Alert archive / Pennsylvania / Flash Flood Warnings in 2021

Flash Flood Warning 61, NWS Philadelphia/Mount Holly

August 28, 2021Bucks County, Montgomery County, Northampton County, Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 28, 2021, 9:06 AM EDT for Bucks County, Montgomery County, Northampton County, Pennsylvania. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 28, 2021, 9:06 AM EDT (13:06 UTC)
Expired
Aug 28, 2021, 12:00 PM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Bucks County, PA, Montgomery County, PA, Northampton County, PA

The radar

The Philadelphia radar (KDIX), 87 km from the middle of the area, began a volume at 13:10 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.

What was reported inside it

TimeReportWhereRemark
Aug 28, 9:50 AM EDTFLASH FLOOD1 Ene Worcester Twp, PAWATER RESCUE ON SHULTZ ROAD. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 44 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 1.1 hours before the alert went out and 204 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, Brookhaven, NY at 12:00Z on 2021-08-28Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2021-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.1939Sfc1 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
672 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

402 
WGUS51 KPHI 281306
FFWPHI
PAC017-091-095-281600-
/O.NEW.KPHI.FF.W.0061.210828T1306Z-210828T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mount Holly NJ
906 AM EDT Sat Aug 28 2021

The National Weather Service in Mount Holly has issued a

* Flash Flood Warning for...
  Southern Northampton County in eastern Pennsylvania...
  Northwestern Bucks County in southeastern Pennsylvania...
  Central Montgomery County in southeastern Pennsylvania...

* Until noon EDT.

* At 906 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flooding of small creeks and streams, urban areas,
           highways, streets, and underpasses as well as other
           drainage and low lying areas.

* Some locations that may experience flash flooding include...
  Lansdale, East Norriton, Quakertown, Perkasie, Doylestown, 
  Hatboro, Souderton, Bedminster, Chalfont, Hatfield, Dublin, and 
  Ferndale.

This includes the following highways...
	Northeast Extension between mile markers 25 and 44.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 4042 7547 4060 7526 4061 7520 4059 7519
      4058 7519 4057 7519 4055 7514 4045 7513
      4031 7508 4023 7497 4018 7509 4017 7536

FLASH FLOOD...RADAR INDICATED

$$

NC
2 follow-up statements
961 
WGUS71 KPHI 281353
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
953 AM EDT Sat Aug 28 2021

PAC095-281403-
/O.CAN.KPHI.FF.W.0061.000000T0000Z-210828T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northampton PA-
953 AM EDT Sat Aug 28 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHERN NORTHAMPTON 
COUNTY...

Flooding is no longer expected to pose a threat. Please continue to 
heed remaining road closures.

LAT...LON 4035 7543 4036 7539 4039 7531 4040 7526
      4035 7521 4029 7513 4022 7508 4018 7509
      4017 7536 4023 7539 4027 7540

$$

PAC017-091-281600-
/O.CON.KPHI.FF.W.0061.000000T0000Z-210828T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bucks PA-Montgomery PA-
953 AM EDT Sat Aug 28 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL NOON EDT TODAY FOR 
WEST CENTRAL BUCKS AND CENTRAL MONTGOMERY COUNTIES...

At 953 AM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 2 inches of rain have 
fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flooding of small creeks and streams, urban areas,
         highways, streets, and underpasses as well as other
         drainage and low lying areas.

Some locations that may experience flash flooding include...
  Lansdale, East Norriton, Perkasie, Hatboro, Souderton, Chalfont, 
  Hatfield, Fricks, Horsham, Skippack, Telford, and Sellersville.

This includes the following highways...
	Northeast Extension between mile markers 25 and 38.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around...don't drown when encountering flooded roads. Most 
flood deaths occur in vehicles.

&&

LAT...LON 4035 7543 4036 7539 4039 7531 4040 7526
      4035 7521 4029 7513 4022 7508 4018 7509
      4017 7536 4023 7539 4027 7540

FLASH FLOOD...RADAR INDICATED

$$

NC
499 
WGUS71 KPHI 281604
FFSPHI

Flash Flood Statement
National Weather Service Mount Holly NJ
1204 PM EDT Sat Aug 28 2021

PAC017-091-281614-
/O.EXP.KPHI.FF.W.0061.000000T0000Z-210828T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bucks PA-Montgomery PA-
1204 PM EDT Sat Aug 28 2021

...FLASH FLOOD WARNING HAS EXPIRED FOR WEST CENTRAL BUCKS AND 
CENTRAL MONTGOMERY COUNTIES...

