Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

July 1, 2012Atlantic County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 1, 2012, 9:51 PM EDT for Atlantic County, New Jersey. It was in force for 24 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
Jul 1, 2012, 9:51 PM EDT (01:51 UTC)
Expired
Jul 1, 2012, 10:15 PM EDT
In force
24 min
Issued by
NWS Philadelphia/Mount Holly

County Atlantic County, NJ

The radar

The Philadelphia radar (KDIX), 78 km from the middle of the area, began a volume at 01:52 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 1, 10:10 PM EDTHAIL 0.75Upper Twp, NJPEA TO PENNY SIZE HAIL REPORTED IN UPPER TOWNSHIP.
Jul 1, 10:20 PM EDTHAIL 1Ocean City, NJ
Jul 1, 10:25 PM EDTHAIL 0.75Seaville, NJ

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, 1.9 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.

Skew-T log-pSkew-T log-p diagram, Wallops Is Stn, VA at 00:00Z on 2012-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2151 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 2012-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.19395878Sfc1 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
2151 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1820 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
85 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.7

Open this sounding in Storm Lab

The text

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

111 
WWUS81 KPHI 020151
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
951 PM EDT SUN JUL 1 2012

NJZ022>025-020215-
ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-CAPE MAY NJ-
COASTAL ATLANTIC NJ-
951 PM EDT SUN JUL 1 2012

...A DEVELOPING THUNDERSTORM WILL AFFECT ATLANTIC AND CAPE MAY
COUNTIES...

AT 948 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
DEVELOPING THUNDERSTORM ABOUT 15 MILES SOUTHEAST OF MILLVILLE...MOVING
SOUTHEAST AT 30 MPH. THE THUNDERSTORM WILL BE NEAR CORBIN CITY...
SEAVILLE AROUND 1000 PM...MARMORA AND BEESLEYS POINT AROUND 1015 PM.

WIND GUSTS TO 50 MPH...SMALL HAIL AND DANGEROUS CLOUD TO GROUND LIGHTNING
ARE POSSIBLE WITH THIS STORM. IF YOU HEAR THUNDER...PLEASE MOVE INDOORS. 

LAT...LON 3929 7454 3927 7456 3925 7460 3913 7470
      3923 7490 3929 7489 3933 7486 3934 7487
      3941 7484 3932 7450

$$

MPD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 8:16 PM EDTSpecial Weather StatementPHIOcean44 min
Jul 1, 8:33 PM EDTSevere Thunderstorm WarningPHIOcean57 min
Jul 1, 8:39 PM EDTSpecial Marine WarningPHI66 min
Jul 1, 9:45 PM EDTSpecial Marine WarningPHI2 hr
Jul 1, 9:58 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May62 min
Jul 1, 10:04 PM EDTSpecial Marine WarningPHI116 min
Jul 2, 2:56 PM EDTCoastal Flood StatementPHIAtlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more7 hr
Jul 2, 4:13 AM EDTSpecial Weather StatementPHIKent, Sussex62 min

Nearby

Special Weather Statements in New Jersey, 2012Every special weather statement in 2012

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.