Alert archive / New Jersey / Special Marine Warnings in 2021
Special Marine Warning 80, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Jul 9, 2021, 3:51 AM EDT. It was in force for 84 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 9, 2021, 3:51 AM EDT (07:51 UTC)
- Expired
- Jul 9, 2021, 5:15 AM EDT
- In force
- 84 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 49.0 mph
The radar
The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 07:54 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 00:00Z, 7.9 hours before the alert went out and 257 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
- 440 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 675 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 336 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.3
The text
As transmitted.
008
WHUS51 KPHI 090751
SMWPHI
ANZ450-451-470-471-090915-
/O.NEW.KPHI.MA.W.0080.210709T0751Z-210709T0915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
351 AM EDT Fri Jul 9 2021
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Coastal and outer waters from Sandy Hook to Little Egg Inlet NJ...
* Until 515 AM EDT.
* At 350 AM EDT, thunderstorms capable of producing waterspouts were
located along a line extending from Harvey Cedars to 33 nm east of
Garden State North Reef, moving northeast at 20 knots.
HAZARD...Waterspouts and wind gusts to nearly 50 knots.
SOURCE...Radar.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas. Small craft could be damaged in briefly
higher winds and suddenly higher waves.
* Locations impacted include...
Ocean Gate, Sea Girt Reef, Ship Bottom, Barnegat Light Reef, Axel
Carlson Reef, Silverton, Harvey Cedars, Forked River, Lavallette,
Barnegat Light, Garden State North Reef, Shark River Reef, Point
Pleasant Beach, Belmar, Seaside Park, Manasquan Inlet and Pine
Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Thunderstorms can produce sudden waterspouts. Waterspouts can easily
overturn boats and create locally hazardous seas. Seek safe harbor
immediately.
&&
LAT...LON 3956 7334 3940 7342 3967 7429 3970 7426
3975 7426 4023 7408 4024 7405 4028 7406
4015 7355 3994 7337 3982 7331 3971 7330
TIME...MOT...LOC 0750Z 208DEG 19KT 3970 7417 3945 7336
WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...49KTS
$$
BAH3 follow-up statements
718
FZUS71 KPHI 090819
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
419 AM EDT Fri Jul 9 2021
ANZ450-451-470-471-090915-
/O.CON.KPHI.MA.W.0080.000000T0000Z-210709T0915Z/
419 AM EDT Fri Jul 9 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 515 AM EDT...
For the following areas...
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20
nm...
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm...
Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40
nm...
Waters from Sandy Hook NJ to Manasquan Inlet NJ out 20 to 40 nm...
At 419 AM EDT, thunderstorms capable of producing waterspouts were
located along a line extending from Seaside Park to 33 nm southeast
of Shark River Reef, moving northeast at 30 knots.
HAZARD...Waterspouts and wind gusts to nearly 50 knots.
SOURCE...Radar indicated.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas. Small craft could be damaged in briefly
higher winds and suddenly higher waves.
Locations impacted include...
Ocean Gate, Sea Girt Reef, Barnegat Light Reef, Axel Carlson Reef,
Silverton, Forked River, Lavallette, Shark River Reef, Point Pleasant
Beach, Belmar, Seaside Park, Manasquan Inlet and Pine Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Thunderstorms can produce sudden waterspouts. Waterspouts can easily
overturn boats and create locally hazardous seas. Seek safe harbor
immediately.
&&
LAT...LON 3956 7334 3981 7424 4022 7408 4024 7405
4027 7405 4028 7406 4015 7355 3994 7337
3982 7331 3971 7330
TIME...MOT...LOC 0819Z 212DEG 28KT 3993 7406 3968 7324
WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...49KTS
$$
BAH563
FZUS71 KPHI 090828
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
428 AM EDT Fri Jul 9 2021
ANZ450-451-470-471-090915-
/O.CON.KPHI.MA.W.0080.000000T0000Z-210709T0915Z/
428 AM EDT Fri Jul 9 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 515 AM EDT...
For the following areas...
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20
nm...
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm...
Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40
nm...
Waters from Sandy Hook NJ to Manasquan Inlet NJ out 20 to 40 nm...
At 428 AM EDT, severe thunderstorms capable of producing waterspouts
were located along a line extending from Lavallette to 32 nm south of
Buoy 44025, moving northeast at 20 knots.
HAZARD...Waterspouts and wind gusts to nearly 50 knots.
SOURCE...Radar indicated.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas. Small craft could be damaged in briefly
higher winds and suddenly higher waves.
Locations impacted include...
Ocean Gate, Sea Girt Reef, Shark River Reef, Point Pleasant Beach,
Belmar, Seaside Park, Manasquan Inlet, Pine Beach, Axel Carlson Reef,
Silverton and Lavallette.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Thunderstorms can produce sudden waterspouts. Waterspouts can easily
overturn boats and create locally hazardous seas. Seek safe harbor
immediately.
