Severe Thunderstorm Warning 279, NWS Philadelphia/Mount Holly

482 
WWUS51 KPHI 072045
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
445 PM EDT Fri Aug 7 2026

PAC077-089-072055-
/O.CAN.KPHI.SV.W.0279.000000T0000Z-260807T2100Z/
Lehigh PA-Monroe PA-
445 PM EDT Fri Aug 7 2026

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LEHIGH AND EAST
CENTRAL MONROE COUNTIES 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 900 PM EDT for
northern and northwestern New Jersey...and eastern and southeastern
Pennsylvania.

LAT...LON 4120 7437 4109 7450 4104 7450 4105 7446
      4073 7466 4072 7472 4063 7473 4046 7485
      4050 7537 4113 7489
TIME...MOT...LOC 2045Z 265DEG 27KT 4110 7470 4078 7485 4048 7504 

$$

NJC019-027-037-041-PAC017-095-072100-
/O.CON.KPHI.SV.W.0279.000000T0000Z-260807T2100Z/
Hunterdon NJ-Morris NJ-Sussex NJ-Warren NJ-Bucks PA-Northampton PA-
445 PM EDT Fri Aug 7 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR HUNTERDON...WESTERN MORRIS...SOUTHERN SUSSEX...WARREN...
NORTHWESTERN BUCKS AND SOUTHEASTERN NORTHAMPTON COUNTIES...

At 445 PM EDT, severe thunderstorms were located along a line
extending from near Newton to near Beatyestown to near Erwinna,
moving east at 30 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Easton, Newton, Dover, Hopatcong, Hackettstown, Wilson, Wharton,
Washington, Blairstown, Mount Arlington, Franklin, Flemington, High
Bridge, Stanhope, Hamburg, Netcong, Clinton, Belvidere, Harmony, and
Peapack And Gladstone.

This includes the following highways...
 Interstate 78 in Pennsylvania between mile markers 74 and 76.
 Interstate 78 in New Jersey between mile markers 0 and 26.
 Interstate 80 in New Jersey between mile markers 8 and 35.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Frequent cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4120 7437 4109 7450 4104 7450 4105 7446
      4073 7466 4072 7472 4063 7473 4046 7485
      4050 7537 4113 7489
TIME...MOT...LOC 2045Z 265DEG 27KT 4110 7470 4078 7485 4048 7504 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Gorse

Area Forecast Discussion
National Weather Service Mount Holly NJ
340 PM EDT Fri Aug 7 2026

.WHAT HAS CHANGED...
Updated key message 1 and 2.

&&

.KEY MESSAGES...
1. Hot and very humid conditions are expected to persist through
Tuesday of next week. A Heat Advisory is in effect for portions of
the area through tomorrow.

2. There are daily chances for showers and thunderstorms through
tomorrow, as well as portions of next week. There is at least a
marginal risk each day for localized heavy rainfall leading to flash
flooding and locally damaging wind gusts with any stronger
thunderstorms that develop.

&&

.DISCUSSION...
KEY MESSAGE 1...Hot and very humid conditions are expected to
persist through Tuesday of next week. A Heat Advisory is in effect
for portions of the area through tomorrow.

A relatively stagnant synoptic pattern is developing across our
region. Quasi zonal mid and upper level flow will be in place
through the middle of next week as Bermuda high pressure persists
offshore. This will keep a steady stream of very warm and moist air
in place across the region through the period.

A prolonged period of hot and, most notably, very humid conditions
is expected to remain in place for the next several days. We look to
have a weak cold frontal passage Sunday, ushering in slightly drier
air. This will give some slight reprieve from the excessive
humidity, though highs will still be in the upper 80s to low 90s.
Moisture advection will return again by Monday though, and hot and
very humid conditions are anticipated to return Monday through
Tuesday. A somewhat stronger cold front looks to come through late
Tuesday or Wednesday, which will help break the excessive heat and
humidity some.

A Heat Advisory remains in effect for portions of eastern
Pennsylvania, much of New Jersey except the far southern counties,
as well as New Castle County, Delware.

KEY MESSAGE 2...There are daily chances for showers and
thunderstorms through tomorrow, as well as portions of next week.
There is at least a marginal risk each day for localized heavy
rainfall leading to flash flooding and locally damaging wind gusts
with any stronger thunderstorms that develop.

A Severe Thunderstorm Watch has been issued until 9 PM this evening
for our whole forecast area. MLCAPE this afternoon has reached near
or over 3000 J/kg with some favorable lapse rates. However, shear
remains around 20-30 kt. The primary risk is damaging wind gusts
with any severe thunderstorms. There remains a Slight (level 2 out
of 5) risk for areas near and northwest of the I-95 corridor. The
remainder of the area is under a Marginal (level 1 out of 5) risk
for severe thunderstorms. Another concern is the heavy rainfall
potential. There is a Slight (level 2 out of 4) for excessive
rainfall for areas near and NW of I-95 corridor. The remainder of
the area is under a Marginal (level 1 out of 4) risk for excessive
rainfall. PWATs of 2 inches or greater today along with a warm cloud
layer process showcases the heavy rainfall risk. Given these
conditions, rainfall rates of 2-3 inches per hour are possible.

