Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

August 7, 2011Mercer County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 7, 2011, 3:25 PM EDT for Mercer County, New Jersey. It was in force for 35 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 7, 2011, 3:25 PM EDT (19:25 UTC)
Expired
Aug 7, 2011, 4:00 PM EDT
In force
35 min
Issued by
NWS Philadelphia/Mount Holly

County Mercer County, NJ

The radar

The Philadelphia radar (KDIX), 34 km from the middle of the area, began a volume at 19:28 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

Brookhaven, NY (KOKX), launched 12:00Z, 7.4 hours before the alert went out and 178 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, Brookhaven, NY at 12:00Z on 2011-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 496 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2011-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 194 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
496 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
484 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
194 m²/s²
0-3 km storm-relative helicity
238 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

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

285 
WWUS81 KPHI 071925
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
325 PM EDT SUN AUG 7 2011

NJZ013-015-019-020-027-PAZ068-069-071-072000-
BUCKS PA-MERCER NJ-MONTGOMERY PA-NORTHWESTERN BURLINGTON NJ-OCEAN NJ-
PHILADELPHIA PA-SOUTHEASTERN BURLINGTON NJ-WESTERN MONMOUTH NJ-
325 PM EDT SUN AUG 7 2011

...STRONG THUNDERSTORMS WILL AFFECT BUCKS...BURLINGTON...MERCER...
MONMOUTH...MONTGOMERY...OCEAN AND PHILADELPHIA COUNTIES...

AT 320 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
GROUP OF INTENSIFYING SHOWERS AND ISOLATED STRONG THUNDERSTORMS 
ALONG A LINE EXTENDING FROM 14 MILES NORTH OF PHILADELPHIA TO 11 
MILES SOUTHWEST OF TRENTON TO 13 MILES EAST OF CAMDEN...MOVING EAST 
AT 25 MPH. THE THUNDERSTORMS WILL BE NEAR VILLAGE 
SHIRES...LUMBERTON...LANGHORNE...LANGHORN AROUND 330 
PM...NEWTOWN...JACKSONVILLE...TULLYTOWN...LEVITTOWN AROUND 335 
PM...WOODSIDE AND JOBSTOWN AROUND 340 PM.

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

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS AS WELL AS 
LIGHTNING STRIKES.

LAT...LON 4030 7463 4012 7446 3992 7443 3996 7494
      4007 7498 4022 7510

$$

FORECASTER: DRAG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 8:49 PM EDTFlood WatchPHIMorris, Sussex, Warren9 hr
Aug 6, 10:33 PM EDTAreal Flood AdvisoryPHIWarren6 hr
Aug 7, 12:42 AM EDTSpecial Weather StatementPHIMorris63 min
Aug 7, 1:32 AM EDTAreal Flood AdvisoryPHIHunterdon, Warren3 hr
Aug 7, 1:54 AM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Sussex, Warren3 hr
Aug 7, 3:56 AM EDTSpecial Weather StatementPHIHunterdon64 min
Aug 7, 4:45 AM EDTSpecial Weather StatementPHIHunterdon, Somerset60 min
Aug 7, 5:10 AM EDTAreal Flood AdvisoryPHIMorris, Somerset81 min
Aug 7, 5:30 AM EDTSpecial Weather StatementPHIMercer, Middlesex60 min
Aug 7, 6:03 AM EDTFlash Flood WatchPHISussex, Warren14 hr
Aug 7, 3:34 PM EDTSpecial Weather StatementPHIWarren26 min
Aug 7, 3:48 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Monmouth, Ocean27 min
Aug 7, 4:19 PM EDTSpecial Weather StatementPHIMonmouth41 min
Aug 7, 5:02 PM EDTSpecial Weather StatementPHISussex28 min
Aug 7, 6:49 PM EDTSpecial Weather StatementPHISussex41 min
Aug 7, 7:11 PM EDTSpecial Weather StatementPHISussex49 min
Aug 7, 7:35 PM EDTSpecial Weather StatementPHISussex25 min
Aug 6, 10:06 PM EDTSpecial Weather StatementPHIBerks84 min
Aug 6, 10:14 PM EDTSpecial Weather StatementPHIPike61 min
Aug 7, 12:48 AM EDTSpecial Weather StatementPHIMontgomery57 min
Aug 7, 2:29 AM EDTFlash Flood WarningPHIBerks, Lehigh, Northampton3 hr
Aug 7, 3:07 PM EDTSpecial Weather StatementPHIPhiladelphia23 min
Aug 7, 7:20 PM EDTSpecial Weather StatementPHIMonroe40 min
Aug 7, 3:02 PM EDTSpecial Weather StatementPHICecil28 min
Aug 7, 4:50 PM EDTSpecial Weather StatementPHICecil40 min
Aug 7, 5:39 PM EDTSpecial Weather StatementPHICecil36 min
Aug 7, 6:31 PM EDTSpecial Weather StatementPHIKent29 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.