Alert archive / New Jersey / Winter Weather Advisories in 2017
Winter Weather Advisory 17, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter weather advisory at Dec 15, 2017, 3:26 AM EST for 4 states. It took effect at Dec 15, 2017, 1:00 PM EST. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Dec 15, 2017, 3:26 AM EST (08:26 UTC)
- In effect from
- Dec 15, 2017, 1:00 PM EST
- Expired
- Dec 15, 2017, 9:00 PM EST
- In force
- 8 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 24 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 79 km from the middle of the area, began a volume at 08:24 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 8.4 hours before the alert went out and 189 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1628 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- -120 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
681 WWUS41 KPHI 150826 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 326 AM EST Fri Dec 15 2017 DEZ001>003-MDZ008-012-015-020-NJZ016>027-PAZ070-071-152030- /O.NEW.KPHI.WW.Y.0004.171215T1800Z-171216T0200Z/ New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Caroline- Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic- Coastal Ocean-Southeastern Burlington-Delaware-Philadelphia- Including the cities of Wilmington, Dover, Georgetown, Elkton, Chestertown, Centreville, Denton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Ocean City, Atlantic City, Long Beach Island, Wharton State Forest, Media, and Philadelphia 326 AM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM EST THIS EVENING... * WHAT...Snow expected. Plan on slippery road conditions, including during the evening commute. Total snow accumulations of 1 to 3 inches are expected. * WHERE...Portions of southern New Jersey, far southeast Pennsylvania, northeast Maryland and inland Delaware. This is for locations generally along and southeast of the Delaware Valley. * WHEN...From 1 PM this afternoon to 9 PM EST this evening. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ For more information from the National Weather Service visit www.weather.gov/phi/winter
5 follow-up statements
840 WWUS41 KPHI 151611 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 1111 AM EST Fri Dec 15 2017 ...SNOW TO CAUSE TRAVEL DIFFICULTIES FOR THE COMMUTE HOME THIS AFTERNOON AND EVENING... NJZ012>015-160200- /O.EXB.KPHI.WW.Y.0004.171215T1900Z-171216T0200Z/ Middlesex-Western Monmouth-Eastern Monmouth-Mercer- Including the cities of New Brunswick, Freehold, Sandy Hook, and Trenton 1111 AM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 9 PM EST THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 2 to 3 inches are expected. Road conditions will be slippery during the late afternoon and evening commute today. * WHERE...Middlesex, western Monmouth, eastern Monmouth and Mercer counties in central New Jersey. * WHEN...From 2 PM this afternoon to 9 PM EST this evening. The steadiest and heaviest snow is expected to fall between 3 and 6 PM with snowfall rates of 1 inch per hour possible. * ADDITIONAL DETAILS...Below freezing temperatures will allow for snow to stick on untreated roads. Plan on travel delays with roads becoming snow covered and reduced visibility at times during the evening rush hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ DEZ001>003-MDZ008-012-015-020-NJZ016>027-PAZ070-071-160200- /O.CON.KPHI.WW.Y.0004.171215T1800Z-171216T0200Z/ New Castle-Kent-Inland Sussex-Cecil-Kent MD-Queen Annes-Caroline- Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Atlantic Coastal Cape May-Coastal Atlantic- Coastal Ocean-Southeastern Burlington-Delaware-Philadelphia- Including the cities of Wilmington, Dover, Georgetown, Elkton, Chestertown, Centreville, Denton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Ocean City, Atlantic City, Long Beach Island, Wharton State Forest, Media, and Philadelphia 1111 AM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches are expected with locally higher amounts around 4 inches possible. Road conditions will be slippery during the late afternoon and evening commute today. * WHERE...Portions of southern New Jersey, southeast Pennsylvania, northeast Maryland and central, northern and southern Delaware. * WHEN...From 1 PM this afternoon to 9 PM EST this evening. The steadiest and heaviest snow is expected to fall between 2 and 6 PM with snowfall rates of 1 inch per hour possible. * ADDITIONAL DETAILS...Below freezing temperatures will allow for snow to stick on untreated roads. Plan on travel delays with roads becoming snow covered and reduced visibility at times during the evening rush hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ For more information from the National Weather Service visit www.weather.gov/phi/winter JRK
