Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 39, NWS Philadelphia/Mount Holly

May 19, 2019Warren County, New Jersey; Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 19, 2019, 11:41 PM EDT for Warren County, New Jersey; Northampton County, Pennsylvania. It was in force for 53 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: May 19, 2019, 11:41 PM EDT (03:41 UTC)
Expired: May 20, 2019, 12:34 AM EDT
In force: 53 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Warren County, NJ, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 120 km from the middle of the area, began a volume at 03:41 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 00:00Z, 3.7 hours before the alert went out and 179 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: 61 J/kg
Mixed-layer CIN: -284 J/kg
Mixed-layer LCL: 581 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

As transmitted.

696 
WUUS51 KPHI 200341
SVRPHI
NJC041-PAC095-200445-
/O.NEW.KPHI.SV.W.0039.190520T0341Z-190520T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1141 PM EDT Sun May 19 2019

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Warren County in northwestern New Jersey...
  Northeastern Northampton County in eastern Pennsylvania...

* Until 1245 AM EDT.

* At 1140 PM EDT, a severe thunderstorm was located over Hope, or 17
  miles southwest of Newton, moving east at 55 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...
  Hackettstown, Washington, Blairstown, Belvidere, Oxford, Hope,
  Delaware Water Gap, Great Meadows-Vienna, Brass Castle,
  Allamuchy-Panther Valley, Millbrook, Columbia, Beatyestown,
  Roxburg, Portland and Beattyestown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

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

&&

LAT...LON 4091 7477 4088 7481 4086 7480 4079 7487
      4074 7508 4095 7518 4095 7515 4097 7512
      4097 7514 4099 7513 4104 7503 4106 7502
      4109 7496
TIME...MOT...LOC 0340Z 250DEG 49KT 4088 7499 

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

JJM

1 follow-up statement

848 
WWUS51 KPHI 200434
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1234 AM EDT Mon May 20 2019

NJC041-PAC095-200444-
/O.CAN.KPHI.SV.W.0039.000000T0000Z-190520T0445Z/
Warren NJ-Northampton PA-
1234 AM EDT Mon May 20 2019

...THE SEVERE THUNDERSTORM WARNING FOR WARREN AND NORTHEASTERN
NORTHAMPTON COUNTIES IS CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has 
been cancelled.  However heavy rain and small hail is still possible 
with this thunderstorm.

LAT...LON 4091 7477 4088 7481 4086 7480 4079 7487
      4074 7508 4095 7518 4095 7515 4097 7512
      4097 7514 4099 7513 4104 7503 4106 7502
      4109 7496
TIME...MOT...LOC 0431Z 250DEG 49KT 4113 7407 

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 9:46 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Morris, Somerset, Warren	44 min
May 19, 10:27 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more	48 min
May 19, 10:34 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more	3 hr
May 20, 1:03 AM EDT	Special Weather Statement	PHI	Morris, Warren	57 min
May 19, 8:14 PM EDT	Special Weather Statement	PHI	Lehigh	46 min
May 19, 8:35 PM EDT	Tornado Warning	PHI	Berks	25 min
May 19, 8:37 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh, Montgomery	38 min
May 19, 8:43 PM EDT	Flash Flood Warning	PHI	Berks	3 hr
May 19, 9:09 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	51 min
May 19, 9:29 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	4 hr
May 19, 10:48 PM EDT	Flash Flood Warning	PHI	Berks	117 min
May 19, 11:00 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	60 min
May 19, 11:15 PM EDT	Flash Flood Warning	PHI	Carbon, Lehigh, Monroe, Northampton	3 hr
May 19, 11:54 PM EDT	Severe Thunderstorm Warning	PHI	Lehigh, Northampton	39 min
May 20, 12:57 AM EDT	Areal Flood Advisory	PHI	Berks	3 hr
May 20, 1:21 AM EDT	Areal Flood Advisory	PHI	Berks, Montgomery	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.