Alert archive / Pennsylvania / Special Weather Statements in 2021
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Sep 15, 2021, 5:31 PM EDT for Monroe County, Pennsylvania. It was in force for 29 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
- Sep 15, 2021, 5:31 PM EDT (21:31 UTC)
- Expired
- Sep 15, 2021, 6:00 PM EDT
- In force
- 29 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.50 in
- Wind
- 40
County Monroe County, PA
The radar
The Binghamton radar (KBGM), 121 km from the middle of the area, began a volume at 21:34 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
Albany, NY (KALY), launched 12:00Z, 9.5 hours before the alert went out and 225 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.
- Mixed-layer CAPE
- 856 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 766 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 214 m²/s²
- 0-3 km storm-relative helicity
- 248 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 6.3
The text
As transmitted.
200
WWUS81 KPHI 152131
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
531 PM EDT Wed Sep 15 2021
PAZ054-055-152200-
Monroe PA-Carbon PA-
531 PM EDT Wed Sep 15 2021
...A strong thunderstorm will impact portions of north central Carbon
and northwestern Monroe Counties through 600 PM EDT...
At 531 PM EDT, Doppler radar was tracking a strong thunderstorm near
White Haven, or 11 miles southeast of Wilkes-Barre, moving northeast
at 35 mph.
HAZARD...Wind gusts up to 40 mph and half inch 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...
Arrowhead Lake and Gouldsboro State Park.
This includes the following highways...
Northeast Extension between mile markers 95 and 97.
Interstate 80 in Pennsylvania between mile markers 277 and 278.
Interstate 380 in Pennsylvania between mile markers 9 and 12.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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.
A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
northeastern Pennsylvania.
&&
LAT...LON 4116 7542 4105 7577 4109 7577 4111 7571
4113 7569 4113 7567 4112 7565 4123 7554
4122 7551 4123 7551 4123 7547
TIME...MOT...LOC 2131Z 240DEG 30KT 4111 7577
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 3:25 AM EDT | Small Craft Advisory | PHI | 21 hr | |
| Sep 15, 7:36 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris | 24 min |
| Sep 15, 6:29 PM EDT | Special Weather Statement | PHI | Lebanon | 31 min |
| Sep 15, 6:48 PM EDT | Special Weather Statement | PHI | Berks | 27 min |
| Sep 15, 7:08 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 37 min |
| Sep 15, 7:17 PM EDT | Special Weather Statement | PHI | Lehigh | 28 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.