211 WWUS41 KPHI 151902 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 202 PM EST Fri Dec 15 2017 ...SNOW TO CAUSE TRAVEL DIFFICULTIES FOR THE COMMUTE HOME THIS AFTERNOON AND EVENING... PAZ102-104-106-160000- /O.EXB.KPHI.WW.Y.0004.000000T0000Z-171216T0000Z/ Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 202 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 7 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 1 to 3 inches are expected. Road conditions will be slippery this afternoon and into the early evening commute. * WHERE...Eastern Chester, eastern Montgomery and lower Bucks counties. * WHEN...Until 7 PM EST this evening. The steadiest and heaviest snow will fall through 4 PM with snowfall rates of 1 inch per hour possible in spots. * ADDITIONAL DETAILS...With temperatures well below freezing, snow will stick on untreated roads and even pre-treated highways in bursts of heavier snow. Plan on travel delays with roads becoming snow covered and reduced visibility at times through the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ MDZ019-160200- /O.EXA.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Talbot- Including the city of Easton 202 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Mixed precipitation occurring. Snow accumulations of up to one inch and a trace of ice accumulation are expected. Road conditions will be slippery during the afternoon and evening commute. * WHERE...Talbot county. * WHEN...Until 9 PM EST this evening. A mix of freezing rain, sleet and snow will change over to snow by late this afternoon. * ADDITIONAL DETAILS...With temperatures below freezing, a glaze of ice in addition to a slushy mix of snow and sleet will accumulate on untreated roads. Plan on travel delays and reduced visibility at times through the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ DEZ001-002-MDZ008-NJZ016>027-PAZ070-071-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ New Castle-Kent-Cecil-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington-Delaware-Philadelphia- Including the cities of Wilmington, Dover, Elkton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Ocean City, Atlantic City, Long Beach Island, Wharton State Forest, Media, and Philadelphia 202 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 1 to 3 inches are expected with locally higher amounts around 4 inches possible. Road conditions will be slippery this afternoon and evening. * WHERE...Portions of southern New Jersey, southeast Pennsylvania, northeast Maryland and central and northern Delaware. * WHEN...Until 9 PM EST this evening. The steadiest and heaviest snow is expected to fall between 2 and 6 PM with snowfall rates of 1 inch per hour likely in spots. * ADDITIONAL DETAILS...With temperatures well below freezing, snow will stick on untreated roads and even pre-treated highways in bursts of heavier snow. Plan on travel delays with roads becoming snow covered and reduced visibility at times through the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ DEZ003-MDZ012-015-020-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Inland Sussex-Kent MD-Queen Annes-Caroline- Including the cities of Georgetown, Chestertown, Centreville, and Denton 202 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Mixed precipitation occurring. Snow accumulations of up to two inches and a trace of ice accumulation are expected. Road conditions will be slippery during the afternoon and evening commute. * WHERE...Kent, Queen Annes and Caroline counties in Maryland and inland Sussex county in Delaware. * WHEN...Until 9 PM EST this evening. A mix of freezing rain, sleet and snow will change over to snow by late this afternoon. The steadiest and heaviest snow is expected to fall between 3 and 5 PM with snowfall rates up to 1 inch per hour likely in spots. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Be prepared for slippery roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ NJZ012>015-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Middlesex-Western Monmouth-Eastern Monmouth-Mercer- Including the cities of New Brunswick, Freehold, Sandy Hook, and Trenton 202 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 2 to 3 inches are expected. Road conditions will be slippery this afternoon and evening. * WHERE...Middlesex, western Monmouth, eastern Monmouth and Mercer counties. * WHEN...Until 9 PM EST this evening. The steadiest and heaviest snow is expected to fall between 3 and 6 PM with snowfall rates of 1 inch per hour likely in spots. * ADDITIONAL DETAILS...Be prepared for reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Be prepared for snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ For more information from the National Weather Service visit www.weather.gov/phi/winter
