Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

August 5, 20126 counties in New Jersey; Kent County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 5, 2012, 9:17 PM EDT for 6 counties in New Jersey; Kent County, Delaware. It was in force for 58 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: Aug 5, 2012, 9:17 PM EDT (01:17 UTC)
Expired: Aug 5, 2012, 10:15 PM EDT
In force: 58 min
Issued by: NWS Philadelphia/Mount Holly

Counties Kent County, DE, Atlantic County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 60 km from the middle of the area, began a volume at 01:18 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, 1.3 hours before the alert went out and 155 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: 1399 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 983 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 60 m²/s²
0-3 km storm-relative helicity: 95 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

599 
WWUS81 KPHI 060117
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
917 PM EDT SUN AUG 5 2012

DEZ002-NJZ016>019-021>024-027-060215-
ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-CAMDEN NJ-CAPE MAY NJ-
CUMBERLAND NJ-GLOUCESTER NJ-KENT DE-NORTHWESTERN BURLINGTON NJ-
SALEM NJ-SOUTHEASTERN BURLINGTON NJ-
917 PM EDT SUN AUG 5 2012

...STRONG THUNDERSTORMS WILL AFFECT ATLANTIC...BURLINGTON...CAMDEN...
CAPE MAY...CUMBERLAND...GLOUCESTER...KENT AND SALEM COUNTIES...

AT 914 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 12 MILES SOUTHWEST
OF CAMDEN TO 17 MILES WEST OF MILLVILLE TO 5 MILES SOUTHEAST OF
DOVER...MOVING EAST AT 30 MPH. THE THUNDERSTORMS WILL BE NEAR MULLICA
HILL AROUND 915 PM...WOODBURY HEIGHTS...DEPTFORD AROUND 930 PM...
LINDENWOLD...LAUREL SPRINGS AROUND 945 PM...WEYMOUTH...ATSION AROUND
1000 PM...SHAMONG AND GOSHEN AROUND 1015 PM.

VERY HEAVY RAIN WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO
POND ON ROADS AND QUICKLY FILL POOR DRAINAGE AREAS.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. DO
NOT SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS
WHEN A THUNDERSTORM APPROACHES.

LAT...LON 3915 7468 3904 7476 3904 7495 3916 7490
      3921 7505 3920 7511 3917 7514 3929 7527
      3925 7539 3912 7540 3903 7536 3903 7555
      3934 7548 3926 7539 3929 7530 3942 7547
      3985 7535 3985 7526 3988 7519 3986 7452

$$

FORECASTER: HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 9:48 PM EDT	Special Weather Statement	PHI	Burlington, Mercer, Monmouth	57 min
Aug 5, 10:00 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Monmouth, Ocean	60 min
Aug 5, 10:14 PM EDT	Special Marine Warning	PHI		2 hr
Aug 5, 10:42 PM EDT	Special Weather Statement	PHI	Monmouth	48 min
Aug 5, 10:47 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	43 min
Aug 5, 11:02 PM EDT	Special Weather Statement	PHI	Ocean	58 min
Aug 5, 11:25 PM EDT	Special Marine Warning	PHI		65 min
Aug 5, 11:31 PM EDT	Areal Flood Advisory	PHI	Salem	3 hr
Aug 5, 11:42 PM EDT	Special Weather Statement	PHI	Gloucester, Salem	63 min
Aug 6, 12:00 AM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester	60 min
Aug 6, 12:38 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more	3 hr
Aug 6, 12:46 AM EDT	Special Weather Statement	PHI	Burlington, Camden, Ocean	59 min
Aug 6, 1:09 AM EDT	Special Weather Statement	PHI	Atlantic	66 min
Aug 6, 1:36 AM EDT	Special Marine Warning	PHI		54 min
Aug 6, 2:23 AM EDT	Special Weather Statement	PHI	Atlantic	67 min
Aug 6, 3:32 AM EDT	Special Weather Statement	PHI	Atlantic, Cumberland	58 min
Aug 6, 5:21 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Cumberland, Gloucester, Ocean	113 min
Aug 5, 10:50 PM EDT	Special Weather Statement	PHI	New Castle	55 min

Nearby

Special Weather Statements in New Jersey, 2012 Special Weather Statements in Delaware, 2012 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.