Alert archive / New Jersey / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

July 31, 2011Hunterdon County, Middlesex County, Somerset County, New Jersey

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 31, 2011, 10:13 PM EDT for Hunterdon County, Middlesex County, Somerset County, New Jersey. It was in force for 62 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: Jul 31, 2011, 10:13 PM EDT (02:13 UTC)
Expired: Jul 31, 2011, 11:15 PM EDT
In force: 62 min
Issued by: NWS Philadelphia/Mount Holly

Counties Hunterdon County, NJ, Middlesex County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 02:15 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, 2.2 hours before the alert went out and 136 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: 28 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1615 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 103 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.

550 
WWUS81 KPHI 010213
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1013 PM EDT SUN JUL 31 2011

NJZ008>010-012-015-PAZ069-010315-
BUCKS PA-HUNTERDON NJ-MERCER NJ-MIDDLESEX NJ-MORRIS NJ-SOMERSET NJ-
1013 PM EDT SUN JUL 31 2011

...SHOWERS AND THUNDERSTORMS WILL AFFECT BUCKS...HUNTERDON... 
MERCER...MIDDLESEX...MORRIS AND SOMERSET COUNTIES...

AT 1010 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
SHOWERS AND THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES WEST 
OF MORRISTOWN 17 MILES WEST OF SOMERVILLE...MOVING EAST AT 20 MPH. 
THE SHOWERS AND THUNDERSTORMS WILL BE NEAR MORRISTOWN...CLOVERHILL 
AROUND 1030 PM...CHATHAM...MADISON AROUND 1045 PM...BELLE MEAD... 
WATCHUNG AROUND 1100 PM...HIGHLAND PARK AND COLONIA AROUND 1115 PM.

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

WIND GUSTS TO 35 MPH ARE POSSIBLE WITH THE SHOWERS AND STORMS.

LAT...LON 4046 7428 4030 7449 4049 7511 4068 7487
      4088 7465 4079 7436 4073 7437 4067 7445
      4065 7445 4066 7440 4059 7444 4060 7431
      4059 7429 4060 7423 4059 7420

$$

HAYES

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 10:58 PM EDT	Special Weather Statement	PHI	Morris	62 min
Aug 1, 1:49 AM EDT	Special Marine Warning	PHI		56 min
Aug 1, 1:50 AM EDT	Special Weather Statement	PHI	Monmouth	55 min
Aug 1, 1:35 PM EDT	Special Weather Statement	PHI	Morris, Sussex, Warren	3 hr
Aug 1, 2:11 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	94 min
Aug 1, 2:44 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	29 min
Aug 1, 4:09 PM EDT	Special Weather Statement	PHI	Camden	66 min
Aug 1, 5:06 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	69 min
Aug 1, 5:50 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	70 min
Aug 1, 6:03 PM EDT	Special Marine Warning	PHI		57 min
Aug 1, 6:16 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	59 min
Aug 1, 6:17 PM EDT	Areal Flood Advisory	PHI	Camden, Gloucester	3 hr
Aug 1, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	46 min
Aug 1, 6:47 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Gloucester, Salem	73 min
Aug 1, 7:01 PM EDT	Areal Flood Advisory	PHI	Atlantic, Cumberland, Gloucester, Salem	119 min
Aug 1, 7:07 PM EDT	Special Marine Warning	PHI		83 min
Aug 1, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland	59 min
Aug 1, 7:17 PM EDT	Special Marine Warning	PHI		118 min
Jul 31, 10:00 PM EDT	Special Weather Statement	PHI	Chester	60 min
Aug 1, 3:14 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	51 min
Aug 1, 3:46 PM EDT	Special Weather Statement	PHI	Berks	89 min
Aug 1, 4:00 PM EDT	Severe Thunderstorm Warning	PHI	Berks	75 min
Aug 1, 4:33 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery, Philadelphia	87 min
Aug 1, 4:39 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh	42 min
Aug 1, 5:11 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	2 hr
Aug 1, 5:37 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Philadelphia	53 min
Aug 1, 4:07 PM EDT	Special Weather Statement	PHI	Cecil	53 min
Aug 1, 4:46 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	48 min
Aug 1, 5:12 PM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	78 min
Aug 1, 6:12 PM EDT	Areal Flood Advisory	PHI	Kent, Queen Anne's	2 hr
Aug 1, 6:41 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's, Talbot	18 min
Aug 1, 7:31 PM EDT	Special Weather Statement	PHI	Caroline, Cecil, Kent, Queen Anne's	119 min
Aug 1, 7:46 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Kent, Queen Anne's	38 min
Aug 1, 3:15 PM EDT	Special Weather Statement	PHI	Sussex	45 min
Aug 1, 3:38 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	37 min
Aug 1, 3:59 PM EDT	Flash Flood Warning	PHI	Sussex	4 hr

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.