Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

May 4, 2011Cape May County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at May 4, 2011, 8:47 AM EDT for Cape May County, New Jersey. 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
May 4, 2011, 8:47 AM EDT (12:47 UTC)
Expired
May 4, 2011, 9:45 AM EDT
In force
58 min
Issued by
NWS Philadelphia/Mount Holly

County Cape May County, NJ

The radar

The Philadelphia radar (KDIX), 66 km from the middle of the area, began a volume at 12:48 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, 0.8 hours before the alert went out and 139 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, Phillips Aaf/Abe, MD at 12:00Z on 2011-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2011-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -92 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
551 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
-92 m²/s²
0-3 km storm-relative helicity
148 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.

740 
WWUS81 KPHI 041247
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
847 AM EDT WED MAY 4 2011

NJZ020-022>027-041345-
ATLANTIC NJ-ATLANTIC COASTAL CAPE MAY NJ-CAPE MAY NJ-
COASTAL ATLANTIC NJ-COASTAL OCEAN NJ-OCEAN NJ-
SOUTHEASTERN BURLINGTON NJ-
847 AM EDT WED MAY 4 2011

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

AT 844 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTHEAST OF CAPE MAY...MOVING NORTHEAST
AT 45 MPH. THE THUNDERSTORM WILL BE NEAR SEA ISLE CITY...STRATHMERE
AROUND 900 AM...OCEAN CITY...PLEASANTVILLE AROUND 915 AM...TUCKERTON
AND MYSTIC ISLAND AROUND 930 AM.

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 3950 7428 3953 7440 3949 7438 3949 7432
      3945 7429 3935 7441 3930 7455 3920 7464
      3907 7471 3902 7479 3899 7479 3894 7487
      3899 7497 3908 7492 3968 7442 3960 7427
      3957 7431 3952 7429 3959 7426 3957 7421

$$

HAYES

The office that day

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

IssuedProductOfficeCountiesLasted
May 3, 8:47 PM EDTSpecial Weather StatementPHIWarren58 min
May 3, 9:43 PM EDTSpecial Weather StatementPHISussex, Warren47 min
May 4, 7:34 AM EDTSpecial Weather StatementPHIAtlantic, Cape May56 min
May 4, 7:58 AM EDTSpecial Weather StatementPHIBurlington, Camden, Ocean62 min
May 4, 8:31 AM EDTSpecial Weather StatementPHIAtlantic, Cape May59 min
May 4, 9:09 AM EDTSpecial Marine WarningPHI66 min
May 4, 10:13 AM EDTSpecial Marine WarningPHI62 min
May 4, 11:06 AM EDTSpecial Marine WarningPHI54 min
May 4, 11:27 AM EDTSmall Craft AdvisoryPHI4 hr
May 4, 3:29 PM EDTSmall Craft AdvisoryPHI27 hr
May 3, 8:06 PM EDTSpecial Weather StatementPHICarbon39 min
May 3, 8:15 PM EDTSevere Thunderstorm WarningPHICarbon, Monroe30 min
May 4, 7:48 AM EDTSpecial Weather StatementPHISussex57 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.