A very warm and unstable air mass was in place over the mid-Atlantic on August 26. Despite weak shear, the high instability and subtle forcing from a surface trough allowed convection to develop during the peak heating hours.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PHI wrote it up.
A very warm and unstable air mass was in place over the mid-Atlantic on August 26. Despite weak shear, the high instability and subtle forcing from a surface trough allowed convection to develop during the peak heating hours. Storms generally lacked organization, but some cells did become strong to severe and produced locally damaging winds.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before the first event at Aug 26, 8:41 AM EST, 3 hours 42 minutes earlier.
Area Forecast Discussion
National Weather Service Mount Holly NJ
941 AM EDT Thu Aug 26 2021
.SYNOPSIS...
High pressure remains anchored off the Mid-Atlantic coast. A
cold front approaches the area on Friday and slowly works its
way through the region and remains south of the area over the
region. That front returns back north as a warm front early next
week. Another cold front approaches for the middle of next
week.
&&
.NEAR TERM /THROUGH TONIGHT/...
Earlier fog has almost entirely dissipated. So now the focus
turns to the heat and humidity and potential for convection
today. The forecast for today is somewhat challenging, as the
overall large-scale pattern is rather nebulous, with boundary-
layer processes appearing to be critical in the resultant
coverage of convection this afternoon.
The synoptic environment features a strong midlevel ridge in
the western Atlantic, elongated westward into much of the
southern U.S., with faster quasi-zonal midlevel flow confined to
the U.S./Canada border area. However, a weak midlevel vort max
was meandering in the Ohio Valley, approaching the central
Appalachians early this morning. The vortex will move little
today but will likely eject several weaker perturbations
eastward on the northern periphery of the aforementioned ridge.
Thus, the expected pattern does imply that there may be some
weak lift aloft in portions of the Mid-Atlantic today (certainly
compared to yesterday).
Several convection-allowing models develop a fair amount of
convection this afternoon in the diurnally destabilizing
environment. However, analysis of these simulations suggests
that the projected boundary-layer profiles are a little too
moist. This bias may make all the difference between an uncapped
environment and one that is sufficiently capped to prevent more
than an isolated storm or two. In comparison from the 00Z runs,
the Nam Nest has backed off a bit from coverage of storms
(though interestingly, it still appears to have a moist bias at
least looking at the surface dewpoints). The FV3 is now showing
the most coverage, while the HRRR shows only isolated coverage.
Agree with the previous shift that coverage is more likely to be
isolated to scattered; probably more coverage than seen
yesterday, but less coverage than the more aggressive models
would suggest given their expected bias. For now, think slight-
chance to low- end chance PoPs will suffice, with the highest
PoPs generally in the northern third to half of the CWA. With
weak steering flow and deep-layer shear, storms should be
disorganized and short- lived but may also be rather potent
given the sufficiently dry midlevels (though not terribly dry;
PWs still generally 1.6-1.8 inches). Cannot rule out gusty
outflow winds and a microburst or two should higher coverage of
storms occur.
Other main concern of the day is obviously the heat/humidity,
with forecast heat indices this afternoon right around the
century mark (probably a couple degrees higher, in general, than
what was observed yesterday). The dew points have mixed out a
little bit more than consensus guidance has suggested the past
couple of days, and I suspect this will occur again today. That
said, conditions will be close enough to criteria for long
enough that I am fairly confident heat-advisory conditions will
be met in Montgomery, upper Bucks, and Hunterdon Counties in
addition to those already included in the product.
Any convection should diminish quickly with the loss of daytime
heating, with another warm/humid night with patchy fog to
follow.
&&
.SHORT TERM /FRIDAY THROUGH FRIDAY NIGHT/...
