Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 280, NWS Philadelphia/Mount Holly

August 28, 20205 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 28, 2020, 4:49 PM EDT for 5 counties in New Jersey. It was in force for 56 min. 12 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
Aug 28, 2020, 4:49 PM EDT (20:49 UTC)
Expired
Aug 28, 2020, 5:45 PM EDT
In force
56 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
70.0 mph

Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 16 km from the middle of the area, began a volume at 20:50 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

TimeReportWhereRemark
Aug 28, 4:53 PM EDTTSTM WND DMG1 Sse Trenton, NJDOWNED TREE LIMBS AND WIRES NEAR BUNTING AVENUE. TIME ESTIMATED FROM RADAR.
Aug 28, 4:55 PM EDTTSTM WND DMG1 Ne Bordentown, NJDOWNED TREES AND WIRES NEAR AMBOY ROAD AND U.S. HIGHWAY 206. TIME ESTIMATED FROM RADAR.
Aug 28, 4:55 PM EDTTSTM WND DMG2 Wsw Yardville, NJDOWNED POWER LINES NEAR GROVEVILLE ROAD. TIME ESTIMATED FROM RADAR.
Aug 28, 4:57 PM EDTTSTM WND DMG1 Nne Columbus, NJTREES CAUSED POWER OUTAGE AT US 206 AND MANSFIELD RD. EAST. TIME ESTIMATED FROM RADAR.
Aug 28, 5:06 PM EDTTSTM WND DMG1 Nw Allentown, NJDOWNED POWER LINES NEAR CIRCLE DRIVE IN ALLENTOWN. TIME ESTIMATED FROM RADAR.
Aug 28, 5:06 PM EDTTSTM WND DMGNorth Hanover Twp, NJDOWNED TREES AND WIRES NEAR THE ELLISDALE-CROSSWICKS ROAD AND PROVINCE LINE ROAD INTERSECTION. TIME ESTIMATED FROM RADAR.
Aug 28, 5:30 PM EDTTSTM WND DMG1 W Toms River, NJSEVERAL REPORTS OF DOWNED TREES AND POWER LINES WITH NUMEROUS POWER OUTAGES IN THE TOMS RIVER AREA. TIME ESTIMATED FROM RADAR.
Aug 28, 5:35 PM EDTTSTM WND DMGForked River, NJDOWNED TREES AND POWER LINES IN SEVERAL LOCATIONS IN FORKED RIVER. TIME ESTIMATED FROM RADAR.
Aug 28, 5:38 PM EDTTSTM WND DMGLacey Twp, NJSEVERAL TREES DOWNED AS THE BOW ECHO MOVED ACROSS THE COUNTY. TIME ESTIMATED FROM RADAR.
Aug 28, 5:40 PM EDTTSTM WND DMG1 Nnw Ocean Gate, NJSEVERAL REPORTS OF TREES AND POWER LINES DOWN IN THE ISLAND HEIGHTS AREA. TIME ESTIMATED FROM RADAR.
Aug 28, 5:43 PM EDTTSTM WND DMG2 Ssw Seaside Park, NJSEVERAL REPORTS OF DOWNED POWER LINES NEAR CENTRAL AVENUE IN BERKELEY. TIME ESTIMATED FROM RADAR.
Aug 28, 5:48 PM EDTMARINE TSTM WIND 40Mantoloking, NJHADS SENSOR.

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.

IssuedProductOfficeLasted
Aug 28, 1:37 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.8 hours before the alert went out and 173 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2020-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2020-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1018 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

290 
WUUS51 KPHI 282049
SVRPHI
NJC005-021-023-025-029-282145-
/O.NEW.KPHI.SV.W.0280.200828T2049Z-200828T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
449 PM EDT Fri Aug 28 2020

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Ocean County in southern New Jersey...
  Southeastern Mercer County in central New Jersey...
  Burlington County in southern New Jersey...
  Monmouth County in central New Jersey...
  Southwestern Middlesex County in northern New Jersey...

* Until 545 PM EDT.

* At 449 PM EDT, severe thunderstorms were located along a line 
  extending from near Mercerville-Hamilton Square to near Voorhees, 
  moving southeast at 45 mph.

  HAZARD...70 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings.

* Locations impacted include...
  Toms River, Trenton, Long Branch, Asbury Park, Lakewood, Jackson,
  Howell, Evesham, Mount Laurel, Manalapan, Medford, Barnegat, Tinton
  Falls, Lumberton, Princeton, Florence, Beachwood, Burlington, Mount
  Holly and Tabernacle.

