Alert archive / Pennsylvania / Areal Flood Advisories in 2021
Areal Flood Advisory 106, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood advisory at Aug 9, 2021, 6:29 PM EDT for Berks County, Montgomery County, Pennsylvania. It was in force for 70 min.
The area
The outline as issued.
The facts
- Issued
- Aug 9, 2021, 6:29 PM EDT (22:29 UTC)
- Expired
- Aug 9, 2021, 7:39 PM EDT
- In force
- 70 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Berks County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 102 km from the middle of the area, began a volume at 22:31 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, 10.5 hours before the alert went out and 211 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.
- Mixed-layer CAPE
- 568 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 916 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
524
WGUS81 KPHI 092229
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
629 PM EDT Mon Aug 9 2021
PAC011-091-100130-
/O.NEW.KPHI.FA.Y.0106.210809T2229Z-210810T0130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Montgomery PA-
629 PM EDT Mon Aug 9 2021
The National Weather Service in Mount Holly has issued a
* Flood Advisory for...
East Central Berks County in eastern Pennsylvania...
West Central Montgomery County in southeastern Pennsylvania...
* Until 930 PM EDT.
* At 629 PM EDT, Doppler radar indicated heavy rain due to
thunderstorms. Over 1 inch of rain has fallen. Minor flooding is
ongoing or expected to begin shortly in the advisory area.
* Some locations that will experience flooding include...
Pottstown, Phoenixville, Collegeville, Royersford, Trappe,
Schwenksville, Bechtelsville, Gilbertsville, Spring Mount, Stowe,
Boyertown, and Sanatoga.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4029 7571 4038 7562 4026 7543 4016 7544
4014 7549 4015 7550 4016 7550 4016 7551
4018 7554 4021 7556 4020 7556 4020 7558
4024 7560 4024 7561 4022 7561
$$
Robertson1 follow-up statement
733
WGUS81 KPHI 092339
FLSPHI
Flood Advisory
National Weather Service Mount Holly NJ
739 PM EDT Mon Aug 9 2021
PAC011-091-092349-
/O.CAN.KPHI.FA.Y.0106.000000T0000Z-210810T0130Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Berks PA-Montgomery PA-
739 PM EDT Mon Aug 9 2021
...FLOOD ADVISORY IS CANCELLED FOR EAST CENTRAL BERKS AND WEST
CENTRAL MONTGOMERY COUNTIES...
The heavy rain has ended and flood waters are recededing. Flooding
is no longer expected to pose a threat. Please continue to heed
remaining road closures.
LAT...LON 4029 7571 4038 7562 4026 7543 4016 7544
4014 7549 4015 7550 4016 7550 4016 7551
4018 7554 4021 7556 4020 7556 4020 7558
4024 7560 4024 7561 4022 7561
$$
RobertsonWhat 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 Aug 9, 5:29 PM EDT, 1 hour earlier.
Area forecast discussion, Aug 9, 5:29 PM EDT, 1 hour before
Area Forecast Discussion
National Weather Service Mount Holly NJ
529 PM EDT Mon Aug 9 2021
.SYNOPSIS...
A lee side trough will develop to the west of the Mid Atlantic
region Tuesday, before shifting eastward Wednesday through
Friday. A cold front is forecast to move across the east coast
Friday night into Saturday. High pressure build across the
northeast states late in the weekend into early next week.
&&
.NEAR TERM /THROUGH TUESDAY/...
5:30 PM...
Sent out a quick update to PoPs to get them closer to matching
tstm coverage over the area early this evening. Definitely
greater than expected coverage and intensity of convection over
Delmarva, far southeast PA, and southern New Jersey this
afternoon. Some additional development is possible in areas
further north into this evening, but the severe and flash flood
potentials should be minimal from here. Previous discussion
follows...
A weakening area of low pressure located off the northern NJ
coast will continue to meander NEwrd away from the area through
Tuesday morning. At mid-lvls the attendant closed low will also
pull away from the area this afternoon, with shortwave ridging
briefly moving over the area tonight (although some weak
convectively-enhanced shortwaves may be embedded in it).
