A cold front moved through the mid-Atlantic on September 23. The environment ahead of the front was weakly to moderately unstable, with instability limited by cloud cover and seasonally weaker daytime heating versus the deep summer.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS PHI wrote it up.
A cold front moved through the mid-Atlantic on September 23. The environment ahead of the front was weakly to moderately unstable, with instability limited by cloud cover and seasonally weaker daytime heating versus the deep summer. Still, frontal forcing and moderate wind shear allowed a band of widespread showers and thunderstorms to develop ahead of the front. With fairly strong wind fields in place, storms became strong to severe at times, producing areas of damaging wind. Convection continued shifting east into the evening as the front made its way towards the Atlantic coast.
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 23, 8:29 AM EST, 43 minutes earlier.
Area Forecast Discussion
National Weather Service Mount Holly NJ
929 AM EDT Thu Sep 23 2021
.SYNOPSIS...
A cold front will move into the region today and pushing to the east
through tonight. High pressure will build into the Mid-Atlantic from
the southwest for Friday and Saturday. A weak cold front will cross
the region later Saturday followed by a return to high pressure for
Sunday through Tuesday. Yet another cold front will approach the
region later Tuesday.
&&
.NEAR TERM /THROUGH TONIGHT/...
Mid-Morning Update...
Very little change to the forecast this morning. Made some
adjustments to hourly PoPs based on radar trends, but overall
thinking remains the same. While the front approached a little
faster than expected overnight, it is now slowing down as it moves
into the area, and it will take most of the day for showers and
thunderstorms to move through. Eastern areas will even continue to
see breaks of sun for another couple hours before rain gradually
overspreads. We have already seen some impressive rainfall amounts
over eastern Maryland as cells train from south to north. As the
front crawls eastward, the risk for training cells and heavy rain
will gradually shift east as well. The potential remains for at least
localized flash flooding. Am not overly concerned about the severe
threat due to limited instability, but with a strong LLJ there
remains a threat for a convectively enhanced damaging wind gust, and
given strong low level SRH (shown nicely in 12z RAOBs from OKX and
WAL), still cannot entirely rule out an isolated tornado. Previous
discussion follows...
A few light showers have worked their way across the Delaware Valley
this morning, but a stronger line of showers and possibly some
embedded thunder is forming across the western Chesapeake Bay and is
expected to push eastward to the Eastern Shore later this morning.
Further to our west, a deeply occluded upper- level low is centered
over the Ohio Valley, with a rigorous dry slot working northward
between it and the associated cold/occluded front to its east.
One concern today with this front continues to be the flash flooding
threat with the area of greatest concern being the Lehigh Valley and
Poconos where orographic enhancement is likely to enhance heavy
rainfall potential. A swath of PWAT values exceeding two inches
just to our west continues to move towards our region this
morning. A big factor at play will be exactly how quickly the
front moves east with a rather abrupt end to the rainfall as the
dry slot moves into the region from west to east. Latest
guidance has suggested this may push eastward a little more
quickly, which has resulted in a slight decrease in rainfall
totals, though the risk for localized amounts exceeding three
inches still remains across eastern Pennsylvania. A Flash Flood
Watch remains in effect for much of the region along and west of
the I-95 corridor.
Another item of concern is the severe threat. The impressive
synoptic-level winds with the system will likely be mixed down to
the surface with some of the stronger showers and thunderstorms with
40 to 50-knot winds only a few thousand feet above the surface with
a very rigorous low level jet shooting from south to north ahead of
this front. With the more southeasterly flow at the surface and
southerly to south-southwesterly winds in this jet, the threat for
isolated tornadoes continues to remain. Any updrafts that can tap
into this pre-existing low-level wind shear will easily be able to
rotate. 0-3km SRH values from 200 to 300 m2/s2 largely support this
threat. The more surface heating and sunshine we see early today,
the greater the threat is likely to be. With forecast ML CAPEs
around 1000 J/kg across the I-95 corridor, this should be enough to
get a few stronger cells going.
Otherwise, highs today will be seasonably warm in the upper 70s to
near 80 and lows dropping into the upper 50s tonight behind the
front. Warmer values near the coast with the front not clearing the
region as fast. Highs tomorrow will be a little cooler in the low
70s.
&&
.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
The cold front pulls off to the east on Friday, allowing for dry air
to quickly push into our forecast area. With clearing skies and
plenty of sunshine, it will feel quite fall-like on Friday as highs
only rise into the 60s to lower 70s across the region. With dew
points in the 50s, it will feel much more comfortable than it has in
recent days.
