Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 16, NWS Philadelphia/Mount Holly

March 16, 20265 counties in Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 16, 2026, 10:32 PM EDT for 5 counties in Pennsylvania. It was in force for 58 min. 22 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: Mar 16, 2026, 10:32 PM EDT (02:32 UTC)
Expired: Mar 16, 2026, 11:30 PM EDT
In force: 58 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 71 km from the middle of the area, began a volume at 02:36 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
Mar 16, 10:36 PM EDT	TSTM WND DMG	East Whiteland Twp, PA	Tree down into a house in East Whiteland Township. Multiple other reports of trees down, including some onto house in northern Chester County. No reported injuries. Time estimated from radar.
Mar 16, 10:36 PM EDT	TSTM WND DMG	East Whiteland Twp, PA	Tree fell into a house. Time estimated from radar.
Mar 16, 10:37 PM EDT	TSTM WND DMG	3 E Lower Pottsgrove Tw, PA	Tree down blocking the road near Neiffer Road and Swamp Pike. Time estimated from radar.
Mar 16, 10:39 PM EDT	TSTM WND DMG	Malvern, PA	Corrects previous tstm wnd dmg report from Malvern. Several trees and wires down in East Malvern. Time estimated from radar.
Mar 16, 10:41 PM EDT	TSTM WND DMG	1 Wnw Lower Frederick T, PA	Tree down blocking the road near Zieglerville Road and North Gravel Pike. Time estimated from radar.
Mar 16, 10:42 PM EDT	TSTM WND DMG	1 N Collegeville, PA	Tree down blocking the road near Glen Farms Drive and East 9th Avenue. Time estimated from radar.
Mar 16, 10:42 PM EDT	TSTM WND DMG	Marlborough Twp, PA	Trees and powerlines down in Marlborough Township. Time estimated from radar.
Mar 16, 10:43 PM EDT	TSTM WND GST 56	1 Nnw West Goshen, PA	AWOS station KOQN West Chester.
Mar 16, 10:45 PM EDT	TSTM WND DMG	Trooper, PA	Tree down partially blocking the road near Sunnyside Avenue and Farmhouse Drive. Time estimated from radar.
Mar 16, 10:46 PM EDT	TSTM WND DMG	1 Ssw Skippack, PA	Report of an estimated 20-30 trees trees snapped and uprooted on Kratz Road near Scheer Way along a roughly half mile line. An additional 4-5 trees downed along the nearby Anders Road to the south. Photos provided in the report suggest wind gusts of approximat
Mar 16, 10:50 PM EDT	TSTM WND DMG	Kulpsville, PA	Trees and powerlines down in Towamencin Township. Time estimated from radar.
Mar 16, 10:55 PM EDT	TSTM WND DMG	1 Sw Concordville, PA	US-1 south is closed between the intersections of Painters Crossing Drive and Heyburn Road in Chadds Ford Township due to downed trees and wires blocking the roadway. Time estimated from radar.
Mar 16, 10:55 PM EDT	TSTM WND DMG	Hilltown Twp, PA	Numerous reports of trees and powerlines down across much of Bucks County, including in Hilltown Township. Time estimated from radar.
Mar 16, 11:01 PM EDT	TSTM WND DMG	Bedminster, PA	Corrects previous tstm wnd dmg report from Bedminster. Numerous reports of trees and powerlines down across much of Bucks County, including near Bedminster. Time estimated from radar.
Mar 16, 11:01 PM EDT	TSTM WND DMG	Bedminster, PA	Numerous reports of trees and powerlines down across much of Bucks County, including near Bedminster. Time estimated from radar.
Mar 16, 11:05 PM EDT	TSTM WND DMG	Doylestown, PA	Numerous reports of trees and powerlines down across much of Bucks County, including near Doylestown. Time estimated from radar.
Mar 16, 11:09 PM EDT	TSTM WND DMG	1 Ene Furlong, PA	Several trees down along Upper Mountain Road between Route 413 and Forest Grove Road. Time estimated from radar.
Mar 16, 11:11 PM EDT	TSTM WND GST 60	Philadelphia Internatio, PA
Mar 16, 11:12 PM EDT	TSTM WND DMG	1 Wsw Belmont, PA	Trees and wires down in West Philadelphia. Time estimated from radar.
Mar 16, 11:13 PM EDT	TSTM WND DMG	1 Se Upper Southampton, PA	Corrects previous tstm wnd dmg report from 1 SE Upper Southampton Twp. Numerous reports of trees and powerlines down across much of Bucks County, including in Upper and Lower Southampton Townships. Time estimated from radar.
Mar 16, 11:15 PM EDT	TSTM WND DMG	1 Se Point Breeze, PA	Wires down in South Philadelphia. Time estimated from radar.
Mar 16, 11:20 PM EDT	TSTM WND GST 58	Northeast Philadelphia, PA

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 00:00Z, 2.5 hours before the alert went out and 219 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: 2 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 490 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 605 m²/s²
0-3 km storm-relative helicity: 610 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

874 
WUUS51 KPHI 170232
SVRPHI
PAC017-029-045-091-101-170330-
/O.NEW.KPHI.SV.W.0016.260317T0232Z-260317T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1032 PM EDT Mon Mar 16 2026

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Montgomery County in southeastern Pennsylvania...
  Bucks County in southeastern Pennsylvania...
  Northeastern Chester County in southeastern Pennsylvania...
  Philadelphia County in southeastern Pennsylvania...
  Delaware County in southeastern Pennsylvania...

* Until 1130 PM EDT.

