Alert archive / Pennsylvania / Special Weather Statements in 2014

Special Weather Statement, NWS Philadelphia/Mount Holly

July 2, 2014Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Jul 2, 2014, 7:26 PM EDT for Philadelphia County, Pennsylvania. It was in force for 64 min. 2 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: Jul 2, 2014, 7:26 PM EDT (23:26 UTC)
Expired: Jul 2, 2014, 8:30 PM EDT
In force: 64 min
Issued by: NWS Philadelphia/Mount Holly

County Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 52 km from the middle of the area, began a volume at 23:26 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
Jul 2, 8:00 PM EDT	TSTM WND DMG	Northeast Philadelphia, PA	TREES AND WIRES DOWN AT SEVERAL LOCATIONS ACROSS NORTHEAST PHILADELPHIA.
Jul 2, 8:20 PM EDT	TSTM WND DMG	2 Nw Cinnaminson, NJ	DAMAGE TO SAIL BOATS REPORTED AS THE STORM MOVED OVER THE DELAWARE RIVER.

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

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 11.4 hours before the alert went out and 113 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: 1420 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 901 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

973 
WWUS81 KPHI 022326
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
726 PM EDT WED JUL 2 2014

NJZ015-018-019-PAZ071-106-030030-
CAMDEN NJ-LOWER BUCKS PA-MERCER NJ-NORTHWESTERN BURLINGTON NJ-
PHILADELPHIA PA-
726 PM EDT WED JUL 2 2014

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN PHILADELPHIA...
NORTHERN BURLINGTON...NORTHWESTERN CAMDEN...SOUTH CENTRAL MERCER AND
SOUTHEASTERN BUCKS COUNTIES...

AT 725 PM EDT...A STRONG THUNDERSTORM WAS NEAR PALMYRA...MOVING
NORTHEAST AT 30 MPH.

WIND GUSTS TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS STORM. 

THIS STORM WILL BE NEAR RIVERSIDE AROUND 740 PM...BURLINGTON AROUND
750 PM...FLORENCE AROUND 800 PM...FIELDSBORO AROUND 810 PM AND
CROSSWICKS AROUND 820 PM.

LAT...LON 3987 7509 4004 7516 4006 7513 4005 7511
      4006 7509 4007 7510 4008 7509 4030 7467
      3999 7452

$$

FORECASTER:SFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 3:59 AM EDT	Small Craft Advisory	PHI		18 hr
Jul 2, 2:48 PM EDT	Special Weather Statement	PHI	Sussex	42 min
Jul 2, 3:30 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	60 min
Jul 2, 3:36 PM EDT	Flash Flood Watch	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	46 hr
Jul 2, 3:58 PM EDT	Areal Flood Advisory	PHI	Sussex, Warren	4 hr
Jul 2, 4:03 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	57 min
Jul 2, 4:34 PM EDT	Flash Flood Warning	PHI	Sussex	4 hr
Jul 2, 5:01 PM EDT	Areal Flood Advisory	PHI	Morris, Sussex, Warren	3 hr
Jul 2, 5:08 PM EDT	Special Weather Statement	PHI	Hunterdon	52 min
Jul 2, 5:23 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	67 min
Jul 2, 5:42 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset	3 hr
Jul 2, 5:56 PM EDT	Special Weather Statement	PHI	Warren	49 min
Jul 2, 6:06 PM EDT	Special Weather Statement	PHI	Somerset	24 min
Jul 2, 6:13 PM EDT	Flash Flood Warning	PHI	Hunterdon	4 hr
Jul 2, 6:31 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Middlesex, Morris, Somerset	42 min
Jul 2, 7:09 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Somerset	4 hr
Jul 2, 7:15 PM EDT	Flash Flood Warning	PHI	Hunterdon, Middlesex, Somerset	4 hr
Jul 2, 7:16 PM EDT	Special Weather Statement	PHI	Middlesex, Somerset	59 min
Jul 2, 7:35 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Mercer	55 min
Jul 2, 7:48 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	27 min
Jul 2, 7:52 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Jul 2, 7:58 PM EDT	Special Marine Warning	PHI		62 min
Jul 2, 1:10 PM EDT	Special Weather Statement	PHI	Monroe	65 min
Jul 2, 1:34 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	56 min
Jul 2, 1:47 PM EDT	Severe Thunderstorm Warning	PHI	Berks	58 min
Jul 2, 2:45 PM EDT	Special Weather Statement	PHI	Berks	30 min
Jul 2, 2:49 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	4 hr
Jul 2, 3:00 PM EDT	Areal Flood Advisory	PHI	Berks	2 hr
Jul 2, 3:24 PM EDT	Special Weather Statement	PHI	Bucks	66 min
Jul 2, 3:25 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	65 min
Jul 2, 4:56 PM EDT	Areal Flood Advisory	PHI	Berks	2 hr
Jul 2, 5:01 PM EDT	Severe Thunderstorm Warning	PHI	Berks	59 min
Jul 2, 5:31 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Jul 2, 6:44 PM EDT	Flash Flood Warning	PHI	Berks	4 hr
Jul 2, 6:51 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Montgomery	4 hr
Jul 2, 7:00 PM EDT	Special Weather Statement	PHI	Bucks, Chester, Montgomery	60 min
Jul 2, 7:32 PM EDT	Special Weather Statement	PHI	Delaware, Montgomery, Philadelphia	58 min
Jul 2, 5:43 PM EDT	Special Weather Statement	PHI	Cecil	77 min
Jul 2, 6:38 PM EDT	Special Weather Statement	PHI	Kent	67 min

Nearby

Special Weather Statements in Pennsylvania, 2014 Every special weather statement in 2014

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.