&&
LAT...LON 3967 7331 3989 7421 4022 7408 4024 7405
4027 7405 4028 7406 4015 7355 3994 7337
3982 7331 3971 7330
TIME...MOT...LOC 0828Z 208DEG 19KT 3996 7404 3971 7322
WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...49KTS
$$
BAH098
FZUS71 KPHI 090911
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
511 AM EDT Fri Jul 9 2021
ANZ450-451-470-471-090921-
/O.EXP.KPHI.MA.W.0080.000000T0000Z-210709T0915Z/
511 AM EDT Fri Jul 9 2021
...THE SPECIAL MARINE WARNING WILL EXPIRE AT 515 AM EDT...
The affected areas were...
Coastal and outer waters from Sandy Hook to Little Egg Inlet NJ...
The storms have moved out of the area and no longer pose a
significant threat to boaters.
LAT...LON 3967 7331 3989 7421 4022 7408 4024 7405
4027 7405 4028 7406 4015 7355 3994 7337
3982 7331 3971 7330
TIME...MOT...LOC 0911Z 208DEG 19KT 4016 7390 3991 7308
$$
BAHThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 10:25 PM EDT | Areal Flood Advisory | PHI | Cape May, Cumberland | 7 hr |
| Jul 8, 11:02 PM EDT | Special Marine Warning | PHI | 88 min | |
| Jul 8, 11:59 PM EDT | Areal Flood Advisory | PHI | Salem | 5 hr |
| Jul 9, 12:07 AM EDT | Special Marine Warning | PHI | 53 min | |
| Jul 9, 12:08 AM EDT | Areal Flood Advisory | PHI | Atlantic, Camden, Gloucester | 6 hr |
| Jul 9, 12:25 AM EDT | Special Marine Warning | PHI | 95 min | |
| Jul 9, 1:34 AM EDT | Special Marine Warning | PHI | 86 min | |
| Jul 9, 1:49 AM EDT | Special Marine Warning | PHI | 26 min | |
| Jul 9, 2:05 AM EDT | Areal Flood Advisory | PHI | Burlington, Monmouth, Ocean | 8 hr |
| Jul 9, 2:50 AM EDT | Tornado Warning | PHI | Atlantic, Cape May, Cumberland | 25 min |
| Jul 9, 2:53 AM EDT | Special Marine Warning | PHI | 68 min | |
| Jul 9, 3:38 AM EDT | Tornado Warning | PHI | Atlantic, Burlington, Ocean | 18 min |
| Jul 9, 4:08 AM EDT | Gale Warning | PHI | 3 hr | |
| Jul 9, 4:41 AM EDT | Tornado Warning | PHI | Monmouth, Ocean | 34 min |
| Jul 9, 4:44 AM EDT | Areal Flood Advisory | PHI | Mercer, Middlesex | 5 hr |
| Jul 9, 4:54 AM EDT | Areal Flood Advisory | PHI | Morris, Somerset | 5 hr |
| Jul 9, 4:58 AM EDT | Special Marine Warning | PHI | 39 min | |
| Jul 9, 5:34 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 2 hr |
| Jul 9, 6:19 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 41 min |
| Jul 9, 6:24 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jul 9, 6:50 PM EDT | Areal Flood Advisory | PHI | Gloucester, Salem | 2 hr |
| Jul 9, 6:57 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Gloucester, Salem | 63 min |
| Jul 9, 7:17 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 23 min |
| Jul 9, 7:39 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Sussex, Warren | 2 hr |
| Jul 9, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem | 62 min |
| Jul 9, 7:46 PM EDT | Areal Flood Advisory | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 108 min |
| Jul 9, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware | 43 min |
| Jul 9, 6:55 PM EDT | Special Weather Statement | PHI | Carbon | 35 min |
| Jul 9, 7:07 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh, Monroe, Northampton | 3 hr |
| Jul 9, 7:31 PM EDT | Special Weather Statement | PHI | Northampton | 29 min |
| Jul 8, 10:19 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 5 hr |
| Jul 8, 11:37 PM EDT | Tornado Warning | PHI | Sussex | 23 min |
| Jul 8, 11:59 PM EDT | Tornado Warning | PHI | Sussex | 12 min |
| Jul 9, 12:04 AM EDT | Tornado Warning | PHI | Sussex | 26 min |
| Jul 9, 12:11 AM EDT | Tornado Warning | PHI | Sussex | 35 min |
| Jul 9, 12:28 AM EDT | Tornado Warning | PHI | Sussex | 17 min |
| Jul 9, 4:54 PM EDT | Special Weather Statement | PHI | New Castle | 66 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.