Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 182, NWS Philadelphia/Mount Holly

July 19, 2011Cumberland County, Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 19, 2011, 7:08 PM EDT for Cumberland County, Salem County, New Jersey. It was in force for 52 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 19, 2011, 7:08 PM EDT (23:08 UTC)
Expired: Jul 19, 2011, 8:00 PM EDT
In force: 52 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon

Counties Cumberland County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 69 km from the middle of the area, began a volume at 23:10 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 19, 7:13 PM EDT	TSTM WND DMG	Upper Deerfield Twp, NJ	TREES DOWN.
Jul 19, 7:15 PM EDT	TSTM WND DMG	Mannington Twp, NJ	TREES DOWN
Jul 19, 7:30 PM EDT	TSTM WND DMG	Quinton, NJ	TREES DOWN
Jul 19, 7:45 PM EDT	TSTM WND DMG	Lawrence Twp, NJ	TREE DOWN ON HOUSE IN LAWRENCE TWP
Jul 19, 7:52 PM EDT	TSTM WND DMG	Newport, NJ	NUMEROUS TREES DOWN AND ROAD FLOODING
Jul 19, 7:55 PM EDT	TSTM WND DMG	Downe Twp, NJ	TREES AND WIRES DOWN IN DOWNE TWP

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, 11.1 hours before the alert went out and 85 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: 1090 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1062 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.6

Open this sounding in Storm Lab

The text

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

027 
WUUS51 KPHI 192308
SVRPHI
NJC011-033-200000-
/O.NEW.KPHI.SV.W.0182.110719T2308Z-110720T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
708 PM EDT TUE JUL 19 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...
  SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 800 PM EDT

* AT 702 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM IN EASTERN SALEM COUNTY EXTENDING INTO         
  NORTHERN CUMBERLAND COUNTY.  THIS STORM WAS MOVING SOUTHEAST AT 15 
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  6 MILES SOUTH OF ROSENHAYN AROUND 715 PM EDT...
  7 MILES NORTH OF NEWPORT AROUND 725 PM EDT...
  CEDARVILLE AND 8 MILES SOUTH OF SEABROOK FARMS AROUND 730 PM EDT...
  FAIRTON AND BRIDGETON AROUND 735 PM EDT...
  SHILOH AROUND 750 PM EDT...
  GREENWICH AROUND 800 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

HEAVY RAIN WILL ALSO OCCUR WITH THESE STORMS AND CAUSE LOW-LYING AND 
POOR DRAINAGE FLOODING.

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 3932 7487 3922 7490 3920 7494 3917 7491
      3918 7503 3920 7505 3920 7510 3918 7513
      3924 7520 3961 7559 3969 7549 3974 7539
      3968 7532 3966 7522 3962 7514 3942 7486
TIME...MOT...LOC 2307Z 086DEG 12KT 3940 7510

$$

JJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 6:02 AM EDT	Heat Advisory	PHI	Burlington, Camden, Gloucester, Mercer, Salem	13 hr
Jul 19, 2:13 PM EDT	Special Weather Statement	PHI	Cape May, Cumberland	92 min
Jul 19, 2:29 PM EDT	Excessive Heat Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more	5 days
Jul 19, 4:11 PM EDT	Special Marine Warning	PHI		64 min
Jul 19, 4:25 PM EDT	Special Weather Statement	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more	80 min
Jul 19, 5:04 PM EDT	Areal Flood Advisory	PHI	Cape May	3 hr
Jul 19, 5:52 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cumberland, Salem	53 min
Jul 19, 6:00 PM EDT	Special Weather Statement	PHI	Camden, Gloucester	90 min
Jul 19, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Gloucester	55 min
Jul 19, 6:28 PM EDT	Areal Flood Advisory	PHI	Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem	3 hr
Jul 19, 7:28 PM EDT	Areal Flood Advisory	PHI	Cumberland, Salem	3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2011 Every severe thunderstorm warning in 2011

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.