Delaware, 2023

Tornado and Damaging Winds in Delaware, September 11, 2023

September 11, 2023 · NWS PHI · 3 events in 1 county or zone

A boundary near the coast resulted in a few showers and thunderstorms popping up. One storm produced a tornado in southern Delaware.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PHI wrote it up.

A boundary near the coast resulted in a few showers and thunderstorms popping up. One storm produced a tornado in southern Delaware.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Sep 11, 12:31 PM EST, 1 hour 24 minutes earlier.

Area forecast discussion, Sep 11, 12:31 PM EST, 1 hour 24 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
131 PM EDT Mon Sep 11 2023

.SYNOPSIS...
A weak surface front across our area will dissipate or shift
offshore later tonight into Tuesday. A stronger cold front
approaches Tuesday and then crosses our region Wednesday. High
pressure builds in Thursday and remains in place through
Saturday, then a cold front may approach from the west Sunday.

&&

.NEAR TERM /THROUGH TONIGHT/...
No changes from previous discussion.

Prev disc...The axis of a mid level short wave trough extended
from western Pennsylvania to the Carolinas early this morning.
The feature will progress to the east and it should pass off our
coast this evening. Until that time, we will continue to see
some precipitation in our region.

A weak surface low was located off the coasts of Delaware and
southern New Jersey early this morning. It is forecast to move
slowly northeastward and farther out to sea today and tonight.

We are anticipating scattered showers this morning. Daytime
heating should bring MUCAPE values up into the 1000 to 1500 J/kg
range this afternoon, so we are expecting another round of
thunderstorms to develop. Once the short wave axis passes to our
east this evening it will likely take any lingering
precipitation with it.

Locally moderate to heavy rainfall is possible again today due
to the abundant low level moisture. The forecast wind profiles
suggest only a limited potential for strong gusts this
afternoon.

A light wind flow tonight is expected to allow for the
development of some low clouds and patchy fog.

Today's maximum temperatures are forecast to range mainly from
the upper 70s to the middle 80s, with tonight's lows mostly in
the 60s.

&&

.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
A few more days of humid and unsettled conditions.

The weak surface front that has remained across our region will
either dissipate or shift offshore into Tuesday. This should
result in less of a focus for convective development for much of
Tuesday. A stronger cold front will then be approaching our
region from the west later Tuesday and Tuesday night as an
upper-level trough begins to close off over the Great Lakes. The
cold front then works its way across our region Wednesday. It
is this front that will bring relief from the days of convection
and humid conditions.

As the cold front approaches Tuesday and Tuesday night, some
weak shortwave energy may be present ahead of the front. While
there could be some low clouds and/or fog to start Tuesday,
boundary layer heating through the day will result in enough
instability that could lead to some showers and thunderstorms
especially along any surface convergence areas such as a sea/bay
breeze. Given less certainty with the coverage, kept slight
chance PoPs in for the daytime (mainly afternoon) Tuesday.

As we go through Tuesday night and Wednesday, the main
precipitation from the stronger cold front is anticipated. With
the timing of the main showers/thunderstorms being overnight
into Wednesday, severe thunderstorms are currently not
anticipated as instability will be more limited. It does appear
a broken line or clusters of showers and some thunder arrives
early Wednesday morning, then some additional convection may
occur through the afternoon as the cold front or perhaps a
secondary one moves through. It is possible that much of the
convection occurs during the first half of the day, especially
if the faster model guidance is correct. For now, the main
impact is the potential for localized flash flooding from
downpours given plenty of moisture still in place ahead of the
cold front and especially for areas that have recently picked up
excessive rainfall amounts. Drying is expected to start
overspreading the area especially Wednesday night within a post-
frontal regime.

&&

.LONG TERM /THURSDAY THROUGH SUNDAY/...
Summary...Forecast to be dry with below average high
temperatures and dew points in the comfortable range

Synoptic Overview...A closed low is forecast to open up and
lift away from our area late Thursday night and Friday, with
surface high pressure building in and remaining in place through
Saturday. High pressure weakens Sunday with a cold front
potentially approaching from the west.

For Thursday...A cold front is currently forecast to be
offshore, however cyclonic flow and cold air advection in its
wake will result in cooler temperatures and dew points dropping.
It appears that plenty of drier air overspreads the area and
therefore dry conditions are expected in the wake of the cold
front.

For Friday through Sunday...As the lingering upper-level trough
continues to lift away from our area Friday, surface high
pressure is forecast to build in from the west. This high
remains in place through Saturday, however it is then forecast
to weaken into Sunday. A cold front might approach from the west
during Sunday. The air mass associated with this high pressure
system will be cool and dry, and given overall a possible cold
front hanging back to our west Sunday this time frame is kept
dry.

