Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 310, NWS Philadelphia/Mount Holly

August 6, 2019Northampton County, Pennsylvania; Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 6, 2019, 7:32 PM EDT for Northampton County, Pennsylvania; Warren County, New Jersey. It was in force for 43 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
Aug 6, 2019, 7:32 PM EDT (23:32 UTC)
Expired
Aug 6, 2019, 8:15 PM EDT
In force
43 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Warren County, NJ, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 107 km from the middle of the area, began a volume at 23:35 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 6, 7:38 PM EDTTSTM WND DMG4 E Washington Twp, PADOWNED TREE ON STATE HIGHWAY 611. TIME ESTIMATED FROM RADAR.
Aug 6, 7:40 PM EDTTSTM WND DMGBelvidere, NJTREE DOWN INTO THE ROADWAY NEAR 312 WATER STREET. TIME ESTIMATED FROM RADAR.
Aug 6, 7:42 PM EDTTSTM WND DMGBelvidere, NJSEVERAL TREES REPORTED DOWN IN BELVIDERE. TIME ESTIMATED FROM RADAR.
Aug 6, 7:46 PM EDTTSTM WND DMG2 N Roxburg, NJTREE ONTO WIRES AND ON FIRE ON FOUL RIFT ROAD. TIME ESTIMATED FROM RADAR.
Aug 6, 7:50 PM EDTTSTM WND DMG2 Ese Belvidere, NJTREES DOWN ONTO WIRES AND ON FIRE. TIME ESTIMATED FROM RADAR.
Aug 6, 8:10 PM EDTTSTM WND DMG2 Nnw Brass Castle, NJTREE DOWN ACROSS THE ROADWAY AT BRASS CASTLE ROAD AND FOX CHASE ROAD. 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, 11.5 hours before the alert went out and 175 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 2019-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 57 joules per kilogram.LCLLFCEL10008507005003002001001 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 2019-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.193958Sfc1 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
57 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1078 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
18 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

868 
WUUS51 KPHI 062332
SVRPHI
NJC041-PAC095-070015-
/O.NEW.KPHI.SV.W.0310.190806T2332Z-190807T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
732 PM EDT Tue Aug 6 2019

The National Weather Service in Mount Holly NJ has issued a

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

* Until 815 PM EDT.

* At 731 PM EDT, a severe thunderstorm was located over Belvidere, or
  10 miles northeast of 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...
  Hackettstown, Washington, Bangor, Belvidere, Oxford, East Bangor,
  Great Meadows-Vienna, Brass Castle, Pleasant Valley, Roxburg,
  Beatyestown, Allamuchy-Panther Valley 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.

&&

LAT...LON 4090 7480 4082 7483 4079 7487 4078 7490
      4077 7490 4073 7495 4079 7524 4091 7520
TIME...MOT...LOC 2331Z 287DEG 15KT 4082 7510 

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

Gorse
1 follow-up statement
203 
WWUS51 KPHI 062347
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
747 PM EDT Tue Aug 6 2019

NJC041-PAC095-070015-
/O.CON.KPHI.SV.W.0310.000000T0000Z-190807T0015Z/
Warren NJ-Northampton PA-
747 PM EDT Tue Aug 6 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR CENTRAL WARREN AND NORTHEASTERN NORTHAMPTON COUNTIES...

At 747 PM EDT, a severe thunderstorm was located over Belvidere, or
11 miles northeast of Easton, moving east at 10 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, Bangor, Belvidere, Oxford, East Bangor,
Great Meadows-Vienna, Brass Castle, Pleasant Valley, Roxburg,
Beatyestown, Allamuchy-Panther Valley and Beattyestown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. 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 4090 7480 4082 7483 4079 7487 4078 7490
      4077 7490 4073 7495 4079 7524 4091 7520
TIME...MOT...LOC 2347Z 287DEG 9KT 4081 7506 

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

Gorse

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 11:46 AM EDTSpecial Weather StatementPHIPhiladelphia29 min
Aug 6, 12:13 PM EDTSpecial Weather StatementPHIPhiladelphia47 min
Aug 6, 12:21 PM EDTAreal Flood AdvisoryPHIMontgomery, Philadelphia102 min
Aug 6, 12:36 PM EDTSevere Thunderstorm WarningPHIMontgomery, Philadelphia39 min
Aug 6, 1:18 PM EDTSpecial Weather StatementPHIBucks27 min
Aug 6, 2:35 PM EDTSpecial Weather StatementPHIMonroe25 min
Aug 6, 3:05 PM EDTSpecial Weather StatementPHIMonroe25 min
Aug 6, 4:40 PM EDTSpecial Weather StatementPHICarbon35 min
Aug 6, 5:51 PM EDTSpecial Weather StatementPHIMonroe39 min
Aug 6, 6:32 PM EDTSpecial Weather StatementPHIMonroe28 min
Aug 6, 6:38 PM EDTSpecial Weather StatementPHICarbon37 min
Aug 6, 6:57 PM EDTFlash Flood WarningPHIMonroe104 min
Aug 6, 7:10 PM EDTSpecial Weather StatementPHINorthampton35 min
Aug 6, 9:04 AM EDTAreal Flood AdvisoryPHIAtlantic74 min
Aug 6, 12:05 PM EDTSpecial Weather StatementPHICumberland40 min
Aug 6, 12:51 PM EDTAreal Flood AdvisoryPHICumberland108 min
Aug 6, 1:09 PM EDTSpecial Weather StatementPHIGloucester36 min
Aug 6, 1:13 PM EDTSpecial Weather StatementPHIMonmouth32 min
Aug 6, 1:14 PM EDTSpecial Weather StatementPHIOcean31 min
Aug 6, 1:30 PM EDTSpecial Weather StatementPHIGloucester30 min
Aug 6, 1:34 PM EDTSpecial Weather StatementPHIAtlantic41 min
Aug 6, 1:38 PM EDTSpecial Weather StatementPHIMonmouth37 min
Aug 6, 1:50 PM EDTSpecial Weather StatementPHIOcean40 min
Aug 6, 2:14 PM EDTAreal Flood AdvisoryPHIAtlantic, Cape May, Cumberland3 hr
Aug 6, 2:19 PM EDTSpecial Weather StatementPHIAtlantic41 min
Aug 6, 2:33 PM EDTSpecial Weather StatementPHIOcean27 min
Aug 6, 3:07 PM EDTSpecial Weather StatementPHIBurlington23 min
Aug 6, 3:30 PM EDTSmall Craft AdvisoryPHI36 hr
Aug 6, 3:55 PM EDTSpecial Weather StatementPHIMiddlesex, Somerset50 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2019Severe Thunderstorm Warnings in New Jersey, 2019Every 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.