Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 150, NWS Philadelphia/Mount Holly

July 17, 2024Carbon County, Lehigh County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 17, 2024, 6:18 PM EDT for Carbon County, Lehigh County, Monroe County, Pennsylvania. It was in force for 57 min. 2 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, 6:18 PM EDT (22:18 UTC)
Expired: Jul 17, 2024, 7:15 PM EDT
In force: 57 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Carbon County, PA, Lehigh County, PA, Monroe County, PA

The radar

The Binghamton radar (KBGM), 149 km from the middle of the area, began a volume at 22:21 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, 6:39 PM EDT	TSTM WND DMG	1 Sse Towamensing Twp, PA	Report of trees down around Lower Towamensing Township. Time estimated from radar.
Jul 17, 6:45 PM EDT	TSTM WND GST 48	1 S Lehighton, PA	Mesonet station FW6636 Lehighton.

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, 10.3 hours before the alert went out and 240 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.

417 
WUUS51 KPHI 172218
SVRPHI
PAC025-077-089-172315-
/O.NEW.KPHI.SV.W.0150.240717T2218Z-240717T2315Z/

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

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Northwestern Lehigh County in eastern Pennsylvania...
  Carbon County in northeastern Pennsylvania...
  Southwestern Monroe County in northeastern Pennsylvania...

* Until 715 PM EDT.

* At 618 PM EDT, a severe thunderstorm was located over Snyders, or
  near Tamaqua, 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...
  Lehighton, Palmerton, Jim Thorpe, Nesquehoning, Weatherly,
  Brodheadsville, New Mahoning, Gilbert, Albrightsville, Kresgeville,
  Jonas, Meckesville, Wanamakers, Beltzville State Park, Penn Forest
  Reservoir, Christmans, Lansford, Summit Hill, Bowmanstown, and
  Parryville.

This includes the following highways...
 Northeast Extension between mile markers 70 and 94.
 Interstate 80 in Pennsylvania between mile markers 280 and 282.

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 4093 7539 4064 7583 4068 7589 4070 7583
      4074 7576 4083 7590 4100 7576 4101 7573
      4103 7574 4109 7569
TIME...MOT...LOC 2218Z 222DEG 25KT 4074 7587 

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

$$

Staarmann

3 follow-up statements

972 
WWUS51 KPHI 172234
SVSPHI

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

PAC025-077-089-172315-
/O.CON.KPHI.SV.W.0150.000000T0000Z-240717T2315Z/
Lehigh PA-Carbon PA-Monroe PA-
634 PM EDT Wed Jul 17 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHWESTERN LEHIGH...EASTERN CARBON AND SOUTHWESTERN MONROE
COUNTIES...

At 634 PM EDT, a severe thunderstorm was located over Lehighton,
moving northeast at 40 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...
Lehighton, Palmerton, Jim Thorpe, Nesquehoning, Brodheadsville, New
Mahoning, Wanamakers, Beltzville State Park, Gilbert, Penn Forest
Reservoir, Albrightsville, Kresgeville, Christmans, Jonas,
Meckesville, Summit Hill, Bowmanstown, Parryville, Weissport, and
Effort.

This includes Northeast Extension between mile markers 70 and 89.
 
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.

&&

LAT...LON 4093 7539 4064 7583 4068 7589 4070 7583
      4074 7576 4082 7589 4105 7561
TIME...MOT...LOC 2234Z 235DEG 33KT 4081 7570 

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

$$

Staarmann

464 
WWUS51 KPHI 172246
SVSPHI

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

PAC077-172255-
/O.CAN.KPHI.SV.W.0150.000000T0000Z-240717T2315Z/
Lehigh PA-
646 PM EDT Wed Jul 17 2024

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN LEHIGH COUNTY IS
CANCELLED...

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

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
eastern and northeastern Pennsylvania.

LAT...LON 4093 7539 4078 7562 4078 7567 4075 7573
      4073 7576 4080 7586 4104 7559
TIME...MOT...LOC 2245Z 230DEG 33KT 4088 7559 

$$

PAC025-089-172315-
/O.CON.KPHI.SV.W.0150.000000T0000Z-240717T2315Z/
Carbon PA-Monroe PA-
646 PM EDT Wed Jul 17 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHEASTERN CARBON AND SOUTHWESTERN MONROE COUNTIES...

At 645 PM EDT, a severe thunderstorm was located over Beltzville
State Park, or 7 miles northeast of Lehighton, moving northeast at 40
mph. This storm recently produced a 48 mph wind gust in Lehighton.

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...
Lehighton, Palmerton, Jim Thorpe, Brodheadsville, New Mahoning,
Beltzville State Park, Gilbert, Penn Forest Reservoir,
Albrightsville, Kresgeville, Christmans, Jonas, Meckesville,
Bowmanstown, Parryville, Weissport, Effort, Trachsville, Weissport
East, and Merwinsburg.

This includes Northeast Extension between mile markers 72 and 88.
 
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 4093 7539 4078 7562 4078 7567 4075 7573
      4073 7576 4080 7586 4104 7559
TIME...MOT...LOC 2245Z 230DEG 33KT 4088 7559 

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

$$

Staarmann

278 
WWUS51 KPHI 172301
SVSPHI

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

PAC025-172311-
/O.CAN.KPHI.SV.W.0150.000000T0000Z-240717T2315Z/
Carbon PA-
701 PM EDT Wed Jul 17 2024

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

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

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
northeastern Pennsylvania.

LAT...LON 4093 7539 4086 7550 4086 7551 4095 7557
      4096 7556 4099 7549
TIME...MOT...LOC 2301Z 224DEG 25KT 4094 7545 

$$

PAC089-172315-
/O.CON.KPHI.SV.W.0150.000000T0000Z-240717T2315Z/
Monroe PA-
701 PM EDT Wed Jul 17 2024

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR SOUTHWESTERN MONROE COUNTY...

At 701 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...
Gilbert, Kresgeville, Brodheadsville, Jonas, Merwinsburg, and Effort.

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 4093 7539 4086 7550 4086 7551 4095 7557
      4096 7556 4099 7549
TIME...MOT...LOC 2301Z 224DEG 25KT 4094 7545 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 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, 8:05 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	70 min
Jul 16, 8:13 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery	62 min
Jul 16, 8:23 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Delaware, Montgomery, Philadelphia	67 min
Jul 16, 9:04 PM EDT	Severe Thunderstorm Warning	PHI	Delaware	56 min
Jul 17, 2:16 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	59 min
Jul 17, 3:05 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	39 min
Jul 17, 5:51 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	54 min
Jul 17, 6:40 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	65 min
Jul 17, 7:06 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	54 min
Jul 17, 7:18 PM EDT	Flash Flood Warning	PHI	Carbon, Lehigh, Monroe, Northampton	2 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 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.