Alert archive / Pennsylvania / Winter Weather Advisories in 2018

Winter Weather Advisory 18, NWS Philadelphia/Mount Holly

April 16, 2018Sussex County, New Jersey; Carbon County, Monroe County, Pennsylvania

NWS Philadelphia/Mount Holly issued this winter weather advisory at Apr 16, 2018, 12:32 AM EDT for Sussex County, New Jersey; Carbon County, Monroe County, Pennsylvania. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Apr 16, 2018, 12:32 AM EDT (04:32 UTC)
Expired
Apr 16, 2018, 9:00 AM EDT
In force
8 hr
Issued by
NWS Philadelphia/Mount Holly

Counties Sussex County, NJ, Carbon County, PA, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 140 km from the middle of the area, began a volume at 04:32 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

Brookhaven, NY (KOKX), launched 00:00Z, 4.5 hours before the alert went out and 201 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2018-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2018-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 521 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
448 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
521 m²/s²
0-3 km storm-relative helicity
714 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

353 
WWUS41 KPHI 160432
WSWPHI

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mount Holly NJ
1232 AM EDT Mon Apr 16 2018



NJZ001-PAZ054-055-160800-
/O.NEW.KPHI.WW.Y.0018.180416T0432Z-180416T0800Z/
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
1232 AM EDT Mon Apr 16 2018

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 AM EDT EARLY THIS
MORNING...

* WHAT...Freezing rain. Ice accumulations of a light glaze are 
  expected, especially on elevated surfaces and over higher 
  terrain areas above 1500 ft. 

* WHERE...In New Jersey, Sussex county. In Pennsylvania, Carbon 
  and Monroe counties. 

* WHEN...Until 4 AM EDT early this morning.

* ADDITIONAL DETAILS...The ice will result in slippery conditions
  on sidewalks, roads and bridges.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of freezing rain
will cause travel difficulties. Expect slippery roads. Slow down
and use caution while driving. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
www.weather.gov/phi/winter
3 follow-up statements
974 
WWUS41 KPHI 160706
WSWPHI

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mount Holly NJ
306 AM EDT Mon Apr 16 2018


NJZ001-PAZ054-055-161000-
/O.EXT.KPHI.WW.Y.0018.000000T0000Z-180416T1000Z/
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
306 AM EDT Mon Apr 16 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 6 AM EDT EARLY
THIS MORNING...

* WHAT...Freezing rain. Accumulations of a light glaze are
  expected, mainly on elevated surfaces and at elevations over
  1500 feet. 

* WHERE...In New Jersey, Sussex county. In Pennsylvania, Carbon 
  and Monroe counties.

* WHEN...Until 6 AM EDT early this morning.

* ADDITIONAL DETAILS...The ice will result in very slippery 
  conditions on sidewalks, roads and bridges, including during 
  the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of freezing rain
will cause travel difficulties. Expect slippery roads. Slow down
and use caution while driving. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
www.weather.gov/phi/winter
310 
WWUS41 KPHI 160938
WSWPHI

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mount Holly NJ
538 AM EDT Mon Apr 16 2018



NJZ001-PAZ054-055-161300-
/O.EXT.KPHI.WW.Y.0018.000000T0000Z-180416T1300Z/
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
538 AM EDT Mon Apr 16 2018

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM EDT THIS
MORNING...

* WHAT...Freezing rain. Ice accumulations of a light glaze are 
  expected.

* WHERE...In New Jersey, Sussex county. In Pennsylvania, Carbon 
  and Monroe counties.

* WHEN...Until 9 AM EDT this morning.

* ADDITIONAL DETAILS...The ice will result in very slippery 
  conditions on sidewalks, roads and bridges, including during 
  the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory means that periods of freezing rain
will cause travel difficulties. Expect slippery roads. Slow down
and use caution while driving. The latest road conditions for the
state you are calling from can be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit
www.weather.gov/phi/winter
374 
WWUS41 KPHI 161242
WSWPHI

URGENT - WINTER WEATHER MESSAGE
National Weather Service Mount Holly NJ
842 AM EDT Mon Apr 16 2018

NJZ001-PAZ054-055-161345-
/O.EXP.KPHI.WW.Y.0018.000000T0000Z-180416T1300Z/
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
842 AM EDT Mon Apr 16 2018

...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM EDT THIS MORNING...

