Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 207, NWS Philadelphia/Mount Holly

July 6, 2019Morris County, Sussex County, Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2019, 4:41 PM EDT for Morris County, Sussex County, Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 49 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: Jul 6, 2019, 4:41 PM EDT (20:41 UTC)
Expired: Jul 6, 2019, 5:30 PM EDT
In force: 49 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.88 in
Wind: 60.0 mph

Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 114 km from the middle of the area, began a volume at 20:44 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.7 hours before the alert went out and 162 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: 1195 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 542 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

Open this sounding in Storm Lab

The text

As transmitted.

588 
WUUS51 KPHI 062041
SVRPHI
NJC027-037-041-PAC089-095-062130-
/O.NEW.KPHI.SV.W.0207.190706T2041Z-190706T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
441 PM EDT Sat Jul 6 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Southwestern Morris County in northern New Jersey...
  Southwestern Sussex County in northwestern New Jersey...
  Northern Warren County in northwestern New Jersey...
  East central Monroe County in northeastern Pennsylvania...
  Northeastern Northampton County in eastern Pennsylvania...

* Until 530 PM EDT.

* At 441 PM EDT, a severe thunderstorm was located over Blairstown,
  or 12 miles southwest of Newton, moving southeast at 10 mph.

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

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Dover, Hopatcong, Hackettstown, Wharton, Blairstown, Mount
  Arlington, Stanhope, Netcong, Hope, Chester, Delaware Water Gap,
  Andover, Greendell, Millbrook, Long Valley, Great Meadows-Vienna,
  Allamuchy-Panther Valley, Succasunna, Succasunna-Kenvil and
  Columbia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4096 7451 4072 7473 4094 7517 4109 7502
TIME...MOT...LOC 2041Z 296DEG 10KT 4097 7497 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
 
$$

Fitzsimmons

2 follow-up statements

253 
WWUS51 KPHI 062105
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
505 PM EDT Sat Jul 6 2019

PAC089-095-062114-
/O.CAN.KPHI.SV.W.0207.000000T0000Z-190706T2130Z/
Monroe PA-Northampton PA-
505 PM EDT Sat Jul 6 2019

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MONROE AND
NORTHEASTERN NORTHAMPTON COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4095 7501 4107 7493 4096 7451 4084 7462
      4079 7467
TIME...MOT...LOC 2104Z 294DEG 13KT 4096 7478 

$$

NJC027-037-041-062130-
/O.CON.KPHI.SV.W.0207.000000T0000Z-190706T2130Z/
Morris NJ-Sussex NJ-Warren NJ-
505 PM EDT Sat Jul 6 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR WEST CENTRAL MORRIS...SOUTHWESTERN SUSSEX AND NORTHEASTERN WARREN
COUNTIES...

At 504 PM EDT, a severe thunderstorm was located over Greendell, or
near Newton, moving southeast at 15 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...
Dover, Hopatcong, Hackettstown, Wharton, Blairstown, Mount Arlington,
Stanhope, Netcong, Chester, Andover, Allamuchy-Panther Valley,
Succasunna, Succasunna-Kenvil, Greendell, Budd Lake, Lake Mohawk and
Great Meadows-Vienna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4095 7501 4107 7493 4096 7451 4084 7462
      4079 7467
TIME...MOT...LOC 2104Z 294DEG 13KT 4096 7478 

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

Fitzsimmons

879 
WWUS51 KPHI 062130
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
530 PM EDT Sat Jul 6 2019

NJC027-037-041-062139-
/O.EXP.KPHI.SV.W.0207.000000T0000Z-190706T2130Z/
Morris NJ-Sussex NJ-Warren NJ-
530 PM EDT Sat Jul 6 2019

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL MORRIS...
SOUTHWESTERN SUSSEX AND NORTHEASTERN WARREN COUNTIES WILL EXPIRE AT
530 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

LAT...LON 4095 7501 4107 7493 4096 7451 4084 7462
      4079 7467
TIME...MOT...LOC 2129Z 296DEG 10KT 4093 7471 

$$

Fitzsimmons

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 1:28 PM EDT	Areal Flood Advisory	PHI	Ocean	3 hr
Jul 6, 1:46 PM EDT	Flash Flood Warning	PHI	Ocean	4 hr
Jul 6, 1:52 PM EDT	Special Marine Warning	PHI		53 min
Jul 6, 2:05 PM EDT	Special Weather Statement	PHI	Burlington	25 min
Jul 6, 2:06 PM EDT	Special Weather Statement	PHI	Monmouth	24 min
Jul 6, 2:07 PM EDT	Special Marine Warning	PHI		53 min
Jul 6, 2:10 PM EDT	Special Weather Statement	PHI	Ocean	35 min
Jul 6, 2:13 PM EDT	Special Weather Statement	PHI	Cumberland	47 min
Jul 6, 2:17 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden	2 hr
Jul 6, 2:22 PM EDT	Special Marine Warning	PHI		53 min
Jul 6, 2:25 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Ocean	28 min
Jul 6, 2:26 PM EDT	Severe Thunderstorm Warning	PHI	Monmouth	34 min
Jul 6, 2:28 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Ocean	47 min
Jul 6, 2:29 PM EDT	Special Marine Warning	PHI		61 min
Jul 6, 2:40 PM EDT	Special Marine Warning	PHI		31 min
Jul 6, 2:58 PM EDT	Special Marine Warning	PHI		62 min
Jul 6, 3:04 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Cape May, Ocean	26 min
Jul 6, 3:22 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Ocean	37 min
Jul 6, 3:43 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	47 min
Jul 6, 3:55 PM EDT	Tornado Warning	PHI	Camden, Gloucester, Salem	50 min
Jul 6, 4:08 PM EDT	Tornado Warning	PHI	Hunterdon	25 min
Jul 6, 4:28 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Somerset	21 min
Jul 6, 4:39 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	32 min
Jul 6, 4:45 PM EDT	Areal Flood Advisory	PHI	Atlantic, Burlington, Camden, Gloucester	4 hr
Jul 6, 4:49 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Somerset, Sussex, Warren	4 hr
Jul 6, 4:54 PM EDT	Areal Flood Advisory	PHI	Burlington, Hunterdon, Mercer, Somerset, Warren	4 hr
Jul 6, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	17 min
Jul 6, 5:25 PM EDT	Severe Thunderstorm Warning	PHI	Mercer	50 min
Jul 6, 5:32 PM EDT	Flash Flood Warning	PHI	Warren	4 hr
Jul 6, 5:44 PM EDT	Areal Flood Advisory	PHI	Sussex	4 hr
Jul 6, 5:49 PM EDT	Areal Flood Advisory	PHI	Salem	4 hr
Jul 6, 6:13 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer	15 min
Jul 6, 6:22 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	38 min
Jul 6, 6:42 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester	30 min
Jul 6, 6:53 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris, Sussex, Warren	67 min
Jul 6, 7:33 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Cumberland, Gloucester, Salem	42 min
Jul 6, 7:45 PM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	45 min
Jul 6, 5:36 PM EDT	Tornado Warning	PHI	Bucks	24 min
Jul 6, 6:49 PM EDT	Flash Flood Warning	PHI	Monroe, Northampton	3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2019 Severe Thunderstorm Warnings in Pennsylvania, 2019 Every severe thunderstorm warning in 2019

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.