The rain has lightened up across Bucks County minimizing the flood 
threat. As a result, the Flash Flood Warning has been allowed to 
expire here.

A new Flash Flood Warning has been issued for portions of Montgomery 
County south through Philadelphia and into New Jersey. Please refer 
to this new Flash Flood Warning for more information.

LAT...LON 4035 7543 4036 7539 4039 7531 4040 7526
      4035 7521 4029 7513 4022 7508 4018 7509
      4017 7536 4023 7539 4027 7540

$$

Kruzdlo

What forecasters said that day

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

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this flash flood warning went out at Aug 28, 6:31 AM EDT, 2 hours 35 minutes earlier.

Area forecast discussion, Aug 28, 6:31 AM EDT, 2 hours 35 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
631 AM EDT Sat Aug 28 2021

.SYNOPSIS...
A weak frontal boundary will become nearly stationary in or just
south of the area today, with low pressure drifting
southeastward into the western Atlantic through tonight. The
front will lift back through the region by Sunday night. A cold
front will then move southeastward through the Northeast early
next week. The remnants of Hurricane Ida will progress
northeastward along the front during the middle to latter
portions of the week.

&&

.NEAR TERM /THROUGH TONIGHT/...
Showers and thunderstorms from earlier in the overnight hours
have tapered off. The cold front runs across Pennsylvania and
northern New Jersey will continue to sag southward this
morning. Another area of showers is developing over New York
Harbor, around Middlesex and Monmouth counties. This will be
the wave of showers and eventual thunderstorms that will impact
eastern New Jersey later today.

Otherwise, there is some strong shortwave energy over southern
New Jersey, and this will interact with the front to allow for a
weak wave of low pressure to develop in that area. Cooler air
sags into northern New Jersey and the southern Poconos, so
although scattered showers and thunderstorms are possible here,
PoPs will be fairly low, and not expecting heavy rain. Onshore
flow south of the front will allow for moisture to increase, and
PWATs will be in excess of 2.5 inches across southern New
Jersey. Instability will be high here, as well, with SB CAPE
values around 2000 J/kg.

The focus will be on southern New Jersey, and that is where the
heavy rain will be focused. Flash Flood Watch remains in effect
for portions of southern and eastern New Jersey.

Really not a great day, as onshore flow will also allow for
status to develop. So not expecting much in the way of sunshine,
except for maybe portions of Delmarva, where it remains south
of the cold front, and thus, it will stay quite warm and humid.

A wide range of high temperatures on tap for today, with highs
in the low to mid 70s in the southern Poconos and northern New
Jersey, and generally in the mid to upper 70s to around 80 in
southeast Pennsylvania and southern New Jersey. Southern
Delmarva will be in the mid to upper 80s.

Showers taper off tonight, and with abundant low level moisture
over the area, patchy fog is possible once again. Lows tonight
generally in the 60s to low 70s.

&&

.SHORT TERM /SUNDAY THROUGH MONDAY NIGHT/...
The large-scale pattern will feature a strong midlevel ridge in
the southeastern U.S. with a weak, convectively-enhanced
vorticity maximum drifting southeastward through the
central/southern Mid-Atlantic and adjacent western Atlantic.
Meanwhile, a potent vort max will lift northeastward from the
Upper Midwest at 12z Sunday to southeastern Canada by Monday
night. This will allow dangerous Hurricane Ida to progress
northwestward toward the central Gulf Coast, likely making
landfall Sunday night.

For our area, the lingering effects of the weak mesoscale
convective vortex (MCV) and the stalling frontal boundary will
dominate our weather Sunday and Monday. The MCV will likely have
drifted far enough southeastward for its influence to remain
generally off the coast by Sunday morning, though cannot rule
out some lingering precipitation in coastal areas of southern
New Jersey and Delaware. Meanwhile, the cold front sinking
southward through the region today will begin its return
northeastward as a warm front, in response to the northern-
stream system lifting northeastward into the Upper Great Lakes
and vicinity.

With onshore flow to the north of the southward-shifting MCV-
like feature, this should lead to combined orographic lift and
convergence along the returning warm front. Though not expecting
widespread convection in this regime, there will likely be some
isolated to scattered showers/storms during peak heating. High
temperatures will be a challenge owing to uncertainty associated
with the returning front as well as lingering cooling effects
from onshore flow to the north. The warmest temperatures should
be in the south/west portions of the CWA (likely at least middle
80s), while areas north of Interstate 80 may remain in the 70s.
Convection will likely wane Sunday night, with warm/muggy
conditions returning with the front's retreat northeastward.

