Alert archive / New Jersey / Special Marine Warnings in 2021
Special Marine Warning 128, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Aug 30, 2021, 6:16 PM EDT. It was in force for 89 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 30, 2021, 6:16 PM EDT (22:16 UTC)
- Expired
- Aug 30, 2021, 7:45 PM EDT
- In force
- 89 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), 83 km from the middle of the area, began a volume at 22:18 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.3 hours before the alert went out and 161 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
- 392 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 791 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- -9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
382
WHUS51 KPHI 302216
SMWPHI
ANZ452>454-302345-
/O.NEW.KPHI.MA.W.0128.210830T2216Z-210830T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
616 PM EDT Mon Aug 30 2021
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Coastal waters from Little Egg Inlet NJ to Cape Henlopen DE out 20
nm...
* Until 745 PM EDT.
* At 616 PM EDT, strong thunderstorms were located along a line
extending from near Brigantine to near Fourteen Foot Bank Light,
moving southeast at 5 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...
Atlantic City, Buoy 2fb, Atlantic City Reef, Buoy 4fb, Buoy 3fb,
Great Egg Inlet, Cape May Point, Great Egg Reef, Ocean City Reef,
Wildwood, The Lump, 28-
Mile Wreck, Buoy Ge, Cape May Reef, Brigantine, Sea Isle City and
Wildwood Reef.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor until hazardous weather passes.
Frequent lightning is occurring with these storms. If caught on the
open water, stay below deck if possible and keep away from ungrounded
metal objects.
&&
LAT...LON 3948 7450 3937 7395 3878 7463 3892 7499
TIME...MOT...LOC 2216Z 296DEG 7KT 3941 7429 3909 7518
HAIL...0.00IN
WIND...>34KTS
$$
Gorse1 follow-up statement
949
FZUS71 KPHI 302242
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
642 PM EDT Mon Aug 30 2021
ANZ452>454-302345-
/O.CON.KPHI.MA.W.0128.000000T0000Z-210830T2345Z/
642 PM EDT Mon Aug 30 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 745 PM EDT...
For the following areas...
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm...
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm...
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20
nm...
At 642 PM EDT, strong thunderstorms were located along a line
extending from near Great Egg Inlet to near Sea Isle City to
Brandywine Shoal Light, moving south at 15 knots.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Radar indicated.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
Locations impacted include...
Buoy 2fb, Atlantic City Reef, Buoy 4fb, Buoy 3fb, Great Egg Inlet,
Cape May Point, Great Egg Reef, Ocean City Reef, Wildwood, The Lump,
28-
Mile Wreck, Buoy Ge, Cape May Reef, Sea Isle City, Wildwood Reef and
Atlantic City.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor until hazardous weather passes.
Frequent lightning is occurring with these storms. If caught on the
open water, stay below deck if possible and keep away from ungrounded
metal objects.
&&
LAT...LON 3937 7460 3937 7395 3878 7463 3892 7499
TIME...MOT...LOC 2242Z 353DEG 16KT 3932 7449 3912 7475 3901 7512
HAIL...0.00IN
WIND...>34KTS
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 5:00 AM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 71 hr |
| Aug 30, 5:44 AM EDT | Dense Fog Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more | 3 hr |
| Aug 30, 4:48 PM EDT | Special Weather Statement | PHI | Atlantic, Cumberland | 27 min |
| Aug 30, 5:16 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 44 min |
| Aug 30, 5:21 PM EDT | Special Weather Statement | PHI | Atlantic | 24 min |
| Aug 30, 5:26 PM EDT | Special Marine Warning | PHI | 64 min | |
| Aug 30, 5:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Aug 30, 5:53 PM EDT | Special Weather Statement | PHI | Atlantic | 22 min |
| Aug 30, 5:56 PM EDT | Special Weather Statement | PHI | Cape May | 49 min |
| Aug 30, 6:41 PM EDT | Special Weather Statement | PHI | Cape May | 34 min |
| Aug 30, 7:20 PM EDT | Special Weather Statement | PHI | Cape May | 25 min |
| Aug 30, 7:31 PM EDT | Special Marine Warning | PHI | 59 min | |
| Aug 30, 3:44 PM EDT | Special Weather Statement | PHI | New Castle | 31 min |
| Aug 30, 4:14 PM EDT | Special Weather Statement | PHI | Kent | 31 min |
| Aug 30, 6:02 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 28 min |
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.