Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 309, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 7, 2023, 5:34 PM EDT for 4 counties in Pennsylvania. It was in force for 41 min. 10 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
- Sep 7, 2023, 5:34 PM EDT (21:34 UTC)
- Expired
- Sep 7, 2023, 6:15 PM EDT
- In force
- 41 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, Northampton County, PA
The radar
The Binghamton radar (KBGM), 134 km from the middle of the area, began a volume at 21:36 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 |
|---|---|---|---|
| Sep 7, 5:34 PM EDT | TSTM WND DMG | 1 S Kunkletown, PA | Trees and power lines down on Lower Smith Gap Road. Time estimated from radar. |
| Sep 7, 5:38 PM EDT | TSTM WND DMG | 2 Se Rossland, PA | Trees and power lines down on Upper Smith Gap Road. Time estimated from radar. |
| Sep 7, 5:42 PM EDT | TSTM WND DMG | Saylorsburg, PA | Downed tree in wires on Hamilton S near Saylorsburg. Time estimated from radar. |
| Sep 7, 5:42 PM EDT | TSTM WND DMG | Tatamy, PA | Picture of a large tree snapped on Broad Street in Tatamy associated with gust front. Time estimated from radar. |
| Sep 7, 5:46 PM EDT | TSTM WND DMG | 2 S Beersville, PA | Downed tree limbs and power lines on Old Carriage Road. Time estimated from radar. |
| Sep 7, 5:50 PM EDT | TSTM WND DMG | 1 S Arlington Heights, PA | Several reports of downed trees on wires. Roads include BUSINESS ROUTE 209, HAMILTON EAST RD, BROWN ST, LOWER MAIN ST, HAMILTON SOUTH RD, WEST MAIN ST, SOUTH COURTLAND ST, NORTH COURTLAND ST, and MILFORD RD. Time estimated from radar. |
| Sep 7, 5:50 PM EDT | TSTM WND DMG | 1 Se Stroud Twp, PA | Downed tree in wires near Dreher Ave and Glen Brook Road. Time estimated from radar. |
| Sep 7, 5:55 PM EDT | TSTM WND GST 44 | Pocono Mountains Munici, PA | KMPO measured gust. |
| Sep 7, 5:57 PM EDT | TSTM WND DMG | 1 Se Hernyville, PA | PA-191 in Monroe Country is closed in both directions, between the intersections of Creek Road (PA-447) in Stroud Township and PA-715 in Paradise Township, due to a downed tree in wires. |
| Sep 7, 6:23 PM EDT | HAIL 0.25 | 3 Nne Coolbaugh Twp, PA |
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 |
|---|---|---|---|
| Sep 7, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 9.6 hours before the alert went out and 220 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.
- Mixed-layer CAPE
- 2039 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1218 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
934
WUUS51 KPHI 072134
SVRPHI
PAC025-077-089-095-072215-
/O.NEW.KPHI.SV.W.0309.230907T2134Z-230907T2215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
534 PM EDT Thu Sep 7 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
North central Lehigh County in eastern Pennsylvania...
Eastern Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
Central Northampton County in eastern Pennsylvania...
* Until 615 PM EDT.
* At 534 PM EDT, severe thunderstorms were located along a line
extending from near Stoddartsville to Christmans to near Emerald,
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...
Lehighton, Mount Pocono, Tobyhanna, Nazareth, Palmerton, Bangor,
Slatington, Pen Argyl, Wind Gap, Bath, Walnutport, Belfast, Tatamy,
Stormville, Neffs, Pocono Pines, Lake Harmony, New Tripoli, Skytop
and Tannersville.
This includes the following highways...
Northeast Extension between mile markers 65 and 93.
Interstate 80 in Pennsylvania between mile markers 282 and 310.
Interstate 380 in Pennsylvania between mile markers 0 and 13.
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.
&&
LAT...LON 4117 7517 4074 7524 4067 7576 4093 7567
4113 7570 4113 7567 4112 7565 4123 7554
4125 7519
TIME...MOT...LOC 2134Z 236DEG 30KT 4120 7566 4096 7562 4077 7568
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS2 follow-up statements
207
WWUS51 KPHI 072155
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
555 PM EDT Thu Sep 7 2023
PAC025-077-089-095-072215-
/O.CON.KPHI.SV.W.0309.000000T0000Z-230907T2215Z/
Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
555 PM EDT Thu Sep 7 2023
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR NORTH CENTRAL LEHIGH...SOUTHEASTERN CARBON...MONROE AND CENTRAL
NORTHAMPTON COUNTIES...
At 555 PM EDT, severe thunderstorms were located along a line
extending from Gouldsboro State Park to McMichael to near
Northampton, moving northeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Mount Pocono, Tobyhanna, Nazareth, Bangor, Pen Argyl, Wind Gap, Bath,
Belfast, Tatamy, Stormville, Henryville, Brodheadsville, Kunkletown,
Pocono Pines, Gilbert, Pocono Raceway, Skytop, Tannersville,
Mountainhome and Alpine Mountain.
This includes the following highways...
Interstate 80 in Pennsylvania between mile markers 291 and 310.
Interstate 380 in Pennsylvania between mile markers 0 and 13.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Mount Holly NJ.
&&
LAT...LON 4070 7557 4094 7549 4123 7554 4124 7545
4125 7519 4117 7517 4074 7524
TIME...MOT...LOC 2155Z 247DEG 24KT 4121 7546 4097 7542 4072 7550
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MPS404
WWUS51 KPHI 072207
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
607 PM EDT Thu Sep 7 2023
PAC025-077-089-095-072217-
/O.EXP.KPHI.SV.W.0309.000000T0000Z-230907T2215Z/
Lehigh PA-Carbon PA-Monroe PA-Northampton PA-
607 PM EDT Thu Sep 7 2023
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL LEHIGH...
SOUTHEASTERN CARBON...MONROE AND CENTRAL NORTHAMPTON COUNTIES WILL
EXPIRE AT 615 PM EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
eastern and northeastern Pennsylvania.
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 4070 7557 4094 7549 4123 7554 4124 7545
4125 7519 4117 7517 4074 7524
TIME...MOT...LOC 2207Z 236DEG 30KT 4126 7536 4102 7532 4077 7540
$$
MPSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 1:10 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 33 min |
| Sep 7, 1:38 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 19 min |
| Sep 7, 2:10 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 50 min |
| Sep 7, 2:13 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh | 47 min |
| Sep 7, 2:52 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 24 min |
| Sep 7, 4:35 PM EDT | Special Weather Statement | PHI | Berks | 25 min |
| Sep 7, 4:47 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh | 43 min |
| Sep 7, 5:17 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Lehigh, Monroe | 43 min |
| Sep 7, 5:30 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 31 min |
| Sep 7, 5:44 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Lehigh, Montgomery, Northampton | 46 min |
| Sep 7, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 42 min |
| Sep 7, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh, Monroe, Northampton | 34 min |
| Sep 7, 6:06 PM EDT | Special Weather Statement | PHI | Bucks, Montgomery | 24 min |
| Sep 7, 6:18 PM EDT | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery | 42 min |
| Sep 7, 6:24 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Monroe, Northampton | 24 min |
| Sep 7, 7:00 PM EDT | Special Weather Statement | PHI | Montgomery | 30 min |
| Sep 7, 7:36 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 39 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2023Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.