Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 215, NWS Philadelphia/Mount Holly

July 6, 20194 counties in New Jersey; 7 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2019, 6:53 PM EDT for 4 counties in New Jersey; 7 counties in Pennsylvania. It was in force for 67 min. 4 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, 6:53 PM EDT (22:53 UTC)
Expired: Jul 6, 2019, 8:00 PM EDT
In force: 67 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Hunterdon County, NJ, Morris County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 106 km from the middle of the area, began a volume at 22:55 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, 7:08 PM EDT	TSTM WND DMG	3 Nw Mertztown, PA	TREE DOWN IN MAXATAWNY TWP. TIME ESTIMATED FROM RADAR.
Jul 6, 7:08 PM EDT	TSTM WND DMG	Wyomissing, PA	A COUPLE TREES DOWN IN WYOMISSING. TIME ESTIMATED FROM RADAR.
Jul 6, 7:13 PM EDT	TSTM WND DMG	2 Ne Reading, PA	TREE DOWN IN LOWER ALSACE TWP. TIME ESTIMATED FROM RADAR.
Jul 6, 7:24 PM EDT	TSTM WND GST 54	1 Ne Reading, PA

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, 10.9 hours before the alert went out and 180 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.

806 
WUUS51 KPHI 062253
SVRPHI
NJC019-027-037-041-PAC011-017-029-077-089-091-095-070000-
/O.NEW.KPHI.SV.W.0215.190706T2253Z-190707T0000Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Morris County in northern New Jersey...
  Northern Hunterdon County in northwestern New Jersey...
  Sussex County in northwestern New Jersey...
  Warren County in northwestern New Jersey...
  Berks County in eastern Pennsylvania...
  Northwestern Montgomery County in southeastern Pennsylvania...
  Lehigh County in eastern Pennsylvania...
  Northwestern Bucks County in southeastern Pennsylvania...
  North central Chester County in southeastern Pennsylvania...
  Southeastern Monroe County in northeastern Pennsylvania...
  Northampton County in eastern Pennsylvania...

* Until 800 PM EDT.

* At 653 PM EDT, severe thunderstorms were located along a line
  extending from near Unionville to near Nazareth to near Cornwall,
  moving southeast at 25 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Allentown, Reading, Easton, Newton, Bethlehem, Pottstown, Dover,
  Hopatcong, Forks, Emmaus, Wyomissing, Kinnelon, Northampton, East
  Stroudsburg, Hackettstown, Quakertown, Boonton, Wilson, Butler and
  Wharton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Mount Holly NJ.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

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

&&

LAT...LON 4120 7437 4110 7449 4104 7450 4105 7445
      4102 7443 4100 7430 4094 7428 4008 7593
      4011 7594 4014 7588 4038 7625 4039 7624
      4131 7459
TIME...MOT...LOC 2253Z 297DEG 23KT 4127 7454 4080 7537 4025 7636 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

MPS

4 follow-up statements

612 
WWUS51 KPHI 062313
SVSPHI

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

PAC089-062323-
/O.CAN.KPHI.SV.W.0215.000000T0000Z-190707T0000Z/
Monroe PA-
713 PM EDT Sat Jul 6 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONROE COUNTY IS
CANCELLED...

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

LAT...LON 4029 7611 4078 7529 4107 7487 4088 7439
      4008 7593 4011 7594 4014 7588
TIME...MOT...LOC 2313Z 306DEG 20KT 4099 7488 4075 7523 4026 7605 

$$

NJC019-027-037-041-PAC011-017-029-077-091-095-070000-
/O.CON.KPHI.SV.W.0215.000000T0000Z-190707T0000Z/
Morris NJ-Hunterdon NJ-Sussex NJ-Warren NJ-Berks PA-Montgomery PA-
Lehigh PA-Bucks PA-Chester PA-Northampton PA-
713 PM EDT Sat Jul 6 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR CENTRAL MORRIS...NORTHERN HUNTERDON...SOUTHWESTERN SUSSEX...
WARREN...SOUTHEASTERN BERKS...NORTHWESTERN MONTGOMERY...SOUTHEASTERN
LEHIGH...NORTHWESTERN BUCKS...NORTH CENTRAL CHESTER AND CENTRAL
NORTHAMPTON COUNTIES...

At 713 PM EDT, severe thunderstorms were located along a line
extending from near Greendell to Tatamy to Adamstown, moving
southeast at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Allentown, Reading, Easton, Bethlehem, Pottstown, Dover, Hopatcong,
Forks, Emmaus, Wyomissing, Hackettstown, Quakertown, Wilson, Wharton,
Washington, Rockaway, Blairstown, Hellertown, Nazareth and Morris
Plains.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.