This includes the following highways...
 New Jersey Turnpike between exits 5 and 8A.
 Interstate 195 in New Jersey between mile markers 0 and 34.
 Interstate 295 in New Jersey between mile markers 40 and 69.
 Garden State Parkway between mile markers 60 and 105.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4026 7396 4000 7397 3961 7404 3972 7473
      3979 7481 3979 7490 3988 7493 3991 7495
      4013 7482 4012 7478 4015 7472 4021 7477
      4035 7469
TIME...MOT...LOC 2049Z 313DEG 40KT 4024 7469 3986 7493 

HAIL...0.75IN
WIND...70MPH
 
$$

Iovino
1 follow-up statement
726 
WWUS51 KPHI 282133
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
533 PM EDT Fri Aug 28 2020

NJC021-023-282142-
/O.CAN.KPHI.SV.W.0280.000000T0000Z-200828T2145Z/
Mercer NJ-Middlesex NJ-
533 PM EDT Fri Aug 28 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MERCER AND
SOUTHWESTERN MIDDLESEX COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southern New Jersey.

LAT...LON 4026 7396 4012 7397 4000 7397 3961 7404
      3969 7452 4030 7430
TIME...MOT...LOC 2132Z 285DEG 37KT 4010 7417 3972 7441 

$$

NJC005-025-029-282145-
/O.CON.KPHI.SV.W.0280.000000T0000Z-200828T2145Z/
Ocean NJ-Burlington NJ-Monmouth NJ-
533 PM EDT Fri Aug 28 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR OCEAN...EAST CENTRAL BURLINGTON AND SOUTHEASTERN MONMOUTH
COUNTIES...

At 532 PM EDT, severe thunderstorms were located along a line
extending from Ramtown to near Warren Grove, moving east at 45 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Toms River, Long Branch, Asbury Park, Lakewood, Jackson, Howell,
Barnegat, Tinton Falls, Beachwood, Manasquan, Point Pleasant Beach,
Seaside Heights, Lakehurst, Farmingdale, Surf City, Mantoloking,
Allenwood, East Freehold, West Freehold and Adelphia.

This includes the following highways...
 Interstate 195 in New Jersey between mile markers 21 and 34.
 Garden State Parkway between mile markers 60 and 105.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Protecting yourself from immediate threats to life and safety shall
take priority.  Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4026 7396 4012 7397 4000 7397 3961 7404
      3969 7452 4030 7430
TIME...MOT...LOC 2132Z 285DEG 37KT 4010 7417 3972 7441 

HAIL...0.75IN
WIND...60MPH
 
$$

Iovino

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 8:13 PM EDTSevere Thunderstorm WarningPHIHunterdon, Somerset, Warren47 min
Aug 27, 8:24 PM EDTSpecial Weather StatementPHIMiddlesex, Somerset51 min
Aug 27, 8:29 PM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset46 min
Aug 27, 8:55 PM EDTSpecial Marine WarningPHI95 min
Aug 27, 9:13 PM EDTSpecial Weather StatementPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset47 min
Aug 27, 9:28 PM EDTSevere Thunderstorm WarningPHIMercer, Middlesex, Monmouth, Ocean, Somerset47 min
Aug 28, 3:05 PM EDTSpecial Marine WarningPHI85 min
Aug 28, 3:41 PM EDTSpecial Weather StatementPHISalem34 min
Aug 28, 3:52 PM EDTSevere Thunderstorm WarningPHICumberland, Gloucester, Salem53 min
Aug 28, 3:53 PM EDTSpecial Marine WarningPHI67 min
Aug 28, 4:07 PM EDTSpecial Marine WarningPHI53 min
Aug 28, 4:17 PM EDTSevere Thunderstorm WarningPHICape May43 min
Aug 28, 4:29 PM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Mercer61 min
Aug 28, 4:39 PM EDTSevere Thunderstorm WarningPHICamden, Cumberland, Gloucester, Salem66 min
Aug 28, 4:55 PM EDTSpecial Marine WarningPHI95 min
Aug 28, 5:13 PM EDTSpecial Marine WarningPHI92 min
Aug 28, 5:28 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more47 min
Aug 28, 5:37 PM EDTSpecial Marine WarningPHI83 min
Aug 28, 5:51 PM EDTSpecial Marine WarningPHI84 min
Aug 28, 6:53 PM EDTSpecial Marine WarningPHI64 min
Aug 28, 7:55 PM EDTSpecial Marine WarningPHI65 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2020Every severe thunderstorm warning in 2020

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.