With the skies remaining clear into Friday night and winds dropping
off, we should radiate fairly well. Overnight lows will drop into
the mid 40s to lower 50s across the area.
Saturday will feature high pressure building cresting overhead. A
few clouds around the region during the day but otherwise mostly
sunny skies are expected. Highs will be similar to Friday, through
with some slight warming aloft in the southwest flow it should be a
couple of degrees warmer. A weak cold front will approach from the
west as a deep upper trough pushes towards the area, moving through
later Saturday night. While there will be quite a bit of energy
available aloft, the front itself is moisture starved and we are not
expecting any showers to develop as it moves through and makes its
way offshore Saturday night.
&&
.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
Surface high pressure will build across the region for Sunday
through Tuesday, keeping the region dry. Aloft, a trough will dig
down and cross the region Sunday into Monday. While there is no
moisture associated with this trough passage, there should be some
cooler temperatures which will keep the highs on Sunday slightly
below normal and in the 60s to lower 70s through much of the region.
As we go through Monday and Tuesday, the air mass will moderate and
warm a few degrees each day.
A weak cold front will approach the region on Tuesday, passing
through Tuesday night. Some rain showers may accompany the front and
we can't rule out a few rumbles of thunder.
Ridging aloft along with surface high pressure will once again move
over the region for midweek with warmer and drier conditions
expected.
&&
.AVIATION /14Z THURSDAY THROUGH MONDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Today... A mix of MVFR with some remaining pockets of VFR should
continue through the morning as a frontal system and associated
rainfall slowly approaches. All terminals should drop to MVFR by
this afternoon, with widespread MVFR and localized IFR through this
evening with rounds of showers and thunderstorms, heavy at
times. Timing of the cold front has sped up slightly, thus
southeasterly winds from 15 to 20 knots through 20Z with gusts
up to 30 knots will begin to quickly shift westerly as the front
passes through the region. The front looks to pass slowly
across the region from 20Z at RDG to 22Z at the Philly terminals
to 06Z at ACY. Moderate to high confidence in overall trend,
lower confidence in exact timing of wind shift and categorical
shifts.
Tonight...A gradual improvement from lingering MVFR to VFR through
the early morning. West-southwesterly winds shifting to west-
northwest from 5 to 10 knots. Moderate confidence.
Friday...VFR with westerly winds from 5 to 10 knots. A few showers
may linger along the coast in the morning hours bringing probable
MVFR restrictions through 16Z. High confidence.
Outlook...
Friday night through Sunday...Mainly VFR expected. West to
northwest winds around 10 knots, increasing to 10 to 15 knots on
Sunday. High confidence.
Monday...Mainly VFR expected. West to southwest wind around 10 to 15
knots. High confidence.
&&
.MARINE...
Today...Southeasterly winds from 15 to 20 knots with gusts to 30
knots. Seas building to 4 to 7 feet with a few 8-foot breaking waves
possible. An SCA remains in effect for the Atlantic coastal
waters through the day. A Gale Warning remains in effect for the
Delaware Bay through 6 pm as the funneling of southeasterly flow
up the Bay allows for some gusts near to above 35 kt, the likes
of which have already been observed.
Tonight...Winds turning westerly and dropping to 10 to 15 knots but
seas will linger from 4 to 6 feet through the night, thus the SCA
remains in effect through the overnight for the Atlantic coastal
waters.
Friday...Northwesterly winds from 5 to 10 knots with gusts to 15
knots. Seas remaining elevated through 4 pm from 3 to 5 feet.
Outlook...
Friday night through Monday...No marine headlines are anticipated.
Westerly winds around 10 to 15 knots, with some gusts around 20
knots on Sunday. Seas generally around 2 to 4 feet.
Rip currents...
We have forecast a HIGH risk of dangerous rip currents for
today for both NJ and DE beaches, as winds become a little
stronger with an increasing swell.
A HIGH risk will continue for the NJ beaches on Friday with a
MODERATE risk expected at the DE beaches.
A Rip Current Statement is in effect for the DE beaches through
tonight and for the NJ beaches through Friday evening.
&&
.TIDES/COASTAL FLOODING...
Strong southerly flow in advance of the system moving through the
region today has already allowed for elevated water levels on the
eastern shore of Chesapeake Bay, which is expected to continue
through at least this morning. A coastal flood advisory remains in
effect for the eastern shore of Maryland through late this morning
as a result.
