Alert archive / New Jersey / Special Weather Statements in 2018

Special Weather Statement, NWS Philadelphia/Mount Holly

August 4, 2018Hunterdon County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 4, 2018, 5:04 PM EDT for Hunterdon County, New Jersey. It was in force for 56 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, 5:04 PM EDT (21:04 UTC)
Expired: Aug 4, 2018, 6:00 PM EDT
In force: 56 min
Issued by: NWS Philadelphia/Mount Holly

County Hunterdon County, NJ

The radar

The Philadelphia radar (KDIX), 76 km from the middle of the area, began a volume at 21:03 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, 9.1 hours before the alert went out and 183 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: 1326 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 507 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 150 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

658 
WWUS81 KPHI 042104
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
504 PM EDT SAT AUG 4 2018

NJZ009-010-015-PAZ105-106-042200-
Hunterdon-Somerset-Mercer-Lower Bucks-Upper Bucks-
504 PM EDT SAT AUG 4 2018

...A STRONG THUNDERSTORM WILL AFFECT HUNTERDON...NORTHWESTERN
MERCER...SOUTHWESTERN SOMERSET AND NORTHEASTERN BUCKS COUNTIES...

At 503 PM EDT, a strong thunderstorm was located over Milford, 
moving southeast at 20 mph.

Winds up to 40 mph and half inch hail are possible with this storm.

Locations impacted include...
Byram, Flemington, Tinicum, New Hope, Hopewell, Ferndale, Frenchtown,
Milford, Bloomsbury, Stockton, Washington Crossing, Flagtown, Revere,
Ottsville, Sergeantsville, Pipersville, Cloverhill, Erwinna,
Lumberville and Sand Brook.

If you observe threatening weather, seek shelter at once.

LAT...LON 4028 7485 4050 7529 4064 7513 4067 7506
      4053 7464
TIME...MOT...LOC 2103Z 298DEG 18KT 4056 7511 

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 9:10 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Aug 3, 10:07 PM EDT	Special Weather Statement	PHI	Warren	53 min
Aug 3, 10:35 PM EDT	Special Weather Statement	PHI	Morris, Sussex, Warren	55 min
Aug 4, 2:53 AM EDT	Areal Flood Advisory	PHI	Warren	4 hr
Aug 4, 3:09 AM EDT	Special Weather Statement	PHI	Warren	51 min
Aug 4, 3:14 AM EDT	Areal Flood Advisory	PHI	Sussex	4 hr
Aug 4, 3:55 AM EDT	Special Weather Statement	PHI	Sussex	65 min
Aug 4, 3:58 AM EDT	Areal Flood Warning	PHI	Sussex, Warren	33 hr
Aug 4, 5:12 AM EDT	Areal Flood Advisory	PHI	Morris	3 hr
Aug 4, 5:45 AM EDT	Areal Flood Advisory	PHI	Hunterdon	7 hr
Aug 4, 5:56 AM EDT	Areal Flood Advisory	PHI	Morris	3 hr
Aug 4, 6:19 AM EDT	Flash Flood Warning	PHI	Morris	4 hr
Aug 4, 6:55 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Somerset	4 hr
Aug 4, 8:19 AM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	4 hr
Aug 4, 9:32 AM EDT	Flash Flood Warning	PHI	Somerset	3 hr
Aug 4, 9:39 AM EDT	Small Craft Advisory	PHI		6 hr
Aug 4, 10:16 AM EDT	Areal Flood Warning	PHI	Morris	4 hr
Aug 4, 10:51 AM EDT	Areal Flood Warning	PHI	Hunterdon, Somerset	4 hr
Aug 4, 12:13 PM EDT	Areal Flood Warning	PHI	Middlesex, Somerset	2 hr
Aug 4, 4:41 PM EDT	Severe Thunderstorm Warning	PHI	Warren	34 min
Aug 3, 8:35 PM EDT	Areal Flood Advisory	PHI	Carbon	4 hr
Aug 3, 9:03 PM EDT	Flash Flood Warning	PHI	Berks	8 hr
Aug 3, 10:23 PM EDT	Flash Flood Warning	PHI	Lehigh, Northampton	4 hr
Aug 3, 11:24 PM EDT	Areal Flood Advisory	PHI	Berks, Lehigh	6 hr
Aug 4, 12:24 AM EDT	Areal Flood Advisory	PHI	Carbon	4 hr
Aug 4, 1:08 AM EDT	Areal Flood Advisory	PHI	Monroe	4 hr
Aug 4, 1:15 AM EDT	Special Weather Statement	PHI	Berks	30 min
Aug 4, 1:47 AM EDT	Special Weather Statement	PHI	Berks, Lehigh	43 min
Aug 4, 1:59 AM EDT	Areal Flood Advisory	PHI	Chester	4 hr
Aug 4, 2:22 AM EDT	Areal Flood Warning	PHI	Lehigh, Northampton	21 hr
Aug 4, 2:27 AM EDT	Special Weather Statement	PHI	Lehigh, Northampton	63 min
Aug 4, 4:54 AM EDT	Areal Flood Warning	PHI	Berks	7 hr
Aug 4, 5:09 AM EDT	Areal Flood Advisory	PHI	Monroe	2 hr
Aug 4, 6:45 AM EDT	River Flood Warning	PHI	Chester	4 hr
Aug 4, 8:48 AM EDT	Areal Flood Warning	PHI	Chester, Montgomery	4 hr
Aug 4, 9:20 AM EDT	River Flood Warning	PHI	Montgomery	3 hr
Aug 4, 11:55 AM EDT	River Flood Warning	PHI	Chester, Montgomery, Philadelphia	12 hr
Aug 3, 11:25 PM EDT	Special Weather Statement	PHI	Talbot	50 min
Aug 4, 12:01 AM EDT	Special Weather Statement	PHI	Kent, Queen Anne's	29 min

Nearby

Special Weather Statements in New Jersey, 2018 Every 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.