Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

May 18, 2011Atlantic County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at May 18, 2011, 12:39 PM EDT for Atlantic County, Ocean County, New Jersey. It was in force for 66 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 18, 2011, 12:39 PM EDT (16:39 UTC)
Expired: May 18, 2011, 1:45 PM EDT
In force: 66 min
Issued by: NWS Philadelphia/Mount Holly

Counties Atlantic County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 45 km from the middle of the area, began a volume at 16:40 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.7 hours before the alert went out and 150 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: 79 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 561 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 169 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

036 
WWUS81 KPHI 181639
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1239 PM EDT WED MAY 18 2011

NJZ018>020-022-024>027-181745-
ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-CAMDEN NJ-
COASTAL ATLANTIC NJ-COASTAL OCEAN NJ-NORTHWESTERN BURLINGTON NJ-
OCEAN NJ-SOUTHEASTERN BURLINGTON NJ-
1239 PM EDT WED MAY 18 2011

...A STRONG THUNDERSTORM WILL AFFECT ATLANTIC...BURLINGTON...
CAMDEN...CAPE MAY AND OCEAN COUNTIES...

AT 1234 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES EAST OF ATLANTIC CITY...MOVING NORTH AT
35 MPH. THE THUNDERSTORM WILL BE NEAR ABSECON...PLEASANTVILLE AROUND
1245 PM...POMONA AROUND 1250 PM...BEACH HAVEN AROUND 1255 PM...MYSTIC
ISLAND...PORT REPUBLIC...NORTH BEACH HAVEN AROUND 100 PM...
TUCKERTON...NEW GRETNA AND SHIP BOTTOM AROUND 105 PM.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

EXPECT INTENSE LIGHTNING FROM THIS STORM. DO NOT SEEK SHELTER UNDER
TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN A THUNDERSTORM
APPROACHES.

LAT...LON 3981 7407 3965 7414 3950 7428 3950 7433
      3953 7434 3953 7440 3949 7438 3949 7432
      3945 7429 3935 7441 3929 7452 3930 7454
      3928 7455 3982 7494 3997 7405

$$

ROBERTSON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 4:00 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more	25 hr
May 18, 1:01 PM EDT	Special Weather Statement	PHI	Mercer	59 min
May 18, 2:14 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Somerset	4 hr
May 18, 2:45 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	6 hr
May 18, 4:12 PM EDT	River Flood Warning	PHI	Morris	32 hr
May 18, 4:12 PM EDT	River Flood Warning	PHI	Morris	72 hr
May 18, 4:13 PM EDT	River Flood Warning	PHI	Morris, Passaic	36 hr
May 18, 4:34 PM EDT	Flash Flood Warning	PHI	Morris, Sussex, Warren	4 hr
May 18, 1:52 PM EDT	Tornado Warning	PHI	Bucks, Montgomery, Philadelphia	24 min
May 18, 3:05 PM EDT	Areal Flood Advisory	PHI	Bucks, Montgomery	115 min
May 18, 2:29 PM EDT	Special Weather Statement	PHI	Talbot	61 min
May 18, 2:39 PM EDT	Tornado Warning	PHI	Queen Anne's, Talbot	51 min
May 18, 3:22 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Queen Anne's, Talbot	47 min
May 18, 4:01 PM EDT	Coastal Flood Statement	PHI	Kent, Queen Anne's, Talbot	5 hr

Nearby

Special Weather Statements in New Jersey, 2011 Every special weather statement in 2011

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.