Alert archive / Pennsylvania / Tornado Warnings in 2026
Tornado Warning 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this tornado warning at Jun 22, 2026, 4:56 PM EDT for Chester County, Delaware County, Montgomery County, Pennsylvania. It was in force for 34 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
- Jun 22, 2026, 4:56 PM EDT (20:56 UTC)
- Expired
- Jun 22, 2026, 5:30 PM EDT
- In force
- 34 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Chester County, PA, Delaware County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 103 km from the middle of the area, began a volume at 20:58 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 |
|---|---|---|---|
| Jun 22, 5:00 PM EDT | TSTM WND DMG | 1 Wnw Devault, PA | Trees and wires down reported around Charlestown Township. Time estimated by radar. |
| Jun 22, 5:17 PM EDT | TSTM WND DMG | 2 E Valley Forge, PA | Multiple trees uprooted with large branches also snapped. Time estimated from radar. |
| Jun 22, 5:18 PM EDT | TSTM WND DMG | 1 Wnw Chesterbrook, PA | Delayed report. Multiple trees down near Welsh Valley Rd and Yellow Springs Rd. 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 |
|---|---|---|---|
| Jun 22, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.9 hours before the alert went out and 196 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1417 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
880
WFUS51 KPHI 222056
TORPHI
PAC029-045-091-222130-
/O.NEW.KPHI.TO.W.0006.260622T2056Z-260622T2130Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mount Holly NJ
456 PM EDT Mon Jun 22 2026
The National Weather Service in Mount Holly NJ has issued a
* Tornado Warning for...
South central Montgomery County in southeastern Pennsylvania...
Northeastern Chester County in southeastern Pennsylvania...
North central Delaware County in southeastern Pennsylvania...
* Until 530 PM EDT.
* At 456 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Lionville, or 8 miles northwest of West Chester,
moving east at 25 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
West Chester, Phoenixville, West Norriton, East Norriton,
Downingtown, Valley Forge, Paoli, Chester Springs, Newtown Square,
Lionville, King Of Prussia, Lionville-Marchwood, Radnor Township,
West Goshen, Malvern, Exton, Thorndale, Audubon, Chesterbrook, and
Eagleville.
This includes the following highways...
Pennsylvania Turnpike between mile markers 307 and 328.
Interstate 76 in Pennsylvania between mile markers 327 and 328.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3997 7577 4016 7575 4017 7537 3994 7538
TIME...MOT...LOC 2056Z 267DEG 24KT 4008 7568
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Cooper2 follow-up statements
085
WWUS51 KPHI 222105
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
505 PM EDT Mon Jun 22 2026
PAC029-045-091-222130-
/O.CON.KPHI.TO.W.0006.000000T0000Z-260622T2130Z/
Montgomery PA-Chester PA-Delaware PA-
505 PM EDT Mon Jun 22 2026
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR SOUTH
CENTRAL MONTGOMERY...NORTHEASTERN CHESTER AND NORTH CENTRAL DELAWARE
COUNTIES...
At 505 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Chester Springs, or 8 miles north of West Chester,
moving east at 30 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
West Chester, Phoenixville, West Norriton, East Norriton, Valley
Forge, Paoli, Chester Springs, Newtown Square, Lionville, King Of
Prussia, Lionville-Marchwood, Radnor Township, West Goshen, Malvern,
Exton, Audubon, Chesterbrook, Eagleville, Devon-Berwyn, and Trooper.
This includes the following highways...
Pennsylvania Turnpike between mile markers 313 and 328.
Interstate 76 in Pennsylvania between mile markers 327 and 328.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3998 7567 4016 7565 4017 7537 3994 7538
TIME...MOT...LOC 2105Z 267DEG 24KT 4008 7560
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
Cooper343 WWUS51 KPHI 222123 SVSPHI Severe Weather Statement National Weather Service Mount Holly NJ 523 PM EDT Mon Jun 22 2026 PAC029-045-091-222133- /O.EXP.KPHI.TO.W.0006.000000T0000Z-260622T2130Z/ Montgomery PA-Chester PA-Delaware PA- 523 PM EDT Mon Jun 22 2026 ...THE TORNADO WARNING FOR SOUTH CENTRAL MONTGOMERY...NORTHEASTERN CHESTER AND NORTH CENTRAL DELAWARE COUNTIES WILL EXPIRE AT 530 PM EDT... The tornado threat has diminished and the Tornado Warning has been cancelled. However, large hail and damaging winds remain likely and a Severe Thunderstorm Warning remains in effect for the area. A Severe Thunderstorm Watch remains in effect until 900 PM EDT for southeastern Pennsylvania. LAT...LON 3998 7567 4016 7565 4017 7537 3994 7538 TIME...MOT...LOC 2123Z 267DEG 24KT 4009 7544 $$ Cooper
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 2:13 AM EDT | Flood Watch | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 25 hr |
| Jun 22, 2:20 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 40 min |
| Jun 22, 2:55 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 50 min |
| Jun 22, 4:15 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery | 45 min |
| Jun 22, 4:35 PM EDT | Tornado Warning | PHI | Berks, Chester, Delaware, Montgomery | 25 min |
| Jun 22, 5:18 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery | 42 min |
| Jun 22, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 53 min |
| Jun 22, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 52 min |
| Jun 22, 6:02 PM EDT | Flash Flood Warning | PHI | Delaware, Montgomery, Philadelphia | 4 hr |
| Jun 22, 6:02 PM EDT | Severe Thunderstorm Warning | PHI | Delaware, Philadelphia | 43 min |
| Jun 22, 6:09 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Montgomery, Philadelphia | 51 min |
| Jun 22, 6:26 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 4 hr |
| Jun 22, 6:36 PM EDT | Flash Flood Warning | PHI | Philadelphia | 3 hr |
| Jun 22, 6:48 PM EDT | Flash Flood Warning | PHI | Bucks | 3 hr |
Nearby
Tornado Warnings in Pennsylvania, 2026Every tornado warning in 2026Tornadoes 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.