey / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

August 2, 2018Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 2, 2018, 10:05 PM EDT for Morris County, Somerset County, New Jersey. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 2, 2018, 10:05 PM EDT (02:05 UTC)
Expired
Aug 2, 2018, 11:00 PM EDT
In force
55 min
Issued by
NWS Philadelphia/Mount Holly

Counties Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 98 km from the middle of the area, began a volume at 02:06 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 2.1 hours before the alert went out and 132 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 00:00Z on 2018-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1316 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 00:00Z on 2018-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
1316 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
752 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted.

736 
WWUS81 KPHI 030205
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
1005 PM EDT THU AUG 2 2018

NJZ001-008>010-012-030300-
Morris-Hunterdon-Sussex-Somerset-Middlesex-
1005 PM EDT THU AUG 2 2018

...A STRONG THUNDERSTORM WILL AFFECT MORRIS...EAST CENTRAL
HUNTERDON...SOUTHEASTERN SUSSEX...NORTHERN SOMERSET AND NORTH CENTRAL
MIDDLESEX COUNTIES...

At 1004 PM EDT, a strong thunderstorm was located over Far Hills, or
near Somerville, moving northeast at 35 mph.

Winds up to 30 mph are possible with this storm.

Locations impacted include...
Morristown, Somerville, Somerset, Bridgewater, Dover, Madison,
Middlesex, Florham Park, East Hanover, Lincoln Park, Bound Brook,
Manville, Kinnelon, Chatham, Boonton, Butler, Wharton, Rockaway,
Morris Plains and Mount Arlington.

Heavy rainfall is also occurring with this storm, and may cause 
localized flooding. Do not drive your vehicle through flooded 
roadways.

LAT...LON 4091 7433 4083 7433 4076 7438 4075 7436
      4067 7446 4066 7445 4066 7440 4060 7446
      4060 7441 4051 7450 4061 7478 4111 7456
      4109 7450 4104 7450 4105 7445 4102 7443
      4100 7430 4090 7427
TIME...MOT...LOC 0204Z 205DEG 22KT 4065 7460 

$$

Kruzdlo

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 9:35 PM EDTSpecial Weather StatementPHISomerset25 min
Aug 3, 11:47 AM EDTSpecial Marine WarningPHI88 min
Aug 3, 12:17 PM EDTSpecial Weather StatementPHICape May43 min
Aug 3, 12:37 PM EDTSpecial Weather StatementPHICamden, Gloucester38 min
Aug 3, 12:52 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland21 min
Aug 3, 1:01 PM EDTSpecial Weather StatementPHIHunterdon44 min
Aug 3, 1:14 PM EDTSpecial Weather StatementPHIMercer46 min
Aug 3, 1:27 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Somerset48 min
Aug 3, 1:42 PM EDTSpecial Weather StatementPHIHunterdon, Morris, Sussex, Warren63 min
Aug 3, 2:00 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Somerset30 min
Aug 3, 2:37 PM EDTSpecial Weather StatementPHIMorris, Sussex38 min
Aug 3, 2:54 PM EDTSpecial Marine WarningPHI20 min
Aug 3, 3:33 PM EDTSpecial Weather StatementPHICamden, Gloucester, Salem57 min
Aug 3, 4:31 PM EDTSpecial Weather StatementPHISalem59 min
Aug 3, 4:45 PM EDTSpecial Weather StatementPHIWarren60 min
Aug 3, 5:25 PM EDTSpecial Weather StatementPHIMonmouth, Ocean50 min
Aug 3, 5:27 PM EDTSpecial Weather StatementPHIBurlington, Camden, Gloucester63 min
Aug 3, 6:52 PM EDTSpecial Weather StatementPHISussex, Warren113 min
Aug 3, 7:56 PM EDTAreal Flood AdvisoryPHISussex, Warren4 hr
Aug 3, 3:42 PM EDTSpecial Weather StatementPHILehigh, Northampton63 min
Aug 3, 5:45 PM EDTSpecial Weather StatementPHIDelaware, Montgomery, Philadelphia60 min
Aug 3, 7:37 PM EDTAreal Flood AdvisoryPHIBerks, Lehigh4 hr
Aug 3, 3:29 PM EDTSpecial Weather StatementPHISussex46 min

Nearby

Special Weather Statements in New Jersey, 2018Every special weather statement in 2018

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; radar from the NEXRAD Level II archive.