The presence of an incoming upper-level trough or two are
forecast to pull Hurricane Lee northward and parallel well
offshore of the Mid-Atlantic coast Friday through Saturday. It
still looks like there will be no direct impacts to our area,
however a prolonged period of larger swells/waves and dangerous
rip currents are expected.

&&

.AVIATION /18Z MONDAY THROUGH SATURDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

This afternoon...Mainly VFR. Scattered showers and
thunderstorms will bring locally heavy rainfall along with
periods of MVFR/IFR conditions. Wind favoring the northwest 6
knots or less. Medium confidence.

Tonight...Starting off VFR in the evening, with MVFR/IFR
conditions developing overnight. Vis restrictions from fog is
most most likely, though cannot rule out low stratus either.
Variable wind 5 knots or less. Medium confidence.

Outlook...

Tuesday...Areas of low clouds and fog possible for a time in
the morning, then mainly VFR through the day with a shower or
thunderstorm possible. Sub-VFR conditions should develop at
night with also the arrival of some showers and thunderstorms
overnight. Light and variable or northeast winds around 5 knots
to start becoming southerly 5-10 knots. Low confidence.

Wednesday...Times of sub-VFR conditions with some showers and
thunderstorms, then improving conditions later in the afternoon
and especially at night. Southwest winds 5-10 knots, becoming
west to northwest by later in the day and at night. Low
confidence.

Thursday and Friday...VFR. Northwesterly winds 10-15 knots with
gusts to 20 knots, diminishing some each night. Moderate
confidence.

&&

.MARINE...
A variable wind 5 to 10 knots today is forecast to become
southwest this evening, then west to northwest overnight. Waves
on our ocean waters are expected to be 2 to 3 feet, with waves
on Delaware Bay at 2 feet or less.

Outlook...

Tuesday...Small Craft Advisory possible on the ocean zones as
seas may build to around 5 feet.

Wednesday and Thursday...Small Craft Advisory probable on the
ocean zones due to seas at and above 5 feet.

Friday...Small Craft Advisory probable, mainly on the ocean
zones, due to seas building to 8 feet and greater and gusts to
around 25 knots.

Rip Currents...

A variable wind 5 to 10 MPH this morning is expected to become
southerly in the afternoon along the coasts of Delaware and New
Jersey. Breaking waves are forecast to be around 2 feet with a
long period southeast swell (around 12 to 14 seconds). The long
period swell will bring a MODERATE risk for the development of
dangerous rip currents today.

A variable wind 5 to 10 MPH on Tuesday morning is anticipated
to become southeast to south in the afternoon. Breaking waves
should be 2 to 3 feet. A long period southeast swell (around 12
to 14 seconds) is likely to continue. As the breaking waves
increase and the long period swell persists, we will raise the
risk for the development of dangerous rip currents to HIGH for
Tuesday.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

SYNOPSIS...Gorse
NEAR TERM...Iovino/MJL
SHORT TERM...Gorse/Wunderlin
LONG TERM...Gorse
AVIATION...Gorse/MJL
MARINE...Gorse/Iovino
Hazardous weather outlook, Sep 11, 11:57 AM EST, 1 hour 58 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
1257 PM EDT Mon Sep 11 2023

DEZ001-121657-
New Castle-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for New Castle County in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

DEZ002-121657-
Kent-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Kent County in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

DEZ003-121657-
Inland Sussex-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for inland portions of Sussex County
in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

DEZ004-121657-
Delaware Beaches-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for the Atlantic coastal portions of
Sussex County in Delaware.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

PAZ054-121657-
Carbon-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Carbon County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ055-121657-
Monroe-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Monroe County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ060-121657-
Berks-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Berks County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ061-121657-
Lehigh-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Lehigh County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ062-121657-
Northampton-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Northampton County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ070-121657-
Delaware-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Delaware County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ071-121657-
Philadelphia-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Philadelphia County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ101-121657-
Western Chester-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for western Chester County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ102-121657-
Eastern Chester-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for eastern Chester County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ103-121657-
Western Montgomery-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for western Montgomery County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ104-121657-
Eastern Montgomery-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for eastern Montgomery County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ105-121657-
Upper Bucks-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for upper Bucks County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