This sets up a hot/humid day Monday, with another round of heat
indices approaching advisory levels. Models are likely slightly
conservative with temperatures, so the forecast may end up a
little bit hotter than it is currently.

A cold front attendant to the large-scale trough in southeast
Canada will begin its push southeastward into the northern Mid-
Atlantic Monday, likely moving into the region Monday night.
With diurnal heating in advance of the front, should be another
day of scattered convection across much of the Northeast. High
precipitable water values (near/above 2 inches), weak
tropospheric winds, and ample instability will lead to another
day of slow-moving pulse storms capable of localized flooding
and isolated downbursts. Precipitation may continue through
Monday night (though likely less intense and lower in coverage),
given the somewhat stronger large-scale lift expected with the
approaching front.

&&

.LONG TERM /TUESDAY THROUGH FRIDAY/...
The main concern in the long-range period remains the potential
influence of what will become the remnants of Ida.

As the early-week front slowly sags southeastward through the
Mid-Atlantic, Ida will lift northeastward along the southwest
tail of the front in the Mid-South, acquiring baroclinic
characteristics as the northern-stream trough provides
considerable large-scale lift downstream. A southwest-to-
northeast baroclinic zone collocated with strong low-level
convergence and upper-level divergence will result in widespread
precipitation in much of the Ohio/Tennessee Valleys
northeastward into the Mid-Atlantic during the Tuesday-to-
Thursday period. Models are in decent agreement for this time
range, with the main differences generally focused on the timing
of the remnant low of Ida as well as the exact placement of the
surface front (which will strongly influence the zone of
heaviest rainfall attendant to Ida's passage).

What is clear is that considerable precipitation is likely near
the baroclinic zone, via the synoptic ingredients mentioned
above as well as the copious moisture advected northward in
advance of Ida. Heavy rainfall will be a substantial threat with
this system, with hydrologic impacts probable in portions of our
area, with model consensus in the Wednesday to Thursday morning
time window. Confidence is increasing that widespread
precipitation will occur in our area during this period, so have
increased PoPs to high-end chance to likely. Stay tuned to the
latest forecasts, as confidence will inevitably increase
regarding the precise track of the remnant low and the
associated axis of highest QPF.

Regarding temperatures...Tuesday may remain quite warm as the
sinking front lingers near or in the area, but widespread
precipitation will likely keep readings lower (possibly mostly
in the 70s or lower 80s) Wednesday and Thursday.

A period of dry and cooler weather will likely occur after the
remnants of Ida move through the eastern U.S., with Labor Day
weekend looking potentially pretty nice.

&&

.AVIATION /12Z SATURDAY THROUGH WEDNESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.

Today (12Z through 00Z)...Main focus for SHRA/TSRA development
with VSBY restrictions in heavy rain will be at KMIV/KACY,
though scattered SHRA/TSRA possible at the other terminals
(KRDG/KABE/KTTN/KPNE/KPHL/KILG). MVFR/IFR CIGs will develop
throughout. E Winds 5-10 kt. High confidence on CIG
restrictions, low confidence on timing of SHRA/TSRA. High
confidence on winds.

Tonight (00Z through 12Z)...Sub-VFR conditions in fog/stratus.
LGT/VRB winds. High confidence.

Outlook...

Sunday and Sunday night...Mainly VFR, though some sub-VFR
conditions may occur, primarily with either scattered
showers/storms during the day or patchy fog during the night.
East winds up to 10 kt becoming light southerly Sunday night.
Moderate confidence.

Monday and Monday night...A chance of showers/storms Monday
afternoon through the night, with brief restrictions likely in
their proximity. Winds generally southwest up to 10 kt becoming
more westerly Monday night. Moderate confidence.

Tuesday and Tuesday night...Mainly VFR with light northwest
winds. A slight chance of showers and storms. Low confidence.

Wednesday...Periods of sub-VFR likely with increasing chances
for rain and storms. Variable winds primarily 10 kt or less.
Moderate confidence.

&&

.MARINE...
Today and tonight...Winds and seas will increase, especially
for the northern NJ ocean waters. A Small Craft Advisory remains
in effect for ANZ450-451 as winds will gust to 25 kt and seas
will build to 4-6 feet. For the rest of the waters, wind gusts
will be up to 20 kt, and seas will be 2-4 feet.

