Alert archive / Pennsylvania / Special Weather Statements in 2017

Special Weather Statement, NWS Philadelphia/Mount Holly

March 3, 2017Sussex County, Warren County, New Jersey; Carbon County, Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Mar 3, 2017, 3:18 PM EST for Sussex County, Warren County, New Jersey; Carbon County, Monroe County, Northampton County, Pennsylvania. It was in force for 57 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
Mar 3, 2017, 3:18 PM EST (20:18 UTC)
Expired
Mar 3, 2017, 4:15 PM EST
In force
57 min
Issued by
NWS Philadelphia/Mount Holly

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

The radar

The Philadelphia radar (KDIX), 141 km from the middle of the area, began a volume at 20:20 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 12:00Z, 8.3 hours before the alert went out and 211 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2017-03-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2017-03-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -28 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
1272 m above ground
0-6 km bulk shear
90 kt
0-1 km storm-relative helicity
-28 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

526 
WWUS81 KPHI 032018
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
318 PM EST FRI MAR 3 2017

NJZ001-007-PAZ054-055-060>062-032115-
Sussex-Warren-Lehigh-Monroe-Northampton-Berks-Carbon-
318 PM EST FRI MAR 3 2017

...LOCALIZED SNOW SQUALLS WILL AFFECT SUSSEX...NORTHERN 
WARREN...NORTH-CENTRAL BERKS...NORTHWESTERN LEHIGH...CARBON...MONROE 
AND NORTHAMPTON COUNTIES...

At 312 PM EST, several heavier snow showers were located near 
Skytop, Hazleton and Heckscherville in Pennsylvania. Movement was 
east at 35 mph.

This squall will be near...
  Skytop, Mountainhome and Canadensis around 320 PM EST. 
  Jim Thorpe around 330 PM EST. 
  Lehighton around 335 PM EST. 
  Christmans and Flatbrookville around 340 PM EST. 
  Palmerton, Hamburg, Beltzville State Park and Penn Forest 
  Reservoir around 345 PM EST. 
  Slatington, Walnutport, Lenhartsville, Crandon Lakes, Wanamakers, 
  Kresgeville, Five Points, Berlinsville and Hainesville around 350 
  PM EST. 
  Branchville, Danielsville and Gilbert around 355 PM EST. 
  Newton, Kunkletown, Pellettown, Rossland, Beersville and New 
  Tripoli around 400 PM EST. 

Visibilities in this squall will drop quickly to a quarter mile or 
less in spots for a few minutes. Winds in excess of 40 mph are also 
possible. For most locations, snowfall accumulations will be limited 
to grassy surfaces. However, local roads in the higher elevations of 
the southern Poconos may suddenly become slick with a dusting of 
snow.

Use extra caution if traveling into or through this snow squall. 
Rapid changes in visibility and potentially slick roads are likely 
to lead to accidents.

LAT...LON 4119 7452 4088 7484 4061 7565 4047 7591
      4055 7612 4057 7602 4065 7598 4074 7576
      4091 7599 4101 7573 4109 7577 4112 7564
      4123 7550 4125 7513 4115 7515 4114 7509
      4108 7503 4116 7490 4132 7480 4135 7472
TIME...MOT...LOC 2012Z 290DEG 32KT 4128 7524 4097 7596 4074 7630 

$$

JRK

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 3, 3:04 PM ESTSpecial Weather StatementPHIGloucester, Salem41 min
Mar 3, 4:08 PM ESTSpecial Weather StatementPHIWarren37 min
Mar 3, 4:48 PM ESTSpecial Weather StatementPHIHunterdon, Mercer42 min
Mar 3, 4:54 PM ESTSpecial Weather StatementPHIMorris, Somerset36 min
Mar 3, 5:31 PM ESTSpecial Weather StatementPHICamden, Mercer29 min
Mar 3, 5:52 PM ESTSpecial Weather StatementPHIBurlington, Camden, Gloucester23 min
Mar 3, 6:17 PM ESTSpecial Weather StatementPHIBurlington, Ocean28 min
Mar 3, 3:08 PM ESTSpecial Weather StatementPHIMontgomery37 min
Mar 3, 3:42 PM ESTSpecial Weather StatementPHIDelaware, Montgomery, Philadelphia33 min

Nearby

Special Weather Statements in Pennsylvania, 2017Special Weather Statements in New Jersey, 2017Every special weather statement in 2017

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.