Alert archive / New Jersey / Winter Weather Advisories in 2020
Winter Weather Advisory 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter weather advisory at Jan 17, 2020, 3:37 AM EST for 4 states. It took effect at Jan 18, 2020, 10:00 AM EST. It was in force for 10 hr.
The area
The counties it named.
The facts
- Issued
- Jan 17, 2020, 3:37 AM EST (08:37 UTC)
- In effect from
- Jan 18, 2020, 10:00 AM EST
- Expired
- Jan 18, 2020, 8:27 PM EST
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 23 counties
New Castle County, DE, Cecil County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Morris County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 77 km from the middle of the area, began a volume at 08:38 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, 8.6 hours before the alert went out and 205 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
- 8 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1540 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
497 WWUS41 KPHI 170837 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 337 AM EST Fri Jan 17 2020 NJZ001-007>009-PAZ060>062-103-105-172100- /O.NEW.KPHI.WW.Y.0002.200118T1500Z-200119T0600Z/ Sussex-Warren-Morris-Hunterdon-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, and Perkasie 337 AM EST Fri Jan 17 2020 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM SATURDAY TO 1 AM EST SUNDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. * WHERE...Berks County, the Lehigh Valley, and adjacent portions of northern and northwest New Jersey. * WHEN...From 10 AM Saturday to 1 AM EST Sunday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow is expected to develop from late morning into the afternoon on Saturday. The heaviest snow will likely occur from mid to late afternoon. Snow may mix with sleet or rain by early Saturday evening before tapering off overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ PAZ054-055-172100- /O.NEW.KPHI.WW.Y.0002.200118T1500Z-200119T0600Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 337 AM EST Fri Jan 17 2020 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM SATURDAY TO 1 AM EST SUNDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. * WHERE...Carbon and Monroe Counties in Pennsylvania. * WHEN...From 10 AM Saturday to 1 AM EST Sunday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow is expected to develop during the late morning and early afternoon on Saturday. The heaviest snow is expected from the mid afternoon to early evening hours. Precipitation should gradually taper off Saturday night. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CMS
4 follow-up statements
446 WWUS41 KPHI 172048 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 348 PM EST Fri Jan 17 2020 NJZ010-012-015-PAZ101-106-180900- /O.EXA.KPHI.WW.Y.0002.200118T1500Z-200119T0600Z/ Somerset-Middlesex-Mercer-Western Chester-Lower Bucks- Including the cities of Somerville, New Brunswick, Trenton, Honey Brook, Oxford, Morrisville, and Doylestown 348 PM EST Fri Jan 17 2020 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 AM SATURDAY TO 1 AM EST SUNDAY... * WHAT...Snow expected. Total snow accumulations of 1 to 3 inches. * WHERE...In New Jersey, Somerset, Middlesex and Mercer. In Pennsylvania, Western Chester and Lower Bucks. * WHEN...From 10 AM Saturday to 1 AM EST Sunday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow is expected to develop west to east from Saturday morning into the afternoon. The heaviest snow will likely occur from mid to late afternoon. Snow will likely change to rain through the early evening with some sleet possible during the transition. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ001-007>009-PAZ060>062-103-105-180900- /O.CON.KPHI.WW.Y.0002.200118T1500Z-200119T0600Z/ Sussex-Warren-Morris-Hunterdon-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, and Perkasie 348 PM EST Fri Jan 17 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 1 AM EST SUNDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. * WHERE...Portions of northern and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...From 10 AM Saturday to 1 AM EST Sunday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow is expected to develop west to east from Saturday morning into the afternoon. The heaviest snow will likely occur from mid to late afternoon. Snow will likely mix with sleet and rain by early Saturday evening before tapering off overnight. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ PAZ054-055-180900- /O.CON.KPHI.WW.Y.0002.200118T1500Z-200119T0600Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 348 PM EST Fri Jan 17 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 10 AM SATURDAY TO 1 AM EST SUNDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. * WHERE...Carbon and Monroe. * WHEN...From 10 AM Saturday to 1 AM EST Sunday. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow is expected to develop during the Saturday morning into the afternoon. The heaviest snow is expected from the mid afternoon to early evening hours. Some sleet may also mix in during the evening. Precipitation should gradually taper off Saturday night. * PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Fitzsimmons / Davis