Temperatures have risen above freezing, so any the threat for
additional freezing rain has diminished. Therefore the Winter
Weather Advisory for freezing rain will be allowed to expire.
However, there will remain icy spots on untreated surfaces, and
trees and power lines as well.

$$

For more information from the National Weather Service visit
www.weather.gov/phi/winter

What forecasters said that day

The local office's own words before this winter weather 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 winter weather advisory went out at Apr 15, 9:53 PM EDT, 2 hours 39 minutes earlier.

Area forecast discussion, Apr 15, 9:53 PM EDT, 2 hours 39 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
953 PM EDT Sun Apr 15 2018

.SYNOPSIS...
A strong low pressure system and its associated fronts will
affect the region tonight and Monday. The low will move away
allowing high pressure to build over the area for Monday night
and through Tuesday. A low pressure system and its associated
fronts will affect the area Wednesday through Thursday. An upper
low will remain over the region into Friday. High pressure will
build down across the area from Canada beginning Friday night
and remaining into next weekend.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
For the 930 PM update, made some minor adjustments to the hourly
temperature and dew point grids (increased the winds a bit
more). A low-level jet above the low-level wedge of colder air
is assisting in lift resulting in quite a bit of shower
activity. This is expected to continue, then we await the
arrival of the frontal forcing very late tonight from the west
and southwest. A mesoanalysis shows a little bit of instability
spreading northward across parts of Delmarva and south/eastern
New Jersey. This is indicated on the MUCAPE analysis thus far
and therefore not enough to result in lightning production. We
therefore removed the thunder for this evening, and focused it
more with the incoming frontal forcing late tonight and more
toward morning.

Some light freezing rain is being reported at Mount Pocono
where the temperature is down to 31 degrees. It appears this
near or slightly below freezing air is above 1800 feet in
elevation, therefore rather localized. No advisory or
statements issued at this time as any light icing should be in
the highest elevations and given the gusty winds any accretion
may be limited (roads should be just wet). Temperatures are
expected to slowly rise from south to north overnight as the
low-level jet works its magic and starts to dislodge the colder
air currently stuck at the surface (surface winds start to veer
from east-northeast to southeast).

Otherwise, high-resolution models place the front in portions
of Delmarva and far southern New Jersey toward daybreak, but do
not have a lot of confidence on this placement. Models tend to
progress these fronts too far northward, and suspect this is the
case here as well. Did slow its progress somewhat from hi-res
model consensus (HRRR/RAP, NAM Nest, WRF-ARW/NMM, RGEM), but not
a whole lot from the previous forecast (not enough confidence
to do that yet). Low-CAPE/high-shear setups are always a
challenge, and the placement of the front and the quite marginal
surface-based instability are certainly adding to the
challenge. Nevertheless, with shear profiles exceptionally good
(given the pronounced veering in the low levels downstream of
the front and resultant very large low-level SRH), sufficient
instability would lead to potential for locally severe storms
toward daybreak.

QPF looks quite substantial during the 06Z to 12Z period, especially
near/northwest of the urban corridor, where 6-hour totals of
0.75-1.5 inches are likely, with locally higher totals probable
with the strongest convective cores and with any training
convection that occurs. See the hydrology section below for more
details.

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH 6 PM MONDAY/...
Front moves through the area early in the day, which is not entirely
favorable for generation of surface-based instability and a more
appreciable severe threat as the strongly-forced convection moves
through. Nevertheless, the degree of shear is large (0-6 km bulk
shear in excess of 60 kts and 0-3 km SRH in excess of 300 J/kg)
near/south of the retreating warm front. Certainly cannot rule out
damaging gusts or even a tornado (though the threat of tornadoes
seems low given the marginal surface-based instability). Main
convective line should move out of the area by late morning.

Threat of training convection and locally heavy rain exists, with an
isolated instance of flash flooding plausible. Flash flood watch
continues through 6 pm, though the threat will likely be over before
then. Main threat appears to be with small streams and in urban
areas, and the timing is concerning given the Monday morning
commute. For these reasons, decided a watch was prudent despite the
somewhat marginal setup. See the hydrology section for more details.