On Saturday, the extent of the convection remains more unclear. The
current guidance shows isolated convection developing during the
later afternoon into the evening hours. PWATs look slightly lower
than today, and mean flow is a bit more westerly than southwesterly,
but overall the thermodynamics appear similar. There will be less
forcing, so the coverage is more isolated compared to today. We
remain in a Marginal (level 1 out of 4) risk for excessive rainfall
from WPC. In terms of the severe weather potential, SPC has added a
Marginal (level 1 out of 5) risk for isolated severe thunderstorms
for most of our area with the primary hazard being damaging wind
gusts.

We look to have a weak cold frontal passage by Sunday, ushering in
slightly drier air. This combined with subtle subsidence aloft will
help briefly limit convection potential on Sunday. Moisture and
forcing aloft will return by Monday as mean flow shifts more
westerly and mid level flow increases. This should result in a
greater severe thunderstorm threat compared to this week, and
perhaps slightly lower flash flooding threat, but the details into
the period early next week remain unclear. Long story short, Monday
and Tuesday look to continue the hot and humid conditions and daily
thunderstorm chances.

A somewhat stronger cold front looks to come through late Tuesday or
Wednesday, which will help break the excessive heat and humidity
some, but the pattern aloft may still support diurnally driven
convection.

&&

.AVIATION /19Z FRIDAY THROUGH WEDNESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

This afternoon...VFR expected for most of the day. Scattered
showers and thunderstorms will develop late in the day,
primarily after 20-23Z from west to east. Southwest winds
generally between 5-10 kts, locally up to 15 kts. ,

Tonight...Primarily VFR expected, however restrictions are
possible at times prior to 04Z with any showers or
thunderstorms. Patchy fog possible late. Moderate confidence
overall.

Saturday...VFR. Scattered afternoon thunderstorms with MVFR
conditions.

Outlook...

Saturday night...Mostly VFR except lower conditions possible
with evening showers and thunderstorms.

Sunday-Sunday night...VFR conditions expected.

Monday-Tuesday...Mostly VFR except lower conditions possible
with afternoon/evening showers and thunderstorms.

Wednesday...VFR.

&&

.MARINE...
No prevailing marine hazards are expected through Saturday.
Southwesterly winds increasing to 15-20 kts with seas of 2-4
feet. A line of showers and thunderstorms may move offshore late
in the evening, with gusts of 30-40 kts and locally higher seas
possible. On Saturday, seas remain at 2-4 feet with a
southwesterly wind around 15-20 kt.

Outlook...

Sunday through Wednesday...No prevailing marine hazards expected.
Thunderstorms possible Saturday night and Tuesday night.

Rip Currents...

For today...Southwest to south winds around 10-15 mph with
breaking waves in the surf zone of 1 to 3 feet. A medium period
east to southeast swell continues (dominant wave period of 5-7
seconds). Opted to go with a LOW risk for the development of
dangerous rip currents at all beaches.

For Saturday...Southwesterly winds continue and should increase
some to 10-20 mph. Breaking waves in the surf zone are forecast
to increase some, especially for much of the Jersey Shore, at 2
to 4 feet. Given the increasing surf and southerly winds, went
with a MODERATE risk for the development of dangerous rip
currents for the Jersey Shore. Breaking waves should be a little
lower still for the Delaware Beaches and coastal Monmouth
County, therefore went with a LOW risk for the development of
dangerous rip currents.

For specific beach forecasts, visit weather.gov/beach/phi

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Heat Advisory until 8 PM EDT Saturday for PAZ070-071-101>106.
     Heat Advisory until 8 PM EDT this evening for PAZ060>062.
NJ...Heat Advisory until 8 PM EDT Saturday for NJZ008>010-012>015-
     017>020-027.
     Heat Advisory until 8 PM EDT this evening for NJZ001-007.
DE...Heat Advisory until 8 PM EDT Saturday for DEZ001.
MD...None.
MARINE...None.

&&

DISCUSSION...Guzzo/Staarmann
AVIATION...Franklin/Staarmann
MARINE...Gorse/Guzzo/Staarmann

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
507 AM EDT Fri Aug 7 2026

MDZ012-015-019-020-080915-
Kent MD-Queen Annes-Talbot-Caroline-
507 AM EDT Fri Aug 7 2026

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Today and tonight.

There is a risk of severe thunderstorms late this afternoon and
evening, with potential for damaging winds and locally heavy
rainfall leading to flash flooding being the main threats.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Hot and very humid conditions will persist through Tuesday along
with daily chances for showers and thunderstorms. Any stronger
thunderstorms may produce locally damaging wind gusts and locally
heavy rainfall, which could lead to flash flooding.

.SPOTTER INFORMATION STATEMENT...

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

Staarmann