013 WWUS41 KPHI 180832 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 332 AM EST Sat Jan 18 2020 NJZ001-007>010-012-015-PAZ060>062-101-103-105-106-182100- /O.EXT.KPHI.WW.Y.0002.200118T1500Z-200119T0300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-Berks- Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Trenton, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 332 AM EST Sat Jan 18 2020 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 AM THIS MORNING TO 10 PM EST THIS EVENING... * WHAT...Snow and sleet expected. Total accumulations of 1 to 4 inches. * WHERE...Portions of central, northern, and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...From 10 AM this morning to 10 PM EST this evening. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow is expected to move into the area by late this morning or early this afternoon. A brief lull may occur after the first period of snow, but precipitation will pick up again by mid afternoon. Snow may mix with sleet from late afternoon into the early evening. Precipitation will end by late evening, possibly as rain near and south of the Interstate 78 corridor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ PAZ054-055-182100- /O.EXT.KPHI.WW.Y.0002.200118T1500Z-200119T0300Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 332 AM EST Sat Jan 18 2020 ...WINTER WEATHER ADVISORY NOW IN EFFECT FROM 10 AM THIS MORNING TO 10 PM EST THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches. * WHERE...Carbon and Monroe Counties in Pennsylvania. * WHEN...From 10 AM this morning to 10 PM EST this evening. * IMPACTS...Plan on slippery road conditions. * ADDITIONAL DETAILS...Snow is expected to begin by late morning or early afternoon. The heaviest snow will occur from mid afternoon through early evening before gradually tapering off late this evening. Snow may mix with sleet at times, especially late this afternoon. * PRECAUTIONARY/PREPAREDNESS ACTIONS... PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CMS
150 WWUS41 KPHI 182045 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 345 PM EST Sat Jan 18 2020 DEZ001-MDZ008-NJZ016>019-PAZ070-071-102-104-190300- /O.EXA.KPHI.WW.Y.0002.000000T0000Z-200119T0300Z/ New Castle-Cecil-Salem-Gloucester-Camden-Northwestern Burlington- Delaware-Philadelphia-Eastern Chester-Eastern Montgomery- Including the cities of Wilmington, Elkton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, and Lansdale 345 PM EST Sat Jan 18 2020 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING... * WHAT...Mixed precipitation. Additional snow accumulations of up to one inch and ice accumulations of a light glaze. * WHERE...Portions of southern New Jersey, southeast Pennsylvania, northeast Maryland and northern Delaware. * WHEN...Until 10 PM EST this evening. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ001-007>010-012-015-PAZ060>062-101-103-105-106-190300- /O.CON.KPHI.WW.Y.0002.000000T0000Z-200119T0300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-Berks- Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Trenton, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 345 PM EST Sat Jan 18 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS EVENING... * WHAT...Snow and sleet expected. Total accumulations of 1 to 4 inches. * WHERE...Portions of central, northern and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...Until 10 PM EST this evening. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ PAZ054-055-190300- /O.CON.KPHI.WW.Y.0002.000000T0000Z-200119T0300Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 345 PM EST Sat Jan 18 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM EST THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches. * WHERE...Carbon and Monroe. * WHEN...Until 10 PM EST this evening. * IMPACTS...Plan on slippery road conditions. * PRECAUTIONARY/PREPAREDNESS ACTIONS... PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Davis
362 WWUS41 KPHI 190127 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 827 PM EST Sat Jan 18 2020 DEZ001-MDZ008-NJZ001-007>010-012-015>019-PAZ054-055-060>062-070- 071-101>106-190230- /O.CAN.KPHI.WW.Y.0002.000000T0000Z-200119T0300Z/ New Castle-Cecil-Sussex-Warren-Morris-Hunterdon-Somerset- Middlesex-Mercer-Salem-Gloucester-Camden-Northwestern Burlington- Carbon-Monroe-Berks-Lehigh-Northampton-Delaware-Philadelphia- Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Wilmington, Elkton, Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 827 PM EST Sat Jan 18 2020 ...WINTER WEATHER ADVISORY IS CANCELLED... The steady precipitation has ended. Patchy icy spots are still possible, so continue to exercise caution when traveling overnight. $$
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 Jan 16, 9:39 PM EST, 5 hours 58 minutes earlier.
