Alert archive / New Jersey / Special Weather Statements in 2012

Special Weather Statement, NWS Philadelphia/Mount Holly

January 27, 2012Gloucester County, Salem County, New Jersey; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this special weather statement at Jan 27, 2012, 10:31 AM EST for Gloucester County, Salem County, New Jersey; New Castle County, Delaware. It was in force for 29 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
Jan 27, 2012, 10:31 AM EST (15:31 UTC)
Expired
Jan 27, 2012, 11:00 AM EST
In force
29 min
Issued by
NWS Philadelphia/Mount Holly

Counties New Castle County, DE, Gloucester County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 72 km from the middle of the area, began a volume at 15:32 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 12:00Z, 3.5 hours before the alert went out and 172 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 12:00Z on 2012-01-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 12:00Z on 2012-01-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 323 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
601 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
323 m²/s²
0-3 km storm-relative helicity
319 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

930 
WWUS81 KPHI 271531
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1031 AM EST FRI JAN 27 2012

DEZ001-002-MDZ008-012-015-NJZ016>018-021-022-271600-
ATLANTIC NJ-CAMDEN NJ-CECIL MD-CUMBERLAND NJ-GLOUCESTER NJ-KENT DE-
KENT MD-NEW CASTLE DE-QUEEN ANNE'S MD-SALEM NJ-
1031 AM EST FRI JAN 27 2012

...SHOWERS WITH EMBEDDED THUNDERSTORMS...ALONG WITH HEAVY RAINFALL 
WILL AFFECT CAMDEN...GLOUCESTER...NEW CASTLE...CECIL...KENT...QUEEN 
ANNE'S...ATLANTIC...SALEM AND CUMBERLAND COUNTIES...

AT 1028 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
SHOWERS WITH EMBEDDED LIGHTNING AND HEAVY RAINFALL ALONG A LINE 
EXTENDING FROM 9 MILES SOUTHWEST OF CAMDEN TO 16 MILES SOUTH OF 
MIDDLETOWN...MOVING NORTHEAST AT 65 MPH. THE SHOWERS WILL BE NEAR 
BELLMAWR...HADDON HEIGHTS...MOUNT EPHRAIM...AUDUBON AROUND 1035 
AM...SOMERDALE...MAGNOLIA...LAWNSIDE...GLENDORA AROUND 1040 
AM...WOODLAND BEACH AND TURNERSVILLE AROUND 1045 AM.

A BRIEF PERIOD OF HEAVY RAIN WILL FALL FROM THESE SHOWERS...AND WILL 
CAUSE WATER TO POND ON ROADS AND QUICKLY FILL ROADSIDE DITCHES AND 
SMALL STREAMS.

IN ADDITION TO THE HEAVY RAIN...WIND GUSTS TO 40 MPH ARE POSSIBLE 
WITH THESE SHOWERS.

LAT...LON 3956 7580 3968 7554 3965 7554 3969 7552
      3991 7505 3947 7487 3930 7532 3934 7534
      3935 7539 3943 7547 3946 7555 3950 7556
      3946 7558 3932 7543 3927 7541 3906 7600

$$

ROBERTSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 27, 4:54 AM ESTGale WarningPHI20 hr
Jan 27, 8:27 AM ESTSpecial Weather StatementPHIGloucester, Salem93 min
Jan 27, 9:38 AM ESTSpecial Marine WarningPHI82 min
Jan 27, 10:27 AM ESTSpecial Marine WarningPHI63 min
Jan 27, 11:06 AM ESTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Ocean54 min
Jan 27, 2:15 PM ESTWind AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more6 hr
Jan 27, 9:34 AM ESTSpecial Weather StatementPHIKent, New Castle56 min

Nearby

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