Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 47, NWS Philadelphia/Mount Holly

June 22, 2012Camden County, Gloucester County, Salem County, New Jersey; Cecil County, Kent County, Maryland; New Castle County, Delaware

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 22, 2012, 7:57 PM EDT for Camden County, Gloucester County, Salem County, New Jersey; Cecil County, Kent County, Maryland; New Castle County, Delaware. It was in force for 69 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 22, 2012, 7:57 PM EDT (23:57 UTC)
Expired: Jun 22, 2012, 9:06 PM EDT
In force: 69 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties New Castle County, DE, Cecil County, MD, Kent County, MD, Camden County, NJ, Gloucester County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 76 km from the middle of the area, began a volume at 23:56 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 22, 1:41 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 22, 2:12 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 12.0 hours before the alert went out and 40 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: 1129 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1361 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 53 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.

405 
WUUS51 KPHI 222357
SVRPHI
DEC003-MDC015-029-NJC007-015-033-230130-
/O.NEW.KPHI.SV.W.0047.120622T2357Z-120623T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
757 PM EDT FRI JUN 22 2012

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CECIL COUNTY IN NORTHEAST MARYLAND...
  THIS INCLUDES THE CITY OF ELKTON...
  NORTH CENTRAL KENT COUNTY IN NORTHEAST MARYLAND...
  NEW CASTLE COUNTY IN NORTHERN DELAWARE...
  THIS INCLUDES THE CITIES OF...WILMINGTON...NEWARK...MIDDLETOWN...
  WESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 930 PM EDT

* AT 752 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  SALEM...OR 9 MILES SOUTH OF WILMINGTON...AND MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ALLOWAY AROUND 805 PM EDT...
  WOODSTOWN AROUND 810 PM EDT...
  ELMER AND OLIVET AROUND 825 PM EDT...
  CLAYTON AND GLASSBORO AROUND 835 PM EDT...
  FRANKLINVILLE AND MALAGA AROUND 840 PM EDT...
  NEWFIELD AROUND 845 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO
GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NEW JERSEY AND SOUTHEAST PENNSYLVANIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR NORTHERN DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN
NEW JERSEY.

&&

LAT...LON 3934 7618 3938 7611 3938 7606 3943 7600
      3952 7599 3954 7606 3962 7613 3992 7501
      3964 7484 3951 7499 3957 7506 3953 7519
      3956 7525 3949 7532 3945 7552 3947 7556
      3950 7556 3948 7558 3944 7557 3929 7618
TIME...MOT...LOC 2357Z 267DEG 24KT 3961 7543

$$

NIERENBERG

3 follow-up statements

703 
WWUS51 KPHI 230031
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
831 PM EDT FRI JUN 22 2012

MDC015-029-230041-
/O.CAN.KPHI.SV.W.0047.000000T0000Z-120623T0130Z/
CECIL MD-KENT MD-
831 PM EDT FRI JUN 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL KENT AND CECIL
COUNTIES IS CANCELLED...

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHERN NEW JERSEY. A SEVERE THUNDERSTORM WATCH ALSO
REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY EVENING FOR NORTHERN
DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY.

LAT...LON 3951 7499 3957 7506 3953 7519 3956 7525
      3949 7532 3945 7552 3947 7555 3950 7556
      3948 7558 3944 7557 3939 7576 3971 7579
      3978 7555 3980 7541 3992 7501 3964 7484
TIME...MOT...LOC 0031Z 267DEG 24KT 3962 7514

$$

DEC003-NJC007-015-033-230130-
/O.CON.KPHI.SV.W.0047.000000T0000Z-120623T0130Z/
CAMDEN NJ-GLOUCESTER NJ-NEW CASTLE DE-SALEM NJ-
831 PM EDT FRI JUN 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SALEM...NEW CASTLE...GLOUCESTER AND WESTERN CAMDEN COUNTIES...

AT 830 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 ELMER...OR 13 MILES NORTHWEST OF VINELAND...MOVING EAST
AT 30 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  FRANKLINVILLE AND MALAGA BY 840 PM EDT...
  NEWFIELD BY 845 PM EDT...
  VICTORY LAKES...MONROE TOWNSHIP...WILLIAMSTOWN AND 6 MILES SOUTH OF
  SICKLERVILLE BY 850 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHERN NEW JERSEY. A SEVERE THUNDERSTORM WATCH ALSO
REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY EVENING FOR NORTHERN
DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY.

