Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

July 27, 2021Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 27, 2021, 10:22 PM EDT for Monroe 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 27, 2021, 10:22 PM EDT (02:22 UTC)
Expired
Jul 27, 2021, 10:45 PM EDT
In force
23 min
Issued by
NWS Philadelphia/Mount Holly

County Monroe County, PA

The radar

The Binghamton radar (KBGM), 141 km from the middle of the area, began a volume at 02:25 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, 2.4 hours before the alert went out and 189 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 00:00Z on 2021-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 190 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2021-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 138 square meters per square second.193958Sfc1 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
190 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1682 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
138 m²/s²
0-3 km storm-relative helicity
173 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

Open this sounding in Storm Lab

The text

As transmitted.

303 
WWUS81 KPHI 280222
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
1022 PM EDT Tue Jul 27 2021

NJZ001-007-PAZ055-280245-
Sussex-Warren-Monroe-
1022 PM EDT Tue Jul 27 2021

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL SUSSEX...NORTH
CENTRAL WARREN AND NORTHEASTERN MONROE COUNTIES...

At 1022 PM EDT, a strong thunderstorm was located over Alpine
Mountain, or near Mount Pocono, moving east at 40 mph.

Wind gusts up to 40 mph are possible with this storm.

Locations impacted include...
Flatbrookville, Henryville, Werry Lake, Analomink, Millbrook,
Tannersville, Mountainhome, Canadensis, Alpine Mountain, Scotrun,
Echo Lake, Paradise Valley, Cresco, Marshalls Creek, Hidden Lake and
Arlington Heights.

This includes Interstate 80 in Pennsylvania between mile markers 301
and 302.
 
LAT...LON 4115 7515 4114 7509 4108 7503 4109 7500
      4112 7495 4118 7488 4101 7492 4104 7533
      4122 7531 4123 7514
TIME...MOT...LOC 0222Z 275DEG 35KT 4113 7523 

$$

MPS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 10:44 PM EDTSpecial Weather StatementPHIWarren31 min
Jul 27, 11:13 PM EDTSpecial Weather StatementPHIWarren47 min
Jul 28, 3:53 PM EDTSpecial Weather StatementPHICape May22 min
Jul 27, 8:06 PM EDTSpecial Weather StatementPHIMonroe24 min
Jul 27, 10:42 PM EDTSpecial Weather StatementPHICarbon33 min
Jul 28, 4:20 PM EDTSpecial Weather StatementPHISussex40 min
Jul 28, 6:25 PM EDTSpecial Weather StatementPHIKent35 min

Nearby

Special Weather Statements in Pennsylvania, 2021Every 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.