High pressure will be off the Mid-Atlantic coast. Abundant low
level moisture will be in place with surface dew points in the
70s. A cold front with some mid-level shortwave energy
approaches from the west, and showers and thunderstorms develop
in the afternoon and early evening. Another hot and humid day
with highs in the lower 90s and heat index values around 100
degrees. Will go ahead and extend the current Heat Advisory
through Friday, and will expand it to include much of central
New Jersey. PWATs will be around 2-2.25 inches, so heavy rain is
possible. Given recent heavy rain, it will not take much to
produce at least localized flooding.
The stronger storms will be capable of damaging wind gusts. The
threat for convection will last through much of the overnight.
&&
.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
A prolonged period of unsettled weather is on tap for the long
term period. Although temperatures back off a bit and will top
off in the 80s, humidity levels will remain high as surface dew
points will be in the 70s well into the start of the new week.
Cold front sags south of the region on Saturday, but remains
over the Mid-Atlantic before returning back north as a warm
front early in the new week. Although mid-level ridge of high
pressure will be over the area, some shortwave energy passes
through the region and will interact with that front to touch
off mainly diurnally driven convection. over the weekend and
into the start of the new week. Main threat will be heavy rain
due to the abundant low level moisture.
Another cold front passes through the region late Monday or
Tuesday. The threat for showers and thunderstorms continues.
Highs during this time will mainly be in the upper 80s to around
90, before falling back into the lower 80s for the middle of
next week. Humidity levels finally back off a bit, but surface
dew points remain in the 60s.
Tropical low pressure may bring another round of potentially
heavy rain to the region towards the end of next week, but
models have little consistency on its timing and strength.
&&
.AVIATION /14Z THURSDAY THROUGH MONDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
This afternoon...Mainly VFR, but there is a chance of isolated
to scattered storms, especially north of PHL. For now, have
mention at ABE/TTN, but confidence is still quite low on
timing/coverage/location. Winds southwest around 5 kt, with
sea/bay breeze influence likely at ILG/ACY and possible at MIV.
Low confidence.
Tonight...Mainly VFR with patchy fog possible, which may be
somewhat more prevalent than that observed early this morning.
Winds light and variable. Moderate confidence.
Outlook...
Friday-Friday night...Patchy fog early Friday morning.
Otherwise, mainly VFR. Scattered SHRA/TSRA are possible for the
afternoon and through the overnight which could lead to
localized restrictions. Winds mostly light and variable Friday,
becoming light but steady from the northeast overnight. Moderate
confidence.
Saturday-Saturday night...Prevailing VFR, but localized
restrictions possible in SHRA/TSRA. East or northeast wind 5 to
10 kt. Moderate confidence.
Sunday-Sunday night... Prevailing VFR. Localized restrictions
possible in SHRA/TSRA, but probably with less coverage than on
Saturday. Winds shifting from northeast to southeast at 5 to 10
kt, then becoming light and variable overnight. Moderate
confidence.
Monday-Monday night... Prevailing VFR but restrictions possible
in SHRA/TSRA. Southwest wind 5 to 10 kt. Low confidence.
&&
.MARINE...
Sub-advisory conditions are expected through tonight. Winds
will generally be southwest from 5 to 15 kt with seas primarily
below 3 feet.
Outlook...
Friday-Monday... No marine headlines are anticipated. Several wind
shifts with gusts mainly 20 kt or less. Chances for showers and
thunderstorms each day. Seas ranging from 2 to 4 ft.
Rip Currents...
There is a LOW risk of rip currents through Friday.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Heat Advisory until 8 PM EDT Friday for PAZ070-071-102>106.
NJ...Heat Advisory until 8 PM EDT Friday for NJZ009-010-012>015-
017>020-026-027.
DE...Heat Advisory until 8 PM EDT Friday for DEZ001.
MD...None.
MARINE...None.