&&

LAT...LON 3951 7499 3957 7506 3953 7519 3956 7525
      3949 7532 3945 7552 3947 7555 3950 7556
      3948 7558 3944 7557 3939 7576 3971 7579
      3978 7555 3980 7541 3992 7501 3964 7484
TIME...MOT...LOC 0031Z 267DEG 24KT 3962 7514

$$

NIERENBERG

065 
WWUS51 KPHI 230053
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
853 PM EDT FRI JUN 22 2012

DEC003-230103-
/O.CAN.KPHI.SV.W.0047.000000T0000Z-120623T0130Z/
NEW CASTLE DE-
853 PM EDT FRI JUN 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL NEW CASTLE COUNTY IS
CANCELLED...

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHERN NEW JERSEY. A SEVERE THUNDERSTORM WATCH ALSO
REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY EVENING FOR NORTHERN
DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY.

LAT...LON 3951 7499 3957 7506 3953 7519 3956 7525
      3949 7532 3945 7552 3947 7555 3955 7554
      3957 7552 3958 7553 3973 7547 3980 7537
      3992 7501 3964 7484
TIME...MOT...LOC 0053Z 267DEG 24KT 3963 7495

$$

NJC007-015-033-230130-
/O.CON.KPHI.SV.W.0047.000000T0000Z-120623T0130Z/
CAMDEN NJ-GLOUCESTER NJ-SALEM NJ-
853 PM EDT FRI JUN 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT
FOR SALEM...GLOUCESTER AND WESTERN CAMDEN COUNTIES...

AT 851 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
 THIS STORM WAS LOCATED NEAR VICTORY LAKES...OR 11 MILES NORTH OF
VINELAND...MOVING EAST AT 30 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR SOUTHERN NEW JERSEY. A SEVERE THUNDERSTORM WATCH ALSO
REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY EVENING FOR NORTHERN
DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW JERSEY.

&&

LAT...LON 3951 7499 3957 7506 3953 7519 3956 7525
      3949 7532 3945 7552 3947 7555 3955 7554
      3957 7552 3958 7553 3973 7547 3980 7537
      3992 7501 3964 7484
TIME...MOT...LOC 0053Z 267DEG 24KT 3963 7495

$$

NIERENBERG

089 
WWUS51 KPHI 230106
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
906 PM EDT FRI JUN 22 2012

NJC007-015-033-230117-
/O.CAN.KPHI.SV.W.0047.000000T0000Z-120623T0130Z/
CAMDEN NJ-GLOUCESTER NJ-SALEM NJ-
906 PM EDT FRI JUN 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR SALEM...GLOUCESTER AND WESTERN
CAMDEN COUNTIES IS CANCELLED...

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3951 7499 3957 7506 3953 7519 3956 7525
      3949 7532 3945 7552 3947 7555 3955 7554
      3957 7552 3958 7553 3973 7547 3980 7537
      3992 7501 3964 7484
TIME...MOT...LOC 0107Z 267DEG 24KT 3963 7483

