Alert archive / Pennsylvania / Special Weather Statements in 2014

Special Weather Statement, NWS Philadelphia/Mount Holly

April 15, 2014Camden County, Gloucester County, Salem County, New Jersey; 4 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this special weather statement at Apr 15, 2014, 3:20 PM EDT for Camden County, Gloucester County, Salem County, New Jersey; 4 counties in Pennsylvania. It was in force for 40 min. 3 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: Apr 15, 2014, 3:20 PM EDT (19:20 UTC)
Expired: Apr 15, 2014, 4:00 PM EDT
In force: 40 min
Issued by: NWS Philadelphia/Mount Holly

Counties Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Bucks County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 78 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
Apr 15, 3:50 PM EDT	TSTM WND DMG	Abington, PA	TREES DOWN NEAR THE ABINGTON HOSPITAL.
Apr 15, 3:50 PM EDT	TSTM WND DMG	Philadelphia, PA	TREES DOWN IN WEST PHILADELPHIA.
Apr 15, 4:05 PM EDT	TSTM WND DMG	Philadelphia, PA	TREE DOWN IN NORTHEAST PHILADELPHIA.

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, 7.3 hours before the alert went out and 84 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: 109 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 669 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 242 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

429 
WWUS81 KPHI 151920
SPSPHI

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
320 PM EDT TUE APR 15 2014

DEZ001-NJZ015>019-021-PAZ070-071-102>106-152000-
CAMDEN NJ-CUMBERLAND NJ-DELAWARE PA-EASTERN CHESTER PA-
EASTERN MONTGOMERY PA-GLOUCESTER NJ-LOWER BUCKS PA-MERCER NJ-
NEW CASTLE DE-NORTHWESTERN BURLINGTON NJ-PHILADELPHIA PA-SALEM NJ-
UPPER BUCKS PA-WESTERN MONTGOMERY PA-
320 PM EDT TUE APR 15 2014

...SHOWERS WITH STRONG WIND GUSTS WILL AFFECT DELAWARE...EAST CENTRAL
CHESTER...GLOUCESTER...MONTGOMERY...NORTH CENTRAL CUMBERLAND...
NORTHERN NEW CASTLE...NORTHWESTERN BURLINGTON...PHILADELPHIA...
SALEM...SOUTHERN BUCKS...SOUTHWESTERN MERCER AND WESTERN CAMDEN
COUNTIES...

AT 317 PM EDT...SHOWERS WITH STRONG WIND GUSTS WERE LOCATED FROM
BRITTANY FARMS-HIGHLANDS TO BEAR...MOVING SOUTHEAST AT 35 MPH.

WIND GUSTS TO 45 MPH ARE POSSIBLE WITH THESE SHOWERS. 

VERY HEAVY RAIN WILL FALL FROM THESE SHOWERS...AND WILL CAUSE WATER
TO POND ON ROADS AND FILL POOR DRAINAGE AREAS. THE RAIN CAN CAUSE
RAPID RISES ON SMALL STREAMS AND CREEKS. 

THESE SHOWERS WILL BE NEAR WILLOW GROVE AROUND 330 PM...CHURCHVILLE
AROUND 340 PM...LEVITTOWN AROUND 350 PM AND LINDENWOLD AROUND 400 PM.

LAT...LON 4007 7553 4010 7546 4012 7546 4013 7550
      4043 7529 4023 7466 4010 7471 3999 7480
      3944 7515 3956 7553 3959 7555 3958 7557
      3965 7579

$$

FORECASTER:
KLINE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 3:40 AM EDT	Freeze Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more	29 hr
Apr 15, 4:05 AM EDT	Gale Warning	PHI		30 hr
Apr 15, 12:44 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Warren	4 hr
Apr 15, 12:58 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	4 hr
Apr 15, 2:46 PM EDT	Special Weather Statement	PHI	Hunterdon	44 min
Apr 15, 3:32 PM EDT	Freeze Watch	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more	24 hr
Apr 15, 3:36 PM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	39 min
Apr 15, 3:56 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Mercer	34 min
Apr 15, 4:11 PM EDT	Special Weather Statement	PHI	Somerset	34 min
Apr 15, 4:23 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex	37 min
Apr 15, 7:54 PM EDT	Areal Flood Warning	PHI	Somerset	6 hr
Apr 15, 12:30 PM EDT	Special Weather Statement	PHI	Bucks, Montgomery	30 min
Apr 15, 2:56 PM EDT	Areal Flood Advisory	PHI	Chester	4 hr
Apr 15, 5:20 PM EDT	River Flood Warning	PHI	Chester	7 hr
Apr 15, 11:26 AM EDT	Special Weather Statement	PHI	Sussex	49 min
Apr 15, 4:52 PM EDT	Special Weather Statement	PHI	Sussex	38 min

Nearby

Special Weather Statements in Pennsylvania, 2014 Special Weather Statements in New Jersey, 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.