Scattered diurnal convection will continue to develop this
afternoon, with some limited forcing resulting from low-lvl
convergence on the backside of the departing low. Although
instability is fairly high (MLCAPE values in excess of 2000 J/kg
over Delmarva), very weak flow aloft and gradually decreasing
mid-lvl lapse rates should preclude any severe threat. Given
Corfidi vector magnitudes of only around 10kts and increasing
PWATs/warm cloud depths there could be some localized hydro
concerns if any storms were to train along prone areas... but
given the anticipated limited storm coverage this threat is very
conditional.
Overnight there will be the potential for another round of
mostly showers (with maybe a few rumbles) as a weak convergence
zone sets up near the center of our area in association with a
primarily W-E oriented sfc.trough. Lift may also be somewhat
enhanced by some very low-amplitude perturbations passing into
the mid-lvl ridge axis. Given that the overall forcing is
subtle, and mid-lvl heights will actually be rising, am not as
bullish on POP/QPF as consensus guidance, and feel that Chc PoPs
near the wind shift line are adequate. Additionally we may see
some stratus form over the northern half of our area late
tonight into Tuesday morning, with this stratus possibly
pivoting a little southward by Tuesday AM. Fog should largely be
limited to areas sufficiently north of the boundary i.e. the
Poconos and associated valleys.
Tuesday will feature a more typical summertime setup with
warm/moist southerly flow prevailing over the area, between the
Bermuda High and the a low passing over the Great Lakes. Highs
should reach around 90, and with dewpoints in the low-mid 70s we
may approach heat advisory criteria in the urban corridor (heat
indices approaching 100 degrees). That being said, it looks
fairly borderline at this time and with more substantial heat
concerns looking likely later in the week, held off with any
products at this time. The storm threat looks to hold off until
late in the afternoon (and mostly focused over the west), as the
main forcing will be associated with the prefrontal trough well
to our west and it remains to be seen if the activity will make
it to our area prior to the loss of daytime heating.
&&
.SHORT TERM /TUESDAY NIGHT THROUGH WEDNESDAY NIGHT/...
The lee-side trough that develops to our west during the day
Tuesday is forecast to shift eastward overnight into Wednesday
and Wednesday night, while high pressure remains offshore of the
Atlantic coast. Meanwhile, ridging aloft remains offshore of
the Carolinas as well. This will lead to increased thickness
values during this period. Hot and humid conditions continue to
be forecast, and many areas will likely seeing advisory, even
warning level criteria. We have issued an Excessive Heat Watch
starting Wednesday for portions of the area that have warning
criteria of 105 degrees heat index. A couple of short
wave/vorticity impulses are forecast to move across the area
Tuesday night, Wednesday, and Wednesday night, which could lead
to scattered showers and thunderstorms. Due to lack of winds and
shear, widespread severe threat is not expected, but gusty
winds and heavy rain can be expected with any shower or
thunderstorms.
&&
.LONG TERM /THURSDAY THROUGH MONDAY/...
Hot and humid conditions continue to be forecast for the
beginning of the long term through Thursday and Friday, before a
cooling tend begins over the weekend into early next week.
On Thursday and Friday, the lee-side/thermal trough remains in
place across the Mid-Atlantic region, while high pressure
remains offshore and ridging aloft remains near the Carolina
coasts. This will keep elevated thicknesses across the area,
leading to very hot and humid conditions through at least
Thursday and likely into Friday. We continue to expect near
warning level heat index values for portions of the area, so the
Excessive Heat Watch will continue through Thursday and Friday.
For those areas not within the watch, they will likely need a
Heat Advisory as we get closer to the event.
With the proximity of the surface trough, combined with
instability and multiple short wave/vorticity impulses, there
will continue to be a chance of showers and thunderstorms
through the end of the week. Due to lack of winds and shear,
widespread severe threat is not expected, but gusty winds and
heavy rain can be expected with any showers or thunderstorms.
By Saturday, a cold front is forecast to move through the area.
There is some uncertainty as to the exact timing of the front
which could be as early as Friday night, or as late as Saturday
night. However, once the front comes through, cooler
temperatures will move in behind the boundary for the later part
of the weekend into early next week.
