Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 306, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 11, 2026, 6:22 PM EDT for Monroe County, Pennsylvania. It was in force for 40 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
- Aug 11, 2026, 6:22 PM EDT (22:22 UTC)
- Expired
- Aug 11, 2026, 7:02 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Monroe County, PA
The radar
The Binghamton radar (KBGM), 141 km from the middle of the area, began a volume at 22:24 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 |
|---|---|---|---|
| Aug 11, 6:27 PM EDT | TSTM WND DMG | 2 Nne Arrowhead Lake, PA | Trees down. Time estimated from radar. |
| Aug 11, 6:37 PM EDT | TSTM WND DMG | Pocono Pines, PA | Trees down. Time estimated from radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.4 hours before the alert went out and 198 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
- 551 J/kg
- Mixed-layer CIN
- -117 J/kg
- Mixed-layer LCL
- 1095 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.4
The text
As transmitted.
644
WUUS51 KPHI 112222
SVRPHI
PAC089-112315-
/O.NEW.KPHI.SV.W.0306.260811T2222Z-260811T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
622 PM EDT Tue Aug 11 2026
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Monroe County in northeastern Pennsylvania...
* Until 715 PM EDT.
* At 622 PM EDT, a severe thunderstorm was located near Arrowhead
Lake, or 12 miles northwest of Mount Pocono, moving southeast 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, Tobyhanna, Wind Gap, Stormville,
Henryville, Werry Lake, Pocono Pines, Pocono Raceway, Delaware
Water Gap, Tannersville, Mountainhome, Alpine Mountain, Long Pond,
Sun Valley, Arrowhead Lake, Reeders, Saylorsburg, Analomink, and
McMichael.
This includes the following highways...
Interstate 80 in Pennsylvania between mile markers 287 and 314.
Interstate 80 in New Jersey near mile marker 0.
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.
In addition to 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 4117 7515 4115 7515 4114 7509 4108 7503
4109 7497 4104 7503 4099 7513 4097 7513
4093 7522 4090 7523 4086 7529 4112 7565
4123 7554 4124 7535
TIME...MOT...LOC 2222Z 298DEG 24KT 4120 7556
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse3 follow-up statements
255
WWUS51 KPHI 112236
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
636 PM EDT Tue Aug 11 2026
PAC089-112315-
/O.CON.KPHI.SV.W.0306.000000T0000Z-260811T2315Z/
Monroe PA-
636 PM EDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR MONROE COUNTY...
At 636 PM EDT, a severe thunderstorm was located over Pocono Pines,
or near Mount Pocono, moving southeast at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Mount Pocono, East Stroudsburg, Tobyhanna, Wind Gap, Stormville,
Henryville, Werry Lake, Pocono Pines, Pocono Raceway, Delaware Water
Gap, Tannersville, Mountainhome, Alpine Mountain, Long Pond, Sun
Valley, Reeders, Saylorsburg, Analomink, McMichael, and Canadensis.
This includes the following highways...
Interstate 80 in Pennsylvania between mile markers 287 and 314.
Interstate 80 in New Jersey near mile marker 0.
Interstate 380 in Pennsylvania between mile markers 0 and 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4117 7515 4115 7515 4114 7509 4108 7503
4109 7497 4104 7503 4099 7513 4097 7513
4093 7522 4090 7523 4086 7529 4112 7565
4124 7535
TIME...MOT...LOC 2236Z 309DEG 25KT 4112 7548
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse974
WWUS51 KPHI 112257
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
657 PM EDT Tue Aug 11 2026
PAC089-112315-
/O.CON.KPHI.SV.W.0306.000000T0000Z-260811T2315Z/
Monroe PA-
657 PM EDT Tue Aug 11 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHEASTERN MONROE COUNTY...
At 656 PM EDT, a severe thunderstorm was located over Analomink, or 8
miles southeast of Mount Pocono, moving southeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
East Stroudsburg, Stormville, Reeders, Henryville, Werry Lake,
Analomink, Delaware Water Gap, Tannersville, Alpine Mountain,
Scotrun, Echo Lake, Paradise Valley, Stroudsburg, Arlington Heights,
Shawnee, Marshalls Creek, Hidden Lake, and Bartonsville.
This includes the following highways...
Interstate 80 in Pennsylvania between mile markers 296 and 314.
Interstate 80 in New Jersey near mile marker 0.
Interstate 380 in Pennsylvania between mile markers 0 and 1.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4117 7515 4115 7515 4114 7509 4108 7503
4109 7497 4104 7503 4099 7513 4097 7513
4093 7522 4107 7544
TIME...MOT...LOC 2256Z 293DEG 33KT 4104 7524
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Gorse772
WWUS51 KPHI 112302
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
702 PM EDT Tue Aug 11 2026
PAC089-112311-
/O.CAN.KPHI.SV.W.0306.000000T0000Z-260811T2315Z/
Monroe PA-
702 PM EDT Tue Aug 11 2026
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONROE COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with this thunderstorm.
LAT...LON 4117 7515 4115 7515 4114 7509 4108 7503
4109 7497 4104 7503 4099 7513 4097 7513
4093 7522 4107 7544
TIME...MOT...LOC 2258Z 298DEG 24KT 4102 7519
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 4:48 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 43 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2026Every severe thunderstorm warning in 2026
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.