Alert archive / New Jersey / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

June 8, 2021Hunterdon County, Morris County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jun 8, 2021, 2:48 PM EDT for Hunterdon County, Morris County, Somerset County, New Jersey. It was in force for 27 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: Jun 8, 2021, 2:48 PM EDT (18:48 UTC)
Expired: Jun 8, 2021, 3:15 PM EDT
In force: 27 min
Issued by: NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 18:47 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, 6.8 hours before the alert went out and 150 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 740 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1004 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

840 
WWUS81 KPHI 081848
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
248 PM EDT Tue Jun 8 2021

NJZ008>010-012-015-081915-
Hunterdon-Morris-Somerset-Middlesex-Mercer-
248 PM EDT Tue Jun 8 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN
HUNTERDON...SOUTHEASTERN MORRIS...NORTHWESTERN MERCER...SOMERSET AND
NORTHWESTERN MIDDLESEX COUNTIES...

At 248 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Morristown to near Flagtown to near
Sergeantsville. Movement was southeast at 20 mph.

Wind gusts up to 45 mph and half inch hail are possible with these 
storms.

Locations impacted include...
New Brunswick, Morristown, Somerville, Somerset, Bridgewater,
Madison, Middlesex, Florham Park, East Hanover, Bound Brook,
Manville, Chatham, Morris Plains, Mendham, Flemington, Peapack And
Gladstone, Hopewell, Frenchtown, Far Hills and Rocky Hill.

This includes the following highways...
 Interstate 78 in New Jersey between mile markers 24 and 43.
 Interstate 287 in New Jersey between mile markers 3 and 39.
 Garden State Parkway between mile markers 133 and 134.

If outdoors, consider seeking shelter inside a building.

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

LAT...LON 4044 7449 4032 7492 4040 7496 4040 7502
      4046 7507 4054 7506 4060 7485 4086 7455
      4082 7434 4079 7437 4074 7437 4067 7446
      4066 7445 4067 7441 4065 7440 4060 7446
      4060 7430
TIME...MOT...LOC 1848Z 299DEG 19KT 4077 7452 4055 7473 4047 7497 

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 1:27 PM EDT	Areal Flood Advisory	PHI	Warren	3 hr
Jun 8, 1:49 PM EDT	Special Weather Statement	PHI	Warren	26 min
Jun 8, 1:54 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex	95 min
Jun 8, 2:19 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer	2 hr
Jun 8, 2:29 PM EDT	Special Weather Statement	PHI	Morris	16 min
Jun 8, 3:13 PM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	32 min
Jun 8, 3:14 PM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	74 min
Jun 8, 4:12 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	48 min
Jun 8, 4:14 PM EDT	Special Marine Warning	PHI		91 min
Jun 8, 4:44 PM EDT	Special Weather Statement	PHI	Salem	31 min
Jun 8, 4:47 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	43 min
Jun 8, 4:54 PM EDT	Special Marine Warning	PHI		96 min
Jun 8, 4:56 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Gloucester	49 min
Jun 8, 4:58 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	47 min
Jun 8, 5:30 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	45 min
Jun 8, 5:43 PM EDT	Special Weather Statement	PHI	Ocean	32 min
Jun 8, 6:01 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	44 min
Jun 8, 6:22 PM EDT	Special Marine Warning	PHI		83 min
Jun 8, 7:39 PM EDT	Special Marine Warning	PHI		66 min
Jun 8, 7:52 PM EDT	Special Weather Statement	PHI	Cape May	38 min
Jun 8, 11:54 AM EDT	Areal Flood Advisory	PHI	Monroe	2 hr
Jun 8, 12:34 PM EDT	Flash Flood Warning	PHI	Monroe	2 hr
Jun 8, 12:40 PM EDT	Special Weather Statement	PHI	Monroe	35 min
Jun 8, 1:09 PM EDT	Special Weather Statement	PHI	Monroe	21 min
Jun 8, 1:17 PM EDT	Special Weather Statement	PHI	Chester	13 min
Jun 8, 1:18 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	3 hr
Jun 8, 1:24 PM EDT	Special Weather Statement	PHI	Delaware	21 min
Jun 8, 1:35 PM EDT	Flash Flood Warning	PHI	Chester, Delaware, Montgomery	5 hr
Jun 8, 2:07 PM EDT	Special Weather Statement	PHI	Bucks	23 min
Jun 8, 2:43 PM EDT	Special Weather Statement	PHI	Montgomery	32 min
Jun 8, 3:15 PM EDT	Special Weather Statement	PHI	Chester	30 min
Jun 8, 3:21 PM EDT	Flash Flood Warning	PHI	Chester, Montgomery	3 hr
Jun 8, 3:43 PM EDT	Special Weather Statement	PHI	Chester	32 min
Jun 8, 4:20 PM EDT	Special Weather Statement	PHI	Chester	25 min
Jun 8, 4:25 PM EDT	River Flood Warning	PHI	Chester	11 hr
Jun 8, 6:21 PM EDT	Areal Flood Warning	PHI	Chester, Delaware	15 hr
Jun 8, 7:14 PM EDT	River Flood Warning	PHI	Chester, Delaware	18 hr
Jun 8, 7:43 PM EDT	Special Weather Statement	PHI	Sussex	32 min

Nearby

Special Weather Statements in New Jersey, 2021 Every 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.