Alert archive / Pennsylvania / Special Weather Statements in 2013

Special Weather Statement, NWS Philadelphia/Mount Holly

July 20, 2013Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 20, 2013, 2:39 PM EDT for Monroe County, Pennsylvania. It was in force for 51 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 20, 2013, 2:39 PM EDT (18:39 UTC)
Expired: Jul 20, 2013, 3:30 PM EDT
In force: 51 min
Issued by: NWS Philadelphia/Mount Holly

County Monroe County, PA

The radar

The Binghamton radar (KBGM), 127 km from the middle of the area, began a volume at 18:42 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

Albany, NY (KALY), launched 12:00Z, 6.7 hours before the alert went out and 229 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: 18 J/kg
Mixed-layer CIN: -253 J/kg
Mixed-layer LCL: 1465 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 159 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.

636 
WWUS81 KPHI 201839
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
239 PM EDT SAT JUL 20 2013

PAZ054-055-201930-
CARBON PA-MONROE PA-
239 PM EDT SAT JUL 20 2013

...A STRONG THUNDERSTORM WILL AFFECT MONROE AND NORTHERN CARBON
COUNTIES...

AT 229 PM EDT...A STRONG THUNDERSTORM WAS NEAR DORRANCE IN LUZERNE 
COUNTY...MOVING EAST AT 35 MPH. 

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM. FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. DO NOT STAY IN THE
OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE
INDOORS WHEN A THUNDERSTORM APPROACHES. VERY HEAVY RAIN WILL FALL
FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND FILL POOR
DRAINAGE AREAS. THE RAIN CAN CAUSE RAPID RISES ON SMALL STREAMS AND
CREEKS. 

THIS STORM WILL BE NEAR BLAKESLEE AROUND 310 PM...
POCONO PINES AROUND 320 PM AND MOUNT POCONO AROUND 330 PM.

LAT...LON 4095 7521 4098 7582 4099 7582 4101 7574
      4105 7578 4110 7576 4111 7573 4114 7569
      4113 7564 4123 7554 4123 7552 4124 7545
      4125 7520

$$

FORECASTER: HEAVENER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 8:05 PM EDT	Special Weather Statement	PHI	Hunterdon	25 min
Jul 19, 8:26 PM EDT	Special Weather Statement	PHI	Hunterdon	34 min
Jul 19, 8:58 PM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	32 min
Jul 19, 9:24 PM EDT	Special Weather Statement	PHI	Somerset	36 min
Jul 20, 4:18 PM EDT	Special Weather Statement	PHI	Morris	57 min
Jul 20, 5:47 PM EDT	Special Weather Statement	PHI	Monmouth	58 min
Jul 20, 6:36 PM EDT	Special Weather Statement	PHI	Somerset	39 min
Jul 20, 6:41 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Somerset	64 min
Jul 20, 6:57 PM EDT	Special Weather Statement	PHI	Hunterdon	63 min
Jul 20, 7:16 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	59 min
Jul 20, 7:54 PM EDT	Special Weather Statement	PHI	Salem	66 min
Jul 19, 8:24 PM EDT	Special Weather Statement	PHI	Berks	36 min
Jul 19, 8:33 PM EDT	Severe Thunderstorm Warning	PHI	Berks	42 min
Jul 19, 9:01 PM EDT	Special Weather Statement	PHI	Chester	29 min
Jul 19, 9:07 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Northampton	38 min
Jul 19, 9:41 PM EDT	Special Weather Statement	PHI	Northampton	34 min
Jul 20, 3:31 PM EDT	Special Weather Statement	PHI	Monroe	59 min
Jul 20, 5:13 PM EDT	Special Weather Statement	PHI	Lehigh	62 min
Jul 19, 8:42 PM EDT	Special Weather Statement	PHI	Cecil	33 min

Nearby

Special Weather Statements in Pennsylvania, 2013 Every special weather statement in 2013

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.