Alert archive / New Jersey / Special Marine Warnings in 2026
Special Marine Warning 113, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special marine warning at Jul 22, 2026, 12:02 AM EDT. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 22, 2026, 12:02 AM EDT (04:02 UTC)
- Expired
- Jul 22, 2026, 1:00 AM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.0 in
- Wind
- 34.0 mph
The radar
The Philadelphia radar (KDIX), 137 km from the middle of the area, began a volume at 04:05 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 00:00Z, 4.0 hours before the alert went out and 222 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
- 935 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 555 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.2
The text
As transmitted.
948
WHUS51 KPHI 220402
SMWPHI
ANZ481>483-485-220500-
/O.NEW.KPHI.MA.W.0113.260722T0402Z-260722T0500Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Special Marine Warning
National Weather Service Mount Holly NJ
1202 AM EDT Wed Jul 22 2026
The National Weather Service in Mount Holly NJ has issued a
* Special Marine Warning for...
Outer waters from Manasquan Inlet NJ to Fenwick Island DE from 20
to 60 nm...
* Until 100 AM EDT.
* At 1202 AM EDT, severe thunderstorms capable of producing
waterspouts were located along a line extending from 22 nm east of
Atlantic City Reef to 17 nm east of Deepwater Reef to 23 nm
southeast of Five Fathoms Buoy, moving east at 30 knots.
HAZARD...Waterspouts and wind gusts 34 knots or greater.
SOURCE...Radar.
IMPACT...Waterspouts can easily overturn boats and create locally
hazardous seas. Small craft could be damaged in briefly
higher winds and suddenly higher waves.
* The severe thunderstorms will remain over mainly open waters.
LAT...LON 3911 7306 3886 7327 3854 7365 3848 7367
3853 7423 3899 7387 3934 7383 3939 7294
TIME...MOT...LOC 0402Z 271DEG 29KT 3927 7378 3900 7381 3860 7413
WATERSPOUT...POSSIBLE
HAIL...0.00IN
WIND...>34KTS
$$
HoeflichWhat forecasters said that day
The local office's own words before this special marine 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 special marine warning went out at Jul 21, 10:06 PM EDT, 1 hour 56 minutes earlier. Its key messages:
- 1) The threat for severe weather and flash flooding has largely ended for tonight, however some additional severe storms and flash flooding will be possible Wednesday. Wednesday's severe weather and flooding threat is not expected to be as widespread though as it will be confined mainly to areas south and east of the urban corridor.
Area forecast discussion, Jul 21, 10:06 PM EDT, 1 hour 56 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
1006 PM EDT Tue Jul 21 2026
.WHAT HAS CHANGED...
The Severe Thunderstorm Watch was allowed to expire at 10 PM and
we've also cancelled the Flood Watch.
&&
.KEY MESSAGES...
1) The threat for severe weather and flash flooding has largely
ended for tonight, however some additional severe storms and flash
flooding will be possible Wednesday. Wednesday's severe weather and
flooding threat is not expected to be as widespread though as it
will be confined mainly to areas south and east of the urban
corridor.
&&
.DISCUSSION...
KEY MESSAGE 1...The threat for severe weather and flash flooding has largely
ended for tonight, however some additional severe storms and flash
flooding will be possible Wednesday. Wednesday's severe weather and
flooding threat is not expected to be as widespread though as it
will be confined mainly to areas south and east of the urban
corridor.
As of 10 PM, the Severe Thunderstorm Watch has been allowed to
expire and we've also cancelled the Flood Watch. That said, the area
still remains in the warm sector ahead of an approaching cold front
and though the instability has significantly decreased, there
is still some remaining. For this reason, still expecting some
showers and a few storms to continue into the overnight as the
cold front approaches from the north and west and weak impulses
aloft move through the upper level flow. Locally heavy downpours
will be possible but any flooding should be largely of the
nuisance variety.
On Wednesday, the cold front will sag farther south and east and
depending on how quickly this clears our area there will be some
showers and thunderstorms, especially as additional shortwaves move
through the flow within the upper-level trough overhead. This looks
to be more concentrated across southern New Jersey to Delmarva but
could extend into the I-95 corridor for a time. There is some severe
weather risk mainly south/east of the I-95 corridor with locally
damaging wind gusts the main threat. The greater instability and
shear looks to reside across Delmarva on southward, where a little
higher severe thunderstorm risk is indicated. Some locally excessive
rainfall is possible with some local flash flood risk, however this
looks to be less compared to today given the shift farther south and
more into the coastal plain. Once the front moves away by later
Wednesday, it turns drier for Thursday/Friday and right into the
weekend.
&&
.AVIATION /02Z WEDNESDAY THROUGH SUNDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Tonight...Still some showers and thunderstorms around this
evening mainly from around Philly southward. In any of these
showers conditions may still drop to MVFR or even IFR...best
chances for this at MIV and ACY. Otherwise, widespread showers
diminish by the overnight period with MVFR cigs likely affecting
most sites by around the 04-07z time frame. Winds generally
southwest 10 to 15 knots but locally strong and variable winds
possible in any storms.
