Alert archive / New Jersey / Special Marine Warnings in 2021
Special Marine Warning 63, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Jul 1, 2021, 5:46 PM EDT. It was in force for 119 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 1, 2021, 5:46 PM EDT (21:46 UTC)
- Expired
- Jul 1, 2021, 7:45 PM EDT
- In force
- 119 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 50.0 mph
The radar
The Philadelphia radar (KDIX), 37 km from the middle of the area, began a volume at 21:48 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 1, 6:20 PM EDT | TSTM WND DMG | 2 Ese Leisure Village E, NJ | SEVERAL REPORTS OF DOWNED WIRES IN BRICK TOWNSHIP AND THE LEISURE VILLAGE EAST AREA. TIME ESTIMATED FROM RADAR. |
| Jul 1, 6:25 PM EDT | TSTM WND DMG | 2 Nnw Wanamassa, NJ | SEVERAL REPORTS OF DOWNED POWER LINES IN THE WANAMASSA AND DEAL AREAS. TIME ESTIMATED FROM RADAR. |
| Jul 1, 6:44 PM EDT | TSTM WND GST 47 | Surf City, NJ | WEATHERFLOW. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.8 hours before the alert went out and 135 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
- 286 J/kg
- Mixed-layer CIN
- -126 J/kg
- Mixed-layer LCL
- 978 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
734
WHUS51 KPHI 012146
SMWPHI
ANZ450>452-470>472-012345-
/O.NEW.KPHI.MA.W.0063.210701T2146Z-210701T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
546 PM EDT Thu Jul 1 2021
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Coastal and outer waters from Sandy Hook to Great Egg Inlet NJ...
* Until 745 PM EDT.
* At 546 PM EDT, severe thunderstorms capable of producing
waterspouts were located along a line extending from 13 nm west of
Belmar to 15 nm northwest of Buoy Ge, moving east at 20 knots.
HAZARD...Waterspouts and wind gusts in excess of 50 knots.
SOURCE...Law enforcement.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas. Boats could suffer significant structural
damage in high winds. Small craft could capsize in
suddenly higher waves.
* Locations impacted include...
Sea Girt Reef, Atlantic City, Ship Bottom, Atlantic Highlands,
Garden State South Reef, Axel Carlson Reef, Silverton, Harvey
Cedars, Lavallette, Barnegat Light, North Beach Haven, Point
Pleasant Beach, Seaside Park, Brigantine, Ocean Gate, Little Egg
Reef, Atlantic City Reef, Barnegat Light Reef, Monmouth Beach and
Sea Bright.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor immediately as gusty winds and high waves are
expected.
&&
LAT...LON 4044 7398 4024 7363 3986 7333 3966 7331
3936 7344 3906 7367 3938 7464 3970 7426
3982 7426 3990 7420 3992 7423 3999 7421
4020 7411 4024 7405 4027 7405 4031 7411
4040 7409 4042 7405 4040 7398
TIME...MOT...LOC 2146Z 289DEG 22KT 4021 7433 3947 7483
WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...50KTS
$$
CMS1 follow-up statement
440
FZUS71 KPHI 012304
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
704 PM EDT Thu Jul 1 2021
ANZ450>452-470>472-012345-
/O.CON.KPHI.MA.W.0063.000000T0000Z-210701T2345Z/
704 PM EDT Thu Jul 1 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 745 PM EDT...
For the following areas...
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20
nm...
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20
nm...
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm...
Waters from Little Egg Inlet NJ to Great Egg Inlet NJ out 20 to 40 nm
from 20 to 40 NM...
Waters from Manasquan Inlet NJ to Little Egg Inlet NJ out 20 to 40
nm...
Waters from Sandy Hook NJ to Manasquan Inlet NJ out 20 to 40 nm...
