Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

May 8, 20214 counties in New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at May 8, 2021, 4:46 PM EDT for 4 counties in New Jersey. It was in force for 29 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
May 8, 2021, 4:46 PM EDT (20:46 UTC)
Expired
May 8, 2021, 5:15 PM EDT
In force
29 min
Issued by
NWS Philadelphia/Mount Holly

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

The radar

The Philadelphia radar (KDIX), 60 km from the middle of the area, began a volume at 20:46 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 12:00Z, 8.8 hours before the alert went out and 123 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°0°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.

931 
WWUS81 KPHI 082046
SPSPHI

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

NJZ009-010-012>015-082115-
Hunterdon-Eastern Monmouth-Western
Monmouth-Somerset-Middlesex-Mercer-
446 PM EDT Sat May 8 2021

...A LINE OF SHOWERS WILL AFFECT SOUTHEASTERN HUNTERDON...
NORTHEASTERN MERCER...SOMERSET...NORTHEASTERN MONMOUTH AND MIDDLESEX
COUNTIES...

At 445 PM EDT, radar indicated showers were located along a line
extending from near Cloverhill to Sayreville. Movement was east at 40
mph.

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

Locations impacted include...
New Brunswick, Perth Amboy, Long Branch, Somerville, Sandy Hook,
Somerset, Edison, Middletown, Old Bridge, East Brunswick,
Bridgewater, South Brunswick, Sayreville, North Brunswick, Marlboro,
Tinton Falls, Holmdel, Middlesex, Princeton and Red Bank.

This includes the following highways...
 New Jersey Turnpike between exits 9 and 12.
 Interstate 295 in New Jersey between mile markers 67 and 69.
 Interstate 287 in New Jersey between mile markers 0 and 18.
 Garden State Parkway between mile markers 109 and 134.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4032 7397 4027 7472 4061 7498 4061 7433
      4057 7421 4055 7425 4050 7426 4050 7428
      4046 7426 4044 7420 4046 7418 4045 7413
      4041 7399 4048 7402 4047 7399 4043 7397
TIME...MOT...LOC 2045Z 289DEG 34KT 4053 7480 4047 7431 

$$

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, 4:21 PM EDTSpecial Weather StatementPHIHunterdon, Middlesex, Somerset24 min
May 8, 4:28 PM EDTSpecial Marine WarningPHI62 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.