222 WWUS41 KPHI 152345 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 645 PM EST Fri Dec 15 2017 ...SNOW CONTINUES TO CAUSE TRAVEL DIFFICULTIES THIS EVENING... PAZ102-104-106-160045- /O.CAN.KPHI.WW.Y.0004.000000T0000Z-171216T0000Z/ Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 645 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY IS CANCELLED... The accumulating snow has ended in Chester County, Montgomery County and Bucks County. As a result, the Winter Weather Advisory has been cancelled. $$ DEZ001-002-MDZ008-NJZ016>027-PAZ070-071-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ New Castle-Kent-Cecil-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington-Delaware-Philadelphia- Including the cities of Wilmington, Dover, Elkton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Ocean City, Atlantic City, Long Beach Island, Wharton State Forest, Media, and Philadelphia 645 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 1 to 3 inches are expected. Locally higher amounts around 4 inches possible in southern New Jersey. Road conditions may be slippery tonight. * WHERE...Portions of southern New Jersey, southeast Pennsylvania, northeast Maryland and central and northern Delaware. * WHEN...Until 9 PM EST this evening. The snow is expected to end this evening. * ADDITIONAL DETAILS...With temperatures well below freezing, snow remains on untreated roads and walkways. Plan on travel delays. PRECAUTIONARY/PREPAREDNESS ACTIONS... This Winter Weather Advisory means that snow is causing travel difficulties. Be prepared for slippery roads, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ DEZ003-MDZ012-015-019-020-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline- Including the cities of Georgetown, Chestertown, Centreville, Easton, and Denton 645 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations up to around an inch are expected. Road conditions may be slippery tonight. * WHERE...Kent, Queen Annes and Caroline counties in Maryland and inland Sussex county in Delaware. * WHEN...Until 9 PM EST this evening. The snow is expected to end this evening. * ADDITIONAL DETAILS...With temperatures well below freezing, snow remains on untreated roads and walkways. Plan on travel delays. PRECAUTIONARY/PREPAREDNESS ACTIONS... This Winter Weather Advisory means that snow is causing travel difficulties. Be prepared for slippery roads, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ NJZ012>015-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Middlesex-Western Monmouth-Eastern Monmouth-Mercer- Including the cities of New Brunswick, Freehold, Sandy Hook, and Trenton 645 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 2 to 3 inches are expected. Road conditions may be slippery tonight. * WHERE...Middlesex, western Monmouth, eastern Monmouth and Mercer Counties. * WHEN...Until 9 PM EST this evening. The snow is expected to end this evening. * ADDITIONAL DETAILS...With temperatures well below freezing, snow remains on untreated roads and walkways. Plan on travel delays. PRECAUTIONARY/PREPAREDNESS ACTIONS... This Winter Weather Advisory means that snow is causing travel difficulties. Be prepared for slippery roads, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ For more information from the National Weather Service visit www.weather.gov/phi/winter
012 WWUS41 KPHI 160038 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 738 PM EST Fri Dec 15 2017 ...SNOW CONTINUES TO CAUSE TRAVEL DIFFICULTIES THIS EVENING... DEZ001-002-MDZ008-012-015-019-020-NJZ016>018-PAZ070-071-160145- /O.CAN.