At 703 PM EDT, severe thunderstorms capable of producing waterspouts
were located along a line extending from near Entrance to New York
Harbor to 12 nm east of Barnegat Light Reef to 23 nm southeast of
Garden State North Reef to 27 nm east of Deepwater Reef, moving
northeast at 45 knots.
HAZARD...Waterspouts and wind gusts to 40 knots.
SOURCE...Law enforcement.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas. Small craft could be damaged in briefly
higher winds and suddenly higher waves.
Locations impacted include...
Sea Girt Reef, Barnegat Light, Garden State North Reef, Shark River
Reef, Seaside Park, Barnegat Light Reef, Axel Carlson Reef, Harvey
Cedars, Forked River, Lavallette, Point Pleasant Beach and Ocean
Gate.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor immediately as gusty winds and high waves are
expected.
&&
LAT...LON 3948 7338 3936 7344 3906 7367 3926 7402
3945 7400 3977 7421 4038 7388 4023 7362
3985 7333 3966 7331
TIME...MOT...LOC 2303Z 244DEG 43KT 4033 7371 3976 7377 3947 7357 3913
7364
WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...40KTS
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 8:37 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer | 38 min |
| Jun 30, 8:56 PM EDT | Special Marine Warning | PHI | 94 min | |
| Jun 30, 9:05 PM EDT | Special Weather Statement | PHI | Somerset | 40 min |
| Jun 30, 9:21 PM EDT | Special Weather Statement | PHI | Salem | 39 min |
| Jun 30, 9:49 PM EDT | Special Weather Statement | PHI | Monmouth | 26 min |
| Jun 30, 9:51 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jul 1, 2:58 AM EDT | Small Craft Advisory | PHI | 17 hr | |
| Jul 1, 1:10 PM EDT | Special Weather Statement | PHI | Monmouth | 50 min |
| Jul 1, 1:16 PM EDT | Special Weather Statement | PHI | Atlantic | 29 min |
| Jul 1, 1:28 PM EDT | Special Marine Warning | PHI | 62 min | |
| Jul 1, 1:31 PM EDT | Special Weather Statement | PHI | Cumberland | 29 min |
| Jul 1, 4:21 PM EDT | Special Marine Warning | PHI | 114 min | |
| Jul 1, 4:27 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Salem and 1 more | 48 min |
| Jul 1, 4:55 PM EDT | Severe Thunderstorm Warning | PHI | Cape May, Cumberland, Salem | 80 min |
| Jul 1, 4:59 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 2 more | 46 min |
| Jul 1, 5:02 PM EDT | Tornado Warning | PHI | Burlington, Mercer | 28 min |
| Jul 1, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more | 93 min |
| Jul 1, 5:35 PM EDT | Tornado Warning | PHI | Mercer, Monmouth, Ocean | 25 min |
| Jul 1, 5:40 PM EDT | Special Marine Warning | PHI | 65 min | |
| Jul 1, 6:13 PM EDT | Special Marine Warning | PHI | 92 min | |
| Jun 30, 8:16 PM EDT | Special Weather Statement | PHI | Bucks, Montgomery | 44 min |
| Jul 1, 2:51 PM EDT | Special Weather Statement | PHI | Chester, Montgomery | 39 min |
| Jul 1, 3:13 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Chester, Lehigh, Montgomery | 47 min |
| Jul 1, 3:23 PM EDT | Areal Flood Advisory | PHI | Chester, Montgomery | 77 min |
| Jul 1, 3:48 PM EDT | Areal Flood Advisory | PHI | Bucks, Delaware, Montgomery, Philadelphia | 112 min |
| Jul 1, 3:50 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 40 min |
| Jul 1, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 52 min |
| Jul 1, 4:08 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 52 min |
| Jul 1, 4:10 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 94 min |
| Jul 1, 4:32 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle, Sussex | 43 min |
| Jul 1, 4:57 PM EDT | Tornado Warning | PHI | Kent, Sussex | 22 min |
| Jul 1, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 48 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.