&&
.AVIATION /22Z MONDAY THROUGH SATURDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Rest of the afternoon... Mostly VFR although a few showers and
storms may bring temporary restrictions to some of the
terminals, but confidence in timing/locations is too low to
include in the TAFs at this time. Winds either light southerly
or light and variable. Moderate confidence.
Tonight... Some temporarily restrictions possible in showers
after midnight, and then some additional restrictions in stratus
(mostly KPHL and northward) into Tuesday morning. Winds largely
light and variable. Low confidence in southward extent of
stratus and also how low Cigs get.
Tuesday... Generally VFR once AM stratus clears, some storms
possible late in the afternoon at KRDG/KABE. S-SW winds around
10kts. Moderate confidence.
Outlook...
Wednesday through Friday night...Mostly VFR. Chance of
scattered showers and thunderstorms which may temporarily lead
to lower conditions. Southwesterly to west winds 5-10 knots
during the day, becoming light and variable at night. High
confidence on the overall pattern, lower confidence of timing of
showers and thunderstorms and potential for lower conditions.
Saturday...Mostly VFR. Chance of scattered showers and
thunderstorms which may temporarily lead to lower conditions.
Winds become west to northwest 5-10 knots.
&&
.MARINE...
Sub-SCA conditions are expected through Tuesday with seas only
2-3ft and generally southerly winds gusting 15-20kts. A few
thunderstorms will be possible on the waters (particularly
Delaware Bay) this afternoon
Outlook...
Wednesday through Friday...Conditions are expected to remain
below Small Craft Advisory levels through the period, although
winds will gust around 20 knots at times and seas will remain
around 3-40 feet.
Rip Currents...
There is a low risk of rip currents through Tuesday.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Excessive Heat Watch from Wednesday afternoon through Friday
evening for PAZ070-071-101>106.
NJ...Excessive Heat Watch from Wednesday afternoon through Friday
evening for NJZ008>010-012-013-015-017>020-027.
DE...Excessive Heat Watch from Wednesday afternoon through Friday
evening for DEZ001.
MD...None.
MARINE...None.
&&
Synopsis...Robertson
Near Term...Carr/O'Brien
Short Term...Staarmann
Long Term...Robertson
Aviation...Carr/Robertson
Marine...Carr/RobertsonHazardous weather outlook, Aug 9, 5:02 PM EDT, 1 hour 27 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 0502 PM EDT Mon Aug 09 2021 DEZ001-102102- New Castle- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. 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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. DEZ004-102102- Delaware Beaches- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ054-102102- Carbon- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. 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There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. PAZ061-102102- Lehigh- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Lehigh County in Pennsylvania. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. PAZ062-102102- Northampton- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Northampton County in Pennsylvania. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. PAZ070-102102- Delaware- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure on Friday. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .SPOTTER INFORMATION STATEMENT... 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PAZ101-102102- Western Chester- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. PAZ102-102102- Eastern Chester- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for eastern Chester County in Pennsylvania. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. PAZ103-102102- Western Montgomery- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for western Montgomery County in Pennsylvania. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. PAZ104-102102- Eastern Montgomery- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for eastern Montgomery County in Pennsylvania. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. PAZ105-102102- Upper Bucks- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for upper Bucks County in Pennsylvania. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. PAZ106-102102- Lower Bucks- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for lower Bucks County in Pennsylvania. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure 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. NJZ001-102102- Sussex- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Sussex County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ007-102102- Warren- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Warren County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. NJZ008-102102- Morris- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Morris County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. NJZ009-102102- Hunterdon- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Hunterdon County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. NJZ010-102102- Somerset- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Somerset County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure 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. NJZ012-102102- Middlesex- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Middlesex County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Friday. Hot conditions could result in heat exhaustion with prolonged exposure on Saturday. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ013-102102- Western Monmouth- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for western Monmouth County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. NJZ014-102102- Eastern Monmouth- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for eastern Monmouth County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. NJZ015-102102- Mercer- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Mercer County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure 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. NJZ016-102102- Salem- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Salem County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. 