Alert archive / Pennsylvania / Special Weather Statements in 2021

Special Weather Statement, NWS Philadelphia/Mount Holly

August 11, 2021Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 11, 2021, 4:46 PM EDT for Monroe County, Pennsylvania. It was in force for 44 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: Aug 11, 2021, 4:46 PM EDT (20:46 UTC)
Expired: Aug 11, 2021, 5:30 PM EDT
In force: 44 min
Issued by: NWS Philadelphia/Mount Holly
Hail: 0.25 in
Wind: 40

County Monroe County, PA

The radar

The Binghamton radar (KBGM), 138 km from the middle of the area, began a volume at 20:48 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, 8.8 hours before the alert went out and 203 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: 977 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 711 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 18 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

782 
WWUS81 KPHI 112046
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
446 PM EDT Wed Aug 11 2021
 
PAZ054-055-112130-
Monroe PA-Carbon PA-
446 PM EDT Wed Aug 11 2021

...A strong thunderstorm will impact portions of northeastern Carbon
and Monroe Counties through 530 PM EDT...

At 446 PM EDT, Doppler radar was tracking a strong thunderstorm over
Albrightsville, or 12 miles northeast of Lehighton, moving east at 20
mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Mount Pocono, East Stroudsburg, Delaware Water Gap, Stormville,
Henryville, Brodheadsville, Werry Lake, Gilbert, Pocono Raceway, Lake
Harmony, Skytop, Tannersville, Mountainhome, Alpine Mountain, Long
Pond, Albrightsville, Kresgeville, Sun Valley, Jonas and Meckesville.

This includes the following highways...
 Northeast Extension between mile markers 83 and 92.
 Interstate 80 in Pennsylvania between mile markers 288 and 314.
 Interstate 380 in Pennsylvania between mile markers 0 and 4.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northwestern New Jersey...and northeastern Pennsylvania.

&&

LAT...LON 4119 7515 4115 7515 4114 7509 4108 7503
      4108 7500 4099 7513 4090 7533 4089 7551
      4093 7567 4103 7573 4115 7534 4125 7523
TIME...MOT...LOC 2046Z 255DEG 17KT 4100 7562 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

JEO

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 8:02 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	43 min
Aug 10, 8:18 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	42 min
Aug 10, 8:23 PM EDT	Special Marine Warning	PHI		79 min
Aug 10, 8:36 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem	39 min
Aug 10, 8:43 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	2 hr
Aug 10, 9:07 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Cumberland	23 min
Aug 11, 2:56 PM EDT	Excessive Heat Watch	PHI	Hunterdon, Morris, Warren	12 hr
Aug 11, 5:57 PM EDT	Special Weather Statement	PHI	Sussex	48 min
Aug 11, 6:32 PM EDT	Special Weather Statement	PHI	Morris, Sussex, Warren	28 min
Aug 11, 6:50 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	3 hr
Aug 11, 7:04 PM EDT	Areal Flood Advisory	PHI	Gloucester, Hunterdon, Salem	2 hr
Aug 11, 7:04 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	41 min
Aug 11, 7:11 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	49 min
Aug 11, 7:28 PM EDT	Flash Flood Warning	PHI	Morris, Warren	3 hr
Aug 11, 7:45 PM EDT	Special Weather Statement	PHI	Morris	45 min
Aug 11, 7:52 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Gloucester, Mercer	53 min
Aug 11, 7:57 PM EDT	Special Weather Statement	PHI	Hunterdon, Middlesex, Somerset	48 min
Aug 11, 4:58 PM EDT	Special Weather Statement	PHI	Berks	47 min
Aug 11, 5:20 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	57 min
Aug 11, 5:48 PM EDT	Severe Thunderstorm Warning	PHI	Berks	57 min
Aug 11, 6:16 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Montgomery	44 min
Aug 11, 6:26 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	49 min
Aug 11, 6:48 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Lehigh, Montgomery, Northampton	42 min
Aug 10, 8:11 PM EDT	Special Weather Statement	PHI	New Castle	34 min
Aug 10, 9:09 PM EDT	Special Weather Statement	PHI	Sussex	36 min
Aug 10, 8:13 PM EDT	Special Weather Statement	PHI	Caroline, Talbot	32 min
Aug 10, 8:43 PM EDT	Special Weather Statement	PHI	Caroline	32 min
Aug 11, 6:11 PM EDT	Special Weather Statement	PHI	Caroline, Kent, Queen Anne's	64 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.