Alert archive / New Jersey / Special Weather Statements in 2018
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Jun 18, 2018, 8:36 PM EDT for Mercer County, Middlesex County, New Jersey; Philadelphia County, Pennsylvania. It was in force for 24 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 18, 2018, 8:36 PM EDT (00:36 UTC)
- Expired
- Jun 18, 2018, 9:00 PM EDT
- In force
- 24 min
- Issued by
- NWS Philadelphia/Mount Holly
Counties Mercer County, NJ, Middlesex County, NJ, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 46 km from the middle of the area, began a volume at 00:36 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, 0.6 hours before the alert went out and 136 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.
- Mixed-layer CAPE
- 17 J/kg
- Mixed-layer CIN
- -297 J/kg
- Mixed-layer LCL
- 1213 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 185 m²/s²
- 0-3 km storm-relative helicity
- 273 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted.
104
WWUS81 KPHI 190036
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
836 PM EDT MON JUN 18 2018
NJZ009-010-012>015-018-019-PAZ071-104-106-190100-
Hunterdon-Northwestern Burlington-Eastern Monmouth-Camden-Western
Monmouth-Somerset-Middlesex-Mercer-Lower Bucks-Eastern
Montgomery-Philadelphia-
836 PM EDT MON JUN 18 2018
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN
HUNTERDON...NORTHWESTERN CAMDEN...MERCER...NORTHWESTERN BURLINGTON...
SOUTHERN SOMERSET...MIDDLESEX...CENTRAL MONMOUTH...SOUTHEASTERN
MONTGOMERY...SOUTHEASTERN BUCKS AND PHILADELPHIA COUNTIES...
At 834 PM EDT, radar indicated that strong thunderstorms were
located along a line extending from Watchung to Lambertville in New
Jersey to around Norristown in Pennsylvania. Movement was southeast
at 35 mph.
Winds up to 35 mph are possible with these storms.
Locations impacted include...
Philadelphia, Trenton, Camden, New Brunswick, Perth Amboy,
Somerville, Gloucester City, Sandy Hook, Somerset, Edison, Cherry
Hill, Middletown, Old Bridge, Bensalem, East Brunswick, Evesham,
South Brunswick, Sayreville, Mount Laurel and North Brunswick.
Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 4017 7436 4017 7441 4008 7455 4006 7454
3980 7497 4005 7535 4066 7446 4067 7443
4060 7446 4059 7421 4050 7428 4046 7426
4045 7413 4041 7403 4044 7399 4047 7402
4047 7401 4044 7398 4042 7400 4039 7398
TIME...MOT...LOC 0034Z 294DEG 33KT 4061 7434 4012 7512
$$
IovinoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 8:42 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 48 min |
| Jun 18, 8:56 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth | 64 min |
| Jun 18, 8:59 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jun 18, 9:40 PM EDT | Special Weather Statement | PHI | Burlington, Ocean | 50 min |
Nearby
Special Weather Statements in New Jersey, 2018Special Weather Statements in Pennsylvania, 2018Every 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.