Alert archive / New Jersey / Special Marine Warnings in 2021
Special Marine Warning 86, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Jul 14, 2021, 5:47 PM EDT. It was in force for 43 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
- Jul 14, 2021, 5:47 PM EDT (21:47 UTC)
- Expired
- Jul 14, 2021, 6:30 PM EDT
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 34.0 mph
The radar
The Philadelphia radar (KDIX), 35 km from the middle of the area, began a volume at 21:50 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 12:00Z, 9.8 hours before the alert went out and 137 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
- 1588 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 506 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted.
161
WHUS51 KPHI 142147
SMWPHI
ANZ450-451-142230-
/O.NEW.KPHI.MA.W.0086.210714T2147Z-210714T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
547 PM EDT Wed Jul 14 2021
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Coastal waters from Sandy Hook to Little Egg Inlet NJ out 20 nm...
* Until 630 PM EDT.
* At 547 PM EDT, a strong thunderstorm was located over Silverton,
moving east at 10 knots.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Radar.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
* Locations impacted include...
Ocean Gate, Point Pleasant Beach, Seaside Park, Axel Carlson Reef,
Silverton, Lavallette, Manasquan Inlet and Pine Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor until hazardous weather passes.
Report severe weather to the Coast Guard or the National Weather
Service.
&&
LAT...LON 3993 7417 4009 7414 4013 7376 3986 7379
TIME...MOT...LOC 2147Z 275DEG 11KT 4002 7407
HAIL...0.00IN
WIND...>34KTS
$$
Fitzsimmons1 follow-up statement
067 FZUS71 KPHI 142230 MWSPHI Marine Weather Statement National Weather Service Mount Holly NJ 630 PM EDT Wed Jul 14 2021 ANZ450-451-142240- /O.EXP.KPHI.MA.W.0086.000000T0000Z-210714T2230Z/ 630 PM EDT Wed Jul 14 2021 ...THE SPECIAL MARINE WARNING EXPIRED AT 630 PM EDT... The affected areas were... Coastal waters from Sandy Hook to Little Egg Inlet NJ out 20 nm... The thunderstorm has weakened and no longer poses a significant threat to boaters. LAT...LON 3993 7417 4009 7414 4013 7376 3986 7379 TIME...MOT...LOC 2230Z 275DEG 11KT 4001 7391 $$ Fitzsimmons
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 3:42 PM EDT | Special Weather Statement | PHI | Morris | 18 min |
| Jul 14, 5:54 PM EDT | Special Weather Statement | PHI | Ocean | 51 min |
| Jul 14, 6:41 PM EDT | Special Weather Statement | PHI | Monmouth | 34 min |
| Jul 14, 7:03 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 14, 7:03 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 42 min |
| Jul 14, 7:24 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 36 min |
| Jul 14, 7:26 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth | 2 hr |
| Jul 14, 7:37 PM EDT | Flash Flood Warning | PHI | Monmouth | 3 hr |
Nearby
Special Marine Warnings in New Jersey, 2021Every special marine warning 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.