Alert archive / New Jersey / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

August 4, 2018Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 4, 2018, 3:55 AM EDT for Sussex County, New Jersey. It was in force for 65 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 4, 2018, 3:55 AM EDT (07:55 UTC)
Expired
Aug 4, 2018, 5:00 AM EDT
In force
65 min
Issued by
NWS Philadelphia/Mount Holly

County Sussex County, NJ

The radar

The Philadelphia radar (KDIX), 122 km from the middle of the area, began a volume at 07:57 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, 7.9 hours before the alert went out and 137 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 2018-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1302 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2018-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
1302 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
561 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
32 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

208 
WWUS81 KPHI 040755
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
355 AM EDT SAT AUG 4 2018

NJZ001-007-008-040900-
Morris-Sussex-Warren-
355 AM EDT SAT AUG 4 2018

...HEAVY DOWNPOURS WILL AFFECT NORTHERN MORRIS...CENTRAL SUSSEX AND 
NORTHEASTERN WARREN COUNTIES...

At 354 AM EDT, a shower was located over Hopatcong, or 7 miles south
of Newton, moving northeast at 20 mph.

Winds up to 40 mph are possible with this shower. With the already 
saturated ground, trees may be downed by these gusts even though 
they are well below severe limits.

Locations impacted include...
Newton, Dover, Hopatcong, Kinnelon, Hackettstown, Butler, Wharton,
Rockaway, Mount Arlington, Franklin, Stanhope, Riverdale, Hamburg,
Netcong, Ogdensburg, Sussex, Hope, Andover, Lake Mohawk and
Greendell.

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

LAT...LON 4120 7437 4110 7449 4104 7450 4105 7445
      4102 7443 4103 7442 4101 7436 4100 7430
      4099 7429 4098 7430 4077 7487 4091 7501
      4128 7453
TIME...MOT...LOC 0754Z 237DEG 18KT 4095 7470 

$$

CMS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 9:10 PM EDTAreal Flood AdvisoryPHISussex, Warren4 hr
Aug 3, 10:07 PM EDTSpecial Weather StatementPHIWarren53 min
Aug 3, 10:35 PM EDTSpecial Weather StatementPHIMorris, Sussex, Warren55 min
Aug 4, 2:53 AM EDTAreal Flood AdvisoryPHIWarren4 hr
Aug 4, 3:09 AM EDTSpecial Weather StatementPHIWarren51 min
Aug 4, 3:14 AM EDTAreal Flood AdvisoryPHISussex4 hr
Aug 4, 3:58 AM EDTAreal Flood WarningPHISussex, Warren33 hr
Aug 4, 5:12 AM EDTAreal Flood AdvisoryPHIMorris3 hr
Aug 4, 5:45 AM EDTAreal Flood AdvisoryPHIHunterdon7 hr
Aug 4, 5:56 AM EDTAreal Flood AdvisoryPHIMorris3 hr
Aug 4, 6:19 AM EDTFlash Flood WarningPHIMorris4 hr
Aug 4, 6:55 AM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Somerset4 hr
Aug 4, 8:19 AM EDTAreal Flood AdvisoryPHIMiddlesex, Somerset4 hr
Aug 4, 9:32 AM EDTFlash Flood WarningPHISomerset3 hr
Aug 4, 9:39 AM EDTSmall Craft AdvisoryPHI6 hr
Aug 4, 10:16 AM EDTAreal Flood WarningPHIMorris4 hr
Aug 4, 10:51 AM EDTAreal Flood WarningPHIHunterdon, Somerset4 hr
Aug 4, 12:13 PM EDTAreal Flood WarningPHIMiddlesex, Somerset2 hr
Aug 4, 4:41 PM EDTSevere Thunderstorm WarningPHIWarren34 min
Aug 4, 5:04 PM EDTSpecial Weather StatementPHIHunterdon56 min
Aug 3, 8:35 PM EDTAreal Flood AdvisoryPHICarbon4 hr
Aug 3, 9:03 PM EDTFlash Flood WarningPHIBerks8 hr
Aug 3, 10:23 PM EDTFlash Flood WarningPHILehigh, Northampton4 hr
Aug 3, 11:24 PM EDTAreal Flood AdvisoryPHIBerks, Lehigh6 hr
Aug 4, 12:24 AM EDTAreal Flood AdvisoryPHICarbon4 hr
Aug 4, 1:08 AM EDTAreal Flood AdvisoryPHIMonroe4 hr
Aug 4, 1:15 AM EDTSpecial Weather StatementPHIBerks30 min
Aug 4, 1:47 AM EDTSpecial Weather StatementPHIBerks, Lehigh43 min
Aug 4, 1:59 AM EDTAreal Flood AdvisoryPHIChester4 hr
Aug 4, 2:22 AM EDTAreal Flood WarningPHILehigh, Northampton21 hr
Aug 4, 2:27 AM EDTSpecial Weather StatementPHILehigh, Northampton63 min
Aug 4, 4:54 AM EDTAreal Flood WarningPHIBerks7 hr
Aug 4, 5:09 AM EDTAreal Flood AdvisoryPHIMonroe2 hr
Aug 4, 6:45 AM EDTRiver Flood WarningPHIChester4 hr
Aug 4, 8:48 AM EDTAreal Flood WarningPHIChester, Montgomery4 hr
Aug 4, 9:20 AM EDTRiver Flood WarningPHIMontgomery3 hr
Aug 4, 11:55 AM EDTRiver Flood WarningPHIChester, Montgomery, Philadelphia12 hr
Aug 3, 11:25 PM EDTSpecial Weather StatementPHITalbot50 min
Aug 4, 12:01 AM EDTSpecial Weather StatementPHIKent, Queen Anne's29 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.