Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

July 29, 2011Atlantic County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 29, 2011, 8:57 PM EDT for Atlantic County, New Jersey. It was in force for 63 min. 1 report 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
Jul 29, 2011, 8:57 PM EDT (00:57 UTC)
Expired
Jul 29, 2011, 10:00 PM EDT
In force
63 min
Issued by
NWS Philadelphia/Mount Holly

County Atlantic County, NJ

The radar

The Philadelphia radar (KDIX), 52 km from the middle of the area, began a volume at 00:58 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

TimeReportWhereRemark
Jul 29, 9:36 PM EDTTSTM WND DMGPort Republic, NJTREES WIRES DOWN

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, 1.0 hours before the alert went out and 191 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-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2011-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 809 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2011-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 48 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
809 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
1692 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
48 m²/s²
0-3 km storm-relative helicity
103 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.

089 
WWUS81 KPHI 300057
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
857 PM EDT FRI JUL 29 2011

NJZ017>020-022-025>027-300200-
ATLANTIC NJ-CAMDEN NJ-COASTAL ATLANTIC NJ-COASTAL OCEAN NJ-
GLOUCESTER NJ-NORTHWESTERN BURLINGTON NJ-OCEAN NJ-
SOUTHEASTERN BURLINGTON NJ-
857 PM EDT FRI JUL 29 2011

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

AT 854 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 19 MILES NORTH OF VINELAND...MOVING SOUTHEAST AT
30 MPH. THE THUNDERSTORM WILL BE NEAR HAMMONTON...ELWOOD-MAGNOLIA
AROUND 915 PM...EGG HARBOR CITY...MAYS LANDING AROUND 930 PM...
POMONA...ABSECON AROUND 945 PM...ATLANTIC CITY AND BRIGANTINE AROUND
1000 PM.

VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

LAT...LON 3937 7440 3936 7440 3929 7452 3930 7455
      3966 7505 3989 7480 3954 7436 3953 7440
      3950 7440 3949 7434 3951 7433 3949 7432
      3947 7429 3945 7429

$$

HAYES

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 8:01 PM EDTSpecial Weather StatementPHIBurlington, Mercer, Ocean59 min
Jul 29, 8:21 PM EDTSpecial Marine WarningPHI84 min
Jul 29, 8:27 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean18 min
Jul 29, 8:34 PM EDTSevere Thunderstorm WarningPHIBurlington, Ocean44 min
Jul 29, 9:13 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Ocean62 min
Jul 29, 9:15 PM EDTSpecial Marine WarningPHI60 min
Jul 29, 9:34 PM EDTSpecial Marine WarningPHI56 min
Jul 29, 10:31 PM EDTSpecial Marine WarningPHI59 min
Jul 30, 4:15 PM EDTCoastal Flood StatementPHIAtlantic, Cape May, Ocean7 hr

Nearby

Special Weather Statements in New Jersey, 2011Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.