Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 19, NWS Philadelphia/Mount Holly

March 16, 2026Bucks County, Philadelphia County, Pennsylvania; 5 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 16, 2026, 11:16 PM EDT for Bucks County, Philadelphia County, Pennsylvania; 5 counties in New Jersey. It was in force for 59 min. 19 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, 11:16 PM EDT (03:16 UTC)
Expired: Mar 17, 2026, 12:15 AM EDT
In force: 59 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ, Bucks County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 03:15 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, 11:28 PM EDT	TSTM WND DMG	2 Wnw Raritan Twp, NJ	Several trees and wires down around Raritan Township. Time estimated from radar.
Mar 16, 11:33 PM EDT	TSTM WND DMG	1 Nw Pennington, NJ	Several trees and wires down around Hopewell and Pennington. Time estimated from radar.
Mar 16, 11:33 PM EDT	TSTM WND DMG	1 Se Washington Crossin, NJ	Downed Wires on NJ 29 Both Directions North of River Knoll Dr (Hopewell Twp), All lanes closed.
Mar 16, 11:33 PM EDT	TSTM WND DMG	1 Sse Ewing, NJ	Several trees and wires down around Ewing. Time estimated from radar.
Mar 16, 11:33 PM EDT	TSTM WND GST 58	Trenton Mercer Airport, NJ
Mar 16, 11:36 PM EDT	TSTM WND DMG	1 E Prospect Park, NJ	NJ DOT - TOC South: Downed Tree on NJ 31 Southbound North of CR 622/Olden Ave (Ewing Twp), 1 center lane of 4 lanes closed. Time estimated from radar.
Mar 16, 11:36 PM EDT	TSTM WND DMG	2 W Woodsville, NJ	Downed Tree/Wires on NJ 31 Both Directions North of CR 518/Lambertville Hopewell Tpke (East Amwell Twp). All lanes closed. Time estimated from radar.
Mar 16, 11:42 PM EDT	TSTM WND DMG	2 Sw Princeton, NJ	NJ DOT - TOC South: Downed Tree/Wires on US 206 Northbound At Province Line Rd (Lawrence Twp), All lanes closed. Time estimated from radar.
Mar 16, 11:42 PM EDT	TSTM WND DMG	Montgomery Twp, NJ	Several trees and wires down around Montgomery Township. Time estimated from radar.
Mar 16, 11:43 PM EDT	TSTM WND DMG	1 E Princeton, NJ	Several trees and wires down around Princeton. Time estimated from radar.
Mar 16, 11:45 PM EDT	TSTM WND DMG	2 Ese Skillman, NJ	Downed Tree on US 206 Southbound North of CR 533/Orchard Rd (Montgomery Twp), All lanes closed. Time estimated from radar.
Mar 16, 11:47 PM EDT	TSTM WND DMG	Hillsborough Twp, NJ	Several trees and wires down around Hillsborough. Time estimated from radar.
Mar 16, 11:48 PM EDT	TSTM WND DMG	1 N East Windsor Twp, NJ	Numerous trees uprooted around Cranbury. Shadow Oaks neighborhood hit especially hard, with some felled trees impacting houses. Photos provided in report. Time estimated from radar.
Mar 16, 11:48 PM EDT	TSTM WND DMG	1 Ne Belle Mead, NJ	Downed Pole/Wires on US 206 Both Directions South of Brooks Blvd. All lanes closed. Time estimated from radar.
Mar 16, 11:54 PM EDT	TSTM WND DMG	2 Sw Franklin Township, NJ	Several trees and wires down around Franklin Township. Time estimated from radar.
Mar 16, 11:54 PM EDT	TSTM WND DMG	2 Wsw Bernards Twp, NJ	Downed Tree on I-287 Southbound North of Exit 26 - CR 525/Mount Airy Rd (Bernards Twp), 2 right lanes of 3 lanes, right shoulder closed. Time estimated from radar.
Mar 16, 11:55 PM EDT	TSTM WND DMG	1 S Jamesburg, NJ	Several trees and wires down around Monroe Township. Time estimated from radar.
Mar 16, 11:57 PM EDT	TSTM WND DMG	1 Sw Piscataway, NJ	Several trees and wires down around Piscataway. Time estimated from radar.
Mar 17, 12:04 AM EDT	TSTM WND DMG	1 Sw Edison, NJ	Several trees and wires down around Edison. 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 00:00Z, 3.3 hours before the alert went out and 156 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.