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ New Castle-Kent-Cecil-Kent MD-Queen Annes-Talbot-Caroline-Salem- Gloucester-Camden-Delaware-Philadelphia- Including the cities of Wilmington, Dover, Elkton, Chestertown, Centreville, Easton, Denton, Pennsville, Glassboro, Camden, Cherry Hill, Media, and Philadelphia 738 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY IS CANCELLED... The accumulating snow has ended. As a result, the Winter Weather Advisory has been cancelled. $$ NJZ019>027-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- Including the cities of Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Ocean City, Atlantic City, Long Beach Island, and Wharton State Forest 738 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 1 to 3 inches are expected with locally higher amounts around 4 inches. Road conditions may be slippery tonight. * WHERE...Portions of southern New Jersey. * WHEN...Until 9 PM EST this evening. The snow will end this evening. * ADDITIONAL DETAILS...With temperatures well below freezing, snow remains on untreated roads and walkways. Plan on travel delays. PRECAUTIONARY/PREPAREDNESS ACTIONS... This Winter Weather Advisory means that snow will cause travel difficulties. Be prepared for slippery roads. Slow down and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ DEZ003-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Inland Sussex- Including the city of Georgetown 738 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations up to around an inch are expected. Road conditions may be slippery tonight. * WHERE...Inland Sussex county in Delaware. * WHEN...Until 9 PM EST this evening. The snow will end this evening. * ADDITIONAL DETAILS...With temperatures well below freezing, snow remains on untreated roads and walkways. Plan on travel delays. PRECAUTIONARY/PREPAREDNESS ACTIONS... This Winter Weather Advisory means that snow will cause travel difficulties. Be prepared for 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. $$ NJZ012>015-160200- /O.CON.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Middlesex-Western Monmouth-Eastern Monmouth-Mercer- Including the cities of New Brunswick, Freehold, Sandy Hook, and Trenton 738 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 PM EST THIS EVENING... * WHAT...Snow occurring. Total snow accumulations of 2 to 3 inches are expected. Road conditions may be slippery tonight. * WHERE...Middlesex, Monmouth and Mercer Counties. * WHEN...Until 9 PM EST this evening. The snow will end this evening. * ADDITIONAL DETAILS...With temperatures well below freezing, snow remains on untreated roads and walkways. Plan on travel delays. PRECAUTIONARY/PREPAREDNESS ACTIONS... This Winter Weather Advisory means that snow will cause travel difficulties. Be prepared for slippery roads. Slow down and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. $$ For more information from the National Weather Service visit www.weather.gov/phi/winter
292 WWUS41 KPHI 160154 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 854 PM EST Fri Dec 15 2017 NJZ019>027-160300- /O.EXP.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Northwestern Burlington-Ocean-Cumberland-Atlantic-Cape May- Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- Including the cities of Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Ocean City, Atlantic City, Long Beach Island, and Wharton State Forest 854 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 PM EST THIS EVENING... The accumulating snow has come to an end. As a result, the Winter Weather Advisory will expire at 9:00 PM. $$ DEZ003-160300- /O.EXP.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Inland Sussex- Including the city of Georgetown 854 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 PM EST THIS EVENING... The accumulating snow has come to an end. As a result, the Winter Weather Advisory will expire at 9:00 PM. $$ NJZ012>015-160300- /O.EXP.KPHI.WW.Y.0004.000000T0000Z-171216T0200Z/ Middlesex-Western Monmouth-Eastern Monmouth-Mercer- Including the cities of New Brunswick, Freehold, Sandy Hook, and Trenton 854 PM EST Fri Dec 15 2017 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 PM EST THIS EVENING... The accumulating snow has come to an end. As a result, the Winter Weather Advisory will expire at 9:00 PM. $$ 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 Dec 15, 12:38 AM EST, 2 hours 48 minutes earlier.
Area forecast discussion, Dec 15, 12:38 AM EST, 2 hours 48 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
1238 AM EST Fri Dec 15 2017
.SYNOPSIS...
High pressure will build in across the area tonight through Friday
and then weaken. A low pressure system will move up the Middle
Atlantic coast Friday afternoon and evening. High pressure will return
for most of the weekend. A weak low pressure system will move through
Sunday night into Monday with another low expected for Tuesday.
High pressure will build in for the middle part of next week.
