Alert archive / New Jersey / Special Marine Warnings in 2021
Special Marine Warning 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Feb 22, 2021, 2:22 PM EST. It was in force for 113 min. 2 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
- Feb 22, 2021, 2:22 PM EST (19:22 UTC)
- Expired
- Feb 22, 2021, 4:15 PM EST
- In force
- 113 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), 57 km from the middle of the area, began a volume at 19:26 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 |
|---|---|---|---|
| Feb 22, 2:35 PM EST | MARINE TSTM WIND 60 | 2 S Tuckerton, NJ | |
| Feb 22, 2:45 PM EST | MARINE TSTM WIND 39 | Surf City, NJ |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.4 hours before the alert went out and 195 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1225 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 362 m²/s²
- 0-3 km storm-relative helicity
- 398 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
642
WHUS51 KPHI 221922
SMWPHI
ANZ431-450>454-470>473-475-222115-
/O.NEW.KPHI.MA.W.0003.210222T1922Z-210222T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
222 PM EST Mon Feb 22 2021
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Lower Delaware Bay...
Coastal waters from Sandy Hook NJ to Cape Henlopen DE out 20 nm...
Outer waters from Sandy Hook NJ to Fenwick Island DE out 20 to 40
nm...
* Until 415 PM EST.
* At 221 PM EST, a line of showers were located along a line
extending from near Manasquan Inlet to near Buoy 2ms, moving east
at 25 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...
Sea Girt Reef, Atlantic City, Five Fathoms Buoy, Buoy 2fb, Buoy
4fb, Ship Bottom, Buoy 3fb, Deepwater Reef, Garden State South
Reef, Axel Carlson Reef, Silverton, Harvey Cedars, Great Egg Reef,
Ocean City Reef, Lavallette, The Lump, Barnegat Light, North Beach
Haven, 28-Mile Wreck and Point Pleasant Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek safe shelter immediately. Mariners can expect gusty winds and
increasing waves.
&&
LAT...LON 3960 7332 3905 7368 3879 7395 3863 7417
3889 7509 3919 7486 3915 7481 3920 7477
3926 7480 3945 7466 3938 7466 3947 7450
3955 7458 3962 7453 3960 7439 3970 7426
3996 7425 4021 7406 4017 7357 3986 7333
TIME...MOT...LOC 1921Z 280DEG 23KT 4014 7406 3888 7483
HAIL...0.00IN
WIND...>34KTS
$$
CMS5 follow-up statements
772
FZUS71 KPHI 221941
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
241 PM EST Mon Feb 22 2021
ANZ431-450>454-470>473-475-222115-
/O.CON.KPHI.MA.W.0003.000000T0000Z-210222T2115Z/
241 PM EST Mon Feb 22 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 415 PM EST...
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...
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...
Delaware Bay waters south of East Point NJ to Slaughter Beach DE...
Waters from Cape May NJ to Fenwick Island DE out 20 to 40 nm...
Waters from Great Egg Inlet NJ to Cape May NJ out 20 to 40 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 240 PM EST, showers were located along a line extending from near
Shark River Reef to near Cape May Reef, moving east at 30 knots.
HAZARD...Wind gusts to 40 knots.
SOURCE...A wind gust to 40 knots was reported in Mantoloking at 225
pm.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
Locations impacted include...
Sea Girt Reef, Atlantic City, Five Fathoms Buoy, Buoy 2fb, Buoy 4fb,
Ship Bottom, Buoy 3fb, Deepwater Reef, Garden State South Reef, Axel
Carlson Reef, Silverton, Harvey Cedars, Great Egg Reef, Ocean City
Reef, Lavallette, The Lump, Barnegat Light, North Beach Haven, 28-
Mile Wreck and Point Pleasant Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek safe shelter immediately. Mariners can expect gusty winds and
increasing waves.
&&
LAT...LON 3960 7332 3905 7368 3879 7395 3863 7417
3889 7509 3919 7486 3915 7481 3920 7477
3926 7480 3945 7466 3938 7466 3947 7450
3955 7458 3962 7453 3960 7439 3970 7426
3996 7425 4021 7406 4017 7357 3986 7333
TIME...MOT...LOC 1940Z 281DEG 31KT 4009 7380 3886 7468
HAIL...0.00IN
WIND...40KTS
$$
CMS773
FZUS71 KPHI 221958
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
258 PM EST Mon Feb 22 2021
ANZ431-450>454-470>473-475-222115-
/O.CON.KPHI.MA.W.0003.000000T0000Z-210222T2115Z/
258 PM EST Mon Feb 22 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 415 PM EST...
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...
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...
Delaware Bay waters south of East Point NJ to Slaughter Beach DE...
Waters from Cape May NJ to Fenwick Island DE out 20 to 40 nm...
Waters from Great Egg Inlet NJ to Cape May NJ out 20 to 40 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 256 PM EST, showers were located along a line extending from near
Shark River Reef to near Buoy 4fb, moving east at 25 knots. Winds
will remain elevated to the west of this band of showers for at
least an hour.
HAZARD...Wind gusts to 40 knots.
SOURCE...Surface observations. Several stations in Ocean County have
reported wind gusts to 40 knots in the past hour.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
Locations impacted include...
Sea Girt Reef, Atlantic City, Five Fathoms Buoy, Buoy 2fb, Buoy 4fb,
Ship Bottom, Buoy 3fb, Deepwater Reef, Garden State South Reef, Axel
Carlson Reef, Silverton, Harvey Cedars, Great Egg Reef, Ocean City
Reef, Lavallette, The Lump, Barnegat Light, North Beach Haven, 28-
Mile Wreck and Point Pleasant Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek safe shelter immediately. Mariners can expect gusty winds and
increasing waves.