Outlook...

Sunday through Wednesday...Sub-advisory conditions expected.
Chances of showers and storms through much of the period, with
the best chances Monday afternoon and night and again on
Wednesday.

Rip Currents...

There is a LOW risk for the development of dangerous and life
threatening rip currents for the NJ and DE beaches. However,
conditions may become stronger at Monmouth and Ocean counties
depending on how strong winds get,

The LOW risk continues into Sunday.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...Flash Flood Watch through this evening for NJZ020>022-026-027.
DE...None.
MD...None.
MARINE...Small Craft Advisory until 6 AM EDT Sunday for ANZ450-451.

&&

Synopsis...CMS
Near Term...MPS
Short Term...CMS
Long Term...CMS
Aviation...CMS/MPS
Marine...CMS/MPS
Hazardous weather outlook, Aug 28, 4:55 AM EDT, 4 hours 11 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
0455 AM EDT Sat Aug 28 2021

DEZ001-290855-
New Castle-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hot conditions could result in heat exhaustion with prolonged exposure
on Monday.

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.

DEZ002-290855-
Kent-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

DEZ003-290855-
Inland Sussex-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

DEZ004-290855-
Delaware Beaches-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ054-290855-
Carbon-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Carbon County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ055-290855-
Monroe-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Monroe County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ060-290855-
Berks-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Berks County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ061-290855-
Lehigh-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Lehigh County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ062-290855-
Northampton-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Northampton County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ070-290855-
Delaware-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Delaware County in Pennsylvania.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hot conditions could result in heat exhaustion with prolonged exposure
on Monday.

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.

PAZ071-290855-
Philadelphia-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Philadelphia County in
Pennsylvania.

.DAY ONE...Through tonight.

There is a low probability of widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Hot conditions could result in heat exhaustion with prolonged exposure
on Monday.

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.

PAZ101-290855-
Western Chester-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ102-290855-
Eastern Chester-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ103-290855-
Western Montgomery-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ104-290855-
Eastern Montgomery-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ105-290855-
Upper Bucks-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

PAZ106-290855-
Lower Bucks-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ001-290855-
Sussex-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ007-290855-
Warren-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ008-290855-
Morris-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ009-290855-
Hunterdon-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ010-290855-
Somerset-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ012-290855-
Middlesex-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ013-290855-
Western Monmouth-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

NJZ014-290855-
Eastern Monmouth-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ015-290855-
Mercer-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ016-290855-
Salem-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ017-290855-
Gloucester-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ018-290855-
Camden-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ019-290855-
Northwestern Burlington-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ020-290855-
Ocean-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for inland 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.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ021-290855-
Cumberland-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Cumberland 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...Sunday through Friday.

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.

NJZ022-290855-
Atlantic-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for inland 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.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ023-290855-
Cape May-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

NJZ024-290855-
Atlantic Coastal Cape May-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ025-290855-
Coastal Atlantic-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ026-290855-
Coastal Ocean-
0455 AM EDT Sat Aug 28 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.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

NJZ027-290855-
Southeastern Burlington-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for southeastern 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.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

MDZ012-290855-
Kent MD-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Kent County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

MDZ015-290855-
Queen Annes-
0455 AM EDT Sat Aug 28 2021

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

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

MDZ019-290855-
Talbot-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Talbot County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

MDZ020-290855-
Caroline-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for Caroline County in Maryland.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

ANZ430-290855-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for upper Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

ANZ431-290855-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
0455 AM EDT Sat Aug 28 2021

This Hazardous Weather Outlook is for lower Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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.

ANZ450-290855-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

ANZ451-290855-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

ANZ452-290855-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

ANZ453-290855-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

ANZ454-290855-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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.

ANZ455-290855-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
0455 AM EDT Sat Aug 28 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...Sunday through Friday.

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

Local storm report, Aug 28, 4:34 AM EDT, 4 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
434 AM EDT SAT AUG 28 2021

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

0432 AM     FLASH FLOOD      2 E SOUTH HEIDELBERG TW 40.30N 76.03W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            GELSINGER ROAD AND WHEATFIELD ROAD CLOSED
            FROM FLOODING. TIME BASED ON DISPATCH
            REPORT.