Water levels on the tidal Delaware River are also showing signs of
being elevated. At this time, confidence remains too low for the
issuance of an advisory, but we will continue to monitor the levels
closely through this morning. Rainfall today may exacerbate the
situation for this afternoons high tide, but confidence is not
particularly high, since the heaviest rainfall may occur after the
time of high tide.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flash Flood Watch through late tonight for PAZ070-071-102-104-
106.
Coastal Flood Advisory from 2 PM this afternoon to 7 PM EDT
this evening for PAZ070-071-106.
Flash Flood Watch through late tonight for PAZ054-055-060>062-
101-103-105.
NJ...Flash Flood Watch through late tonight for NJZ001-007>010-012-
015.
High Rip Current Risk through Friday evening for NJZ014-
024>026.
Coastal Flood Advisory until 3 PM EDT this afternoon for
NJZ016.
Coastal Flood Advisory from 2 PM this afternoon to 7 PM EDT
this evening for NJZ017>019.
DE...High Rip Current Risk until 8 PM EDT this evening for DEZ004.
Flash Flood Watch through late tonight for DEZ001.
Coastal Flood Advisory until 3 PM EDT this afternoon for
DEZ001.
MD...Coastal Flood Advisory until 10 AM EDT this morning for MDZ015-
019-020.
Coastal Flood Advisory until noon EDT today for MDZ012.
MARINE...Small Craft Advisory until 4 PM EDT Friday for ANZ450>455.
Gale Warning until 6 PM EDT this evening for ANZ430-431.
&&
Synopsis...Meola
Near Term...Davis/O'Brien
Short Term...Meola
Long Term...Meola
Aviation...Davis/Meola/O'Brien
Marine...Davis/Meola
Tides/Coastal Flooding...WFO PHIHazardous Weather Outlook National Weather Service Mount Holly NJ 1002 AM EDT Thu Sep 23 2021 DEZ001-241402- New Castle- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for New Castle County in Delaware. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. DEZ002-241402- Kent- 1002 AM EDT Thu Sep 23 2021 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...Friday through Wednesday. 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. DEZ003-241402- Inland Sussex- 1002 AM EDT Thu Sep 23 2021 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...Friday through Wednesday. 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. DEZ004-241402- Delaware Beaches- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for the Atlantic coastal portions of Sussex County in Delaware. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. There is a moderate risk of rip currents on Friday. 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. PAZ054-241402- Carbon- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Carbon County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ055-241402- Monroe- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Monroe County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ060-241402- Berks- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Berks County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ061-241402- Lehigh- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Lehigh County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ062-241402- Northampton- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Northampton County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ070-241402- Delaware- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Delaware County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ071-241402- Philadelphia- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Philadelphia County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ101-241402- Western Chester- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ102-241402- Eastern Chester- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for eastern Chester County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ103-241402- Western Montgomery- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for western Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ104-241402- Eastern Montgomery- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for eastern Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ105-241402- Upper Bucks- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for upper Bucks County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ106-241402- Lower Bucks- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for lower Bucks County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ001-241402- Sussex- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Sussex County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ007-241402- Warren- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Warren County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ008-241402- Morris- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Morris County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ009-241402- Hunterdon- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Hunterdon County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ010-241402- Somerset- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Somerset County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ012-241402- Middlesex- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Middlesex County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ013-241402- Western Monmouth- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for western Monmouth County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ014-241402- Eastern Monmouth- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for eastern Monmouth County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ015-241402- Mercer- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Mercer County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flash Flood Watch. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ016-241402- Salem- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Salem County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ017-241402- Gloucester- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Gloucester County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ018-241402- Camden- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Camden County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ019-241402- Northwestern Burlington- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for northwestern Burlington County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ020-241402- Ocean- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for inland portions of Ocean County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ021-241402- Cumberland- 1002 AM EDT Thu Sep 23 2021 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...Friday through Wednesday. 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. NJZ022-241402- Atlantic- 1002 AM EDT Thu Sep 23 2021 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...Friday through Wednesday. 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. NJZ023-241402- Cape May- 1002 AM EDT Thu Sep 23 2021 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...Friday through Wednesday. 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. NJZ024-241402- Atlantic Coastal Cape May- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for the Atlantic coastal portions of Cape May County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ025-241402- Coastal Atlantic- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for coastal portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ026-241402- Coastal Ocean- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for coastal portions of Ocean County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Rip Current Risk Statement. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ027-241402- Southeastern Burlington- 1002 AM EDT Thu Sep 23 2021 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...Friday through Wednesday. 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. MDZ012-241402- Kent MD- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Kent County in Maryland. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. MDZ015-241402- Queen Annes- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Queen Annes County in Maryland. .DAY ONE...Through tonight. Minor coastal flooding is possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. MDZ019-241402- Talbot- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Talbot County in Maryland. .DAY ONE...Through tonight. Minor coastal flooding is possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. MDZ020-241402- Caroline- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for Caroline County in Maryland. .DAY ONE...Through tonight. Minor coastal flooding is possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. ANZ430-241402- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for upper Delaware Bay. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. ANZ431-241402- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for lower Delaware Bay. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. ANZ450-241402- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Monmouth County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. ANZ451-241402- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Ocean County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. ANZ452-241402- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Atlantic County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. ANZ453-241402- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Cape May County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. ANZ454-241402- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to the mouth of Delaware Bay out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. ANZ455-241402- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 1002 AM EDT Thu Sep 23 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Sussex County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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.
