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 Aug 7, 2018, 8:46 PM EDT for Mercer County, New Jersey. It was in force for 44 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 7, 2018, 8:46 PM EDT (00:46 UTC)
- Expired
- Aug 7, 2018, 9:30 PM EDT
- In force
- 44 min
- Issued by
- NWS Philadelphia/Mount Holly
County Mercer County, NJ
The radar
The Philadelphia radar (KDIX), 49 km from the middle of the area, began a volume at 00:50 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, 0.8 hours before the alert went out and 194 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
- 1768 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 724 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
077
WWUS81 KPHI 080046
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
846 PM EDT TUE AUG 7 2018
NJZ015-019-PAZ071-106-080130-
Northwestern Burlington-Mercer-Lower Bucks-Philadelphia-
846 PM EDT TUE AUG 7 2018
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN MERCER... NORTHWESTERN
BURLINGTON...SOUTHEASTERN BUCKS AND NORTHEASTERN PHILADELPHIA
COUNTIES...
At 844 PM EDT, a strong thunderstorm was located over Bensalem and
Northeast Philadelphia, moving east northeast at 18 mph.
Winds up to 40 mph are possible with this storm.
Locations that may be impacted include...
Northeast Philadelphia, Trenton, Bensalem, Florence, Burlington,
Bristol, Riverside, Bordentown, Beverly, Tullytown, Langhorne,
Feasterville-Trevose, Florence-Roebling, Jacksonville, Georgetown,
White Horse, Andalusia and Holmesburg.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
LAT...LON 4003 7503 4013 7503 4014 7502 4014 7503
4017 7503 4025 7469 4004 7464
TIME...MOT...LOC 0044Z 255DEG 16KT 4010 7498
$$
IovinoThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 8:28 PM EDT | Special Weather Statement | PHI | Monmouth | 47 min |
| Aug 7, 9:06 PM EDT | Areal Flood Advisory | PHI | Monmouth | 114 min |
| Aug 7, 9:16 PM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth | 4 hr |
| Aug 7, 11:33 PM EDT | Special Weather Statement | PHI | Atlantic, Cumberland | 27 min |
| Aug 8, 12:23 AM EDT | Special Weather Statement | PHI | Atlantic | 67 min |
| Aug 8, 6:40 PM EDT | Special Weather Statement | PHI | Middlesex | 35 min |
| Aug 8, 3:02 PM EDT | Special Weather Statement | PHI | Chester | 43 min |
| Aug 8, 3:40 PM EDT | Special Weather Statement | PHI | Chester | 35 min |
| Aug 8, 4:23 PM EDT | Special Weather Statement | PHI | New Castle | 37 min |
| Aug 7, 8:10 PM EDT | Special Weather Statement | PHI | Talbot | 50 min |
| Aug 7, 8:51 PM EDT | Special Weather Statement | PHI | Caroline | 39 min |
Nearby
Special Weather Statements in New Jersey, 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.