Weakening low pressure tracking out of the Mississippi Valley passed west of the mid-Atlantic on January 26. Secondary low pressure developed near the Delmarva region late on the 26th, tracking east-northeastward and passing south of New England.
Every event with a place to put it; 11 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
Weakening low pressure tracking out of the Mississippi Valley passed west of the mid-Atlantic on January 26. Secondary low pressure developed near the Delmarva region late on the 26th, tracking east-northeastward and passing south of New England. Upper level ridging prevented much intensification of this secondary low, which combined with the decaying primary low to bring a poorly organized weather system to the mid-Atlantic. A light wintry mix of precipitation fell, including a mix of snow and freezing rain.
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 Jan 26, 6:35 AM EST, 1 hour 10 minutes earlier.
Area Forecast Discussion
National Weather Service Mount Holly NJ
635 AM EST Tue Jan 26 2021
.SYNOPSIS...
Weakening low pressure will move into the Northeast and Mid-
Atlantic regions later today before moving offshore tonight. Low
pressure develops near the Carolinas later Wednesday and
rapidly intensifies as it tracks out to sea through Thursday.
High pressure builds into our region Friday night and Saturday,
then a storm system is forecast to arrive later Sunday and
Monday.
&&
.NEAR TERM /THROUGH TONIGHT/...
A mid level short wave trough was located over Iowa and
vicinity early this morning. The feature will progress to the
east passing over the Great Lakes and moving toward northern New
England late tonight. Weakening surface low pressure is
forecast to move from Ohio early this morning to western New
York tonight. A secondary surface low is expected to slide off
the Virginia coast today.
The latest observational and model trends regarding the
precipitation are suggesting that little will fall in our region
early this morning. The dry air in place should continue to
prevent any light precipitation that develops overhead from
reaching the ground in most spots.
The precipitation moving across southern Virginia early this
morning will likely remain to our south. We will need to wait
for the precipitation in the upper Ohio River Valley to reach us
during the mid to late morning. It is expected to blossom a bit
as it approaches in the developing isentropic lift. Our best
chance for precipitation is from late this morning into this
evening. Lingering light precipitation is anticipated for
tonight and it should come to an end gradually from southwest to
northeast.
We have not made a great deal of change to the precipitation
type forecast. However, with the later arrival of the
precipitation, the potential for a light ice accumulation has
diminished in southern New Jersey, and in the city of
Philadelphia. We will remove Philadelphia, and the New Jersey
counties of Salem, Gloucester, Camden, Burlington and Middlesex
from the Winter Weather Advisory.
We have made only modest adjustments to our ice forecast at
this point. The expected mid level drying may be a bit slower
than previously thought, so the snow may persist a little longer
in the Poconos and in far northern New Jersey. We have
increased snow totals there with some locations in the higher
terrain expected to receive 2 to 3 inches of snow.
&&
.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
It gets milder for Wednesday then much colder air begins to
overspread our area for Thursday.
A very active flow regime continues with a closed low
traversing southern Canada Wednesday into Thursday. Meanwhile,
southern stream energy sliding across the Ohio Valley region
Wednesday shifts due eastward and emerges off the Mid-Atlantic
coast Wednesday night into early Thursday. A closed low in the
vicinity of the Canadian Maritimes along with the southern
stream energy not phasing with the northern stream results in a
surface low well to our south tracking right out to sea. Given
the blocking Canadian Maritimes closed low and a lack of
phasing, the surface low cannot turn up the coast. As a result,
the precipitation shield is forecast to pretty much bypass our
region to the south and east Wednesday night into Thursday. We
still cannot rule out some northern edge light snow reaching
into our far southern zones, therefore kept some 20-30 PoPs in
for now.
Prior to the above, a weak low off the southern New England
coast may pivot southward with a weak surface trough extending
northwestward from it and near our northern and eastern zones
for a time Wednesday. Some guidance wants to produce a little
light snow/rain shower activity with this along the coast, but
overall it looks disorganized and therefore held off on adding a
mention for this. However, there could be a little light snow
or freezing drizzle across the far northern areas early
Wednesday with lingering low-level moisture as the weak system
aloft translates offshore. Otherwise, clouds should break for
some sunshine Wednesday.