Wednesday...Once morning clouds clear by around 14Z, should
have prevailing VFR conditions. However, temporary MVFR or even
IFR conditions will be possible with showers and storms. The
highest risk of showers and storms is at KACY, but it is
possible the storms will be south of all TAF sites. Southwest
winds around 10 KT with some gusts of 15-20 knots possible.
Moderate confidence.
Outlook...
Thursday through Saturday...VFR.
&&
.MARINE...
Small Craft Advisory conditions for all coastal waters through
Wednesday evening. SCA conditions do subside though overnight
on Delaware Bay. Gusty thunderstorms probable into tonight.
Outlook...
Wednesday...Small Craft Advisory remains in effect for the ocean
zones.
Thursday through Saturday...The conditions are anticipated to be
below Small Craft Advisory criteria.
Rip Currents...
For Wednesday, winds turn more southwesterly but still 10-20
mph. However, breaking wave heights are expected to increase,
with breaking waves in the surf zone as high as 5 feet possible.
Still a 7 second period though which will mitigate the rip
current threat some. However, will continue with a MODERATE risk
for the development of dangerous rip currents at all beaches.
For Thursday, winds come around to the northeast and will generally
be 15 to 20 mph. Breaking waves are expected to be around 2-4 feet
with a 7 second period. With the onshore component of the wind and
multiple swell groups expected, expecting a MODERATE risk for the
development of dangerous rip currents at all beaches.
For specific beach forecasts, visit weather.gov/beach/phi
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Small Craft Advisory until 6 AM EDT Wednesday for ANZ430-431.
Small Craft Advisory until 2 AM EDT Thursday for ANZ450>455.
&&
DISCUSSION...Fitzsimmons/Gorse/MJL
AVIATION...Fitzsimmons/Gorse/Johnson
MARINE...Gorse/Hoeflich/MJLHazardous weather outlook, Jul 21, 4:29 AM EDT, 19 hours 33 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, 8:28 PM EDT, 3 hours 34 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
828 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0355 PM Tstm Wnd Dmg 2 W Blakeslee 41.09N 75.64W
07/21/2026 Carbon PA 911 Call Center
Tree down on wires in Lake Harmony. Time
estimated from radar.
&&
ZCLocal storm report, Jul 21, 8:31 PM EDT, 3 hours 31 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
831 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0419 PM Tstm Wnd Dmg Price Twp 41.15N 75.22W
07/21/2026 Monroe PA 911 Call Center
Trees down on wires. Time estimated from
radar.
&&
ZCLocal storm report, Jul 21, 9:10 PM EDT, 2 hours 52 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
910 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0452 PM Tstm Wnd Dmg Montgomery Twp 40.46N 74.66W
07/21/2026 Somerset NJ 911 Call Center
Trees and wires down. Time given in report.
&&
ZCLocal storm report, Jul 21, 9:28 PM EDT, 2 hours 34 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
928 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0709 PM Tstm Wnd Dmg Stafford Twp 39.70N 74.28W
07/21/2026 Ocean NJ 911 Call Center
Tree down in Stafford Twp. Time estimated
from radar.
&&
ZCLocal storm report, Jul 21, 11:21 PM EDT, 41 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1121 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1104 PM Flash Flood 1 NNW North Wildwood 39.02N 74.80W
07/21/2026 Cape May NJ Dept of Highways
Flooding on NJ 147 Both Directions West of W
Anglesea Dr (Middle Twp), All lanes closed
eastbound; All lanes closed westbound.
&&
ZCLocal storm report, Jul 21, 11:58 PM EDT, 4 minutes before
Preliminary Local Storm Report
National Weather Service Mount Holly NJ
1158 PM EDT Tue Jul 21 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1100 PM Flash Flood Easton 38.77N 76.07W
07/21/2026 Talbot MD 911 Call Center
Roadways were flooded in Easton. The flood
waters have since receded.
&&
ZCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:16 PM EDT | Special Marine Warning | PHI | 59 min | |
| Jul 21, 10:38 PM EDT | Flash Flood Warning | PHI | Cape May | 4 hr |
| Jul 21, 11:01 PM EDT | Special Marine Warning | PHI | 59 min | |
| Jul 21, 11:48 PM EDT | Special Marine Warning | PHI | 57 min | |
| Jul 22, 1:11 AM EDT | Special Marine Warning | PHI | 64 min | |
| Jul 22, 3:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 22, 6:32 PM EDT | Special Marine Warning | PHI | 58 min | |
| Jul 22, 7:30 PM EDT | Special Marine Warning | PHI | 35 min | |
| Jul 22, 7:57 PM EDT | Special Marine Warning | PHI | 45 min | |
| Jul 21, 10:42 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 4 hr |
| Jul 22, 3:48 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 27 min |
Nearby
Special Marine Warnings in New Jersey, 2026Every special marine 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.