$$

NIERENBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 10:12 AM EDT	Special Weather Statement	PHI	Ocean	33 min
Jun 22, 11:57 AM EDT	Special Weather Statement	PHI	Ocean	63 min
Jun 22, 12:15 PM EDT	Special Weather Statement	PHI	Ocean	60 min
Jun 22, 12:18 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	42 min
Jun 22, 12:21 PM EDT	Special Marine Warning	PHI		84 min
Jun 22, 12:23 PM EDT	Special Marine Warning	PHI		97 min
Jun 22, 12:44 PM EDT	Areal Flood Advisory	PHI	Ocean	2 hr
Jun 22, 12:53 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	52 min
Jun 22, 12:59 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	61 min
Jun 22, 1:10 PM EDT	Flash Flood Warning	PHI	Ocean	6 hr
Jun 22, 1:37 PM EDT	Special Weather Statement	PHI	Burlington	83 min
Jun 22, 1:42 PM EDT	Special Marine Warning	PHI		63 min
Jun 22, 1:46 PM EDT	Severe Thunderstorm Warning	PHI	Ocean	59 min
Jun 22, 1:49 PM EDT	Special Weather Statement	PHI	Ocean	56 min
Jun 22, 1:59 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	73 min
Jun 22, 2:04 PM EDT	Special Marine Warning	PHI		56 min
Jun 22, 2:31 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Monmouth, Ocean	119 min
Jun 22, 2:34 PM EDT	Special Weather Statement	PHI	Atlantic	56 min
Jun 22, 2:39 PM EDT	Special Marine Warning	PHI		96 min
Jun 22, 2:42 PM EDT	Special Weather Statement	PHI	Burlington, Ocean	63 min
Jun 22, 2:46 PM EDT	Special Weather Statement	PHI	Monmouth	59 min
Jun 22, 2:51 PM EDT	Special Marine Warning	PHI		54 min
Jun 22, 3:16 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Ocean	59 min
Jun 22, 3:28 PM EDT	Special Marine Warning	PHI		62 min
Jun 22, 3:40 PM EDT	Special Marine Warning	PHI		65 min
Jun 22, 3:43 PM EDT	Areal Flood Advisory	PHI	Atlantic	2 hr
Jun 22, 3:55 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex	65 min
Jun 22, 4:00 PM EDT	Flash Flood Warning	PHI	Burlington	43 min
Jun 22, 4:05 PM EDT	Special Marine Warning	PHI		85 min
Jun 22, 4:09 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	66 min
Jun 22, 4:11 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland	44 min
Jun 22, 4:15 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Ocean	60 min
Jun 22, 4:26 PM EDT	Special Marine Warning	PHI		94 min
Jun 22, 4:27 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Ocean	2 hr
Jun 22, 4:49 PM EDT	Special Weather Statement	PHI	Cape May	56 min
Jun 22, 5:00 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	45 min
Jun 22, 5:05 PM EDT	Special Weather Statement	PHI	Atlantic, Ocean	55 min
Jun 22, 5:16 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	59 min
Jun 22, 5:23 PM EDT	Special Marine Warning	PHI		97 min
Jun 22, 5:45 PM EDT	Severe Thunderstorm Warning	PHI	Middlesex, Monmouth, Morris, Somerset	42 min
Jun 22, 5:48 PM EDT	Special Weather Statement	PHI	Mercer	57 min
Jun 22, 5:54 PM EDT	Special Marine Warning	PHI		96 min
Jun 22, 6:13 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester, Mercer, Ocean, Salem	62 min
Jun 22, 6:16 PM EDT	Special Weather Statement	PHI	Burlington, Camden, Gloucester, Mercer, Ocean, Salem	119 min
Jun 22, 7:02 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	102 min
Jun 22, 7:04 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	56 min
Jun 22, 7:06 PM EDT	Severe Thunderstorm Warning	PHI	Salem	54 min
Jun 22, 7:30 PM EDT	Special Marine Warning	PHI		60 min
Jun 22, 7:42 PM EDT	Flash Flood Warning	PHI	Salem	93 min
Jun 22, 7:52 PM EDT	Flash Flood Warning	PHI	Burlington, Camden, Mercer, Monmouth	73 min
Jun 22, 6:13 PM EDT	Severe Thunderstorm Warning	PHI	Cecil	62 min
Jun 22, 7:31 PM EDT	Special Weather Statement	PHI	Kent	59 min
Jun 22, 1:01 PM EDT	Special Weather Statement	PHI	Sussex	29 min
Jun 22, 1:32 PM EDT	Areal Flood Advisory	PHI	Sussex	118 min
Jun 22, 2:09 PM EDT	Special Weather Statement	PHI	Sussex	66 min
Jun 22, 3:15 PM EDT	Special Weather Statement	PHI	Sussex	60 min
Jun 22, 3:30 PM EDT	Areal Flood Advisory	PHI	Sussex	2 hr
Jun 22, 3:38 PM EDT	Special Weather Statement	PHI	Sussex	67 min
Jun 22, 4:29 PM EDT	Special Weather Statement	PHI	Kent, Sussex	61 min
Jun 22, 5:33 PM EDT	Special Weather Statement	PHI	Sussex	57 min
Jun 22, 5:53 PM EDT	Areal Flood Advisory	PHI	Sussex	50 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2012 Severe Thunderstorm Warnings in Maryland, 2012 Severe Thunderstorm Warnings in Delaware, 2012 Every severe thunderstorm warning in 2012

Sources

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