As the surface low scoots to the northeast near/west of the I-95
corridor during the morning, cold air aloft will move into the area
as the midlevel low approaches the region. Instability showers
(perhaps even with thunder) will likely develop upstream of the
convective line by afternoon, as depicted in most all of the
guidance. Maintained chances of this along/northwest of the I-95
corridor in particular, given this area's closer proximity to the
midlevel vort max.

Temperatures will probably begin to fall during the afternoon as
colder air filters in upstream of the cold front. Used solely hi-res
guidance for temperatures during this period, as precipitation
effects, frontal placement, and potential for rapidly changing sky
conditions in the afternoon warrant little use of statistically-
derived guidance.

&&

.LONG TERM /MONDAY NIGHT THROUGH SUNDAY/...
The strong low which brought the significant weather in the near
and short term portions of the forecast will be N/NE of the region
Monday night. While the fronts will have passed through the area
and all organized precip will be done, there is still the possibility
for some scattered showers under the upper low. We therefore have
slgt chc or low chc pops for the much of the area Monday night and
Tuesday. This scenario is being shown by both the GFS and EC models.
Below normal temperatures are expected this period with lows in the
30s and highs Tuesday only in the mid/upper 40s (north) and low 50s
for the Delaware Valley, srn NJ and Delmarva. Gusty winds 15 to 25
mph expected.

Fair weather is expected from Tuesday night into Wednesday as high
pressure arrives across the area. It will be a bit warmer than
Monday/Tuesday, but still slightly below normal for mid-April.
Highs will generally be in the mid/upper 50s north/west and
low/mid 60s south/east. These values will be 2 o 4 degrees below
normal.

Another low pressure system will approach the area later Wednesday
and last into Thursday evening. The system will be progressive,
so even though the low is depicted by the models as being
rather strong, it will not have alot of moisture to work with.
We therefore have mostly chc pops in the fcst for Wed night/Thu
and slgt chc pops into Thu night. Temperatures will remain
mostly at or a little below normal this period. The warmest day
will be Thursday (near normal) with mid/upper 50s for highs
across the north and low/mid 60s over Delmarva and srn NJ.

High pressure from Canada builds in for late this week and into the
weekend. Mostly fair weather is expected with a continuation of below
normal temperatures.

&&

.AVIATION /02Z MONDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Tonight through Monday morning...MVFR/IFR (possibly LIFR) with
low clouds and showers. Winds east-northeast 15-20 knots with
gusts near 30 knots, becoming southeasterly early Monday morning.
Southeasterly low-level wind shear (40-55 knots) overnight and
part of Monday morning.

A line of heavy showers and some thunderstorms moves through
the area between about 09Z and 14Z Monday with LIFR conditions,
torrential rain and erratic winds likely as the heaviest
portion of the line moves through. Lightning is anticipated
however the coverage is less certain and therefore a VCTS was
included for now. Conditions are expected to improve slowly to
MVFR after the heavy showers/storms pass. Moderate confidence.

Monday afternoon...Improvement to VFR, though scattered showers may
develop near/northwest of PHL. Winds becoming southwest or west
around 10 knots with gusts to 20 knots. Potential for some erratic
winds/gusts around showers. Moderate confidence.

Outlook...
Mon night thru Wed...VFR. Few showers psbl N/W Mon night/Tue.
Wed night and Thu...Mostly VFR. Sct showers.
Thu night/Fri...VFR expected.

&&

.MARINE...
Gale Warning continues, however winds may remain lighter near buoy
44009.

Models show a relative minimum in wind gusts later this evening
before winds turn southeasterly/southerly and strengthen
overnight through Monday morning. Widespread gales are expected
in advance of a line of heavy showers and storms moving through
the area between 4 AM and noon. Erratic/severe wind gusts and
torrential downpours are possible with these storms.

After the line of storms passes, winds should gradually diminish
from south to north, with small craft advisory conditions likely
during the afternoon on Delaware Bay and the Atlantic Delaware
coastal waters. Gale conditions may linger on the New Jersey coastal
waters for most of the afternoon before conditions improve by
evening.

