Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 25, NWS Philadelphia/Mount Holly

May 22, 2014Delaware County, Philadelphia County, Pennsylvania; New Castle County, Delaware; Camden County, Gloucester County, Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 22, 2014, 4:22 PM EDT for Delaware County, Philadelphia County, Pennsylvania; New Castle County, Delaware; Camden County, Gloucester County, Salem County, New Jersey. It was in force for 53 min. 9 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: May 22, 2014, 4:22 PM EDT (20:22 UTC)
Expired: May 22, 2014, 5:15 PM EDT
In force: 53 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties New Castle County, DE, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA

What was reported inside it

Time	Report	Where	Remark
May 22, 4:32 PM EDT	HAIL 1.5	Claymont, DE
May 22, 4:35 PM EDT	HAIL 1	Talleyville, DE	AND STRONG WIND GUSTS. NO WIND DAMAGE.
May 22, 4:45 PM EDT	HAIL 1.75	3 Sw Swedesboro, NJ
May 22, 4:48 PM EDT	HAIL 1.25	Upper Chichester Twp, PA
May 22, 4:50 PM EDT	HAIL 0.75	Mullica Hill, NJ	ON ROAD
May 22, 5:00 PM EDT	HAIL 1	1 Nw Woodstown, NJ
May 22, 5:10 PM EDT	TSTM WND DMG	Cheyney, PA	TREE DOWN.
May 22, 5:14 PM EDT	HAIL 1.5	Glen Mills, PA
May 22, 5:25 PM EDT	HAIL 1.5	Garnet Valley, PA

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
May 22, 12:39 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 22, 2:18 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 8.4 hours before the alert went out and 201 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: 291 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

680 
WUUS51 KPHI 222022 RRA
SVRPHI
DEC003-NJC007-015-033-PAC045-101-222115-
/O.NEW.KPHI.SV.W.0025.140522T2022Z-140522T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
422 PM EDT THU MAY 22 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHWESTERN PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
  DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
  NORTHWESTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  NORTHEASTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
  NORTH CENTRAL SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 515 PM EDT

* AT 419 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM. THE STORM WAS NEAR CHEYNEY...MOVING SOUTHEAST
  AT 30 MPH. THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL...
  AND DAMAGING WINDS IN EXCESS OF 60 MPH. 

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  LIMA AND CHELSEA AROUND 430 PM EDT...
  NETHER PROVIDENCE TOWNSHIP AND ARDEN AROUND 435 PM EDT...
  CHESTER AND EAST LANSDOWNE AROUND 440 PM EDT...
  PHILADELPHIA INTERNATIONAL ARPT AND FOLCROFT AROUND 445 PM EDT...
  GIBBSTOWN AND BECKETT AROUND 450 PM EDT...
  SWEDESBORO AND PAULSBORO AROUND 455 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS SEVERE THUNDERSTORM HAS A HISTORY OF PRODUCING LARGE HAIL IN 
CHESTER AND BERKS COUNTIES. 

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY.

&&

LAT...LON 3991 7555 3994 7554 3995 7552 4002 7533
      3998 7527 3998 7526 3983 7497 3964 7538
      3986 7560 3988 7560
TIME...MOT...LOC 2022Z 310DEG 24KT 3993 7549

$$

FORECASTER:

1 follow-up statement

485 
WWUS51 KPHI 222040
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
440 PM EDT THU MAY 22 2014

NJC007-PAC101-222049-
/O.CAN.KPHI.SV.W.0025.000000T0000Z-140522T2115Z/
CAMDEN NJ-PHILADELPHIA PA-
440 PM EDT THU MAY 22 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN PHILADELPHIA AND
WEST CENTRAL CAMDEN COUNTIES IS CANCELLED...

THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY.

LAT...LON 3986 7549 3991 7533 3995 7529 3991 7525
      3988 7526 3987 7521 3988 7520 3982 7509
      3979 7508 3964 7538 3981 7555
TIME...MOT...LOC 2039Z 310DEG 24KT 3985 7539

$$

DEC003-NJC015-033-PAC045-222115-
/O.CON.KPHI.SV.W.0025.000000T0000Z-140522T2115Z/
DELAWARE PA-GLOUCESTER NJ-NEW CASTLE DE-SALEM NJ-
440 PM EDT THU MAY 22 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTH CENTRAL SALEM...NORTHEASTERN NEW CASTLE...NORTHWESTERN
GLOUCESTER AND SOUTHEASTERN DELAWARE COUNTIES...

