Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 30, NWS Philadelphia/Mount Holly

April 15, 2023Monroe County, Northampton County, Pennsylvania; Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 15, 2023, 1:58 PM EDT for Monroe County, Northampton County, Pennsylvania; Warren County, New Jersey. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 15, 2023, 1:58 PM EDT (17:58 UTC)
Expired: Apr 15, 2023, 2:30 PM EDT
In force: 32 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

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

The radar

The Philadelphia radar (KDIX), 125 km from the middle of the area, began a volume at 17:57 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 6.0 hours before the alert went out and 191 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: 26 J/kg
Mixed-layer CIN: -187 J/kg
Mixed-layer LCL: 927 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

040 
WUUS51 KPHI 151758
SVRPHI
NJC041-PAC089-095-151830-
/O.NEW.KPHI.SV.W.0030.230415T1758Z-230415T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
158 PM EDT Sat Apr 15 2023

The National Weather Service in Mount Holly NJ has issued a

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

* Until 230 PM EDT.

* At 157 PM EDT, a severe thunderstorm was located over East Bangor,
  or 13 miles north of Easton, moving north at 25 mph.

  HAZARD...Quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to vehicles is possible.

* Locations impacted include...
  East Stroudsburg, Bangor, Pen Argyl, Wind Gap, Belvidere, East
  Bangor, Stormville, Henryville, Werry Lake, Analomink, Delaware
  Water Gap, Columbia, Echo Lake, Stroudsburg, Roseto, Portland,
  Arlington Heights, Shawnee, Marshalls Creek and Hidden Lake.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 306 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 8.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4081 7508 4085 7530 4111 7527 4107 7496
TIME...MOT...LOC 1757Z 195DEG 22KT 4088 7517 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

MLB

2 follow-up statements

400 
WWUS51 KPHI 151818
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
218 PM EDT Sat Apr 15 2023

NJC041-PAC089-095-151830-
/O.CON.KPHI.SV.W.0030.000000T0000Z-230415T1830Z/
Warren NJ-Monroe PA-Northampton PA-
218 PM EDT Sat Apr 15 2023

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR NORTHWESTERN WARREN...SOUTHEASTERN MONROE AND NORTHEASTERN
NORTHAMPTON COUNTIES...

At 218 PM EDT, a severe thunderstorm was located over Delaware Water
Gap, or 14 miles southeast of Mount Pocono, moving north at 25 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to vehicles is possible.

Locations impacted include...
East Stroudsburg, East Bangor, Stormville, Henryville, Werry Lake,
Analomink, Delaware Water Gap, Columbia, Echo Lake, Stroudsburg,
Portland, Arlington Heights, Shawnee, Marshalls Creek, Hidden Lake
and Bartonsville.

This includes the following highways...
 Interstate 80 in Pennsylvania between mile markers 306 and 314.
 Interstate 80 in New Jersey between mile markers 0 and 8.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4086 7506 4091 7529 4111 7527 4107 7496
TIME...MOT...LOC 1818Z 195DEG 22KT 4101 7513 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

MLB

425 
WWUS51 KPHI 151827
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
227 PM EDT Sat Apr 15 2023

NJC041-PAC089-095-151837-
/O.EXP.KPHI.SV.W.0030.000000T0000Z-230415T1830Z/
Warren NJ-Monroe PA-Northampton PA-
227 PM EDT Sat Apr 15 2023

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN WARREN...
SOUTHEASTERN MONROE AND NORTHEASTERN NORTHAMPTON COUNTIES WILL EXPIRE
AT 230 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 4086 7506 4091 7529 4111 7527 4107 7496
TIME...MOT...LOC 1827Z 195DEG 22KT 4105 7512 

$$

MLB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 12:42 PM EDT	Special Weather Statement	PHI	Northampton	48 min
Apr 15, 1:03 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Lehigh, Monroe, Northampton	27 min
Apr 15, 1:22 PM EDT	Flash Flood Warning	PHI	Lehigh, Northampton	4 hr
Apr 15, 1:34 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	26 min
Apr 15, 1:51 PM EDT	Severe Thunderstorm Warning	PHI	Chester	24 min
Apr 15, 2:02 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Lehigh, Northampton	28 min
Apr 15, 2:17 PM EDT	Areal Flood Advisory	PHI	Chester	3 hr
Apr 15, 4:05 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Philadelphia	25 min
Apr 15, 4:56 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	14 min
Apr 15, 5:20 PM EDT	Flash Flood Warning	PHI	Lehigh	3 hr
Apr 15, 6:05 PM EDT	Areal Flood Advisory	PHI	Bucks	96 min
Apr 15, 4:29 AM EDT	Marine Dense Fog Advisory	PHI		54 hr
Apr 15, 1:09 PM EDT	Special Weather Statement	PHI	Sussex	36 min
Apr 15, 1:49 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	26 min
Apr 15, 1:55 PM EDT	Areal Flood Advisory	PHI	Sussex	6 hr
Apr 15, 2:06 PM EDT	Areal Flood Advisory	PHI	Mercer, Middlesex, Somerset	6 hr
Apr 15, 3:28 PM EDT	Areal Flood Advisory	PHI	Hunterdon, Morris, Sussex, Warren	3 hr
Apr 15, 3:29 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester	31 min
Apr 15, 3:58 PM EDT	Areal Flood Advisory	PHI	Burlington, Camden, Gloucester	3 hr
Apr 15, 4:19 PM EDT	Flash Flood Warning	PHI	Burlington, Camden	3 hr
Apr 15, 4:49 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Somerset	26 min
Apr 15, 6:32 PM EDT	Areal Flood Warning	PHI	Hunterdon	5 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2023 Severe Thunderstorm Warnings in New Jersey, 2023 Every severe thunderstorm warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.