&&

CMS
Local storm report, Aug 28, 5:50 AM EDT, 3 hours 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
550 AM EDT SAT AUG 28 2021

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

0500 AM     FLASH FLOOD      1 ENE SOUTH HEIDELBERG  40.30N 76.05W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            PORTIONS OF FRITZTOWN ROAD WASHED OUT FROM
            FLASH FLOODING. TIME BASED ON DISPATCH
            REPORT.

&&

CMS
Local storm report, Aug 28, 5:52 AM EDT, 3 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
552 AM EDT SAT AUG 28 2021

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

0530 AM     FLASH FLOOD      1 W SINKING SPRING      40.33N 76.03W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            FLASH FLOODING FORCED THE CLOSURE OF PARK
            AVENUE AT PENN AVENUE. TIME BASED ON
            DISPATCH REPORT.

&&

CMS
Local storm report, Aug 28, 6:30 AM EDT, 2 hours 36 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
630 AM EDT SAT AUG 28 2021

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

1233 PM     TSTM WND DMG     2 NE TOBYHANNA          41.20N 75.39W
08/27/2021                   MONROE             PA   UTILITY COMPANY

            DOWNED TREE LIMBS AND WIRES NEAR COUNTRY
            PLACE DRIVE. TIME ESTIMATED FROM RADAR AND
            OUTAGE REPORTS.

0136 PM     TSTM WND DMG     2 N TOBYHANNA TWP       41.15N 75.54W
08/27/2021                   MONROE             PA   UTILITY COMPANY

            DOWNED WIRES NEAR MAPLE DRIVE. TIME
            ESTIMATED FROM RADAR.

0159 PM     TSTM WND DMG     1 NW TUNKHANNOCK TWP    41.03N 75.49W
08/27/2021                   MONROE             PA   UTILITY COMPANY

            DOWNED WIRES NEAR STATE ROUTE 115. TIME
            ESTIMATED FROM RADAR.

0204 PM     TSTM WND DMG     1 NNE CALN TWP          40.02N 75.75W
08/27/2021                   CHESTER            PA   COUNTY OFFICIAL

            MULTIPLE TREES DOWN ON OSBORNE ROAD. TIME
            ESTIMATED FROM RADAR.

0205 PM     TSTM WND DMG     1 NNW CALN TWP          40.01N 75.76W
08/27/2021                   CHESTER            PA   911 CALL CENTER

            SEVERAL TREES REPORTED DOWN AROUND CALN
            TOWNSHIP. TIME ESTIMATED FROM RADAR.

0209 PM     FLOOD            1 SSW EAST BRANDYWINE T 40.02N 75.78W
08/27/2021                   CHESTER            PA   COUNTY OFFICIAL

            DOWNED TREE ON HADFIELD ROAD. TIME ESTIMATED
            FROM RADAR.

0210 PM     TSTM WND DMG     1 NW CALN TWP           40.01N 75.76W
08/27/2021                   CHESTER            PA   911 CALL CENTER

            SEVERAL LARGE BRANCHES DOWN BLOCKING
            TRAFFIC. TIME ESTIMATED FROM RADAR.

0213 PM     TSTM WND DMG     2 SW EAST BRANDYWINE TW 40.01N 75.79W
08/27/2021                   CHESTER            PA   COUNTY OFFICIAL

            MULTIPLE TREES DOWN ON HURLEY ROAD. TIME
            ESTIMATED FROM RADAR.

0218 PM     TSTM WND DMG     1 ESE WAGONTOWN         40.00N 75.82W
08/27/2021                   CHESTER            PA   COUNTY OFFICIAL

            SEVERAL TREES DOWN IN THE AREA OF PRATTS DAM
            ROAD. TIME ESTIMATED FROM RADAR.

0220 PM     TSTM WND DMG     2 SE EAST BRANDYWINE TW 40.02N 75.74W
08/27/2021                   CHESTER            PA   911 CALL CENTER

            TREE AND POLE DOWN IN THE 900 BLOCK OF
            HORSESHOE PIKE. TIME ESTIMATED FROM RADAR.

0226 PM     TSTM WND DMG     1 SE KRESGEVILLE        40.89N 75.48W
08/27/2021                   MONROE             PA   DEPT OF HIGHWAYS

            DOWNED TREE IN WIRES ON MOLASSES VALLEY
            ROAD. TIME ESTIMATED FROM RADAR.

0230 PM     TSTM WND DMG     1 N COATESVILLE         39.99N 75.83W
08/27/2021                   CHESTER            PA   PUBLIC

            TREES DOWN ALONG ROUTE 84 BETWEEN 30 BYPASS
            AND 30 BUSINESS JUST NORTH OF COATESVILLE.
            TIME ESTIMATED FROM RADAR.

