Alert archive / New Jersey / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 205, NWS Philadelphia/Mount Holly

July 21, 2026Morris County, Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2026, 1:52 PM EDT for Morris County, Sussex County, Warren County, New Jersey. It was in force for 53 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 21, 2026, 1:52 PM EDT (17:52 UTC)
Expired: Jul 21, 2026, 2:45 PM EDT
In force: 53 min
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ

The radar

The Philadelphia radar (KDIX), 115 km from the middle of the area, began a volume at 17:56 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.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 5.9 hours before the alert went out and 158 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1211 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 1:39 PM EDT, 13 minutes earlier.

Area forecast discussion, Jul 21, 1:39 PM EDT, 13 minutes before

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Hazardous weather outlook, Jul 21, 4:29 AM EDT, 9 hours 23 minutes before

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
429 AM EDT Tue Jul 21 2026

MDZ012-015-019-020-220900-
Kent MD-Queen Annes-Talbot-Caroline-
429 AM EDT Tue Jul 21 2026

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Today and tonight.

Severe thunderstorms with damaging winds and hail are possible this
afternoon and evening. Localized flash flooding is possible this
afternoon and tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Some severe thunderstorms with damaging winds are possible Wednesday.
Localized flash flooding is possible on Wednesday.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Local storm report, Jul 21, 9:57 AM EDT, 3 hours 55 minutes before

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Local storm report, Jul 21, 12:16 PM EDT, 1 hour 36 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 8:49 AM EDT	Flash Flood Warning	PHI	Sussex, Warren	2 hr
Jul 21, 11:01 AM EDT	Special Marine Warning	PHI		59 min
Jul 21, 11:14 AM EDT	Special Marine Warning	PHI		46 min
Jul 21, 12:07 PM EDT	Special Marine Warning	PHI		53 min
Jul 21, 2:00 PM EDT	Tornado Warning	PHI	Morris	30 min
Jul 21, 2:25 PM EDT	Tornado Warning	PHI	Morris	50 min
Jul 21, 2:49 PM EDT	Flash Flood Warning	PHI	Morris	3 hr
Jul 21, 2:57 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon	37 min
Jul 21, 2:57 PM EDT	Tornado Warning	PHI	Morris, Somerset	48 min
Jul 21, 3:13 PM EDT	Flash Flood Warning	PHI	Morris, Somerset	3 hr
Jul 21, 4:06 PM EDT	Special Marine Warning	PHI		54 min
Jul 21, 4:38 PM EDT	Flash Flood Warning Considerable damage threat	PHI	Burlington, Camden, Gloucester, Salem	4 hr
Jul 21, 4:43 PM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	47 min
Jul 21, 4:46 PM EDT	Special Marine Warning	PHI		89 min
Jul 21, 4:50 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth, Somerset	55 min
Jul 21, 5:14 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	46 min
Jul 21, 5:30 PM EDT	Special Marine Warning	PHI		2 hr
Jul 21, 5:30 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Salem	45 min
Jul 21, 5:43 PM EDT	Special Marine Warning	PHI		2 hr
Jul 21, 5:49 PM EDT	Tornado Warning	PHI	Cape May	26 min
Jul 21, 6:06 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	39 min
Jul 21, 6:07 PM EDT	Special Marine Warning	PHI		53 min
Jul 21, 6:09 PM EDT	Tornado Warning	PHI	Cape May	36 min
Jul 21, 6:18 PM EDT	Special Marine Warning	PHI		57 min
Jul 21, 6:34 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	41 min
Jul 21, 6:41 PM EDT	Special Marine Warning	PHI		94 min
Jul 21, 6:50 PM EDT	Special Marine Warning	PHI		85 min
Jul 21, 7:06 PM EDT	Tornado Warning	PHI	Ocean	12 min
Jul 21, 2:18 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	42 min
Jul 21, 3:37 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	53 min
Jul 21, 3:47 PM EDT	Severe Thunderstorm Warning	PHI	Carbon, Monroe	43 min
Jul 21, 3:58 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	47 min
Jul 21, 4:23 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery, Philadelphia	52 min
Jul 21, 4:31 PM EDT	Flash Flood Warning	PHI	Chester, Delaware	96 min
Jul 21, 5:06 PM EDT	Severe Thunderstorm Warning	PHI	Kent	39 min
Jul 21, 5:42 PM EDT	Severe Thunderstorm Warning Considerable damage threat	PHI	Kent	48 min
Jul 21, 6:00 PM EDT	Severe Thunderstorm Warning	PHI	Kent, New Castle	45 min
Jul 21, 6:53 PM EDT	Flash Flood Warning	PHI	Kent, New Castle	3 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.