Alert archive / Pennsylvania / Special Weather Statements in 2011

Special Weather Statement, NWS Philadelphia/Mount Holly

April 11, 2011Sussex County, Warren County, New Jersey; 5 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Apr 11, 2011, 7:13 PM EDT for Sussex County, Warren County, New Jersey; 5 counties in Pennsylvania. It was in force for 92 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: Apr 11, 2011, 7:13 PM EDT (23:13 UTC)
Expired: Apr 11, 2011, 8:45 PM EDT
In force: 92 min
Issued by: NWS Philadelphia/Mount Holly

Counties Sussex County, NJ, Warren County, NJ, Berks County, PA, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 140 km from the middle of the area, began a volume at 23:16 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.2 hours before the alert went out and 179 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 960 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -186 m²/s²
0-3 km storm-relative helicity: -236 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.

250 
WWUS81 KPHI 112313
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
713 PM EDT MON APR 11 2011

NJZ001-007-PAZ054-055-060>062-120045-
BERKS PA-CARBON PA-LEHIGH PA-MONROE PA-NORTHAMPTON PA-SUSSEX NJ-
WARREN NJ-
713 PM EDT MON APR 11 2011

...HEAVY SHOWERS AND A FEW STRONG THUNDERSTORMS WILL AFFECT 
BERKS...CARBON...LEHIGH...MONROE...NORTHAMPTON...SUSSEX AND WARREN 
COUNTIES...

AT 708 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED SHOWERS AND 
POSSIBLY A FEW STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 16 
MILES SOUTHWEST OF WILKES-BARRE TO 46 MILES WEST OF LANCASTER... 
MOVING EAST AT 25 MPH. THE SHOWERS AND THUNDERSTORMS WILL BE NEAR 
WHITE HAVEN...AND TRESCKOW AROUND 745 PM...WEATHERLY...AND LANSFORD 
AROUND 800 PM...BLAKESLEE...AND NEW MAHONING AROUND 815 PM...POCONO 
PINES...AND TOBYHANNA AROUND 830 PM...AND NEW TRIPOLI AND PALMERTON 
AROUND 845 PM.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THESE STORMS...AS ARE SMALL 
HAIL AND OCCASIONAL BUT DANGEROUS CLOUD TO GROUND LIGHTNING.

LAT...LON 4122 7442 4100 7467 4069 7532 4018 7595
      4049 7644 4059 7603 4064 7600 4074 7578
      4091 7600 4100 7575 4110 7577 4113 7564
      4123 7554 4126 7514 4116 7516 4115 7509
      4109 7503 4112 7495 4127 7484 4135 7471

$$

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; radar from the NEXRAD Level II archive.