0230 PM     TSTM WND DMG     1 NNE COATESVILLE       40.00N 75.81W
08/27/2021                   CHESTER            PA   911 CALL CENTER

            MULTIPLE TREES DOWN AT ROUTE 30 BYPASS AND
            MOORE ROAD. TIME ESTIMATED.

0234 PM     TSTM WND DMG     2 SSW GILBERT           40.88N 75.45W
08/27/2021                   MONROE             PA   UTILITY COMPANY

            DOWNED TREE LIMBS AND WIRES NEAR BLACKBERRY
            LANE. TIME ESTIMATED FROM RADAR.

0239 PM     TSTM WND DMG     HOPE                    40.91N 74.97W
08/27/2021                   WARREN             NJ   UTILITY COMPANY

            DOWNED TREES AND WIRES NEAR MOUNT HERMON
            ROAD. TIME ESTIMATED FROM RADAR.

0242 PM     TSTM WND DMG     VALLEY TWP              39.98N 75.85W
08/27/2021                   CHESTER            PA   COUNTY OFFICIAL

            DOWNED TREE ON RAINBOW ROAD NEAR WEST
            LINCOLN HIGHWAY. TIME ESTIMATED FROM RADAR.

0250 PM     TSTM WND DMG     GREAT MEADOWS           40.87N 74.92W
08/27/2021                   WARREN             NJ   TRAINED SPOTTER

            SMALL AREA OF LIMBS DOWN JUST WEST OF GREAT
            MEADOWS ALONG US 46. TIME ESTIMATED FROM
            RADAR.

0255 PM     TSTM WND DMG     1 WSW LIBERTY TWP       40.87N 74.97W
08/27/2021                   WARREN             NJ   UTILITY COMPANY

            DOWNED TREES AND WIRES NEAR MOUNTAIN LAKE
            ROAD. TIME ESTIMATED FROM RADAR.

0258 PM     TSTM WND DMG     1 SSW GREAT MEADOWS     40.86N 74.92W
08/27/2021                   WARREN             NJ   UTILITY COMPANY

            DOWNED TREES AND WIRES NEAR HUDSON LANE.
            TIME ESTIMATED FROM RADAR.

0259 PM     TSTM WND DMG     1 SW GREAT MEADOWS      40.86N 74.92W
08/27/2021                   WARREN             NJ   PUBLIC

            AN MPING REPORT OF DOWNED TREE LIMBS.

0300 PM     TSTM WND DMG     1 ENE BERKELEY TWP      39.93N 74.28W
08/27/2021                   OCEAN              NJ   UTILITY COMPANY

            DOWNED WIRES NEAR PINEWALD KESWICK ROAD.
            TIME ESTIMATED FROM RADAR.

0302 PM     TSTM WND DMG     3 W LIBERTY TWP         40.86N 75.02W
08/27/2021                   WARREN             NJ   TRAINED SPOTTER

            SPOTTER REPORTED SEVERAL DOWNED TREE LIMBS
            AND BEING BLOWN OVER WHILE ATTEMPTING TO
            CLOSE BARN DOORS. TIME ESTIMATED FROM RADAR.

0303 PM     FLOOD            1 NNE SOUTH COATESVILLE 39.99N 75.80W
08/27/2021                   CHESTER            PA   COUNTY OFFICIAL

            VEHICLE STUCK IN FLOOD WATERS ON FOUNDRY
            STREET. TIME BASED ON DISPATCH REPORT.

0310 PM     TSTM WND DMG     1 ENE LAKEWOOD TWP      40.10N 74.20W
08/27/2021                   OCEAN              NJ   UTILITY COMPANY

            TREES DOWN ON POWERLINES. TIME ESTIMATED
            FROM RADAR.

0320 PM     TSTM WND GST     BERKELEY TWP            39.93N 74.30W
08/27/2021  M49 MPH          OCEAN              NJ   MESONET

            49 MPH MEASURED WIND GUST AT BERKELEY NJ
            MESONET SITE.

0321 PM     TSTM WND DMG     3 WNW TOMS RIVER        39.97N 74.24W
08/27/2021                   OCEAN              NJ   UTILITY COMPANY

            DOWNED WIRES NEAR GERMANIA STATION ROAD.
            TIME ESTIMATED FROM RADAR.

