Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 39, NWS Philadelphia/Mount Holly

May 6, 2025Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 6, 2025, 4:18 PM EDT for Warren County, New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 57 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: May 6, 2025, 4:18 PM EDT (20:18 UTC)
Expired: May 6, 2025, 5:15 PM EDT
In force: 57 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, Monroe County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 141 km from the middle of the area, began a volume at 20:21 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
May 6, 4:30 PM EDT	HAIL 0.5	2 N Arlington Heights, PA	Report from mPING: Half-inch (0.50 in.).
May 6, 4:33 PM EDT	HAIL 0.7	Bangor, PA	Public report ranging from pea to dime size hail in Bangor.
May 6, 4:45 PM EDT	TSTM WND DMG	1 Wsw Upper Mount Bethe, PA	Photo via social media of a large tree down blocking both lanes of PA Route 512 between East Bangor and Mount Bethel. 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
May 6, 1:06 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 8.3 hours before the alert went out and 195 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 784 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

747 
WUUS51 KPHI 062018
SVRPHI
NJC041-PAC089-095-062115-
/O.NEW.KPHI.SV.W.0039.250506T2018Z-250506T2115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
418 PM EDT Tue May 6 2025

The National Weather Service in Mount Holly NJ has issued a

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

* Until 515 PM EDT.

* At 418 PM EDT, a severe thunderstorm was located over Bangor, or 12
  miles north of Easton, moving north 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...
  Stormville, Henryville, Portland, Wind Gap, Delaware Water Gap,
  Skytop, Tannersville, Mountainhome, Alpine Mountain, Bangor,
  Belfast, Roseto, Bartonsville, East Stroudsburg, Reeders, Cresco,
  Arlington Heights, Stroudsburg, Analomink, and Shawnee.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 300 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 4.

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.

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 4115 7515 4114 7513 4114 7509 4109 7504
      4077 7515 4077 7529 4124 7540 4125 7513
TIME...MOT...LOC 2018Z 184DEG 19KT 4087 7523 

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

$$

Staarmann

2 follow-up statements

855 
WWUS51 KPHI 062034
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
434 PM EDT Tue May 6 2025

NJC041-PAC089-095-062115-
/O.CON.KPHI.SV.W.0039.000000T0000Z-250506T2115Z/
Warren NJ-Monroe PA-Northampton PA-
434 PM EDT Tue May 6 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHWESTERN WARREN...CENTRAL MONROE AND NORTHEASTERN NORTHAMPTON
COUNTIES...

At 434 PM EDT, severe thunderstorms were located along a line
extending from near Alpine Mountain to East Stroudsburg to near
Bangor, moving north at 25 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...
Stormville, Henryville, Portland, Delaware Water Gap, Skytop,
Mountainhome, Alpine Mountain, Bangor, Roseto, Bartonsville, East
Stroudsburg, Cresco, Arlington Heights, Stroudsburg, Analomink,
Shawnee, Pen Argyl, Canadensis, East Bangor, and Marshalls Creek.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 303 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 4.

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.

Frequent cloud to ground lightning is occurring with these storms.
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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4115 7515 4114 7513 4114 7509 4109 7504
      4077 7515 4077 7525 4124 7536 4125 7513
TIME...MOT...LOC 2034Z 190DEG 23KT 4114 7516 4102 7516 4082 7516 

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

$$

Staarmann

656 
WWUS51 KPHI 062051
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
451 PM EDT Tue May 6 2025

NJC041-PAC089-095-062115-
/O.CON.KPHI.SV.W.0039.000000T0000Z-250506T2115Z/
Warren NJ-Monroe PA-Northampton PA-
451 PM EDT Tue May 6 2025

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR NORTHWESTERN WARREN...NORTHEASTERN MONROE AND NORTHEASTERN
NORTHAMPTON COUNTIES...

At 451 PM EDT, severe thunderstorms were located along a line
extending from near Pecks Pond to near Alpine Mountain to Columbia,
moving north 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...
Henryville, Cresco, Arlington Heights, Stroudsburg, Analomink,
Shawnee, Delaware Water Gap, Skytop, Mountainhome, Canadensis, Alpine
Mountain, Marshalls Creek, Echo Lake, East Stroudsburg, Werry Lake,
Portland, and East Bangor.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 310 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 4.

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.

Frequent cloud to ground lightning is occurring with these storms.
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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4115 7515 4114 7513 4114 7509 4109 7504
      4089 7511 4089 7518 4124 7532 4125 7513
TIME...MOT...LOC 2051Z 183DEG 19KT 4123 7513 4111 7515 4093 7512 

TORNADO...POSSIBLE
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
May 6, 4:31 PM EDT	Tornado Warning	PHI	Sussex, Warren	44 min
May 6, 5:11 PM EDT	Tornado Warning	PHI	Sussex	34 min
May 6, 1:08 PM EDT	Severe Thunderstorm Warning	PHI	Berks	37 min
May 6, 1:31 PM EDT	Severe Thunderstorm Warning	PHI	Chester	44 min
May 6, 2:12 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	48 min
May 6, 2:46 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh	59 min
May 6, 3:41 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	49 min
May 6, 3:57 PM EDT	Tornado Warning	PHI	Monroe, Northampton	33 min
May 6, 4:19 PM EDT	Tornado Warning	PHI	Monroe	26 min
May 6, 4:44 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	46 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2025 Severe Thunderstorm Warnings in New Jersey, 2025 Every severe thunderstorm warning in 2025

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.