Alert archive / Pennsylvania / Special Weather Statements in 2022

Special Weather Statement, NWS Philadelphia/Mount Holly

August 9, 2022Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 9, 2022, 6:03 PM EDT for Delaware County, Pennsylvania. It was in force for 27 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 9, 2022, 6:03 PM EDT (22:03 UTC)
Expired: Aug 9, 2022, 6:30 PM EDT
In force: 27 min
Issued by: NWS Philadelphia/Mount Holly
Hail: 0.25 in
Wind: 40

County Delaware County, PA

The radar

The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 22:05 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.1 hours before the alert went out and 200 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: 144 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1264 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -30 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

485 
WWUS81 KPHI 092203
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
603 PM EDT Tue Aug 9 2022
 
DEZ001-NJZ016-017-PAZ070-092230-
New Castle DE-Salem NJ-Gloucester NJ-Delaware PA-
603 PM EDT Tue Aug 9 2022

...A strong thunderstorm will impact portions of northeastern New
Castle, north central Salem, northwestern Gloucester and southern
Delaware Counties through 630 PM EDT...

At 602 PM EDT, Doppler radar was tracking a strong thunderstorm over
Arden, or 7 miles northeast of Wilmington, moving east at 15 mph.

HAZARD...Wind gusts up to 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...
Wilmington, Chester, Yeadon, Carneys Point, Folcroft, Swarthmore,
Penns Grove, East Lansdowne, Swedesboro, Arden, Darby Township,
Chelsea, Chester Township, Gibbstown, Tinicum Township, Beckett,
Nether Providence Township, Philadelphia International Arpt,
Philadelphia International Airport and Drexel Hill.

This includes the following highways...
 New Jersey Turnpike near exit 2.
 Interstate 95 in Pennsylvania between mile markers 0 and 11.
 Interstate 95 in Delaware between mile markers 16 and 23.
 Interstate 295 in New Jersey between mile markers 6 and 17.
 Interstate 476 in Pennsylvania between mile markers 0 and 5.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 3985 7554 3994 7538 3994 7524 3988 7526
      3987 7525 3968 7529 3974 7555
TIME...MOT...LOC 2202Z 276DEG 15KT 3983 7545 

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

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 10:04 AM EDT	Excessive Heat Warning	PHI	Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 2 more	10 hr
Aug 9, 5:00 PM EDT	Special Weather Statement	PHI	Middlesex	30 min
Aug 9, 6:25 PM EDT	Special Weather Statement	PHI	Gloucester	35 min
Aug 9, 7:08 PM EDT	Special Weather Statement	PHI	Burlington	37 min
Aug 9, 3:02 PM EDT	Special Weather Statement	PHI	Berks	28 min
Aug 9, 4:02 PM EDT	Special Weather Statement	PHI	Lehigh	28 min
Aug 9, 4:18 PM EDT	Special Weather Statement	PHI	Montgomery	27 min
Aug 9, 4:32 PM EDT	Special Weather Statement	PHI	Lehigh	28 min
Aug 9, 4:36 PM EDT	Special Weather Statement	PHI	Chester	24 min
Aug 9, 4:55 PM EDT	Special Weather Statement	PHI	Berks	35 min
Aug 9, 5:18 PM EDT	Special Weather Statement	PHI	Berks	27 min

Nearby

Special Weather Statements in Pennsylvania, 2022 Every special weather statement in 2022

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.