Outlook...
Monday night/Tuesday morning...Low end SCA conditions.
Tuesday thru Friday...Sub-SCA most of the time. Near SCA seas and
a few showers possible Thursday.

&&

.HYDROLOGY...
QPF looks quite substantial during the 06Z to 12Z period, especially
near/northwest of the urban corridor, where 6-hour totals of 0.75-
1.5 inches are likely, with locally higher totals probable with the
strongest convective cores and with any training convection that
occurs. Flash flood guidance is high, and our thinking is that any
flash flooding threat would be isolated. However, nuisance/urban
flooding is probable, and the timing of the main line of convection
moving through the area (generally after 4 AM) means that impacts to
the morning rush may occur. In coordination with WFOs BGM/OKX,
hoisted a flash flood watch from the Philly metro northward into the
southern Poconos and northern New Jersey from 2 AM to 6 PM Monday,
with the main threat being associated with the primary convective
line moving through late tonight and Monday morning.

Flash flood guidance is on the high side (about 1-2 inches in an
hour) in most of the area (lowest in the urban corridor); however,
with anomalous precipitable water, considerable moisture convergence
via a very strong low-level jet impinging upon the approaching cold
front, and contributions from upslope flow, should any training
convection occur within the main line, 1-hr FFG could be met in
spots.

One of the primary concerns is the timing. With the main convective
line moving through just before or during the morning commute, heavy
rainfall may cause some traffic headaches. The nature of this event
suggests flood issues would be with flashy small streams and in poor-
drainage urban areas. Mainstem river flooding is not anticipated at
this time.

Total forecast rainfall accumulations in the watch area are
generally 1.5-3 inches, with 1-2 inches expected elsewhere (possibly
somewhat lower in the far southern portions of the county warning
area).

&&

.TIDES/COASTAL FLOODING...
Increasing astronomical tides associated with the approaching
new moon in combination with increasing anomolies as the result of
an established onshore flow will be the primary drivers for minor
to moderate flooding along the Mid-Atlantic coast into Monday
afternoon. An offshore wind shift later Monday is then expected
to end the threat of coastal flooding across the area.

A Coastal Flood Warning is in effect for the northern NJ coast
(Middlesex, Monmouth, and Ocean Counties) for the high tide this
evening and the high tide Monday morning. It may turn out that
the inlet areas and coastal streams experience slightly higher
water levels with this system, but the ocean front areas should
approach or exceed established moderate flooding levels as well.
Heading south,anomolies are expected to decrease slightly, so
coastal sections in the southern portions of Ocean County may
only see minor flooding, depending on how all the components of
this weather system play out.

Further south, a Coastal Flood Advisory is in effect for the
remainder of the New Jersey coast (Atlantic and Cape May Counties),
the Delaware coast, and all of Delaware Bay, for the high tides
this evening and Monday morning.

There is also the potential of minor flooding along the Delaware
River and upper Chesapeake Bay. For these locals, there is a
greater concern for the Monday morning high tide cycle, given an
increasing southeasterly flow regime between now and then. We will
continue to monitor this situation and issue later Advisories, if
necessary.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Flash Flood Watch from 2 AM EDT Monday through Monday
     afternoon for PAZ054-055-061-062-070-071-103>106.
NJ...Flash Flood Watch from 2 AM EDT Monday through Monday
     afternoon for NJZ001-007>010-012-015-017>019.
     Coastal Flood Advisory until 1 PM EDT Monday for NJZ021>025-
     027.
     Coastal Flood Warning until 1 PM EDT Monday for NJZ012>014-020-
     026.
     Coastal Flood Advisory until 2 PM EDT Monday for NJZ016.
DE...Coastal Flood Advisory until 1 PM EDT Monday for DEZ002>004.
     Coastal Flood Advisory until 2 PM EDT Monday for DEZ001.
MD...None.
MARINE...Gale Warning until 5 PM EDT Monday for ANZ450>453.
     Gale Warning until 11 AM EDT Monday for ANZ430-431-454-455.