&&
.NEAR TERM /UNTIL 6 AM THIS MORNING/...
Current forecast looks pretty much on track with winds becoming
light NW and temps falling in the teens and low 20s most areas
(except a bit warmer over northern Delmarva). Some patchy CI
extends fairly far upstream and should continue to move across
the area overnight, which may somewhat limit further radiational
cooling. Will not make any changes to forecast mins attm.
Previous discussion...
High pressure builds into the region tonight. This will allow winds
to become light, especially late this evening and overnight as the
pressure gradient weakens. High clouds associated with an upper jet
streak will spread into the area this evening and overnight before
eroding from south to north toward early morning. We currently do
not anticipate this cirrus deck to have a significant impact on
radiational cooling. Accordingly, forecast low temperatures are on
the cooler side of the guidance with lows in the teens area wide
(slight cooler in the Poconos and slightly warmer in the cities. As
far as how we get there: temperatures should drop quickly after dark
despite the continued NW winds 5-15 mph given the tail end of the
stronger post-frontal CAA surge is projected to occur 21Z-00Z this
evening, then continue to fall but at a slower clip late this
evening and overnight.
&&
.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM SATURDAY/...
The next shortwave disturbance is forecast to dig around the
backside of the large scale trough across the Midwest/Great
Lakes region on Friday. There looks to be another weaker
shortwave farther south that will be tracking eastward into the
central Appalachians. The latest 12Z models trended toward
slightly more pronounced with (at least some degree of) of
phasing between these two systems as they approach the Mid-
Atlantic region in the afternoon. This is evident in the upper-
level jet streak that strengthens to 180-190 kt at 250 mb) just
to our south by the afternoon as well as coastal cyclogensis
that occurs near the NC/VA border midday.
Large-scale lift in the left-exit region of the upper-level jet
streak and in WAA/southwesterly flow ahead of the trough will likely
lead to the development of light precipitation during the afternoon
over coastal plain and possibly back into the I-95 corridor. Given
the trends seen in today's guidance, PoPs were increased to chance
for the I-95 corridor and to likely for Delmarva and southern NJ by
late afternoon. Although temperatures in the coastal plain may be in
the mid to upper 30s early in the afternoon, evaporative cooling
should bring them down to freezing as precip arrives. Accordingly,
ptype looks to be primarily snow for this event with the possibility
of a brief rain/snow mix at the onset near the coast.
The progressive pattern makes this a short-duration event, limiting
the risk for more substantial snowfall accumulations. Forecast
amounts that went out with the afternoon forecast package are 1" or
less for Delmarva and southern New Jersey. There is some support for
mesoscale banding (through snow bands would be much more transitory
than what we saw with the December 8-9 event) that would lead to
locally higher amounts with frontogenesis potentially occurring on
the northwestern side of the developing surface low. For the I-95
corridor, kept snowfall accumulations out of the forecast for now
with them predicted to be on the north/western fringe of the
organized lift and precipitation shield. We may need to expand light
accumulations a bit farther back to the north/west if trends
continue this way.
&&
.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
The offshore low (from the short term) will continue to pull
away Friday night and pops will decrease through the night. Any
accumulations of snow across srn NJ or coastal Delmarva will be
light after 00Z Saturday. High pressure will begin to build in
by morning. Low temperatures Saturday morning will bottom out in
the in the teens or low 20s far north and mid/upper 20s other
areas.
The weekend looks to be mostly fair at this point with high pressure
affecting the area. Temperatures will be a little below normal for
mid December, but not the the harsh chill like we had the past few
days. Clouds will increase later Sunday as a weak system begins to
arrive from the south/west. This system will be rather disorganized
and is not even shown producing qpf on the 12Z GFS model. Nonetheless,
since the other models are showing some precip, we have put some
chc pops are in the fcst for these areas. Mostly rain S/E with some
snow psbl N/W. Low confid overall.
