Alert archive / New Jersey / Special Marine Warnings in 2021
Special Marine Warning 48, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Jun 19, 2021, 5:46 PM EDT. It was in force for 32 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
- Jun 19, 2021, 5:46 PM EDT (21:46 UTC)
- Expired
- Jun 19, 2021, 6:18 PM EDT
- In force
- 32 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), 36 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 162 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
- 10 J/kg
- Mixed-layer CIN
- -293 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 254 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
882
WHUS51 KPHI 192146
SMWPHI
ANZ451-452-470-471-192245-
/O.NEW.KPHI.MA.W.0048.210619T2146Z-210619T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
546 PM EDT Sat Jun 19 2021
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Coastal waters from Manasquan Inlet to Great Egg Inlet NJ out 20
nm...
Outer waters from Sandy Hook to Little Egg Inlet NJ out 20 to 40
nm...
* Until 645 PM EDT.
* At 545 PM EDT, a strong thunderstorm was located 7 nm west of
Forked River, moving east at 35 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, Little Egg Reef, Ship Bottom, Barnegat Light Reef,
Garden State South Reef, Harvey Cedars, Forked River, Lavallette,
Beach Haven, Barnegat Light, North Beach Haven, Garden State North
Reef, Little Egg Inlet, Seaside Park and Pine Beach.
LAT...LON 3935 7383 3946 7428 3958 7443 3960 7459
3962 7455 3960 7439 3970 7426 3982 7427
3990 7420 3993 7425 3997 7424 4001 7373
4000 7371 4001 7370 4002 7361 3972 7354
TIME...MOT...LOC 2145Z 275DEG 35KT 3977 7431
HAIL...0.00IN
WIND...>34KTS
$$
NC1 follow-up statement
040
FZUS71 KPHI 192218
MWSPHI
Marine Weather Statement
National Weather Service Mount Holly NJ
618 PM EDT Sat Jun 19 2021
ANZ451-452-470-471-192226-
/O.CAN.KPHI.MA.W.0048.000000T0000Z-210619T2245Z/
618 PM EDT Sat Jun 19 2021
...THE SPECIAL MARINE WARNING IS CANCELLED...
The affected areas were...
Coastal waters from Manasquan Inlet to Great Egg Inlet NJ out 20
nm...
Outer waters from Sandy Hook to Little Egg Inlet NJ out 20 to 40
nm...
The thunderstorm has weakened and no longer poses a significant
threat to boaters.
LAT...LON 3935 7383 3946 7428 3958 7443 3960 7459
3962 7455 3960 7439 3970 7426 3982 7427
3990 7420 3993 7425 3997 7424 4001 7373
4000 7371 4001 7370 4002 7361 3972 7354
TIME...MOT...LOC 2215Z 275DEG 35KT 3975 7392
$$
NCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 3:54 AM EDT | Special Weather Statement | PHI | Hunterdon | 36 min |
| Jun 19, 5:17 PM EDT | Special Weather Statement | PHI | Ocean | 28 min |
| Jun 19, 5:40 PM EDT | Special Weather Statement | PHI | Ocean | 35 min |
| Jun 19, 5:59 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 2 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.