&&

Synopsis...O'Hara
Near Term...CMS/Gorse
Short Term...CMS
Long Term...O'Hara
Aviation...CMS/Gorse/O'Hara
Marine...CMS/O'Hara
Hydrology...CMS
Tides/Coastal Flooding...JJM
Hazardous weather outlook, Apr 15, 3:47 PM EDT, 8 hours 45 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
347 PM EDT Sun Apr 15 2018

MDZ008-012-015-019-020-PAZ060-101-102-162000-
Cecil-Kent MD-Queen Annes-Talbot-Caroline-Berks-Western Chester-
Eastern Chester-
347 PM EDT Sun Apr 15 2018

This Hazardous Weather Outlook is for northeast Maryland, east
central Pennsylvania and southeast Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

A storm system will be affecting the region with showers, gusty winds
and possibly a thunderstorms tonight. Locally heavy rains may cause
urban and small stream flooding at times.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

Fore rural areas of Berks county, low temperatures will range from
the lower to middle 30s on Tuesday night. There is the potential for
frost, which may impact sensitive plants.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ001-007>010-015-017>019-PAZ054-055-061-062-070-071-103>106-162000-
Sussex-Warren-Morris-Hunterdon-Somerset-Mercer-Gloucester-Camden-
Northwestern Burlington-Carbon-Monroe-Lehigh-Northampton-Delaware-
Philadelphia-Western Montgomery-Eastern Montgomery-Upper Bucks-
Lower Bucks-
347 PM EDT Sun Apr 15 2018

...FLASH FLOOD WATCH IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY
AFTERNOON...

This Hazardous Weather Outlook is for central New Jersey, northern
New Jersey, northwest New Jersey, southern New Jersey, east central
Pennsylvania, northeast Pennsylvania and southeast Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ001-NJZ016-162000-
New Castle-Salem-
347 PM EDT Sun Apr 15 2018

...COASTAL FLOOD ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 2 PM
EDT MONDAY...

This Hazardous Weather Outlook is for northern Delaware and
southern New Jersey.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ013-014-020-026-162000-
Western Monmouth-Eastern Monmouth-Ocean-Coastal Ocean-
347 PM EDT Sun Apr 15 2018

...COASTAL FLOOD WARNING IN EFFECT UNTIL 1 PM EDT MONDAY...

This Hazardous Weather Outlook is for central New Jersey and
southern New Jersey.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Warning.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ012-162000-
Middlesex-
347 PM EDT Sun Apr 15 2018

...COASTAL FLOOD WARNING IN EFFECT UNTIL 1 PM EDT MONDAY...
...FLASH FLOOD WATCH IN EFFECT FROM 2 AM EDT MONDAY THROUGH MONDAY
AFTERNOON...

This Hazardous Weather Outlook is for northern New Jersey.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Warning.
   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Warning.
   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ002>004-NJZ021>025-027-162000-
Kent-Inland Sussex-Delaware Beaches-Cumberland-Atlantic-Cape May-
Atlantic Coastal Cape May-Coastal Atlantic-Southeastern Burlington-
347 PM EDT Sun Apr 15 2018

...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 1 PM EDT MONDAY...

This Hazardous Weather Outlook is for central Delaware, southern
Delaware and southern New Jersey.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Coastal Flood Advisory.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ430-431-454-455-162000-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
347 PM EDT Sun Apr 15 2018

...GALE WARNING IN EFFECT UNTIL 11 AM EDT MONDAY...

This Hazardous Weather Outlook is for Atlantic coastal waters and
Delaware Bay Waters.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ450>453-162000-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
347 PM EDT Sun Apr 15 2018

...GALE WARNING IN EFFECT UNTIL 5 PM EDT MONDAY...

This Hazardous Weather Outlook is for Atlantic coastal waters.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Gale Warning.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Special weather statement, Apr 15, 10:18 PM EDT, 2 hours 14 minutes before
Special Weather Statement
National Weather Service Mount Holly NJ
1018 PM EDT Sun Apr 15 2018

NJZ001-PAZ054-055-160430-
Sussex-Carbon-Monroe-
Including the cities of Newton, Jim Thorpe, and Stroudsburg
1018 PM EDT Sun Apr 15 2018

...Freezing Rain Possible Through Midnight in the Higher
Elevations of the Southern Poconos and Northwest New Jersey...

