Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 86, NWS Philadelphia/Mount Holly

July 3, 20144 counties in Pennsylvania; Burlington County, Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 3, 2014, 6:46 PM EDT for 4 counties in Pennsylvania; Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 44 min. 6 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 3, 2014, 6:46 PM EDT (22:46 UTC)
Expired: Jul 3, 2014, 7:30 PM EDT
In force: 44 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

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

The radar

The Philadelphia radar (KDIX), 74 km from the middle of the area, began a volume at 22:47 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 3, 6:59 PM EDT	TSTM WND GST 54	Philadelphia Intl Airpo, PA
Jul 3, 7:05 PM EDT	TSTM WND DMG	Gloucester City, NJ	TREES DOWN.
Jul 3, 7:10 PM EDT	TSTM WND DMG	Northeast Philadelphia, PA	TREES DOWN IN LOWER NORTHEAST PHILADELPHIA.
Jul 3, 7:10 PM EDT	TSTM WND DMG	Oaklyn, NJ	LARGE TREE DOWN.
Jul 3, 7:17 PM EDT	TSTM WND GST 66	Northeast Philadelphia, PA
Jul 3, 7:31 PM EDT	TSTM WND DMG	Florence, NJ	WIRES REPORTED DOWN IN FLORENCE AND ACROSS WESTERN PORTIONS OF THE COUNTY.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 3, 2:12 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.8 hours before the alert went out and 90 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: 704 J/kg
Mixed-layer CIN: -85 J/kg
Mixed-layer LCL: 954 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

653 
WUUS51 KPHI 032246
SVRPHI
NJC005-007-015-PAC017-045-091-101-032330-
/O.NEW.KPHI.SV.W.0086.140703T2246Z-140703T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
646 PM EDT THU JUL 3 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA...
  SOUTHEASTERN MONTGOMERY COUNTY IN SOUTHEAST PENNSYLVANIA...
  PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
  EASTERN DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
  NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  NORTHERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 730 PM EDT

* AT 644 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR ROSE VALLEY...MOVING
  NORTHEAST AT 55 MPH. THIS STORM IS CAPABLE OF PRODUCING DESTRUCTIVE
  WINDS IN EXCESS OF 70 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EAST LANSDOWNE AND YEADON AROUND 655 PM EDT...
  KENSINGTON AND CENTER CITY AROUND 700 PM EDT...
  WISSINOMING AND PHILADELPHIA AROUND 705 PM EDT...
  TACONY AND HOLMESBURG AROUND 710 PM EDT...
  BEVERLY AND RIVERSIDE AROUND 715 PM EDT...
  BURLINGTON AND BRISTOL AROUND 720 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

&&

LAT...LON 3969 7532 3997 7547 3998 7544 3999 7545
      4002 7541 4004 7541 4007 7536 4006 7540
      4008 7540 4030 7489 3989 7451
TIME...MOT...LOC 2246Z 246DEG 47KT 3990 7539

$$

FORECASTER: AMC

1 follow-up statement

843 
WWUS51 KPHI 032307
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
707 PM EDT THU JUL 3 2014

NJC005-007-015-PAC017-045-091-101-032330-
/O.CON.KPHI.SV.W.0086.000000T0000Z-140703T2330Z/
CAMDEN NJ-BUCKS PA-MONTGOMERY PA-PHILADELPHIA PA-DELAWARE PA-
GLOUCESTER NJ-BURLINGTON NJ-
707 PM EDT THU JUL 3 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHERN BURLINGTON...NORTHWESTERN GLOUCESTER...EASTERN
DELAWARE...PHILADELPHIA...SOUTHEASTERN MONTGOMERY...SOUTHEASTERN
BUCKS AND NORTHWESTERN CAMDEN COUNTIES...

AT 705 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS
LOCATED NEAR KENSINGTON...OR NEAR PHILADELPHIA...MOVING NORTHEAST AT
55 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HOLMESBURG...DELANCO...ANDALUSIA AND RIVERSIDE BY 715 PM EDT...
  BEVERLY...CROYDON...EDGEWATER PARK AND CORNWELLS HEIGHTS-EDDINGTON
  BY 720 PM EDT...
  FLORENCE AND BRISTOL BY 725 PM EDT...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW
JERSEY AND EASTERN PENNSYLVANIA.

