Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

May 8, 2021Hunterdon County, Middlesex County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at May 8, 2021, 4:21 PM EDT for Hunterdon County, Middlesex County, Somerset County, New Jersey. It was in force for 24 min. 1 report 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
May 8, 2021, 4:21 PM EDT (20:21 UTC)
Expired
May 8, 2021, 4:45 PM EDT
In force
24 min
Issued by
NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Middlesex County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 70 km from the middle of the area, began a volume at 20:23 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
May 8, 4:45 PM EDTHAIL 0.251 Sw Helmetta, NJSOCIAL MEDIA.

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

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.4 hours before the alert went out and 127 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 2021-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2021-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.1939Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1728 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

780 
WWUS81 KPHI 082021
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
421 PM EDT Sat May 8 2021

NJZ008>010-012>014-082045-
Hunterdon-Morris-Eastern Monmouth-Western
Monmouth-Somerset-Middlesex-
421 PM EDT Sat May 8 2021

...A LINE OF SHOWERS WILL AFFECT EASTERN HUNTERDON...SOUTHERN
MORRIS...SOMERSET...NORTHEASTERN MONMOUTH AND MIDDLESEX COUNTIES...

At 421 PM EDT, radar indicated showers were located along a line
extending from Carteret to near North Brunswick Township to near
Clinton. Movement was southeast at 20 mph.

Accumulating pea size hail and a brief funnel cloud are possible 
with these showers.

Locations impacted include...
New Brunswick, Perth Amboy, Morristown, Somerville, Sandy Hook,
Somerset, Edison, Middletown, Old Bridge, East Brunswick,
Bridgewater, South Brunswick, Sayreville, North Brunswick, Marlboro,
Carteret, Holmdel, Madison, Middlesex and Red Bank.

This includes the following highways...
 New Jersey Turnpike between exits 9 and 13.
 Interstate 78 in New Jersey between mile markers 10 and 42.
 Interstate 80 in New Jersey between mile markers 44 and 47.
 Interstate 287 in New Jersey between mile markers 0 and 42.
 Garden State Parkway between mile markers 111 and 134.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4040 7397 4025 7430 4045 7485 4067 7505
      4084 7465 4087 7436 4084 7433 4076 7437
      4075 7436 4067 7446 4065 7440 4060 7446
      4060 7421 4056 7421 4050 7428 4047 7427
      4044 7420 4041 7398 4048 7402 4048 7401
TIME...MOT...LOC 2021Z 319DEG 16KT 4060 7423 4046 7454 4059 7492 

$$

SFJ

The office that day

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

IssuedProductOfficeCountiesLasted
May 8, 11:22 AM EDTSpecial Weather StatementPHIMonmouth38 min
May 8, 1:12 PM EDTSpecial Weather StatementPHIMonmouth33 min
May 8, 1:15 PM EDTAreal Flood AdvisoryPHIMiddlesex, Monmouth58 min
May 8, 1:45 PM EDTSpecial Weather StatementPHIOcean15 min
May 8, 2:01 PM EDTSpecial Weather StatementPHIOcean14 min
May 8, 2:34 PM EDTSmall Craft AdvisoryPHI7 hr
May 8, 2:42 PM EDTSpecial Weather StatementPHIMiddlesex, Monmouth, Morris48 min
May 8, 2:47 PM EDTSpecial Marine WarningPHI31 min
May 8, 3:04 PM EDTSpecial Weather StatementPHISalem26 min
May 8, 3:23 PM EDTSpecial Weather StatementPHISalem37 min
May 8, 3:43 PM EDTSpecial Marine WarningPHI62 min
May 8, 3:46 PM EDTSpecial Weather StatementPHISomerset29 min
May 8, 3:53 PM EDTSpecial Marine WarningPHI56 min
May 8, 4:01 PM EDTSpecial Marine WarningPHI48 min
May 8, 4:16 PM EDTSpecial Weather StatementPHICumberland29 min
May 8, 4:28 PM EDTSpecial Marine WarningPHI62 min
May 8, 4:46 PM EDTSpecial Weather StatementPHIHunterdon, Mercer, Middlesex, Somerset29 min
May 8, 5:22 PM EDTSpecial Marine WarningPHI53 min
May 8, 3:39 PM EDTSpecial Weather StatementPHIKent36 min
May 8, 3:54 PM EDTSpecial Weather StatementPHISussex36 min
May 8, 4:15 PM EDTSpecial Weather StatementPHISussex30 min
May 8, 4:33 PM EDTSpecial Weather StatementPHISussex27 min
May 8, 5:56 PM EDTSpecial Weather StatementPHIKent34 min
May 8, 3:21 PM EDTSpecial Weather StatementPHIQueen Anne's24 min
May 8, 3:50 PM EDTSpecial Weather StatementPHICaroline25 min
May 8, 4:06 PM EDTSpecial Weather StatementPHICaroline24 min
May 8, 6:47 PM EDTSpecial Weather StatementPHICaroline28 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.