347 
WUUS51 KPHI 170316
SVRPHI
NJC019-021-023-025-035-PAC017-101-170415-
/O.NEW.KPHI.SV.W.0019.260317T0316Z-260317T0415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1116 PM EDT Mon Mar 16 2026

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Hunterdon County in northwestern New Jersey...
  Mercer County in central New Jersey...
  Somerset County in northern New Jersey...
  West central Monmouth County in central New Jersey...
  Middlesex County in northern New Jersey...
  Eastern Bucks County in southeastern Pennsylvania...
  Northeastern Philadelphia County in southeastern Pennsylvania...

* Until 1215 AM EDT.

* At 1116 PM EDT, severe thunderstorms were located along a line
  extending from near Lumberville to near South Philadelphia, moving
  northeast at 60 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Philadelphia, Trenton, New Brunswick, Somerville, Somerset, Edison,
  Old Bridge, Bensalem, East Brunswick, Bridgewater, South Brunswick,
  Sayreville, North Brunswick, Ewing, Middlesex, Princeton, Bound
  Brook, Manville, Burlington, and Bristol.

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 4031 7433 4016 7465 4018 7471 4014 7474
      4013 7482 4008 7487 4005 7497 4006 7497
      4052 7509 4073 7468 4076 7456 4070 7451
      4065 7452 4067 7447 4066 7440 4060 7446
      4061 7433 4059 7427
TIME...MOT...LOC 0316Z 230DEG 54KT 4038 7506 3992 7516 

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

614 
WWUS51 KPHI 170338
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1138 PM EDT Mon Mar 16 2026

PAC101-170348-
/O.CAN.KPHI.SV.W.0019.000000T0000Z-260317T0415Z/
Philadelphia PA-
1138 PM EDT Mon Mar 16 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PHILADELPHIA
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 4013 7481 4061 7479 4075 7461 4076 7456
      4070 7451 4065 7452 4067 7447 4066 7440
      4060 7446 4061 7433 4059 7427 4031 7433
      4016 7465 4018 7471 4014 7474
TIME...MOT...LOC 0338Z 228DEG 55KT 4057 7476 4012 7478 

$$

NJC019-021-023-025-035-PAC017-170415-
/O.CON.KPHI.SV.W.0019.000000T0000Z-260317T0415Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-Bucks PA-
1138 PM EDT Mon Mar 16 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR EAST CENTRAL HUNTERDON...MERCER...SOMERSET...WEST CENTRAL
MONMOUTH...MIDDLESEX AND EASTERN BUCKS COUNTIES...

At 1138 PM EDT, severe thunderstorms were located along a line
extending from near White House Station to Florence, moving northeast
at 65 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated. At 11:33 PM, Trenton Mercer Airport gusted 
         to 58 MPH. 

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

Locations impacted include...
Trenton, New Brunswick, Somerville, Somerset, Edison, Old Bridge,
East Brunswick, Bridgewater, South Brunswick, Sayreville, North
Brunswick, Ewing, Middlesex, Princeton, Bound Brook, Manville,
Jamesburg, Hightstown, Mendham, and Cranbury.