PAZ106-121657-
Lower Bucks-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for lower Bucks County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ001-121657-
Sussex-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Sussex County in New Jersey.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ007-121657-
Warren-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Warren County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ008-121657-
Morris-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Morris County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ009-121657-
Hunterdon-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Hunterdon County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ010-121657-
Somerset-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Somerset County in New Jersey.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ012-121657-
Middlesex-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Middlesex County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ013-121657-
Western Monmouth-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for western Monmouth County in New
Jersey.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ014-121657-
Eastern Monmouth-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for eastern Monmouth County in New
Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ015-121657-
Mercer-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Mercer County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ016-121657-
Salem-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Salem County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ017-121657-
Gloucester-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Gloucester County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ018-121657-
Camden-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Camden County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ019-121657-
Northwestern Burlington-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for northwestern Burlington County in
New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ020-121657-
Ocean-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for inland portions of Ocean County
in New Jersey.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ021-121657-
Cumberland-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Cumberland County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ022-121657-
Atlantic-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for inland portions of Atlantic
County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ023-121657-
Cape May-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Cape May County excluding the
Atlantic coast in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

NJZ024-121657-
Atlantic Coastal Cape May-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for the Atlantic coastal portions of
Cape May County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ025-121657-
Coastal Atlantic-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for coastal portions of Atlantic
County in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ026-121657-
Coastal Ocean-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for coastal portions of Ocean County
in New Jersey.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

NJZ027-121657-
Southeastern Burlington-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for southeastern Burlington County in
New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

MDZ012-121657-
Kent MD-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Kent County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

MDZ015-121657-
Queen Annes-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Queen Annes County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

MDZ019-121657-
Talbot-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Talbot County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

MDZ020-121657-
Caroline-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for Caroline County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

ANZ430-121657-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for upper Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

ANZ431-121657-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for lower Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

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

ANZ450-121657-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Monmouth County out 20 nm.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ451-121657-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Ocean County out 20 nm.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ452-121657-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Atlantic County out 20 nm.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ453-121657-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Cape May County out 20 nm.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ454-121657-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to the mouth of Delaware Bay out 20 nm.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

ANZ455-121657-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
1257 PM EDT Mon Sep 11 2023

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Sussex County out 20 nm.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.SPOTTER INFORMATION STATEMENT...

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

The radar

The Dover AFB radar (KDOX), 34 km away, was scanning. The volume nearest the first event began at 18:52 UTC.

Open the radar archive at this moment

Event by event

2 thunderstorm wind, 1 tornado. Local standard time, as filed.

Thunderstorm Wind, Sussex

When
September 11, 1:55 PM EST
Where
Sussex County, 2.13 mi NE of Dagsboro
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
38.570, -75.220

Report of several trees snapped and uprooted along a wooded area of Adams Road with several houses receiving roof damage and a couple sheds collapsed. Time estimated from radar. This was a result of a tornado.

Thunderstorm Wind, Sussex

When
September 11, 1:55 PM EST
Where
Sussex County, 2.57 mi ENE of Dagsboro
Measured
50 kt (58 mph) estimated gust
Reported by
Public
Coordinates
38.570, -75.210

Photos of several uprooted trees along Piney Neck Road at Marinas at Peppers Creek. Time estimated from radar. This was likely due to a tornado.

Tornado, Sussex

When
September 11, 1:55 PM EST to 1:57 PM EST
Where
Sussex County, 2.35 mi NE of Dagsboro to 2.5 mi SW of Oak Orchard
Rating
EF0
Path length
0.7 mi
Path width
370 yd
Reported by
NWS Storm Survey
Coordinates
38.574, -75.219

An EF-0 tornado occurred on the afternoon of September 11, 2023, in the Dagsboro area of Sussex County, Delaware. |The brief tornado began along Adams Road just east of Dagsboro where damage to multiple structures and trees was observed. A shed in a backyard of a home on Adams Road had partial roof and wall collapse, and an additional larger and more structurally sound shed just feet from the first one was shifted off of its foundation, had the door blown off, and had partial roof collapse. Damage to three homes along Adams Road was noted with glass windows blown out and partial siding and shingle loss. Numerous |large softwood trees were uprooted along the wood line behind the homes on Adams Road along and had large branches snapped off of the trunks.

Further south on Adams Road, very close to the intersection of Tingle Lane, minor loss of siding was noted on a home as well as some more tree and limb damage. This is likely where the tornado reached its maximum width of around 370 yards.

The tornado then continued a short distance down Piney Neck Road to near the intersection of Wild Goose Way where another softwood tree was uprooted in the backyard of a home. The tornado likely occluded at this point and lifted as no further damage was found further downstream.

The National Weather Service would like to thank Sussex County Emergency Management Agency, local Skywarn spotter coordinators, and the public for their assistance with this survey.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Delaware in 2023Every state in 2023This day in weather historyThe tornado archive for Delaware, 2023Warnings in Delaware, September 2023

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1140556, 1140557, 1140558.