Alert archive / Pennsylvania / Special Weather Statements in 2015

Special Weather Statement, NWS Philadelphia/Mount Holly

August 4, 2015Carbon County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 4, 2015, 1:42 AM EDT for Carbon County, Pennsylvania. It was in force for 48 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 4, 2015, 1:42 AM EDT (05:42 UTC)
Expired: Aug 4, 2015, 2:30 AM EDT
In force: 48 min
Issued by: NWS Philadelphia/Mount Holly

County Carbon County, PA

The radar

The Philadelphia radar (KDIX), 143 km from the middle of the area, began a volume at 05:44 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, 5.7 hours before the alert went out and 239 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: 1050 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 1110 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

377 
WWUS81 KPHI 040542
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
142 AM EDT TUE AUG 4 2015
 
PAZ054-055-060>062-040630-
CARBON-MONROE-BERKS-NORTHAMPTON-LEHIGH-
142 AM EDT TUE AUG 4 2015

...A STRONG THUNDERSTORM WILL AFFECT CARBON...WEST CENTRAL
NORTHAMPTON...NORTHERN BERKS...SOUTHWESTERN MONROE AND NORTHWESTERN
LEHIGH COUNTIES...

AT 141 AM EDT...A STRONG THUNDERSTORM WAS NEAR SNYDERS...OR NEAR
TAMAQUA...MOVING NORTHEAST AT 40 MPH.

WIND GUSTS UP TO 50 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
LEHIGHTON...PALMERTON...JIM THORPE...SLATINGTON...NESQUEHONING...WIND
GAP...WALNUTPORT...NEW TRIPOLI...CHRISTMANS...DANIELSVILLE...
ROSSLAND...LONG POND...BERLINSVILLE...BELTZVILLE STATE PARK...
BRODHEADSVILLE...MCMICHAEL...KUNKLETOWN...MECKESVILLE...NEW MAHONING
AND PENN FOREST RESERVOIR.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4083 7525 4060 7590 4065 7595 4069 7587
      4070 7583 4074 7576 4081 7587 4085 7593
      4109 7543
TIME...MOT...LOC 0541Z 243DEG 38KT 4072 7593 
$$
 
HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 2:07 AM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Middlesex, Somerset	53 min
Aug 4, 2:30 AM EDT	Special Weather Statement	PHI	Morris, Warren	60 min
Aug 4, 2:56 AM EDT	Special Weather Statement	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Somerset	64 min
Aug 4, 3:33 AM EDT	Special Marine Warning	PHI		57 min
Aug 4, 3:36 AM EDT	Special Weather Statement	PHI	Morris	24 min
Aug 4, 4:12 AM EDT	Special Weather Statement	PHI	Gloucester	63 min
Aug 4, 4:20 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	33 min
Aug 4, 5:25 AM EDT	Special Weather Statement	PHI	Monmouth	65 min
Aug 4, 10:53 AM EDT	Rip Current Statement	PHI	Cape May	4 hr
Aug 4, 12:06 AM EDT	Special Weather Statement	PHI	Chester	54 min
Aug 4, 12:45 AM EDT	Special Weather Statement	PHI	Bucks, Chester, Montgomery, Philadelphia	60 min
Aug 4, 1:23 AM EDT	Special Weather Statement	PHI	Berks	37 min
Aug 4, 1:31 AM EDT	Severe Thunderstorm Warning	PHI	Berks	44 min
Aug 4, 1:54 AM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	50 min
Aug 4, 5:18 AM EDT	Special Weather Statement	PHI	Kent, Queen Anne's	57 min
Aug 4, 5:37 AM EDT	Severe Thunderstorm Warning	PHI	Cecil, Kent, Queen Anne's	34 min
Aug 4, 6:11 PM EDT	Special Weather Statement	PHI	Sussex	64 min
Aug 4, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	20 min

Nearby

Special Weather Statements in Pennsylvania, 2015 Every special weather statement in 2015

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.