* At 1032 PM EDT, a line of gusty showers were located along a line 
  extending from Bechtelsville to North Star, moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Philadelphia, Camden, West Chester, Norristown, Chester,
  Phoenixville, Lansdale, West Norriton, East Norriton, Yeadon,
  Westtown, Quakertown, Perkasie, Doylestown, Byram, Conshohocken,
  Hatboro, Souderton, Folcroft, and Bedminster.

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.

This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.

&&

LAT...LON 4041 7550 4054 7507 4042 7506 4040 7498
      4005 7496 4002 7504 3998 7507 3996 7513
      3990 7513 3988 7515 3988 7519 3985 7525
      3985 7533 3980 7541 3984 7550 3984 7562
TIME...MOT...LOC 0232Z 254DEG 41KT 4038 7563 3977 7575 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Hoeflich

3 follow-up statements

563 
WWUS51 KPHI 170247
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1047 PM EDT Mon Mar 16 2026

PAC017-029-045-091-101-170330-
/O.CON.KPHI.SV.W.0016.000000T0000Z-260317T0330Z/
Montgomery PA-Bucks PA-Chester PA-Philadelphia PA-Delaware PA-
1047 PM EDT Mon Mar 16 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR MONTGOMERY...BUCKS...NORTHEASTERN CHESTER...PHILADELPHIA AND
DELAWARE COUNTIES...

At 1046 PM EDT, severe thunderstorms were located along a line
extending from Geryville to Talleyville, moving east at 45 mph.

HAZARD...70 mph wind gusts.

SOURCE...Emergency management. At 10:44 PM, emergency management 
         reported several trees down in Chester County.

 
IMPACTS...Expect considerable tree damage. Damage is likely to 
mobile homes, roofs, and outbuildings.

Locations impacted include...
Philadelphia, Camden, West Chester, Norristown, Chester,
Phoenixville, Lansdale, West Norriton, East Norriton, Yeadon,
Westtown, Quakertown, Perkasie, Doylestown, Byram, Conshohocken,
Hatboro, Souderton, Folcroft, and Bedminster.

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.

This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.

&&

LAT...LON 4041 7550 4054 7507 4042 7506 4040 7498
      4005 7496 4002 7504 3998 7507 3996 7513
      3990 7513 3988 7515 3988 7519 3985 7525
      3985 7533 3980 7541 3984 7550 3984 7562
TIME...MOT...LOC 0246Z 254DEG 41KT 4042 7545 3981 7558 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Hoeflich

076 
WWUS51 KPHI 170305 RRA
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1105 PM EDT Mon Mar 16 2026

PAC029-170315-
/O.CAN.KPHI.SV.W.0016.000000T0000Z-260317T0330Z/
Chester PA-
1105 PM EDT Mon Mar 16 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHESTER COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until midnight EDT for
southern New Jersey.

LAT...LON 3981 7540 3997 7540 4050 7519 4054 7507
      4042 7506 4040 7498 4005 7496 4002 7504
      3998 7507 3996 7513 3990 7513 3988 7515
      3988 7519 3985 7525 3985 7533
TIME...MOT...LOC 0305Z 252DEG 41KT 4044 7520 3985 7538 

$$

PAC017-045-091-101-170330-
/O.CON.KPHI.SV.W.0016.000000T0000Z-260317T0330Z/
Montgomery PA-Bucks PA-Philadelphia PA-Delaware PA-
1105 PM EDT Mon Mar 16 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT
FOR SOUTHEASTERN MONTGOMERY...CENTRAL BUCKS...PHILADELPHIA AND
EASTERN DELAWARE COUNTIES...

At 1105 PM EDT, severe thunderstorms were located along a line
extending from Bedminster to Chester, moving east at 50 mph.

HAZARD...70 mph wind gusts.

SOURCE...Emergency management.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Philadelphia, Camden, Norristown, Chester, Lansdale, East Norriton,
Yeadon, Doylestown, Byram, Conshohocken, Hatboro, Folcroft,
Bedminster, Ambler, Swarthmore, Paulsboro, Jenkintown, Narberth,
Chalfont, and Tinicum.

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.

This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.

&&

LAT...LON 3981 7540 3997 7540 4050 7519 4054 7507
      4042 7506 4040 7498 4005 7496 4002 7504
      3998 7507 3996 7513 3990 7513 3988 7515
      3988 7519 3985 7525 3985 7533
TIME...MOT...LOC 0305Z 252DEG 41KT 4044 7520 3985 7538 

TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

Hoeflich

452 
WWUS51 KPHI 170325
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1125 PM EDT Mon Mar 16 2026

PAC017-045-091-101-170335-
/O.EXP.KPHI.SV.W.0016.000000T0000Z-260317T0330Z/
Montgomery PA-Bucks PA-Philadelphia PA-Delaware PA-
1125 PM EDT Mon Mar 16 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MONTGOMERY...
CENTRAL BUCKS...PHILADELPHIA AND EASTERN DELAWARE COUNTIES WILL
EXPIRE AT 1130 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 midnight EDT for
southern New Jersey.

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 3981 7540 3997 7540 4050 7519 4054 7507
      4042 7506 4040 7498 4005 7496 4002 7504
      3998 7507 3996 7513 3990 7513 3988 7515
      3988 7519 3985 7525 3985 7533
TIME...MOT...LOC 0325Z 254DEG 41KT 4050 7493 3991 7511 

$$

Hoeflich

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 16, 9:54 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	66 min
Mar 16, 10:18 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Carbon, Lehigh, Monroe, Northampton	57 min
Mar 16, 11:16 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Philadelphia	59 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2026 Every 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.