As an ocean storm rapidly intensifies Wednesday night and
Thursday, strong high pressure will be building into the Ohio
Valley. This places our region within a tight pressure gradient.
The combination of strengthening cold air advection will result
in efficient mixing especially later Wednesday night and
particularly on Thursday. The forecast soundings continue to
show winds mixing down to the surface to be about 30 knots,
therefore increased the wind and wind gusts especially for
Thursday. Temperatures on Thursday should only rise into the 30s
across the area (upper 20s in the higher elevations), and with
gusty winds the wind chill values will be in the 20s and teens
(single digits in the higher elevations). The winds should
settle some Thursday night, however a lingering breeze will
drive wind chill values down into the single digits across the
area (below zero in the higher elevations).
&&
.LONG TERM /FRIDAY THROUGH MONDAY/...
Summary...Potent ocean storm results in very cold and windy
conditions Friday into Saturday, then a storm system Sunday into
Monday may bring a wintry mix.
Synoptic Overview...An active flow regime with a robust
northern stream closed low traversing the Northeast Friday, then
this system gradually lifts out Saturday and Saturday night. An
amplifying upper- level trough in the Plains and Midwest Sunday
shifts eastward and may close off as it nears the upper Ohio
Valley Sunday night. Meanwhile, a ridge in front of this trough
results in strong high pressure across portions of eastern
Canada. The entire trough slides eastward and moves across the
East Coast early next week, with surface low pressure tracking
up the Ohio Valley then a secondary low developing over the
Carolinas which tracks northeastward Sunday through Monday.
For Friday and Saturday...The Canadian closed low is forecast
to dive across the Northeast Friday with robust cold air
advection occurring. This will also maintain a tight pressure
gradient and efficient mixing within a strong wind field. As a
result, Friday will be very cold with a gusty wind and very
drier air as dew points will be in the teens and single digits.
The entire area should struggle to get above freezing Friday.
There should be some lake effect activity which may try to reach
into the Poconos, however the flow may become more northerly
and therefore limit this activity to much closer to the eastern
Great Lakes. The winds then subside Friday night and Saturday as
high pressure slides across our area and gradually weakens. The
cold air advection weakens Friday night and Saturday, with some
improvement in the temperature department Saturday but still on
the cold side. The next in a series of systems then slides
across the U.S. through Saturday night approaching our area near
daybreak Sunday. Cold and dry high pressure still sitting over
our area should tend to hold back the incoming warm air
advection driven precipitation.
For Sunday and Monday...An amplifying upper-level trough which
may end up closing off shifts east from the Midwest to Ohio
Valley. This feature will drive surface low pressure up the Ohio
Valley, however strong short wave energy rotating through the
base of the trough along with strong high pressure wedging
southward east of the Appalachians results in a secondary
surface low development in the Carolinas. The evolution of these
features will be key to our sensible weather, especially given
a cold and dry air mass gradually departing over our area. In
addition, surface high pressure wedging southward from eastern
Canada if strong enough may keep colder air locked in longer as
precipitation overruns it. The track of the surface low will
also determine how much low-level warming can occur. As of now,
the signals in the model guidance suggests a snow to a wintry
mix across much of the region to even some rain across portions
of the area. The timing and other details are far less certain,
therefore kept PoPs in the chance range with a general rain/snow
mention.
&&
.AVIATION /12Z TUESDAY THROUGH SATURDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Today...VFR/MVFR ceilings early this morning. Conditions then
lowering to IFR in the mid to late morning with the arrival of
precipitation from the west and southwest. The precipitation
should be all rain at KMIV and KACY. A wintry mix in the morning
should change to rain at KILG, KPHL, KPNE and KTTN for the
afternoon. Snow and sleet is forecast to change to freezing rain
this afternoon at KRDG and KABE. Easterly wind 5 to 10 knots.
