Alert archive / Pennsylvania / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

October 14, 2011Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Oct 14, 2011, 2:21 PM EDT for Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 54 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: Oct 14, 2011, 2:21 PM EDT (18:21 UTC)
Expired: Oct 14, 2011, 3:15 PM EDT
In force: 54 min
Issued by: NWS Philadelphia/Mount Holly

Counties Warren County, NJ, Monroe County, PA, Northampton County, PA

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.4 hours before the alert went out and 186 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: 262 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 748 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 63 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.

117 
WWUS81 KPHI 141821
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
221 PM EDT FRI OCT 14 2011

NJZ007-PAZ055-062-141915-
MONROE PA-NORTHAMPTON PA-WARREN NJ-
221 PM EDT FRI OCT 14 2011

...STRONG THUNDERSTORMS WILL AFFECT MONROE...NORTHAMPTON AND WARREN
COUNTIES...

AT 218 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES NORTHEAST OF
MOUNT POCONO TO 6 MILES SOUTHWEST OF EASTON...MOVING NORTH AT 40 MPH.
THE THUNDERSTORMS WILL BE NEAR STORMVILLE...SKYTOP AROUND 230 PM...
ROXBURG...PLEASANT VALLEY AROUND 245 PM...ECHO LAKE AND HOPE AROUND
300 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 50 MPH ARE POSSIBLE WITH THESE STORMS.

EXPECT SMALL HAIL AND FREQUENT...DANGEROUS CLOUD TO GROUND LIGHTNING
FROM THESE STORMS.

LAT...LON 4124 7513 4116 7516 4115 7509 4109 7503
      4110 7499 4092 7478 4089 7478 4087 7481
      4085 7480 4070 7498 4060 7519 4061 7522
      4054 7535 4055 7537 4121 7540 4125 7532
      4126 7514

$$

FORECASTER: AMC

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 14, 12:15 AM EDT	Coastal Flood Advisory	PHI	Atlantic, Burlington, Cape May, Cumberland, Middlesex, Monmouth and 1 more	13 hr
Oct 14, 3:26 AM EDT	Coastal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	19 hr
Oct 14, 4:01 AM EDT	Gale Watch	PHI		12 hr
Oct 14, 2:53 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Hunterdon, Mercer, Somerset	67 min
Oct 14, 3:12 PM EDT	Special Weather Statement	PHI	Sussex, Warren	63 min
Oct 14, 3:59 PM EDT	Gale Watch	PHI		12 hr
Oct 14, 3:59 PM EDT	Gale Warning	PHI		27 hr
Oct 14, 3:59 PM EDT	Special Weather Statement	PHI	Middlesex, Monmouth, Morris	61 min
Oct 14, 10:45 AM EDT	Special Weather Statement	PHI	Berks, Lehigh	60 min
Oct 14, 11:38 AM EDT	Special Weather Statement	PHI	Berks, Carbon, Lehigh	52 min
Oct 14, 12:25 PM EDT	Special Weather Statement	PHI	Chester, Delaware, Montgomery	80 min
Oct 14, 12:51 PM EDT	Special Weather Statement	PHI	Lehigh	54 min
Oct 14, 1:22 PM EDT	Special Weather Statement	PHI	Carbon, Monroe, Northampton	53 min
Oct 14, 1:43 PM EDT	Special Weather Statement	PHI	Bucks, Delaware, Montgomery, Philadelphia	62 min
Oct 14, 11:21 AM EDT	Special Weather Statement	PHI	Cecil	54 min

Nearby

Special Weather Statements in Pennsylvania, 2011 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.