Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 178, NWS Philadelphia/Mount Holly

July 16, 2021Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 16, 2021, 5:38 PM EDT for Monroe County, Pennsylvania. It was in force for 20 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, 5:38 PM EDT (21:38 UTC)
Expired: Jul 16, 2021, 5:58 PM EDT
In force: 20 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Monroe County, PA

The radar

The Binghamton radar (KBGM), 139 km from the middle of the area, began a volume at 21:39 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, 9.6 hours before the alert went out and 191 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.

669 
WUUS51 KPHI 162138
SVRPHI
PAC089-162215-
/O.NEW.KPHI.SV.W.0178.210716T2138Z-210716T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
538 PM EDT Fri Jul 16 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northeastern Monroe County in northeastern Pennsylvania...

* Until 615 PM EDT.

* At 538 PM EDT, a severe thunderstorm was located near Analomink, or
  10 miles east of Mount Pocono, moving northeast at 15 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Wind damage to 
           roofs, siding, trees, and power lines is possible.

* Locations impacted include...
  East Stroudsburg, Delaware Water Gap, Henryville, Werry Lake,
  Analomink, Alpine Mountain, Echo Lake, Paradise Valley,
  Stroudsburg, Shawnee, Marshalls Creek, Hidden Lake and Arlington
  Heights.

This includes Interstate 80 in Pennsylvania between mile markers 311
and 314.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4124 7513 4115 7515 4114 7509 4108 7503
      4109 7500 4109 7498 4096 7518 4112 7529
      4125 7513
TIME...MOT...LOC 2138Z 243DEG 13KT 4108 7515 

HAIL...1.00IN
WIND...60MPH
 
$$

SFJ

1 follow-up statement

350 
WWUS51 KPHI 162158
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
558 PM EDT Fri Jul 16 2021

PAC089-162208-
/O.CAN.KPHI.SV.W.0178.000000T0000Z-210716T2215Z/
Monroe PA-
558 PM EDT Fri Jul 16 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONROE COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.  However gusty winds are still possible with this
thunderstorm.

LAT...LON 4124 7513 4115 7515 4114 7509 4108 7503
      4109 7500 4109 7498 4096 7518 4112 7529
      4125 7513
TIME...MOT...LOC 2155Z 243DEG 13KT 4111 7506 

$$

SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 3:17 PM EDT	Flash Flood Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	35 hr
Jul 16, 5:07 PM EDT	Special Weather Statement	PHI	Carbon	23 min
Jul 16, 5:21 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	39 min
Jul 16, 5:25 PM EDT	Special Weather Statement	PHI	Monroe	35 min
Jul 16, 5:34 PM EDT	Areal Flood Advisory	PHI	Carbon, Lehigh, Monroe, Northampton	112 min
Jul 16, 7:42 PM EDT	Special Weather Statement	PHI	Berks	33 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2021 Every severe thunderstorm warning 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.