&&
LAT...LON 3960 7332 3905 7368 3879 7395 3863 7417
3889 7509 3919 7486 3915 7481 3920 7477
3926 7480 3945 7466 3938 7466 3947 7450
3955 7458 3962 7453 3960 7439 3970 7426
3996 7425 4021 7406 4017 7357 3986 7333
TIME...MOT...LOC 1956Z 280DEG 23KT 4007 7367 3884 7455
HAIL...0.00IN
WIND...40KTS
$$
CMS858
FZUS71 KPHI 222020
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
320 PM EST Mon Feb 22 2021
ANZ431-222030-
/O.CAN.KPHI.MA.W.0003.000000T0000Z-210222T2115Z/
320 PM EST Mon Feb 22 2021
...THE SPECIAL MARINE WARNING IS CANCELLED...
The affected areas were...
Lower Delaware Bay...
The showers have moved out of the warned area and no longer pose a
significant threat to boaters.
LAT...LON 3905 7368 3882 7392 3868 7415 3890 7498
3988 7410 4018 7367 4017 7357 3986 7333
3960 7332
TIME...MOT...LOC 2020Z 280DEG 23KT 4005 7351 3882 7440
$$
ANZ450>454-470>473-475-222115-
/O.CON.KPHI.MA.W.0003.000000T0000Z-210222T2115Z/
320 PM EST Mon Feb 22 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 415 PM EST...
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...
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 Cape May NJ to Fenwick Island DE out 20 to 40 nm...
Waters from Great Egg Inlet NJ to Cape May NJ out 20 to 40 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 320 PM EST, showers were located along a line extending from 9 nm
southeast of Shark River Reef to 8 nm east of Five Fathoms Buoy,
moving east at 25 knots. Strong winds will continue well behind the
line of showers.
HAZARD...Wind gusts to 40 knots.
SOURCE...Radar indicated.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
Locations impacted include...
Atlantic City, Buoy 2fb, Buoy 4fb, Ship Bottom, Buoy 3fb, Deepwater
Reef, Garden State South Reef, Harvey Cedars, Great Egg Reef, Ocean
City Reef, The Lump, Barnegat Light, North Beach Haven, 28-
Mile Wreck, Brigantine, Little Egg Reef, Atlantic City Reef, Great
Egg Inlet, Barnegat Light Reef and Forked River.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek safe shelter immediately. Mariners can expect gusty winds and
increasing waves.
&&
LAT...LON 3905 7368 3882 7392 3868 7415 3890 7498
3988 7410 4018 7367 4017 7357 3986 7333
3960 7332
TIME...MOT...LOC 2020Z 280DEG 23KT 4005 7351 3882 7440
HAIL...0.00IN
WIND...40KTS
$$
CMS373
FZUS71 KPHI 222042
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
342 PM EST Mon Feb 22 2021
ANZ450-222051-
/O.CAN.KPHI.MA.W.0003.000000T0000Z-210222T2115Z/
342 PM EST Mon Feb 22 2021
...THE SPECIAL MARINE WARNING IS CANCELLED...
The affected areas were...
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm...
The showers have moved out of the warned area and no longer pose a
significant threat to boaters.
LAT...LON 3905 7368 3882 7392 3868 7415 3879 7458
4017 7357 3986 7333 3960 7332
TIME...MOT...LOC 2041Z 280DEG 23KT 4003 7336 3880 7425
$$
ANZ451>454-470>473-475-222115-
/O.CON.KPHI.MA.W.0003.000000T0000Z-210222T2115Z/
342 PM EST Mon Feb 22 2021
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 415 PM EST...
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...
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20
nm...
Waters from Cape May NJ to Fenwick Island DE out 20 to 40 nm...
Waters from Great Egg Inlet NJ to Cape May NJ out 20 to 40 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 341 PM EST, showers were located along a line extending from 15 nm
southwest of Buoy 44025 to 11 nm south of Deepwater Reef, moving
east at 25 knots. Strong winds will occur well behind the main line
of showers.
HAZARD...Wind gusts to 40 knots.
SOURCE...Radar indicated.
IMPACT...Small craft could be damaged in briefly higher winds and
suddenly higher waves.
Locations impacted include...
28-Mile Wreck and Deepwater Reef.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to safe harbor immediately as gusty winds and high waves are
expected.
&&
LAT...LON 3905 7368 3882 7392 3868 7415 3879 7458
4017 7357 3986 7333 3960 7332
TIME...MOT...LOC 2041Z 280DEG 23KT 4003 7336 3880 7425
HAIL...0.00IN
WIND...40KTS
$$
CMS843
FZUS71 KPHI 222114
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
414 PM EST Mon Feb 22 2021
ANZ451>454-470>473-475-222123-
/O.EXP.KPHI.MA.W.0003.000000T0000Z-210222T2115Z/
414 PM EST Mon Feb 22 2021
...THE SPECIAL MARINE WARNING WILL EXPIRE AT 415 PM EST...
The affected areas were...
Coastal waters from Manasquan Inlet NJ to Cape Henlopen DE out 20
nm...
Outer waters from Sandy Hook NJ to Fenwick Island DE out 20 to 40
nm...
The showers have moved out of the area and no longer pose a
significant threat to boaters.
LAT...LON 3905 7368 3882 7392 3868 7415 3879 7458
4017 7357 3986 7333 3960 7332
TIME...MOT...LOC 2113Z 280DEG 23KT 3999 7310 3877 7399
$$
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 2:32 PM EST | Special Marine Warning | PHI | 118 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.