Special Weather Statement
National Weather Service Mount Holly NJ
808 AM EDT Thu Sep 23 2021
MDZ012-015-019-231300-
Queen Anne's MD-Talbot MD-Kent MD-
808 AM EDT Thu Sep 23 2021
...Strong thunderstorms will impact portions of Talbot, western
Queen Anne's and western Kent Counties through 900 AM EDT...
At 805 AM EDT, Doppler radar was tracking strong thunderstorms on
Chesapeake Bay's upper eastern shore, moving north at 40 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Easton, Centerville, Talbot, Chestertown, Centreville, Trappe, St.
Michaels, Oxford, Betterton, Old Town, Grasonville, Copperville,
Newtown, Morgnec, Tilghman Island, Skipton, Langford, Chester,
Overton and Starkey Corner.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3876 7635 3886 7626 3879 7620 3879 7619
3897 7625 3891 7631 3893 7632 3884 7637
3885 7638 3907 7623 3932 7618 3938 7604
3937 7597 3861 7607 3877 7631 3867 7634
3877 7638
TIME...MOT...LOC 1207Z 185DEG 35KT 3852 7630
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
IovinoPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
923 AM EDT THU SEP 23 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0725 AM COASTAL FLOOD OXFORD 38.68N 76.17W
09/23/2021 TALBOT MD DEPT OF HIGHWAYS
MARYLAND ROUTE 333 WAS CLOSED IN OXFORD.
&&
DIPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
928 AM EDT THU SEP 23 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0610 AM COASTAL FLOOD 2 E CHESTER 38.97N 76.25W
09/23/2021 QUEEN ANNE'S MD DEPT OF HIGHWAYS
MARYLAND ROUTE 18 WAS CLOSED BETWEEN
SHAMROCK ROAD AND KENT NARROWS WAY NORTH.
&&
DISpecial Weather Statement
National Weather Service Mount Holly NJ
931 AM EDT Thu Sep 23 2021
MDZ012-015-019-231430-
Queen Anne's MD-Talbot MD-Kent MD-
931 AM EDT Thu Sep 23 2021
...Strong thunderstorms will impact portions of Talbot, Queen Anne's
and Kent Counties through 1030 AM EDT...
At 930 AM EDT, Doppler radar was tracking strong thunderstorms over
the upper eastern shore, moving north at 50 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Easton, Centerville, Chestertown, Centreville, Rock Hall, Trappe, St.
Michaels, Church Hill, Old Town, Grasonville, Starr, Copperville,
Newtown, Morgnec, Tilghman Island, Stevensville, Skipton, Langford,
Chester and Overton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3876 7635 3883 7619 3897 7625 3891 7631
3896 7631 3884 7637 3932 7618 3938 7595
3937 7591 3857 7604 3876 7622 3871 7628
3878 7629 3876 7632 3867 7634 3877 7638
TIME...MOT...LOC 1330Z 185DEG 49KT 3870 7620
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
IovinoPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1010 AM EDT THU SEP 23 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0950 AM COASTAL FLOOD SAINT MICHAELS 38.78N 76.22W
09/23/2021 TALBOT MD DEPT OF HIGHWAYS
A SECTION OF MARYLAND ROUTE 33 WAS CLOSED.
&&
DIThe Dover AFB radar (KDOX), 71 km away, was scanning. The volume nearest the first event began at 14:14 UTC.
1 thunderstorm wind. Local standard time, as filed.
Tree limbs and wires were downed near Wallis Rd. Time estimated from radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 2021Every state in 2021This day in weather historyWarnings in Maryland, September 2021
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: 980458.