0337 PM     TSTM WND DMG     ROOSEVELT CITY          39.94N 74.38W
08/27/2021                   OCEAN              NJ   UTILITY COMPANY

            DOWNED WIRES NEAR MONROE AVENUE. TIME
            ESTIMATED FROM RADAR.

0455 PM     HAIL             MONROE TWP              39.67N 74.97W
08/27/2021  E0.70 INCH       GLOUCESTER         NJ   PUBLIC

0510 PM     TSTM WND DMG     MONROE TWP              39.67N 74.97W
08/27/2021                   GLOUCESTER         NJ   PUBLIC

            CORRECTS PREVIOUS TSTM WND DMG REPORT FROM
            MONROE TWP. CORRECTS PREVIOUS TSTM WND DMG
            REPORT FROM MONROE TWP. STRONG WINDS SNAPPED
            AN OLD TREE TRUNK. TIME ESTIMATED FROM
            RADAR.

0555 PM     FLASH FLOOD      SAYREVILLE              40.46N 74.35W
08/27/2021                   MIDDLESEX          NJ   PUBLIC

            WATER RESCUE REPORTED ON WASHINGTON ROAD IN
            SAYREVILLE. TIME ESTIMATED.

0631 PM     TSTM WND DMG     1 NNE WERNERSVILLE      40.34N 76.07W
08/27/2021                   BERKS              PA   FIRE DEPT/RESCUE

            DOWNED TREES AND WIRES NEAR STEELY ROAD AND
            CHURCH ROAD. TIME ESTIMATED FROM RADAR.

0631 PM     TSTM WND DMG     2 N HEIDELBERG TWP      40.39N 76.17W
08/27/2021                   BERKS              PA   UTILITY COMPANY

            DOWNED TREE LIMBS AND WIRES WEST OF REIDER
            ROAD. TIME ESTIMATED FROM RADAR.

0636 PM     TSTM WND DMG     2 NE MARION TWP         40.42N 76.16W
08/27/2021                   BERKS              PA   UTILITY COMPANY

            DOWNED TREES AND WIRES NEAR STATION ROAD.
            TIME ESTIMATED FROM RADAR.

0700 PM     TSTM WND DMG     1 ENE PENN TWP          40.47N 76.06W
08/27/2021                   BERKS              PA   FIRE DEPT/RESCUE

            MULTIPLE REPORTS OF TREES DOWN BETWEEN PENN
            TWP AND CENTERPORT. TIME ESTIMATED FROM
            RADAR.

0709 PM     TSTM WND DMG     1 SE CENTRE TWP         40.46N 76.01W
08/27/2021                   BERKS              PA   UTILITY COMPANY

            A FEW REPORTS OF DOWNED TREES AND WIRES IN
            CENTRE TWP. TIME ESTIMATED FROM RADAR.

0723 PM     TSTM WND DMG     STEVENSVILLE            39.00N 76.31W
08/27/2021                   QUEEN ANNES       MD   BROADCAST MEDIA

            TREE FEEL INTO A RESIDENCE ON CLOVERFIELDS
            DR. NO INJURIES.

0731 PM     TSTM WND DMG     1 SSW SAINT MICHAELS    38.78N 76.23W
08/27/2021                   TALBOT             MD   UTILITY COMPANY

            DOWNED TREE LIMBS AND WIRES NEAR GRACE
            STREET. TIME ESTIMATED FROM RADAR.

0733 PM     TSTM WND DMG     SAINT MICHAELS          38.79N 76.22W
08/27/2021                   TALBOT             MD   UTILITY COMPANY

            DOWNED WIRES NEAR PERRY CABIN LANE. TIME
            ESTIMATED FROM RADAR.

0316 AM     FLOOD            PROSPECT PARK           39.89N 75.31W
08/28/2021                   DELAWARE           PA   FIRE DEPT/RESCUE

            VEHICLE STUCK IN FLOOD WATERS REQUIRING
            ASSISTANCE NEAR 11TH AVENUE AND MARYLAND
            AVENUE. TIME BASED ON DISPATCH REPORT.

0325 AM     FLOOD            1 NNW WEST LAWN         40.34N 76.00W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            FLOODING ON LAUREL COURT. TIME BASED ON
            DISPATCH REPORT.

0337 AM     FLOOD            1 SE LEESPORT           40.44N 75.96W
08/28/2021                   BERKS              PA   PUBLIC

            MPING REPORT OF MINOR FLOODING NEAR ORCHARD
            LANE.

