Alert archive / Pennsylvania / Special Weather Statements in 2019

Special Weather Statement, NWS Philadelphia/Mount Holly

August 19, 2019Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Aug 19, 2019, 3:21 PM EDT for Philadelphia County, Pennsylvania. It was in force for 24 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 19, 2019, 3:21 PM EDT (19:21 UTC)
Expired: Aug 19, 2019, 3:45 PM EDT
In force: 24 min
Issued by: NWS Philadelphia/Mount Holly

County Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 57 km from the middle of the area, began a volume at 19:22 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.

What was reported inside it

Time	Report	Where	Remark
Aug 19, 3:28 PM EDT	HAIL 0.88	Roxborough, PA
Aug 19, 3:37 PM EDT	TSTM WND DMG	1 Ene Stenton, PA	DOWNED TREE IN WIRES NEAR SILVER STREET AND 11TH STREET. TIME ESTIMATED FROM RADAR.
Aug 19, 3:51 PM EDT	TSTM WND DMG	Center City, PA	DOWNED TREE AND WIRES NEAR DIAMOND STREET AND HANCOCK STREET WITH POWER OUTAGES REPORTED. TIME ESTIMATED FROM RADAR.
Aug 19, 3:55 PM EDT	HAIL 0.88	1 Ese Kensington, PA	NICKEL SIZE HAIL IN FISHTOWN. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.4 hours before the alert went out and 213 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: 1215 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 841 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

139 
WWUS81 KPHI 191921
SPSPHI

Special Weather Statement
National Weather Service Mount Holly NJ
321 PM EDT Mon Aug 19 2019

NJZ018-019-PAZ070-071-104-191945-
Northwestern Burlington-Camden-Eastern
Montgomery-Delaware-Philadelphia-
321 PM EDT Mon Aug 19 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN CAMDEN...
NORTHWESTERN BURLINGTON...SOUTHEASTERN MONTGOMERY...PHILADELPHIA AND
NORTHEASTERN DELAWARE COUNTIES...

At 320 PM EDT, a strong thunderstorm was located over Roxborough, or
near Philadelphia, moving east at 10 mph.

Wind gusts up to 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Philadelphia, Camden, Gloucester City, Cherry Hill, Willingboro,
Bellmawr, Yeadon, Riverside, Palmyra, Jenkintown, Magnolia,
Westville, Narberth, East Lansdowne, Rockledge, Brooklawn, Audubon
Park, Wissinoming, Morris Park and Barclay-Kingston.

This includes the following highways...
 Interstate 295 in New Jersey between mile markers 26 and 38.
 Interstate 95 in Pennsylvania between mile markers 15 and 33.
 New Jersey Turnpike between exits 3 and 4.

If outdoors, consider seeking shelter inside a building.

LAT...LON 3982 7502 3987 7513 3989 7514 3988 7516
      3997 7535 4011 7527 4007 7498 4005 7497
      4006 7495 4005 7487
TIME...MOT...LOC 1920Z 288DEG 9KT 4001 7522 

$$

Davis

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 1:00 PM EDT	Special Marine Warning	PHI		2 hr
Aug 19, 1:28 PM EDT	Special Weather Statement	PHI	Ocean	47 min
Aug 19, 1:40 PM EDT	Special Marine Warning	PHI		95 min
Aug 19, 1:46 PM EDT	Special Weather Statement	PHI	Cape May	44 min
Aug 19, 1:53 PM EDT	Special Marine Warning	PHI		97 min
Aug 19, 2:48 PM EDT	Areal Flood Advisory	PHI	Ocean	117 min
Aug 19, 2:54 PM EDT	Special Weather Statement	PHI	Sussex	51 min
Aug 19, 3:04 PM EDT	Special Weather Statement	PHI	Ocean	41 min
Aug 19, 3:52 PM EDT	Special Marine Warning	PHI		53 min
Aug 19, 3:56 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	37 min
Aug 19, 3:58 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth	47 min
Aug 19, 4:03 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	42 min
Aug 19, 4:05 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	40 min
Aug 19, 4:21 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	39 min
Aug 19, 4:28 PM EDT	Special Marine Warning	PHI		97 min
Aug 19, 4:30 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Monmouth, Ocean	45 min
Aug 19, 4:45 PM EDT	Special Marine Warning	PHI		60 min
Aug 19, 4:48 PM EDT	Areal Flood Advisory	PHI	Ocean	3 hr
Aug 19, 4:52 PM EDT	Special Weather Statement	PHI	Atlantic	23 min
Aug 19, 4:54 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	40 min
Aug 19, 5:03 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean	57 min
Aug 19, 5:11 PM EDT	Special Marine Warning	PHI		2 hr
Aug 19, 5:29 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Ocean	4 hr
Aug 19, 5:35 PM EDT	Areal Flood Advisory	PHI	Ocean	115 min
Aug 19, 5:40 PM EDT	Special Marine Warning	PHI		86 min
Aug 18, 8:18 PM EDT	Special Weather Statement	PHI	Berks	57 min
Aug 18, 8:23 PM EDT	Special Weather Statement	PHI	Berks	67 min
Aug 18, 10:25 PM EDT	Special Weather Statement	PHI	Berks	50 min
Aug 19, 12:57 PM EDT	Special Weather Statement	PHI	Sussex	48 min
Aug 19, 1:43 PM EDT	Special Weather Statement	PHI	Sussex	47 min
Aug 19, 1:56 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	49 min
Aug 19, 2:39 PM EDT	Areal Flood Advisory	PHI	Sussex	2 hr
Aug 19, 3:00 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	45 min
Aug 19, 3:28 PM EDT	Flash Flood Warning	PHI	Sussex	3 hr
Aug 19, 4:40 PM EDT	Special Weather Statement	PHI	Sussex	50 min
Aug 19, 4:41 PM EDT	Special Weather Statement	PHI	Kent	49 min
Aug 19, 4:46 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	46 min
Aug 19, 4:52 PM EDT	Areal Flood Advisory	PHI	Sussex	68 min
Aug 19, 6:42 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	51 min

Nearby

Special Weather Statements in Pennsylvania, 2019 Every special weather statement in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.