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

&&

LAT...LON 4029 7611 4078 7529 4107 7487 4088 7439
      4008 7593 4011 7594 4014 7588
TIME...MOT...LOC 2313Z 306DEG 20KT 4099 7488 4075 7523 4026 7605 

HAIL...<.75IN
WIND...60MPH
 
$$

MPS

917 
WWUS51 KPHI 062331
SVSPHI

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

NJC027-037-062340-
/O.CAN.KPHI.SV.W.0215.000000T0000Z-190707T0000Z/
Morris NJ-Sussex NJ-
731 PM EDT Sat Jul 6 2019

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MORRIS AND
SOUTHWESTERN SUSSEX COUNTIES IS CANCELLED...

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

LAT...LON 4026 7595 4095 7489 4080 7485 4079 7489
      4076 7484 4066 7482 4008 7593 4011 7594
      4014 7588 4019 7595
TIME...MOT...LOC 2330Z 357DEG 25KT 4086 7497 4054 7544 4026 7588 

$$

NJC019-041-PAC011-017-029-077-091-095-070000-
/O.CON.KPHI.SV.W.0215.000000T0000Z-190707T0000Z/
Hunterdon NJ-Warren NJ-Berks PA-Montgomery PA-Lehigh PA-Bucks PA-
Chester PA-Northampton PA-
731 PM EDT Sat Jul 6 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHWESTERN HUNTERDON...SOUTHERN WARREN...SOUTHEASTERN BERKS...
NORTHWESTERN MONTGOMERY...SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS...
NORTH CENTRAL CHESTER AND SOUTHEASTERN NORTHAMPTON COUNTIES...

At 730 PM EDT, severe thunderstorms were located along a line
extending from near Oxford to near Emmaus to near Birdsboro, moving
south at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Allentown, Easton, Bethlehem, Pottstown, Forks, Emmaus, Quakertown,
Wilson, Washington, Hellertown, Birdsboro, High Bridge, East
Greenville, Clinton, Belvidere, Harmony, Oxford, Alpha, Honey Brook
and Glen Gardner.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.

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

&&

LAT...LON 4026 7595 4095 7489 4080 7485 4079 7489
      4076 7484 4066 7482 4008 7593 4011 7594
      4014 7588 4019 7595
TIME...MOT...LOC 2330Z 357DEG 25KT 4086 7497 4054 7544 4026 7588 

HAIL...<.75IN
WIND...60MPH
 
$$

MPS

868 
WWUS51 KPHI 062347
SVSPHI

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

NJC019-041-PAC011-017-029-077-091-095-070000-
/O.CON.KPHI.SV.W.0215.000000T0000Z-190707T0000Z/
Hunterdon NJ-Warren NJ-Berks PA-Montgomery PA-Lehigh PA-Bucks PA-
Chester PA-Northampton PA-
747 PM EDT Sat Jul 6 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHWESTERN HUNTERDON...SOUTHERN WARREN...SOUTHEASTERN BERKS...
NORTHWESTERN MONTGOMERY...SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS...
NORTH CENTRAL CHESTER AND SOUTH CENTRAL NORTHAMPTON COUNTIES...

At 747 PM EDT, severe thunderstorms were located along a line
extending from Beatyestown to near Pleasant Valley to near
Cedarville, moving southeast at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Pottstown, Quakertown, Washington, High Bridge, East Greenville,
Clinton, Oxford, Alpha, Glen Gardner, Ferndale, Hampton, Frenchtown,
Lebanon, Milford, Elverson, Califon, Bechtelsville, Bloomsbury,
Riegelsville and Green Lane.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.

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

&&

LAT...LON 4014 7582 4019 7590 4052 7539 4088 7487
      4080 7485 4079 7489 4076 7484 4066 7482
TIME...MOT...LOC 2347Z 297DEG 23KT 4081 7484 4049 7531 4021 7575 

HAIL...<.75IN
WIND...60MPH
 
$$

MPS

272 
WWUS51 KPHI 062357
SVSPHI

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

NJC019-041-PAC011-017-029-077-091-095-070007-
/O.EXP.KPHI.SV.W.0215.000000T0000Z-190707T0000Z/
Hunterdon NJ-Warren NJ-Berks PA-Montgomery PA-Lehigh PA-Bucks PA-
Chester PA-Northampton PA-
757 PM EDT Sat Jul 6 2019

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN HUNTERDON...
SOUTHERN WARREN...SOUTHEASTERN BERKS...NORTHWESTERN MONTGOMERY...
SOUTHEASTERN LEHIGH...NORTHWESTERN BUCKS...NORTH CENTRAL CHESTER AND
SOUTH CENTRAL NORTHAMPTON COUNTIES WILL EXPIRE AT 800 PM EDT...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.

LAT...LON 4014 7582 4019 7590 4052 7539 4088 7487
      4080 7485 4079 7489 4076 7484 4066 7482
TIME...MOT...LOC 2357Z 297DEG 23KT 4079 7478 4047 7525 4018 7569 

$$

MPS

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, 4:41 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, 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 Pennsylvania, 2019 Severe Thunderstorm Warnings in New Jersey, 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.