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. NJZ017-102102- Gloucester- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Gloucester County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure on Friday. Hot conditions could result in heat exhaustion with prolonged exposure on Saturday. 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. NJZ018-102102- Camden- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Camden County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. NJZ019-102102- Northwestern Burlington- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for northwestern Burlington County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure 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. NJZ020-102102- Ocean- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for inland portions of Ocean County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Dangerously hot conditions could result in heat exhaustion or heat stroke with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. NJZ021-102102- Cumberland- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Cumberland County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. 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. NJZ022-102102- Atlantic- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ023-102102- Cape May- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Cape May County excluding the Atlantic coast in New Jersey. .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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ024-102102- Atlantic Coastal Cape May- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for the Atlantic coastal portions of Cape May County in New Jersey. .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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ025-102102- Coastal Atlantic- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ026-102102- Coastal Ocean- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for coastal portions of Ocean County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. NJZ027-102102- Southeastern Burlington- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for southeastern Burlington County in New Jersey. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. Hot conditions could result in heat exhaustion with prolonged exposure 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. MDZ012-102102- Kent MD- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Kent County in Maryland. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. 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. MDZ015-102102- Queen Annes- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Queen Annes County in Maryland. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. 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. MDZ019-102102- Talbot- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Talbot County in Maryland. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. 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. MDZ020-102102- Caroline- 0502 PM EDT Mon Aug 09 2021 This Hazardous Weather Outlook is for Caroline County in Maryland. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hot conditions could result in heat exhaustion with prolonged exposure on Wednesday. Hot conditions could result in heat exhaustion with prolonged exposure on Thursday. 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. ANZ430-102102- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ431-102102- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ450-102102- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ451-102102- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ452-102102- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ453-102102- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ454-102102- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ455-102102- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 0502 PM EDT Mon Aug 09 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...Tuesday through Sunday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
In the hours before
Local storm report, Aug 9, 4:29 PM EDT, 2 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
429 PM EDT MON AUG 9 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0240 PM TSTM WND DMG HARRINGTON 38.92N 75.58W
08/09/2021 KENT DE PUBLIC
TREES AND LARGE BRANCHES BLOWN DOWN. TIME
ESTIMATED FROM RADAR.
&&
SFJLocal storm report, Aug 9, 4:37 PM EDT, 1 hour 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
437 PM EDT MON AUG 9 2021
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 PM FLASH FLOOD HARRINGTON 38.93N 75.57W
08/09/2021 KENT DE FIRE DEPT/RESCUE
A WATER RESCUE OCCURRED ON LIBERTY ST, PRIOR
TO IT BEING CLOSED DUE TO FLASH FLOODING.
&&
JEOSpecial weather statement, Aug 9, 4:45 PM EDT, 1 hour 44 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
445 PM EDT Mon Aug 9 2021
NJZ017-021-022-092115-
Cumberland NJ-Atlantic NJ-Gloucester NJ-
445 PM EDT Mon Aug 9 2021
...A strong thunderstorm will impact portions of southwestern
Atlantic, northeastern Cumberland and southeastern Gloucester
Counties through 515 PM EDT...
At 445 PM EDT, Doppler radar was tracking a strong thunderstorm over
Buena, or near Vineland, moving east at 5 mph.
HAZARD...Winds in excess of 40 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Vineland, Millville, Cumberland, Buena, Estell Manor, Newfield,
Dorothy, Mizpah, Folsom and Collings Lakes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3936 7498 3952 7506 3962 7490 3961 7488
3962 7486 3941 7473
TIME...MOT...LOC 2045Z 248DEG 5KT 3949 7494
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH
SFJSpecial weather statement, Aug 9, 5:34 PM EDT, 55 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
534 PM EDT Mon Aug 9 2021
NJZ017>019-PAZ071-092200-
Northwestern Burlington NJ-Camden NJ-Gloucester NJ-Philadelphia PA-
534 PM EDT Mon Aug 9 2021
...A strong thunderstorm will impact portions of northwestern Camden,
north central Gloucester and southwestern Philadelphia Counties
through 600 PM EDT...
At 534 PM EDT, Doppler radar was tracking a strong thunderstorm over
Ben Franklin Bridge, or over Camden. This storm was nearly
stationary.
HAZARD...Winds in excess of 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Philadelphia, Camden, Gloucester City, Cherry Hill, Deptford,
Bellmawr, Yeadon, Woodbury, Palmyra, Magnolia, Westville, Woodbury
Heights, National Park, Brooklawn, Audubon Park, Ramblewood,
Barclay-Kingston, Center City, Cherry Hill Mall and South
Philadelphia.
