Alert archive / New Jersey / Special Marine Warnings in 2006

Special Marine Warning 21, NWS Philadelphia/Mount Holly

May 11, 2006

NWS Philadelphia/Mount Holly issued this special marine warning at May 11, 2006, 10:49 PM EDT. It was in force for 86 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: May 11, 2006, 10:49 PM EDT (02:49 UTC)
Expired: May 12, 2006, 12:15 AM EDT
In force: 86 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

The radar

The Dover AFB radar (KDOX), 44 km from the middle of the area, began a volume at 02:50 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.8 hours before the alert went out and 120 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: 74 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 510 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WHUS51 KPHI 120252
SMWPHI
ANZ430-431-453>455-120415-
/O.NEW.KPHI.MA.W.0021.060512T0249Z-060512T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1049 PM EDT THU MAY 11 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SPECIAL MARINE WARNING FOR...
  FROM CAPE HENLOPEN TO FENWICK ISLAND, DE OUT 20 NM OVER ATLANTIC
  COASTAL WATERS
  FROM CAPE MAY NJ TO CAPE HENLOPEN, DE OUT 20 NM OVER ATLANTIC
  COASTAL WATERS
  FROM GREAT EGG INLET TO CAPE MAY, NJ OUT 20 NM OVER ATLANTIC
  COASTAL WATERS
  DELAWARE BAY WATERS SOUTH OF EAST POINT, NJ TO SLAUGHTER BEACH, DE
  OVER ATLANTIC COASTAL WATERS
  DELAWARE BAY WATERS NORTH OF EAST POINT, NJ TO SLAUGHTER BEACH, DE
  OVER ATLANTIC COASTAL WATERS
  INCLUDING CAPE HENLOPEN...REHOBOTH BEACH...CAPE MAY POINT...EAST
  POINT...FORTESQUE BEACH...SEA ISLE CITY AND WILDWOOD

* UNTIL 1215 AM EDT

* AT 1045 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  AN AREA OF THUNDERSTORM...PRODUCING STRONG WINDS OVER 35 KNOTS     
  OVER SOUTHERN DELAWARE...MOVING NORTHEAST AT 40 MPH.

* THIS STRONG THUNDERSTORM WILL BE OVER
  DELAWARE BAY AND OFF THE COAST OF DELAWARE THROUGH 1130 PM AND
  OFF THE SOUTHERN NEW JERSEY COAST THROUGH 1215 AM. 

MARINERS CAN EXPECT GUSTY WINDS...HIGH WAVES...DANGEROUS LIGHTNING...
AND HEAVY RAINS. BOATERS SHOULD SEEK SAFE HARBOR IMMEDIATELY...UNTIL
THIS STORM PASSES.

LAT...LON 3920 7540 3879 7511 3848 7502 3838 7476
      3864 7474 3905 7435 3929 7460 3895 7494
      3915 7491 3931 7532

$$

OHARA

Nearby

Special Marine Warnings in New Jersey, 2006 Every special marine warning in 2006

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.