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 4013 7481 4061 7479 4075 7461 4076 7456
      4070 7451 4065 7452 4067 7447 4066 7440
      4060 7446 4061 7433 4059 7427 4031 7433
      4016 7465 4018 7471 4014 7474
TIME...MOT...LOC 0338Z 228DEG 55KT 4057 7476 4012 7478 

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

$$

Hoeflich

906 
WWUS51 KPHI 170353 RRA
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1153 PM EDT Mon Mar 16 2026

NJC019-PAC017-170403-
/O.CAN.KPHI.SV.W.0019.000000T0000Z-260317T0415Z/
Hunterdon NJ-Bucks PA-
1153 PM EDT Mon Mar 16 2026

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL HUNTERDON AND
EASTERN BUCKS COUNTIES IS CANCELLED...

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

LAT...LON 4017 7462 4074 7459 4076 7456 4075 7456
      4070 7451 4065 7452 4067 7447 4066 7440
      4060 7446 4061 7433 4059 7427 4031 7433
TIME...MOT...LOC 0353Z 230DEG 54KT 4067 7461 4022 7463 

$$

NJC021-023-025-035-170415-
/O.CON.KPHI.SV.W.0019.000000T0000Z-260317T0415Z/
Mercer NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-
1153 PM EDT Mon Mar 16 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT
FOR SOUTHEASTERN MERCER...EASTERN SOMERSET...WEST CENTRAL MONMOUTH
AND MIDDLESEX COUNTIES...

At 1153 PM EDT, severe thunderstorms were located along a line
extending from Far Hills to near Mercerville-Hamilton Square, moving
northeast at 60 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
New Brunswick, Somerville, Somerset, Edison, Old Bridge, East
Brunswick, South Brunswick, Sayreville, North Brunswick, Middlesex,
Bound Brook, Manville, Jamesburg, Hightstown, Cranbury, Millstone,
Martinsville, Yorketown, Twin Rivers, and Society Hill.

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 4017 7462 4074 7459 4076 7456 4075 7456
      4070 7451 4065 7452 4067 7447 4066 7440
      4060 7446 4061 7433 4059 7427 4031 7433
TIME...MOT...LOC 0353Z 230DEG 54KT 4067 7461 4022 7463 

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

$$

Hoeflich

054 
WWUS51 KPHI 170408
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
1208 AM EDT Tue Mar 17 2026

NJC021-023-025-035-170418-
/O.EXP.KPHI.SV.W.0019.000000T0000Z-260317T0415Z/
Mercer NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-
1208 AM EDT Tue Mar 17 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MERCER...EASTERN
SOMERSET...WEST CENTRAL MONMOUTH AND MIDDLESEX COUNTIES WILL EXPIRE
AT 1215 AM EDT...

The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.

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 4017 7462 4074 7459 4076 7456 4075 7456
      4070 7451 4065 7452 4067 7447 4066 7440
      4060 7446 4061 7433 4059 7427 4031 7433
TIME...MOT...LOC 0408Z 230DEG 54KT 4080 7441 4035 7443 

$$

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, 10:32 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	58 min
Mar 16, 10:03 PM EDT	Special Marine Warning	PHI		117 min
Mar 16, 10:36 PM EDT	Special Marine Warning	PHI		86 min
Mar 16, 10:39 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Burlington, Camden, Cumberland, Gloucester, Salem	51 min
Mar 16, 10:50 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Atlantic, Cape May, Cumberland, Salem	55 min
Mar 16, 10:58 PM EDT	Special Marine Warning	PHI		2 hr
Mar 16, 11:19 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Mercer, Monmouth and 1 more	41 min
Mar 16, 11:30 PM EDT	Special Marine Warning	PHI		2 hr
Mar 16, 11:37 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Cape May, Ocean	38 min
Mar 16, 11:49 PM EDT	Tornado Warning	PHI	Burlington, Monmouth, Ocean	26 min
Mar 16, 11:51 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Mercer, Middlesex, Monmouth, Ocean	43 min
Mar 16, 11:55 PM EDT	Severe Thunderstorm Warning	PHI	Morris, Somerset	25 min
Mar 17, 5:48 AM EDT	Small Craft Advisory	PHI		31 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2026 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.