0349 AM     FLOOD            1 ENE TINICUM TWP       39.88N 75.26W
08/28/2021                   DELAWARE           PA   DEPT OF HIGHWAYS

            FLOODING ON INTERSTATE 95 NEAR BARTRAM
            AVENUE WITH LANE RESTRICTIONS. TIME BASED ON
            DISPATCH REPORT.

0355 AM     FLOOD            SOUTH HEIDELBERG TWP    40.30N 76.06W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            FLOODING ON FRITZTOWN ROAD. TIME BASED ON
            DISPATCH REPORT.

0409 AM     FLOOD            1 ESE LEESPORT          40.45N 75.94W
08/28/2021                   BERKS              PA   PUBLIC

            MPING REPORT OF FLOODING ON ONTELAUNEE
            DRIVE.

0410 AM     FLASH FLOOD      1 S MUHLENBERG TWP      40.37N 75.93W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            MULTIPLE VEHICLES STUCK IN WATER WITH WATER
            RESCUES REQUIRED NEAR THE INTERSECTION OF
            ROUTE 12 AND STATE HIGHWAY 61. TIME BASED ON
            DISPATCH REPORT.

0420 AM     FLASH FLOOD      SOUTH HEIDELBERG TWP    40.30N 76.06W
08/28/2021                   BERKS              PA   DEPT OF HIGHWAYS

            FLASH FLOODING ON FRITZTOWN ROAD RESULTING
            IN CLOSURES. TIME BASED ON DISPATCH REPORT.

0425 AM     FLASH FLOOD      1 ENE SOUTH HEIDELBERG  40.30N 76.05W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            CHAPEL HILL ROAD FLOODED AND IMPASSABLE.
            TIME BASED ON DISPATCH REPORT.

0430 AM     FLASH FLOOD      TEMPLE                  40.41N 75.92W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            MOUNT LAUREL ROAD CLOSED FROM FLOODING. TIME
            BASED ON DISPATCH REPORT.

0432 AM     FLASH FLOOD      2 E SOUTH HEIDELBERG TW 40.30N 76.03W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            GELSINGER ROAD AND WHEATFIELD ROAD CLOSED
            FROM FLOODING. TIME BASED ON DISPATCH
            REPORT.

0500 AM     FLASH FLOOD      1 ENE SOUTH HEIDELBERG  40.30N 76.05W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            PORTIONS OF FRITZTOWN ROAD WASHED OUT FROM
            FLASH FLOODING. TIME BASED ON DISPATCH
            REPORT.

0530 AM     FLASH FLOOD      1 W SINKING SPRING      40.33N 76.03W
08/28/2021                   BERKS              PA   FIRE DEPT/RESCUE

            FLASH FLOODING FORCED THE CLOSURE OF PARK
            AVENUE AT PENN AVENUE. TIME BASED ON
            DISPATCH REPORT.

&&

CMS/SFJ/BAH/JEO/MJG
Local storm report, Aug 28, 6:39 AM EDT, 2 hours 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
639 AM EDT SAT AUG 28 2021

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

0656 PM     TSTM WND DMG     2 SE PENN TWP           40.44N 76.05W
08/27/2021                   BERKS              PA   UTILITY COMPANY

            DOWNED TREES AND WIRES NEAR PLUM ROAD. TIME
            ESTIMATED FROM RADAR.

&&

CMS
Local storm report, Aug 28, 6:52 AM EDT, 2 hours 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
652 AM EDT SAT AUG 28 2021

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

0904 PM     TSTM WND DMG     5 SSE SANDTOWN          38.96N 75.68W
08/27/2021                   KENT               DE   UTILITY COMPANY

            DOWNED TREE ON WIRES NEAR HAYFIELD ROAD.
            TIME ESTIMATED FROM RADAR.

&&

CMS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 2:47 AM EDTAreal Flood AdvisoryPHIBerks2 hr
Aug 28, 3:06 AM EDTAreal Flood AdvisoryPHIChester, Delaware, Montgomery, Philadelphia2 hr
Aug 28, 4:06 AM EDTFlash Flood WarningPHIBerks3 hr
Aug 28, 8:07 AM EDTAreal Flood AdvisoryPHIBucks, Montgomery, Northampton3 hr
Aug 28, 11:57 AM EDTFlash Flood WarningPHIDelaware, Montgomery, Philadelphia3 hr

Nearby

Flash Flood Warnings in Pennsylvania, 2021Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.