Medium confidence in the overall trend with low confidence in
the exact timing of the precipitation type changes.
Tonight...IFR conditions in light rain and drizzle. Some light
freezing rain and freezing drizzle are expected around KABE.
Variable wind less than 10 knots, becoming west. Medium
confidence.
Outlook...
Wednesday...VFR ceilings may scatter out at times during the
day, then a storm passing well to our south at night may still
keep some clouds across the area especially from about PHL south
and east. Northwesterly winds around 10 knots, increasing some
at night and potentially becoming gusty. Moderate confidence.
Thursday and Friday...VFR. Northwesterly winds 15-25 knots with
gusts 30-35 knots. The winds should diminish some each night,
especially Friday night. Moderate confidence.
Saturday...VFR. Northwest winds 10-15 knots. Moderate
confidence.
&&
.MARINE...
An east wind 10 to 20 knots is expected for today. The wind is
forecast to shift around to the northwest late tonight at 10 to
15 knots. Wave heights on our ocean waters are anticipated to
build to 3 to 4 feet.
Outlook...
Wednesday...The conditions should be below Small Craft Advisory
during the day Wednesday, then north to northwest winds
increase rapidly Wednesday night and approach gale force toward
daybreak Thursday.
Thursday and Friday...North to northwest gales probable with
rough seas. Winds should drop below gale force Friday night.
Freezing spray possible especially each night.
Saturday...The conditions should drop below Small Craft
Advisory criteria. Freezing spray possible early.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Winter Weather Advisory until 4 AM EST Wednesday for PAZ055.
Winter Weather Advisory until 4 AM EST Wednesday for PAZ054-
060>062-101-103-105.
Winter Weather Advisory until 1 PM EST this afternoon for
PAZ070-102-104-106.
NJ...Winter Weather Advisory until 4 AM EST Wednesday for NJZ001-
007-008.
Winter Weather Advisory until 4 AM EST Wednesday for NJZ009-
010.
Winter Weather Advisory until 1 PM EST this afternoon for
NJZ015.
DE...Winter Weather Advisory until 10 AM EST this morning for
DEZ001.
MD...Winter Weather Advisory until 10 AM EST this morning for
MDZ012.
MARINE...None.
&&
Synopsis...Gorse
Near Term...Iovino
Short Term...Gorse
Long Term...Gorse
Aviation...Gorse/Iovino
Marine...Gorse/IovinoHazardous Weather Outlook National Weather Service Mount Holly NJ 0610 AM EST Tue Jan 26 2021 DEZ001-271110- New Castle- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. DEZ002-271110- Kent- 0610 AM EST Tue Jan 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...Wednesday through Monday. 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. DEZ003-271110- Inland Sussex- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. DEZ004-271110- Delaware Beaches- 0610 AM EST Tue Jan 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...Wednesday through 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. PAZ054-271110- Carbon- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Carbon County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ055-271110- Monroe- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Monroe County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through 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. PAZ060-271110- Berks- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Berks County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ061-271110- Lehigh- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Lehigh County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ062-271110- Northampton- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Northampton County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ070-271110- Delaware- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ071-271110- Philadelphia- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Philadelphia County in Pennsylvania. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. PAZ101-271110- Western Chester- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for western Chester County in Pennsylvania. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ102-271110- Eastern Chester- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ103-271110- Western Montgomery- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ104-271110- Eastern Montgomery- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ105-271110- Upper Bucks- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. PAZ106-271110- Lower Bucks- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ001-271110- Sussex- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Sussex County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ007-271110- Warren- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Warren County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ008-271110- Morris- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Morris County in New Jersey. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ009-271110- Hunterdon- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ010-271110- Somerset- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ012-271110- Middlesex- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. NJZ013-271110- Western Monmouth- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. NJZ014-271110- Eastern Monmouth- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. NJZ015-271110- Mercer- 0610 AM EST Tue Jan 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. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ016-271110- Salem- 0610 AM EST Tue Jan 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...Wednesday through Monday. 