Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

August 7, 2011Mercer County, Middlesex County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 7, 2011, 5:30 AM EDT for Mercer County, Middlesex County, New Jersey. It was in force for 60 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, 5:30 AM EDT (09:30 UTC)
Expired: Aug 7, 2011, 6:30 AM EDT
In force: 60 min
Issued by: NWS Philadelphia/Mount Holly

Counties Mercer County, NJ, Middlesex County, NJ

The radar

The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 09:30 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 00:00Z, 9.5 hours before the alert went out and 124 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: 5 J/kg
Mixed-layer CIN: -208 J/kg
Mixed-layer LCL: 889 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 174 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.

225 
WWUS81 KPHI 070930
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
530 AM EDT SUN AUG 7 2011

NJZ009-010-012>015-071030-
EASTERN MONMOUTH NJ-HUNTERDON NJ-MERCER NJ-MIDDLESEX NJ-SOMERSET NJ-
WESTERN MONMOUTH NJ-
530 AM EDT SUN AUG 7 2011

...A STRONG THUNDERSTORM WILL AFFECT HUNTERDON...MERCER...
MIDDLESEX...MONMOUTH AND SOMERSET COUNTIES...

AT 524 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 10 MILES NORTH OF TRENTON...MOVING EAST AT 30
MPH. THE THUNDERSTORM WILL BE NEAR DAYTON...MONMOUTH JUNCTION AROUND
545 AM...SPOTSWOOD...OLD BRIDGE AROUND 600 AM...PORT MONMOUTH...
MATAWAN AROUND 615 AM...LEONARDO AND SANDY HOOK AROUND 630 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 4024 7470 4051 7479 4056 7422 4047 7427
      4044 7420 4046 7418 4045 7415 4046 7412
      4041 7399 4044 7402 4047 7401 4047 7399
      4041 7396 4032 7396

$$

HAYES

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, 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, 3:34 PM EDT	Special Weather Statement	PHI	Warren	26 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.