Monday through Tuesday night will have mostly fair weather for the
area. Under upper ridging, temperatures will rise back to above
normal values with highs Monday and Tuesday in the 50s over
Delmarva and metro Philadelphia and mostly mid/upper 40s for the
Lehigh Valley and central NJ areas. It's possible that a few showers
may occur, but confid is rather limited and thus any pops in the
grids attm are in the slgt chc range. Chance pops will be found
Tuesday across the N/W areas with a front affecting those areas.
Wednesday and beyond will be mostly fair as another high pressure
areas moves in. Most of the operational 12Z models have this period
as dry. Temperatures should be back near normal values.
&&
.AVIATION /06Z FRIDAY THROUGH TUESDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.
Tonight...VFR. Winds will decrease to 5- 10 kt this evening and
5 kt or less by late tonight. High confidence.
Friday...VFR and light/variable winds in the morning. By the
afternoon, expecting widespread MVFR ceilings across the area.
Confidence is increasing in light snow developing along and
especially south/east of I-95 terminals. A light SW winds around
5 kt should develop. Moderate confidence in the flight category
and timing of the snow.
Outlook...
Fri night...VFR conditions returning to S/E terminals with snow
ending during the late evening. VFR elsewhere.
Sat thru Sunday...Mostly VFR. Sunday night thru
Tuesday...Mostly VFR. Few showers psbl.
&&
.MARINE...
Wind gusts near 25 kt will remain possible for the next few
hours along the northern and central NJ shore. Otherwise, winds
and seas should stay below small craft advisory criteria through
the rest of today. Snow will likely develop over the DE Bay and
the coastal waters of southern NJ and DE Friday afternoon.
Outlook...
Fri night/Saturday...SCA conditions developing on the ocean behind
the departing low. Mostly sub-SCA for Delaware Bay.
Sat night thru Monday...Sub-SCA expected. Showers psbl Sun night.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...Small Craft Advisory until 5 AM EST early this morning for
ANZ450-451.
&&
Synopsis...O'Hara
Near Term...AMC/Klein
Short Term...Klein
Long Term...O'Hara
Aviation...Johnson/Klein/O'Hara
Marine...Johnson/Klein/O'HaraHazardous weather outlook, Dec 14, 5:31 PM EST, 9 hours 55 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 531 PM EST Thu Dec 14 2017 MDZ008-NJZ001-007>010-012>015-019-PAZ054-055-060>062-070-071-101>106- 152245- Cecil-Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Northwestern Burlington- Carbon-Monroe-Berks-Lehigh-Northampton-Delaware-Philadelphia- Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- 531 PM EST Thu Dec 14 2017 This Hazardous Weather Outlook is for northeast Maryland, central New Jersey, northern New Jersey, northwest New Jersey, southern New Jersey, east central Pennsylvania, northeast Pennsylvania and southeast Pennsylvania. .DAY ONE...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. DEZ001>004-MDZ012-015-019-020-NJZ016>018-020>027-152245- New Castle-Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes- Talbot-Caroline-Salem-Gloucester-Camden-Ocean-Cumberland-Atlantic- Cape May-Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington- 531 PM EST Thu Dec 14 2017 This Hazardous Weather Outlook is for central Delaware, northern Delaware, southern Delaware, northeast Maryland and southern New Jersey. .DAY ONE...Tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Light snow will occur across Delmarva and southern New Jersey late Friday afternoon and evening. Roads may become slippery during the evening commute. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ430-431-450>455-152245- 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 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- 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- 531 PM EST Thu Dec 14 2017 This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...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... Spotter activation is not expected at this time.
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 15, 3:30 AM EST | Gale Watch | PHI | 12 hr | |
| Dec 15, 3:30 AM EST | Small Craft Advisory | PHI | 43 hr |
Nearby
Winter Weather Advisories in New Jersey, 2017Winter Weather Advisories in Maryland, 2017Winter Weather Advisories in Pennsylvania, 2017Every winter weather advisory in 2017
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.