Alert archive / New Jersey / Special Marine Warnings in 2016

Special Marine Warning 13, NWS Philadelphia/Mount Holly

April 2, 2016

NWS Philadelphia/Mount Holly issued this special marine warning at Apr 2, 2016, 11:40 PM EDT. It was in force for 65 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: Apr 2, 2016, 11:40 PM EDT (03:40 UTC)
Expired: Apr 3, 2016, 12:45 AM EDT
In force: 65 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

The radar

The Dover AFB radar (KDOX), 67 km from the middle of the area, began a volume at 03:42 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
Apr 3, 12:20 AM EDT	TSTM WND DMG	Dennisville, NJ	TREES DOWN.
Apr 3, 12:20 AM EDT	TSTM WND DMG	Dennisville, NJ	TREES DOWN AND SHINGLES OFF OF HOME. A 32-FOOT CAMPER FLIPPED OVER. WIND GUST MEASURED TO 71 MPH.
Apr 3, 12:20 AM EDT	TSTM WND GST 71	Dennisville, NJ	71 MPH WIND GUST MEASURED ON HOME DAVIS WEATHER STATION.

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 00:00Z, 3.7 hours before the alert went out and 156 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 695 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: -66 m²/s²
0-3 km storm-relative helicity: -117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

652 
WHUS51 KPHI 030340
SMWPHI
ANZ430-431-451>453-471-030445-
/O.NEW.KPHI.MA.W.0013.160403T0340Z-160403T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1140 PM EDT SAT APR 2 2016

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SPECIAL MARINE WARNING FOR...
  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...
  DELAWARE BAY WATERS NORTH OF EAST POINT NJ TO SLAUGHTER BEACH DE...
  DELAWARE BAY WATERS SOUTH OF EAST POINT NJ TO SLAUGHTER BEACH DE...
  WATERS FROM MANASQUAN INLET NJ TO LITTLE EGG INLET NJ OUT 20 TO 40
  NM...

* UNTIL 1245 AM EDT

* AT 1139 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS
  CAPABLE OF PRODUCING WINDS TO NEARLY 50 KNOTS AND SMALL HAIL. THESE
  STORMS WERE LOCATED ALONG A LINE EXTENDING FROM NEAR SHIP JOHN
  SHOAL LIGHT TO 6 NM NORTHWEST OF BOWERS BEACH TO 17 NM NORTHWEST OF
  SLAUGHTER BEACH...MOVING EAST AT 60 TO 70 KNOTS.

* STRONG THUNDERSTORMS WILL BE NEAR...
  SEA BREEZE AND SHIP JOHN SHOAL LIGHT AROUND 1145 PM EDT. 
  CROSS LEDGE LIGHT AROUND 1150 PM EDT. 
  MIAH MAULL LIGHT...FORTESQUE BEACH AND FOURTEEN FOOT BANK LIGHT 
  AROUND 1155 PM EDT. 
  EAST POINT AROUND 1205 AM EDT. 
  THE LUMP AND SEA ISLE CITY AROUND 1220 AM EDT. 
  GREAT EGG INLET...ATLANTIC CITY AND OCEAN CITY REEF AROUND 1225 AM 
  EDT. 
  LITTLE EGG REEF AND GREAT EGG REEF AROUND 1230 AM EDT. 
  ATLANTIC CITY REEF AROUND 1235 AM EDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AS THUNDERSTORMS MOVE OVER THE WATER...BOATERS CAN EXPECT GUSTY WINDS
AND HIGH WAVES. MOVE TO SAFE HARBOR OR STAY CLOSE TO SHORE UNTIL
THESE STORMS PASS.

MARINERS CAN EXPECT WIND GUSTS TO NEARLY 50 KNOTS...SMALL HAIL...HIGH
WAVES...DANGEROUS LIGHTNING...AND HEAVY RAINS. BOATERS SHOULD SEEK SAFE
HARBOR IMMEDIATELY...UNTIL THESE STORMS PASS.

&&

LAT...LON 3934 7533 3932 7532 3912 7472 3929 7521
      3928 7518 3925 7500 3932 7523 3918 7471
      3929 7455 3934 7528 3935 7508 3936 7447
      3931 7453 3972 7377 3905 7434 3900 7533
      3925 7552
TIME...MOT...LOC 0339Z 255DEG 69KT 3927 7544 3914 7550 3904 7565 

$$

DRAG

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 2, 9:45 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Mercer and 4 more	2 hr
Apr 2, 10:02 PM EDT	Special Weather Statement	PHI	Gloucester, Salem	88 min
Apr 2, 10:08 PM EDT	Special Weather Statement	PHI	Cumberland	37 min
Apr 2, 10:27 PM EDT	Special Weather Statement	PHI	Atlantic, Cumberland	33 min
Apr 2, 10:51 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	39 min
Apr 2, 11:02 PM EDT	Special Marine Warning	PHI		88 min
Apr 2, 11:09 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester, Mercer, Salem	51 min
Apr 2, 11:24 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	51 min
Apr 2, 11:56 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset	34 min
Apr 3, 12:08 AM EDT	Special Weather Statement	PHI	Cape May	22 min
Apr 3, 12:14 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Ocean	31 min
Apr 3, 12:19 AM EDT	Special Weather Statement	PHI	Union	26 min
Apr 3, 12:23 AM EDT	Special Marine Warning	PHI		52 min
Apr 3, 12:30 AM EDT	Special Marine Warning	PHI		60 min
Apr 3, 12:39 AM EDT	Special Weather Statement	PHI	Monmouth	21 min
Apr 3, 12:46 AM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	14 min
Apr 3, 12:52 AM EDT	Special Weather Statement	PHI	Ocean	8 min
Apr 3, 1:12 AM EDT	Special Marine Warning	PHI		33 min
Apr 3, 5:45 AM EDT	Low Water Advisory	PHI		9 hr
Apr 3, 11:34 AM EDT	Wind Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	4 hr
Apr 3, 11:37 AM EDT	Gale Warning	PHI		4 hr
Apr 3, 3:07 PM EDT	Low Water Advisory	PHI		113 min
Apr 3, 3:40 PM EDT	Freeze Watch	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more	12 hr
Apr 3, 3:54 PM EDT	Gale Watch	PHI		12 hr
Apr 3, 3:54 PM EDT	Small Craft Advisory	PHI		5 hr

Nearby

Special Marine Warnings in New Jersey, 2016 Every special marine warning in 2016

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.