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. NJZ017-271110- Gloucester- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. NJZ018-271110- Camden- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. NJZ019-271110- Northwestern Burlington- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. NJZ020-271110- Ocean- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for inland portions of Ocean County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ021-271110- Cumberland- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Cumberland County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ022-271110- Atlantic- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. NJZ023-271110- Cape May- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. NJZ024-271110- Atlantic Coastal Cape May- 0610 AM EST Tue Jan 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...Wednesday through Monday. 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. NJZ025-271110- Coastal Atlantic- 0610 AM EST Tue Jan 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...Wednesday through Monday. 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. NJZ026-271110- Coastal Ocean- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for coastal portions of Ocean County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. NJZ027-271110- Southeastern Burlington- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for southeastern Burlington County in New Jersey. .DAY ONE...Through tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. MDZ012-271110- Kent MD- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for Kent County in Maryland. .DAY ONE...Through tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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. MDZ015-271110- Queen Annes- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. MDZ019-271110- Talbot- 0610 AM EST Tue Jan 26 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...Wednesday through Monday. 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. MDZ020-271110- Caroline- 0610 AM EST Tue Jan 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...Wednesday through Monday. 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. ANZ430-271110- Delaware Bay waters north of East Point NJ to Slaughter Beach DE- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for upper Delaware Bay. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Wednesday through 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. ANZ431-271110- Delaware Bay waters south of East Point NJ to Slaughter Beach DE- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for lower Delaware Bay. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Wednesday through 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. ANZ450-271110- Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Monmouth County out 20 nm. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Wednesday through 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. ANZ451-271110- Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Ocean County out 20 nm. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Wednesday through 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. ANZ452-271110- Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Atlantic County out 20 nm. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Wednesday through 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. ANZ453-271110- Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Cape May County out 20 nm. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Wednesday through 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. ANZ454-271110- Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm- 0610 AM EST Tue Jan 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. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Wednesday through 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. ANZ455-271110- Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm- 0610 AM EST Tue Jan 26 2021 This Hazardous Weather Outlook is for the Atlantic coastal waters adjacent to Sussex County out 20 nm. .DAY ONE...Through tonight. There is a low probability of widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Wednesday through 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.
The national radar mosaic for the moment the first event began.
11 winter weather. Local standard time, as filed.
Light freezing rain fell. A trained spotter in East Nantmeal Twp reported 0.10 inches of ice accretion.
Light snow and freezing rain fell, including an observed ice accretion of 0.04 inches at Reading Regional Airport (KRDG).
Light freezing rain fell. An ice accretion of 0.05 inches was measured at Pottstown Limerick Airport (KPTW).
Surrounding observations, including from the KDYL and KPTW ASOS sites, suggest some light ice accretion of a few hundredths of an inch likely occurred.
Spotter and ASOS observations from surrounding locations suggest areas of light freezing rain occurred, likely producing a few hundredths of an inch of ice accretion.
Light snow fell according to CoCoRaHS observations in Jim Thorpe, and observations from surrounding areas suggest scattered to widespread ice accretion of 0.01 to 0.10 inches likely occurred.
A mix of snow and freezing rain fell. The Lehigh Valley International Airport ASOS (KABE) measured 0.20 inches of ice accretion.
Light freezing rain fell. The Doylestown Airport ASOS (KDYL) measured 0.08 inches of ice accretion.
An ice accretion of 0.08 inches was measured at Doylestown in Lower Bucks County, and it is assumed similar totals occurred in Upper Bucks.
Light snow and freezing rain fell. The Mount Pocono ASOS (KMPO) measured 0.09 inches of ice accretion, with nearby snowfall totals of an inch or less.
Light snow and freezing rain fell. Snowfall of 0.5 inches was reported in Bangor, and observations from surrounding areas suggest patchy icing of a few hundredths of an inch likely occurred.
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, January 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: 930495, 930490, 930493, 930494, 930496, 930485, 930488, 930491, 930492, 930484, 930486.