Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

August 7, 2011Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 7, 2011, 3:34 PM EDT for Warren County, New Jersey. It was in force for 26 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, 3:34 PM EDT (19:34 UTC)
Expired: Aug 7, 2011, 4:00 PM EDT
In force: 26 min
Issued by: NWS Philadelphia/Mount Holly

County Warren County, NJ

The radar

The Philadelphia radar (KDIX), 142 km from the middle of the area, began a volume at 19:37 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, 7.6 hours before the alert went out and 185 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: 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.

734 
WWUS81 KPHI 071934
SPSPHI

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

NJZ001-007-PAZ055-072000-
MONROE PA-SUSSEX NJ-WARREN NJ-
334 PM EDT SUN AUG 7 2011

...A STRONG THUNDERSTORM WILL AFFECT MONROE...SUSSEX AND WARREN
COUNTIES...

AT 328 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
A DEVELOPING THUNDERSTORM 9 MILES EAST OF MOUNT POCONO...MOVING EAST 
AT 30 MPH. THE THUNDERSTORM WILL BE NEAR ECHO LAKE AROUND 340 
PM...AND IF IT HOLDS TOGETHER...FLATBROOKVILLE AROUND 350 PM AND 
FIVE POINTS AROUND 400 PM.

BRIEF VERY HEAVY RAIN WILL FALL FROM THIS STORM...AND WILL CAUSE 
WATER TO POND ON ROADS AND POSSIBLY QUICKLY FILL ROADSIDE DITCHES.

OTHER THUNDERSTORMS ARE EXPECTED TO DEVELOP IN NORTHWEST NEW JERSEY 
BY 4 PM AS THIS MOUNT POCONO STORM HEADS EAST SOUTHEAST.  

LAT...LON 4120 7514 4116 7516 4115 7509 4109 7503
      4111 7495 4117 7490 4114 7473 4093 7479
      4103 7529 4121 7524

$$

FORECASTER:  DRAG

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 8:49 PM EDT	Flood Watch	PHI	Morris, Sussex, Warren	9 hr
Aug 6, 10:33 PM EDT	Areal Flood Advisory	PHI	Warren	6 hr
Aug 7, 12:42 AM EDT	Special Weather Statement	PHI	Morris	63 min
Aug 7, 1:32 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Warren	3 hr
Aug 7, 1:54 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	3 hr
Aug 7, 3:56 AM EDT	Special Weather Statement	PHI	Hunterdon	64 min
Aug 7, 4:45 AM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	60 min
Aug 7, 5:10 AM EDT	Areal Flood Advisory	PHI	Morris, Somerset	81 min
Aug 7, 5:30 AM EDT	Special Weather Statement	PHI	Mercer, Middlesex	60 min
Aug 7, 6:03 AM EDT	Flash Flood Watch	PHI	Sussex, Warren	14 hr
Aug 7, 3:25 PM EDT	Special Weather Statement	PHI	Mercer	35 min
Aug 7, 3:48 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Monmouth, Ocean	27 min
Aug 7, 4:19 PM EDT	Special Weather Statement	PHI	Monmouth	41 min
Aug 7, 5:02 PM EDT	Special Weather Statement	PHI	Sussex	28 min
Aug 7, 6:49 PM EDT	Special Weather Statement	PHI	Sussex	41 min
Aug 7, 7:11 PM EDT	Special Weather Statement	PHI	Sussex	49 min
Aug 7, 7:35 PM EDT	Special Weather Statement	PHI	Sussex	25 min
Aug 6, 10:06 PM EDT	Special Weather Statement	PHI	Berks	84 min
Aug 6, 10:14 PM EDT	Special Weather Statement	PHI	Pike	61 min
Aug 7, 12:48 AM EDT	Special Weather Statement	PHI	Montgomery	57 min
Aug 7, 2:29 AM EDT	Flash Flood Warning	PHI	Berks, Lehigh, Northampton	3 hr
Aug 7, 3:07 PM EDT	Special Weather Statement	PHI	Philadelphia	23 min
Aug 7, 7:20 PM EDT	Special Weather Statement	PHI	Monroe	40 min
Aug 7, 3:02 PM EDT	Special Weather Statement	PHI	Cecil	28 min
Aug 7, 4:50 PM EDT	Special Weather Statement	PHI	Cecil	40 min
Aug 7, 5:39 PM EDT	Special Weather Statement	PHI	Cecil	36 min
Aug 7, 6:31 PM EDT	Special Weather Statement	PHI	Kent	29 min

Nearby

Special Weather Statements in New Jersey, 2011 Every 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.