LAT...LON 3969 7532 3997 7547 3998 7544 3999 7545
      4002 7541 4004 7541 4007 7536 4006 7540
      4008 7540 4030 7489 3989 7451
TIME...MOT...LOC 2307Z 246DEG 47KT 4001 7511

$$

AMC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 8:08 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	52 min
Jul 2, 8:25 PM EDT	Flash Flood Warning	PHI	Bucks	4 hr
Jul 2, 8:33 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	57 min
Jul 2, 10:08 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	67 min
Jul 2, 10:38 PM EDT	Areal Flood Advisory	PHI	Bucks, Montgomery, Philadelphia	112 min
Jul 3, 1:22 PM EDT	Special Weather Statement	PHI	Northampton	38 min
Jul 3, 1:57 PM EDT	Tornado Warning	PHI	Northampton	24 min
Jul 3, 3:15 PM EDT	Special Weather Statement	PHI	Lebanon	45 min
Jul 3, 4:08 PM EDT	Special Weather Statement	PHI	Carbon	52 min
Jul 3, 5:06 PM EDT	Special Weather Statement	PHI	Monroe	24 min
Jul 3, 5:36 PM EDT	Severe Thunderstorm Warning	PHI	Chester	69 min
Jul 3, 5:55 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	35 min
Jul 3, 5:58 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	62 min
Jul 3, 6:02 PM EDT	Tornado Warning	PHI	Carbon, Monroe	28 min
Jul 3, 6:17 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe	4 hr
Jul 3, 6:19 PM EDT	Severe Thunderstorm Warning	PHI	Monroe	56 min
Jul 3, 6:21 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	39 min
Jul 3, 6:47 PM EDT	Severe Thunderstorm Warning	PHI	Northampton	58 min
Jul 3, 6:54 PM EDT	Special Weather Statement	PHI	Montgomery	66 min
Jul 3, 7:02 PM EDT	Areal Flood Advisory	PHI	Northampton	4 hr
Jul 3, 7:25 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Northampton	65 min
Jul 3, 7:29 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	61 min
Jul 2, 8:07 PM EDT	Areal Flood Advisory	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	4 hr
Jul 2, 8:19 PM EDT	Special Weather Statement	PHI	Mercer, Middlesex, Monmouth	56 min
Jul 2, 8:53 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Ocean, Salem	67 min
Jul 2, 8:59 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester, Monmouth, Ocean	4 hr
Jul 2, 9:54 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	44 min
Jul 2, 10:20 PM EDT	Special Marine Warning	PHI		55 min
Jul 2, 10:30 PM EDT	Special Weather Statement	PHI	Atlantic	60 min
Jul 2, 10:58 PM EDT	Special Weather Statement	PHI	Burlington	62 min
Jul 2, 11:17 PM EDT	Flash Flood Warning	PHI	Burlington	3 hr
Jul 3, 12:19 AM EDT	Special Marine Warning	PHI		116 min
Jul 3, 12:23 AM EDT	Special Marine Warning	PHI		67 min
Jul 3, 12:26 AM EDT	Special Marine Warning	PHI		64 min
Jul 3, 12:41 AM EDT	Severe Thunderstorm Warning	PHI	Cumberland	50 min
Jul 3, 1:00 AM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	45 min
Jul 3, 1:14 AM EDT	Special Marine Warning	PHI		61 min
Jul 3, 1:19 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 1 more	56 min
Jul 3, 1:52 AM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Ocean	4 hr
Jul 3, 1:56 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Ocean	53 min
Jul 3, 2:08 AM EDT	Special Marine Warning	PHI		67 min
Jul 3, 2:34 AM EDT	Special Weather Statement	PHI	Monmouth	56 min
Jul 3, 5:46 AM EDT	Small Craft Advisory	PHI		54 hr
Jul 3, 2:23 PM EDT	Special Weather Statement	PHI	Sussex	52 min
Jul 3, 3:27 PM EDT	High Surf Advisory	PHI	Atlantic, Cape May, Monmouth, Ocean	41 hr
Jul 3, 4:26 PM EDT	Special Weather Statement	PHI	Warren	49 min
Jul 3, 5:00 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	60 min
Jul 3, 5:21 PM EDT	Special Weather Statement	PHI	Sussex	54 min
Jul 3, 5:50 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	55 min
Jul 3, 6:38 PM EDT	Special Weather Statement	PHI	Warren	67 min
Jul 3, 6:42 PM EDT	Flash Flood Warning	PHI	Sussex	4 hr
Jul 3, 7:05 PM EDT	Special Weather Statement	PHI	Hunterdon	55 min
Jul 3, 7:14 PM EDT	Special Weather Statement	PHI	Sussex	61 min
Jul 3, 7:20 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Morris, Somerset	55 min
Jul 3, 7:44 PM EDT	Flash Flood Warning	PHI	Mercer, Middlesex, Morris, Somerset	4 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2014 Severe Thunderstorm Warnings in New Jersey, 2014 Every severe thunderstorm warning 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.