AT 437 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR UPLAND...OR 11 MILES NORTHEAST OF WILMINGTON...MOVING SOUTHEAST
AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
EDDYSTONE AND PHILADELPHIA INTERNATIONAL ARPT AROUND 445 PM EDT...
GIBBSTOWN AND BECKETT AROUND 450 PM EDT...
SWEDESBORO AND PAULSBORO AROUND 455 PM EDT...
WOODBURY HEIGHTS AND DEPTFORD AROUND 500 PM EDT...
MULLICA HILL AND WENONAH AROUND 505 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HAIL UP TO QUARTWER SIZE INCHES IN DIAMETER HAS BEEN REPORTED
ALONG THE DELAWARE AND PENNSYLVANIA BORDER. THE STORM...TAKE 
IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THURSDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1000 PM EDT
THURSDAY EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY.

&&

LAT...LON 3986 7549 3991 7533 3995 7529 3991 7525
      3988 7526 3987 7521 3988 7520 3982 7509
      3979 7508 3964 7538 3981 7555
TIME...MOT...LOC 2039Z 310DEG 24KT 3985 7539

$$


TFG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 3:25 AM EDT	Special Weather Statement	PHI	Lehigh	65 min
May 22, 2:12 PM EDT	Special Weather Statement	PHI	Berks	63 min
May 22, 2:14 PM EDT	Severe Thunderstorm Warning	PHI	Berks	46 min
May 22, 2:29 PM EDT	Special Weather Statement	PHI	Carbon	46 min
May 22, 2:40 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	50 min
May 22, 2:50 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	55 min
May 22, 3:09 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	66 min
May 22, 3:21 PM EDT	Special Weather Statement	PHI	Northampton	24 min
May 22, 3:27 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	33 min
May 22, 3:33 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	57 min
May 22, 3:51 PM EDT	Severe Thunderstorm Warning	PHI	Berks	39 min
May 22, 3:56 PM EDT	Special Weather Statement	PHI	Bucks	34 min
May 22, 4:13 PM EDT	Severe Thunderstorm Warning	PHI	Delaware, Philadelphia	62 min
May 22, 4:22 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	38 min
May 22, 4:31 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	44 min
May 22, 5:23 PM EDT	Special Weather Statement	PHI	Delaware	37 min
May 22, 3:49 PM EDT	Severe Thunderstorm Warning	PHI	New Castle	56 min
May 22, 4:29 PM EDT	Tornado Warning	PHI	Kent	31 min
May 22, 4:53 PM EDT	Tornado Warning	PHI	Kent	22 min
May 22, 5:11 PM EDT	Severe Thunderstorm Warning	PHI	Kent, Sussex	64 min
May 22, 5:43 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	62 min
May 22, 6:13 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	32 min
May 22, 2:20 AM EDT	Special Weather Statement	PHI	Morris, Sussex	55 min
May 22, 9:58 AM EDT	Special Weather Statement	PHI	Ocean	62 min
May 22, 4:48 PM EDT	Severe Thunderstorm Warning	PHI	Cumberland, Gloucester, Salem	42 min
May 22, 4:53 PM EDT	Special Weather Statement	PHI	Morris, Sussex	52 min
May 22, 4:57 PM EDT	Special Marine Warning	PHI		48 min
May 22, 5:28 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Cumberland, Salem	47 min
May 22, 5:34 PM EDT	Special Weather Statement	PHI	Morris	56 min
May 22, 5:52 PM EDT	Special Marine Warning	PHI		83 min
May 22, 5:53 PM EDT	Special Marine Warning	PHI		67 min
May 22, 6:14 PM EDT	Severe Thunderstorm Warning	PHI	Cape May	31 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2014 Severe Thunderstorm Warnings in Pennsylvania, 2014 Severe Thunderstorm Warnings in Delaware, 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.