Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

October 25, 2021Middlesex County, Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 25, 2021, 9:09 PM EDT for Middlesex County, Morris County, Somerset County, New Jersey. It was in force for 51 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
Oct 25, 2021, 9:09 PM EDT (01:09 UTC)
Expired
Oct 25, 2021, 10:00 PM EDT
In force
51 min
Issued by
NWS Philadelphia/Mount Holly
Hail
0.25 in
Wind
40

Counties Middlesex County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 89 km from the middle of the area, began a volume at 01:11 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, 1.2 hours before the alert went out and 141 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 2021-10-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 544 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 2021-10-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.1939587897Sfc1 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
544 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
758 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted.

345 
WWUS81 KPHI 260109
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
909 PM EDT Mon Oct 25 2021
 
NJZ008-010-012-013-015-260200-
Morris NJ-Western Monmouth NJ-Somerset NJ-Middlesex NJ-Mercer NJ-
909 PM EDT Mon Oct 25 2021

...Strong thunderstorms will impact portions of Morris, east central
Mercer, Somerset and Middlesex Counties through 1000 PM EDT...

At 908 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Far Hills to Cranbury. Movement was north
at 50 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
New Brunswick, Morristown, Somerville, Somerset, Edison, East
Brunswick, Bridgewater, South Brunswick, North Brunswick, Dover,
Madison, Hopatcong, Middlesex, Florham Park, East Hanover, Bound
Brook, Manville, Chatham, Boonton and Wharton.

This includes the following highways...
 New Jersey Turnpike between exits 8A and 12.
 Interstate 78 in New Jersey between mile markers 27 and 42.
 Interstate 80 in New Jersey between mile markers 27 and 48.
 Interstate 195 in New Jersey near mile marker 12.
 Interstate 287 in New Jersey between mile markers 0 and 47.
 Garden State Parkway between mile markers 130 and 133.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4017 7451 4064 7473 4071 7472 4074 7477
      4082 7481 4090 7471 4092 7465 4096 7464
      4108 7449 4104 7450 4105 7445 4086 7432
      4079 7437 4074 7437 4067 7446 4065 7440
      4060 7446 4059 7427
TIME...MOT...LOC 0108Z 198DEG 41KT 4066 7458 4029 7451 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

JEO

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 25, 8:26 PM EDTSpecial Weather StatementPHIMercer34 min
Oct 25, 8:33 PM EDTSpecial Weather StatementPHIWarren42 min
Oct 26, 1:22 AM EDTAreal Flood WarningPHIAtlantic, Burlington, Cape May, Cumberland, Ocean5 hr
Oct 26, 2:08 AM EDTFlash Flood WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean4 hr
Oct 26, 3:08 AM EDTFlash Flood WarningPHIMiddlesex, Monmouth, Ocean8 hr
Oct 26, 4:14 AM EDTFlash Flood WarningPHIHunterdon, Middlesex, Morris, Somerset4 hr
Oct 26, 5:22 AM EDTAreal Flood AdvisoryPHIMorris, Sussex, Warren2 hr
Oct 26, 6:09 AM EDTAreal Flood WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean3 hr
Oct 26, 6:18 AM EDTAreal Flood WarningPHIHunterdon, Mercer, Middlesex, Somerset13 hr
Oct 26, 7:15 AM EDTAreal Flood WarningPHIMonmouth, Ocean5 hr
Oct 26, 7:32 AM EDTRiver Flood WarningPHISomerset28 hr
Oct 26, 7:38 AM EDTAreal Flood WarningPHIHunterdon, Morris, Somerset, Sussex, Warren37 hr
Oct 26, 8:07 AM EDTAreal Flood WarningPHIHunterdon, Middlesex, Morris, Somerset12 hr
Oct 26, 8:18 AM EDTRiver Flood WarningPHIMorris, Somerset8 hr
Oct 26, 10:12 AM EDTRiver Flood WarningPHISomerset11 hr
Oct 26, 10:12 AM EDTRiver Flood WarningPHIMiddlesex, Somerset24 hr
Oct 26, 10:12 AM EDTRiver Flood WarningPHIMiddlesex, Somerset33 hr
Oct 26, 10:50 AM EDTAreal Flood WarningPHIMiddlesex, Monmouth, Ocean9 hr
Oct 26, 4:24 PM EDTRiver Flood WarningPHIMorris31 hr
Oct 26, 4:28 PM EDTRiver Flood WarningPHIMorris, Passaic29 hr
Oct 26, 4:39 PM EDTRiver Flood WarningPHIEssex, Morris, Passaic54 hr
Oct 26, 4:39 PM EDTRiver Flood WarningPHIEssex, Passaic42 hr
Oct 26, 12:31 AM EDTAreal Flood WarningPHIBerks, Chester, Delaware, Montgomery5 hr
Oct 26, 10:27 AM EDTAreal Flood AdvisoryPHIMonroe, Northampton4 hr
Oct 26, 12:20 PM EDTAreal Flood WarningPHICarbon, Monroe, Northampton7 hr
Oct 26, 1:53 AM EDTAreal Flood AdvisoryPHISussex3 hr
Oct 25, 11:51 PM EDTAreal Flood WarningPHICaroline, Kent, Queen Anne's, Talbot6 hr

Nearby

Special Weather Statements in New Jersey, 2021Every special weather statement in 2021

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.