Alert archive / Pennsylvania / Areal Flood Advisories in 2021

Areal Flood Advisory 183, NWS Philadelphia/Mount Holly

September 23, 2021Chester County, Pennsylvania

NWS Philadelphia/Mount Holly issued this areal flood advisory at Sep 23, 2021, 10:52 AM EDT for Chester County, Pennsylvania. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Sep 23, 2021, 10:52 AM EDT (14:52 UTC)
Expired
Sep 23, 2021, 2:00 PM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

County Chester County, PA

The radar

The Dover AFB radar (KDOX), 125 km from the middle of the area, began a volume at 14:51 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 2.9 hours before the alert went out and 156 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2021-09-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2021-09-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -71 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
517 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
-71 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.0

Open this sounding in Storm Lab

The text

As transmitted.

861 
WGUS81 KPHI 231452
FLSPHI

Flood Advisory
National Weather Service Mount Holly NJ
1052 AM EDT Thu Sep 23 2021

PAC029-231800-
/O.NEW.KPHI.FA.Y.0183.210923T1452Z-210923T1800Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chester PA-
1052 AM EDT Thu Sep 23 2021

The National Weather Service in Mount Holly has issued a

* Flood Advisory for...
  Western Chester County in southeastern Pennsylvania...

* Until 200 PM EDT.

* At 1052 AM EDT, Doppler radar indicated heavy rain due to 
  thunderstorms. Minor flooding is ongoing or expected to begin 
  shortly in the advisory area. Up to 1 inch of rain has fallen with 
  an additional 1 to 2 inches possible for some areas.

* Some locations that may experience flooding include...
  Coatesville, Oxford, Parkesburg, West Grove, Honey Brook, 
  Cochranville, Homeville, Mount Vernon, Kemblesville, Glen Roy, 
  Atglen, and South Coatesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

In hilly terrain there are hundreds of low water crossings which are 
potentially dangerous in heavy rain. Do not attempt to cross flooded 
roads. Find an alternate route.

&&

LAT...LON 3972 7612 3974 7612 3973 7609 3975 7610
      3976 7606 3981 7603 3983 7604 3983 7602
      3985 7602 3985 7601 3987 7600 3987 7599
      3993 7600 3993 7598 3995 7599 4004 7593
      4011 7594 4014 7586 3972 7579

$$

Robertson

What forecasters said that day

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

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this areal flood advisory went out at Sep 23, 10:44 AM EDT, 8 minutes earlier.

Area forecast discussion, Sep 23, 10:44 AM EDT, 8 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
1044 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 /15Z 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 resulted in elevated water levels on the eastern
shore of Chesapeake Bay, where some minor tidal flooding has
occurred. A Coastal Flood Advisory remains in effect for Kent
County until noon.

Water levels on the far upper Delaware Bay and on the tidal
Delaware River are also elevated due to the strong southeast
wind. We have issued a Coastal Flood Advisory for those areas
for this afternoon.

&&

.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 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 PHI
Hazardous weather outlook, Sep 23, 10:02 AM EDT, 50 minutes before
Hazardous 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.

In the hours before

Special weather statement, Sep 23, 8:08 AM EDT, 2 hours 44 minutes before
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

Iovino
Local storm report, Sep 23, 9:23 AM EDT, 1 hour 29 minutes before
PRELIMINARY 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.

&&

DI
Local storm report, Sep 23, 9:28 AM EDT, 1 hour 24 minutes before
PRELIMINARY 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.

&&

DI
Special weather statement, Sep 23, 9:31 AM EDT, 1 hour 21 minutes before
Special 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

Iovino
Local storm report, Sep 23, 10:10 AM EDT, 42 minutes before
PRELIMINARY 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.

&&

DI
Local storm report, Sep 23, 10:23 AM EDT, 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1023 AM EDT THU SEP 23 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1010 AM     FLASH FLOOD      QUEENSTOWN              38.99N 76.16W
09/23/2021                   QUEEN ANNE'S       MD   FIRE DEPT/RESCUE

            WATER RESCUE WITH A VEHICLE STRANDED AT THE
            INTERSECTION OF MELVIN AVE AND MAIN ST.

&&

JEO

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 23, 9:12 AM EDTCoastal Flood AdvisoryPHIBucks, Delaware, Philadelphia10 hr
Sep 23, 11:33 AM EDTAreal Flood AdvisoryPHIBerks, Chester, Delaware, Montgomery, Philadelphia3 hr
Sep 23, 11:40 AM EDTAreal Flood AdvisoryPHIBerks, Bucks, Carbon, Lehigh, Montgomery, Northampton3 hr
Sep 23, 11:57 AM EDTFlash Flood WarningPHIChester, Delaware3 hr
Sep 23, 12:12 PM EDTSevere Thunderstorm WarningPHIChester, Delaware, Montgomery, Philadelphia48 min
Sep 23, 12:28 PM EDTFlash Flood WarningPHIChester, Delaware, Montgomery, Philadelphia4 hr
Sep 23, 12:54 PM EDTSpecial Weather StatementPHIPhiladelphia51 min
Sep 23, 12:56 PM EDTAreal Flood AdvisoryPHIBucks, Carbon, Lehigh, Monroe, Montgomery, Northampton and 1 more3 hr
Sep 23, 12:57 PM EDTSpecial Weather StatementPHIBucks33 min
Sep 23, 1:13 PM EDTSevere Thunderstorm WarningPHIBucks, Delaware, Montgomery, Philadelphia47 min
Sep 23, 1:42 PM EDTFlash Flood WarningPHIBucks, Delaware, Montgomery, Philadelphia4 hr
Sep 23, 1:48 PM EDTRiver Flood WarningPHIChester5 hr
Sep 23, 1:58 PM EDTSpecial Weather StatementPHIBucks32 min
Sep 23, 2:37 PM EDTAreal Flood AdvisoryPHIBucks, Northampton3 hr
Sep 23, 3:26 PM EDTFlash Flood WarningPHIBucks2 hr
Sep 23, 4:26 PM EDTAreal Flood WarningPHIChester, Delaware, Montgomery, Philadelphia80 min
Sep 23, 7:18 PM EDTAreal Flood WarningPHIBerks, Montgomery36 min

Nearby

Areal Flood Advisories in Pennsylvania, 2021Every areal flood advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.