Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

July 16, 2021Carbon County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 16, 2021, 5:07 PM EDT for Carbon County, Pennsylvania. It was in force for 23 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 16, 2021, 5:07 PM EDT (21:07 UTC)
Expired: Jul 16, 2021, 5:30 PM EDT
In force: 23 min
Issued by: NWS Philadelphia/Mount Holly

County Carbon County, PA

The radar

The Philadelphia radar (KDIX), 142 km from the middle of the area, began a volume at 21:09 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, 9.1 hours before the alert went out and 232 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: 1044 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 994 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

722 
WWUS81 KPHI 162107
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
507 PM EDT Fri Jul 16 2021

PAZ054-055-061-062-162130-
Lehigh-Monroe-Northampton-Carbon-
507 PM EDT Fri Jul 16 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN LEHIGH...SOUTHERN
CARBON...SOUTHWESTERN MONROE AND WEST CENTRAL NORTHAMPTON COUNTIES...

At 506 PM EDT, a strong thunderstorm was located over Jim Thorpe, or
over Lehighton, moving east at 30 mph.

Wind gusts up to 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Allentown, Lehighton, Northampton, Palmerton, Jim Thorpe, Slatington,
Nesquehoning, Walnutport, Brodheadsville, New Mahoning, Kunkletown,
Neffs, Gilbert, Rossland, Berlinsville, Emerald, Kresgeville, Jonas,
Danielsville and Beltzville State Park.

This includes Northeast Extension between mile markers 63 and 84.
 
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 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
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4099 7536 4062 7545 4072 7578 4074 7576
      4083 7590 4093 7578
TIME...MOT...LOC 2106Z 260DEG 26KT 4085 7573 

$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 2:55 PM EDT	Areal Flood Advisory	PHI	Sussex	4 hr
Jul 16, 3:17 PM EDT	Flash Flood Watch	PHI	Atlantic, Burlington, Camden, Gloucester, Hunterdon, Mercer and 8 more	35 hr
Jul 16, 5:01 PM EDT	Areal Flood Advisory	PHI	Sussex	2 hr
Jul 16, 5:21 PM EDT	Flash Flood Warning	PHI	Sussex	2 hr
Jul 16, 5:25 PM EDT	Special Weather Statement	PHI	Sussex	35 min
Jul 16, 5:29 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	46 min
Jul 16, 5:34 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	112 min
Jul 16, 6:10 PM EDT	Special Weather Statement	PHI	Warren	35 min
Jul 16, 6:14 PM EDT	Special Weather Statement	PHI	Sussex	31 min
Jul 16, 6:27 PM EDT	Areal Flood Advisory	PHI	Sussex	59 min
Jul 16, 6:46 PM EDT	Special Weather Statement	PHI	Warren	29 min
Jul 16, 7:10 PM EDT	Special Weather Statement	PHI	Warren	35 min
Jul 16, 5:21 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	39 min
Jul 16, 5:38 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	20 min
Jul 16, 7:42 PM EDT	Special Weather Statement	PHI	Berks	33 min

Nearby

Special Weather Statements in Pennsylvania, 2021 Every special weather statement in 2021

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.