This includes the following highways...
New Jersey Turnpike between exits 3 and 4.
Interstate 95 in Pennsylvania between mile markers 15 and 27.
Interstate 76 in Pennsylvania between mile markers 341 and 351.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 295 in New Jersey between mile markers 22 and 37.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 676 in New Jersey between mile markers 0 and 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3990 7490 3980 7515 3993 7524 3994 7524
3995 7525 3996 7525 3997 7527 4004 7510
TIME...MOT...LOC 2134Z 333DEG 4KT 3996 7513
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
SFJSpecial weather statement, Aug 9, 6:10 PM EDT, 19 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
610 PM EDT Mon Aug 9 2021
NJZ018-019-027-PAZ071-104-106-092245-
Northwestern Burlington NJ-Camden NJ-Southeastern Burlington NJ-
Lower Bucks PA-Eastern Montgomery PA-Philadelphia PA-
610 PM EDT Mon Aug 9 2021
...Strong thunderstorms will impact portions of central Camden,
northern Burlington, southeastern Montgomery, south central Bucks and
central Philadelphia Counties through 645 PM EDT...
At 610 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Wissinoming to near Evesham. Movement was
northeast at 10 mph.
HAZARD...Winds in excess of 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Philadelphia, Camden, Cherry Hill, Bensalem, Evesham, Mount Laurel,
Willingboro, Voorhees, Medford, Lumberton, Burlington, Mount Holly,
Riverside, Palmyra, Tabernacle, Jenkintown, Beverly, Rockledge,
Abington and Bryn Athyn.
This includes the following highways...
New Jersey Turnpike between exits 4 and 5.
Pennsylvania Turnpike between mile markers 345 and 352.
Interstate 95 in Pennsylvania between mile markers 22 and 38.
Interstate 76 in Pennsylvania between mile markers 339 and 341.
Interstate 295 in New Jersey between mile markers 32 and 47.
Interstate 676 in New Jersey between mile markers 3 and 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4020 7505 3985 7454 3976 7485 4001 7523
TIME...MOT...LOC 2210Z 236DEG 11KT 4001 7509 3985 7485
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
SFJSpecial weather statement, Aug 9, 6:24 PM EDT, 5 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
624 PM EDT Mon Aug 9 2021
PAZ061-092300-
Lehigh PA-
624 PM EDT Mon Aug 9 2021
...A strong thunderstorm will impact portions of central Lehigh
County through 700 PM EDT...
At 624 PM EDT, Doppler radar was tracking a strong thunderstorm over
Claussville, or near Allentown. This storm was nearly stationary.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Allentown, Bethlehem, Emmaus, Northampton, Neffs, Coffeetown, Ancient
Oaks, Schnecksville, Claussville, Catasauqua, Coplay, Macungie, North
Catasauqua, Alburtis, Fullerton and Hokendauqua.
This includes the following highways...
Northeast Extension between mile markers 52 and 64.
Interstate 78 in Pennsylvania between mile markers 45 and 60.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4072 7558 4069 7550 4066 7548 4067 7545
4064 7540 4063 7539 4062 7539 4047 7556
4059 7575
TIME...MOT...LOC 2224Z 314DEG 1KT 4061 7560
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 3:43 PM EDT | Excessive Heat Watch | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 12 hr |
| Aug 9, 4:36 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 104 min |
| Aug 9, 5:12 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 85 min |
| Aug 9, 5:34 PM EDT | Special Weather Statement | PHI | Philadelphia | 26 min |
| Aug 9, 5:40 PM EDT | Areal Flood Advisory | PHI | Philadelphia | 82 min |
| Aug 9, 6:10 PM EDT | Special Weather Statement | PHI | Philadelphia | 35 min |
| Aug 9, 6:24 PM EDT | Special Weather Statement | PHI | Lehigh | 36 min |
| Aug 9, 6:49 PM EDT | Special Weather Statement | PHI | Montgomery | 26 min |
| Aug 9, 7:14 PM EDT | Special Weather Statement | PHI | Carbon | 31 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.