Freezing rain has developed in the highest elevations of the
southern Poconos and Northwest New Jersey. This could result in a
light coating of ice on elevated surfaces. The temperature is
expected to increase late tonight, changing the freezing rain over
to rain. Ice accumulation should be mainly confined to elevated
surfaces, but spotty ice will be possible on untreated bridges and
overpasses as well.

Johnson
Local storm report, Apr 15, 10:22 PM EDT, 2 hours 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1022 PM EDT SUN APR 15 2018

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

1005 PM     FREEZING RAIN    3 N WANTAGE             41.32N  74.64W
04/15/2018  E0.00 INCH       SUSSEX             NJ   TRAINED SPOTTER

            LIGHT COATING ON ELEVATED SURFACES OBSERVED.

&&

EVENT NUMBER PHI1800600

SFJ
Local storm report, Apr 15, 10:26 PM EDT, 2 hours 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1026 PM EDT SUN APR 15 2018

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

0257 PM     FREEZING RAIN    COOLBAUGH TWP           41.18N  75.49W
04/15/2018  E0.00 INCH       MONROE             PA   TRAINED SPOTTER

            MINOR ICE IN TREES AND POWER LINES. ELEVATION 1964 FT.

&&

EVENT NUMBER PHI1800601

SFJ

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 5:20 AM EDTSpecial Marine WarningPHI55 min
Apr 16, 5:34 AM EDTAreal Flood AdvisoryPHIGloucester, Salem4 hr
Apr 16, 5:52 AM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Mercer7 hr
Apr 16, 6:07 AM EDTSpecial Marine WarningPHI53 min
Apr 16, 6:30 AM EDTAreal Flood AdvisoryPHIHunterdon4 hr
Apr 16, 6:45 AM EDTSpecial Weather StatementPHICape May, Cumberland45 min
Apr 16, 6:49 AM EDTSpecial Marine WarningPHI86 min
Apr 16, 7:04 AM EDTFlash Flood WarningPHIGloucester, Salem4 hr
Apr 16, 7:26 AM EDTSpecial Weather StatementPHICamden, Gloucester, Mercer34 min
Apr 16, 7:49 AM EDTSpecial Marine WarningPHI116 min
Apr 16, 8:13 AM EDTSpecial Marine WarningPHI62 min
Apr 16, 8:28 AM EDTSpecial Weather StatementPHIMiddlesex, Monmouth, Morris, Somerset, Sussex, Warren47 min
Apr 16, 9:08 AM EDTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more4 hr
Apr 16, 9:26 AM EDTAreal Flood WarningPHIBurlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 3 more4 hr
Apr 16, 1:18 PM EDTCoastal Flood AdvisoryPHIMiddlesex, Monmouth, Ocean13 hr
Apr 16, 1:31 PM EDTAreal Flood WarningPHIBurlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 2 more4 hr
Apr 16, 2:45 PM EDTCoastal Flood WarningPHIBurlington, Camden, Gloucester, Mercer3 hr
Apr 16, 3:52 PM EDTSmall Craft AdvisoryPHI44 hr
Apr 16, 4:46 PM EDTRiver Flood WarningPHISomerset28 hr
Apr 16, 5:27 PM EDTAreal Flood WarningPHISomerset8 hr
Apr 16, 7:45 AM EDTRiver Flood WarningPHIDelaware4 hr
Apr 16, 8:44 AM EDTAreal Flood WarningPHIPhiladelphia2 hr
Apr 16, 10:45 AM EDTAreal Flood WarningPHIChester, Delaware, Montgomery, Philadelphia4 hr
Apr 16, 11:41 AM EDTRiver Flood WarningPHIBucks12 hr
Apr 16, 12:04 PM EDTSpecial Weather StatementPHIChester26 min
Apr 16, 2:27 PM EDTAreal Flood WarningPHIMontgomery, Philadelphia5 hr

Nearby

Winter Weather Advisories in Pennsylvania, 2018Winter Weather Advisories in New Jersey, 2018Every winter weather advisory in 2018

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.