Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 204, NWS Philadelphia/Mount Holly

July 6, 2019Hunterdon County, Warren County, New Jersey; Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2019, 3:43 PM EDT for Hunterdon County, Warren County, New Jersey; Northampton County, Pennsylvania. It was in force for 47 min. 3 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 6, 2019, 3:43 PM EDT (19:43 UTC)
Expired: Jul 6, 2019, 4:30 PM EDT
In force: 47 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Hunterdon County, NJ, Warren County, NJ, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 94 km from the middle of the area, began a volume at 19:44 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.

What was reported inside it

Time	Report	Where	Remark
Jul 6, 4:25 PM EDT	TSTM WND DMG	Clinton, NJ	TREE DOWN ON US 22. TIME ESTIMATED FROM RADAR.
Jul 6, 4:35 PM EDT	TSTM WND DMG	Lebanon, NJ	TREE DOWN ON US 22. TIME ESTIMATED FROM RADAR.
Jul 6, 4:40 PM EDT	TSTM WND DMG	Lebanon, NJ	TREE DOWN ON I-78 NEAR EXIT 20 (CR 639). TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 7.7 hours before the alert went out and 190 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.

503 
WUUS51 KPHI 061943
SVRPHI
NJC019-041-PAC095-062030-
/O.NEW.KPHI.SV.W.0204.190706T1943Z-190706T2030Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Central Hunterdon County in northwestern New Jersey...
  Southwestern Warren County in northwestern New Jersey...
  Southeastern Northampton County in eastern Pennsylvania...

* Until 430 PM EDT.

* At 342 PM EDT, a severe thunderstorm was located over Easton,
  moving east at 20 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible. Wind damage to 
           roofs, siding, trees, and power lines is possible.

* Locations impacted include...
  Easton, Forks, Wilson, Washington, Flemington, High Bridge,
  Clinton, Harmony, Alpha, Glen Gardner, Hampton, Frenchtown,
  Lebanon, West Easton, Milford, Tatamy, Califon, Bloomsbury,
  Riegelsville and Glendon.

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 4073 7476 4048 7483 4054 7507 4058 7512
      4058 7515 4056 7516 4057 7520 4059 7519
      4061 7520 4059 7525 4060 7530 4079 7526
TIME...MOT...LOC 1942Z 277DEG 16KT 4068 7518 

HAIL...1.00IN
WIND...60MPH
 
$$

Fitzsimmons

1 follow-up statement

525 
WWUS51 KPHI 062004
SVSPHI

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

NJC019-041-PAC095-062030-
/O.CON.KPHI.SV.W.0204.000000T0000Z-190706T2030Z/
Hunterdon NJ-Warren NJ-Northampton PA-
404 PM EDT Sat Jul 6 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR CENTRAL HUNTERDON...SOUTHWESTERN WARREN AND SOUTHEASTERN
NORTHAMPTON COUNTIES...

At 403 PM EDT, a severe thunderstorm was located over Bloomsbury, or
8 miles east of Easton, moving east at 20 mph.

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

SOURCE...Radar indicated. This storm is showing rotation and could 
         produce a tornado. 

IMPACT...Minor damage to vehicles is possible. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Easton, Washington, Flemington, High Bridge, Clinton, Harmony, Alpha,
Glen Gardner, Hampton, Lebanon, Milford, Califon, Bloomsbury,
Riegelsville, Brass Castle, Pleasant Valley, Annandale and
Phillipsburg.

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 4060 7523 4078 7516 4073 7476 4049 7483
      4055 7509 4058 7512 4058 7515 4057 7515
      4058 7519 4059 7519 4061 7520
TIME...MOT...LOC 2003Z 279DEG 16KT 4065 7506 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

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, 3:55 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, 4:41 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	49 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.