&&
Synopsis...MPS
Near Term...CMS/Johnson
Short Term...MPS
Long Term...MPS
Aviation...CMS/Johnson/MPS
Marine...CMS/MPSHazardous Weather Outlook National Weather Service Mount Holly NJ 1059 AM EDT Thu Aug 26 2021 DEZ001-271459- New Castle- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for New Castle County in Delaware. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ002-271459- Kent- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Kent County in Delaware. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ003-271459- Inland Sussex- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for inland portions of Sussex County in Delaware. .DAY ONE...Through tonight. Widespread dense fog is possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ004-271459- Delaware Beaches- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal portions of Sussex County in Delaware. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ054-271459- Carbon- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ055-271459- Monroe- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Monroe County in Pennsylvania. .DAY ONE...Through tonight. Areas of fog, some of which could be dense, are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ060-271459- Berks- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Berks County in Pennsylvania. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ061-271459- Lehigh- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ062-271459- Northampton- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ070-271459- Delaware- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Delaware County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ071-271459- Philadelphia- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Philadelphia County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ101-271459- Western Chester- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. Hot conditions could result in heat exhaustion with prolonged exposure. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. PAZ102-271459- Eastern Chester- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for eastern Chester County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ103-271459- Western Montgomery- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for western Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ104-271459- Eastern Montgomery- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for eastern Montgomery County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ105-271459- Upper Bucks- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for upper Bucks County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ106-271459- Lower Bucks- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for lower Bucks County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ001-271459- Sussex- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Sussex County in New Jersey. .DAY ONE...Through tonight. Areas of fog, some of which could be dense, are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ007-271459- Warren- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ008-271459- Morris- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ009-271459- Hunterdon- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Hunterdon County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ010-271459- Somerset- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Somerset County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ012-271459- Middlesex- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Middlesex County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ013-271459- Western Monmouth- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for western Monmouth County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ014-271459- Eastern Monmouth- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for eastern Monmouth County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ015-271459- Mercer- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Mercer County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ016-271459- Salem- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ017-271459- Gloucester- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Gloucester County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ018-271459- Camden- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Camden County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ019-271459- Northwestern Burlington- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for northwestern Burlington County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ020-271459- Ocean- 1059 AM EDT Thu Aug 26 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. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ021-271459- Cumberland- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Cumberland County in New Jersey. .DAY ONE...Through tonight. Areas of fog, some of which could be dense, are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ022-271459- Atlantic- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for inland portions of Atlantic County in New Jersey. .DAY ONE...Through tonight. Areas of fog, some of which could be dense, are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ023-271459- Cape May- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for Cape May County excluding the Atlantic coast in New Jersey. .DAY ONE...Through tonight. Areas of fog, some of which could be dense, are possible. Please go to weather.gov/phi/ehwo for more information on potential weather hazards. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. NJZ024-271459- Atlantic Coastal Cape May- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ025-271459- Coastal Atlantic- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ026-271459- Coastal Ocean- 1059 AM EDT Thu Aug 26 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. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. NJZ027-271459- Southeastern Burlington- 1059 AM EDT Thu Aug 26 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. Heat Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. MDZ012-271459- Kent MD- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. 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. MDZ015-271459- Queen Annes- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. 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. MDZ019-271459- Talbot- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. 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. MDZ020-271459- Caroline- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ430-271459- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ431-271459- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 1059 AM EDT Thu Aug 26 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...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ450-271459- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Monmouth County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ451-271459- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Ocean County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ452-271459- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Atlantic County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ453-271459- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Cape May County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ454-271459- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to the mouth of Delaware Bay out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. ANZ455-271459- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 1059 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Sussex County out 20 nm. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
The Binghamton radar (KBGM), 129 km away, was scanning. The volume nearest the first event began at 17:21 UTC.
5 thunderstorm wind. Local standard time, as filed.
Trees were downed in Barrett Twp including on Grable Rd and Playhouse Rd. Time estimated from radar.
A tree was downed into a house resulting in structural damage on Prospect St. This was due to thunderstorm outflow winds. Time estimated from radar and dispatch report.
Trees and wires were downed near Tanglewood Dr. Time estimated from radar.
Trees and wires were downed near Lake Dr. Time estimated from radar.
A couple of trees were downed in Franklin Twp. Time estimated from radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2021Every state in 2021This day in weather historyWarnings in Pennsylvania, August 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 972160, 972162, 972165, 972163, 972161.