Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 151, NWS Philadelphia/Mount Holly

July 17, 2024Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 17, 2024, 6:40 PM EDT for Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 65 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 17, 2024, 6:40 PM EDT (22:40 UTC)
Expired: Jul 17, 2024, 7:45 PM EDT
In force: 65 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The Philadelphia radar (KDIX), 141 km from the middle of the area, began a volume at 22:43 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 17, 7:02 PM EDT	TSTM WND DMG	3 Ne Brodheadsville, PA	Trees down on wires resulting in a fire. Time estimated from radar.
Jul 17, 7:06 PM EDT	TSTM WND DMG	1 Nnw East Stroudsburg, PA	Trees down on wires resulting in a fire near Colbert Street in Stroudsbourg, PA. Time estimated from radar.
Jul 17, 7:06 PM EDT	TSTM WND DMG	2 Ssw Hernyville, PA	Tree down blocking the roadway on Cherry Lane Road. Time estimated from radar.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 17, 12:58 PM EDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.7 hours before the alert went out and 199 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: 117 J/kg
Mixed-layer CIN: -236 J/kg
Mixed-layer LCL: 1231 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

695 
WUUS51 KPHI 172240
SVRPHI
NJC041-PAC089-095-172345-
/O.NEW.KPHI.SV.W.0151.240717T2240Z-240717T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
640 PM EDT Wed Jul 17 2024

The National Weather Service in Mount Holly NJ has issued a

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

* Until 745 PM EDT.

* At 640 PM EDT, a severe thunderstorm was located over Gilbert, or
  13 miles south of Mount Pocono, moving northeast at 30 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...
  Mount Pocono, East Stroudsburg, Blairstown, Pen Argyl, Stormville,
  Henryville, Brodheadsville, Kunkletown, Werry Lake, Gilbert,
  Millbrook, Delaware Water Gap, Tannersville, Alpine Mountain,
  Rossland, Kresgeville, Sun Valley, Jonas, Reeders, and Saylorsburg.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 297 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 4.
 Interstate 380 in Pennsylvania near mile marker 0.

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 4115 7515 4114 7509 4108 7503 4110 7497
      4100 7486 4081 7547 4095 7557 4098 7550
      4101 7551 4125 7513
TIME...MOT...LOC 2240Z 237DEG 28KT 4093 7544 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Staarmann

2 follow-up statements

970 
WWUS51 KPHI 172256
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
656 PM EDT Wed Jul 17 2024

NJC041-PAC089-095-172345-
/O.CON.KPHI.SV.W.0151.000000T0000Z-240717T2345Z/
Warren NJ-Monroe PA-Northampton PA-
656 PM EDT Wed Jul 17 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHWESTERN WARREN...MONROE AND NORTHEASTERN NORTHAMPTON
COUNTIES...

At 656 PM EDT, a severe thunderstorm was located over Tannersville,
or 8 miles southeast of Mount Pocono, moving northeast at 35 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...
Mount Pocono, East Stroudsburg, Blairstown, Pen Argyl, Stormville,
Henryville, Brodheadsville, Kunkletown, Werry Lake, Gilbert,
Millbrook, Delaware Water Gap, Tannersville, Alpine Mountain,
Rossland, Kresgeville, Sun Valley, Jonas, Reeders, and Saylorsburg.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 297 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 4.
 Interstate 380 in Pennsylvania near mile marker 0.

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 4115 7515 4114 7509 4108 7503 4110 7497
      4100 7486 4081 7547 4095 7557 4098 7550
      4101 7551 4125 7513
TIME...MOT...LOC 2256Z 235DEG 29KT 4102 7529 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Staarmann

875 
WWUS51 KPHI 172331
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
731 PM EDT Wed Jul 17 2024

NJC041-PAC089-095-172345-
/O.CON.KPHI.SV.W.0151.000000T0000Z-240717T2345Z/
Warren NJ-Monroe PA-Northampton PA-
731 PM EDT Wed Jul 17 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHWESTERN WARREN...CENTRAL MONROE AND NORTHEASTERN NORTHAMPTON
COUNTIES...

At 731 PM EDT, a severe thunderstorm was located near Blairstown, or
9 miles west of Newton, moving east 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...
Mount Pocono, East Stroudsburg, Blairstown, Pen Argyl, Stormville,
Henryville, Werry Lake, Millbrook, Delaware Water Gap, Tannersville,
Alpine Mountain, Reeders, Analomink, Scotrun, Echo Lake, Paradise
Valley, Columbia, Mountainhome, Stroudsburg, and Portland.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 298 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 4.
 Interstate 380 in Pennsylvania near mile marker 0.

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 4115 7515 4114 7509 4108 7503 4110 7497
      4100 7486 4087 7527 4098 7537 4108 7540
      4125 7513
TIME...MOT...LOC 2331Z 247DEG 27KT 4102 7494 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Staarmann

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 8:13 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Mercer, Middlesex, Morris, Somerset	62 min
Jul 16, 8:23 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Salem	67 min
Jul 16, 8:50 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Mercer, Monmouth and 1 more	55 min
Jul 16, 9:04 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Camden, Cumberland, Gloucester, Salem	56 min
Jul 16, 9:05 PM EDT	Special Marine Warning	PHI		115 min
Jul 16, 9:07 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth, Somerset	68 min
Jul 16, 9:10 PM EDT	Special Marine Warning	PHI		2 hr
Jul 16, 9:49 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more	71 min
Jul 16, 9:53 PM EDT	Special Marine Warning	PHI		2 hr
Jul 16, 10:50 PM EDT	Special Marine Warning	PHI		115 min
Jul 16, 10:58 PM EDT	Severe Thunderstorm Warning	PHI	Cape May, Cumberland, Gloucester, Salem	62 min
Jul 17, 12:00 AM EDT	Special Marine Warning	PHI		90 min
Jul 17, 1:28 AM EDT	Special Marine Warning	PHI		62 min
Jul 17, 3:04 AM EDT	Small Craft Advisory	PHI		33 hr
Jul 17, 2:25 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	65 min
Jul 17, 3:05 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden, Gloucester	39 min
Jul 17, 3:13 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Sussex, Warren	62 min
Jul 17, 7:06 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Warren	54 min
Jul 17, 7:18 PM EDT	Flash Flood Warning	PHI	Sussex, Warren	2 hr
Jul 16, 8:05 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	70 min
Jul 17, 2:16 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	59 min
Jul 17, 5:51 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	54 min
Jul 17, 6:18 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe	57 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2024 Severe Thunderstorm Warnings in New Jersey, 2024 Every severe thunderstorm warning in 2024

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.