Area forecast discussion, Jan 16, 9:39 PM EST, 5 hours 58 minutes before
Area Forecast Discussion National Weather Service Mount Holly NJ 939 PM EST Thu Jan 16 2020 .SYNOPSIS... High pressure will build across the region for a short stint through the day Friday before an area of low pressure lifts across the Great Lakes into Saturday morning. By Sunday morning, this low will begin to push offshore as a broad arctic high builds southward out of central Canada into the eastern U.S. early next week. && .NEAR TERM /THROUGH FRIDAY/... Low pressure will continue to strengthen as it moves northeastward offshore of southeastern Canada tonight. Meanwhile, strong high pressure builds across the Great Lakes tonight. Between the two, we will remain under a tight pressure gradient. Winds above the surface remain fairly strong overnight, and with decent mixing, winds will remain gusty at times through the night. Winds will continue to gust 30-40 mph with occasional higher gusts. A line of snow showers was progressing southward across eastern Pennsylvania and into southern New Jersey this evening, and will continue pushing southward over the next few hours even into Delaware and Maryland. Most of this line is fairly light snow, but a brief period of heavier snow will be possible and lead to a light dusting for some areas, otherwise, little to no additional accumulation is expected.. This is associated with an area of enhanced low- mid level lift and moisture and as it sinks southward, most precipitation north of this line will end. The exception will be across the Poconos where light snow should could continue into the overnight before dissipating. As a surface trough moves across the area overnight around the low to our northeast, drier air will move into the area, diminishing the potential for snow showers by later in the night after midnight. Eventually, the showers will end and skies will begin to somewhat clear out some, except portions of northeast Pennsylvania and northern New Jersey. It will still be a fairly cold night due to continued strong cold advection with lows generally in the low to mid 20s (colder in the Poconos/NW NJ). The wind will make it feel even colder, with wind chills in the single digits to teens, and sub-zero for the higher elevations. && .SHORT TERM /FRIDAY NIGHT THROUGH 6 AM FRIDAY/... Friday should be a quiet and very dry (i.e. single digit dewpoints) day as strong high pressure progresses NEwrd toward the area, ultimately residing near the Ontario/Quebec border by Friday afternoon. Despite sunny skies, 925mb temps in the -8 to -12C range (roughly the top of the mixed layer) will only support high temperatures in the low to mid 30s (even colder in the Poconos/NW NJ). Although it will not be as windy as today, there should still be a modest NW breeze (particularly early), so it will certainly feel like a brisk mid-January day. && .LONG TERM /FRIDAY THROUGH THURSDAY/... Overview...The long term begins quiet Saturday morning, but quickly ramps up as a strong surface high (1045+ mb) shifts across southern Ontario and Quebec into northern New England as a strong surface low quickly moves in its heels across the Great Lakes bringing us our highly-anticipated winter weather (at least for some). An arctic high will then build southward from northern Canada, bringing some of the frigid air from central Alaska southward across the eastern U.S. into early next week and leading to a downward trend towards more seasonable high temperatures for this time of year. Now turning our attention towards the main concern of the long term: the weekend winter storm potential. No significant changes through this forecast cycle, with the warming trend and slightly further northward track of the surface low still continuing to hold strong. Strong cold air will develop across the region as radiational cooling and cold air advection as the high moves off to the north and east of our area Friday night. Given this cold air, strong isentropic lift ahead of the system will likely promote a decent period of moderate snowfall initially, with a changeover to rain occuring from south to north. Strong warm air advection will quickly begin to erode this cold surface layer throughout the day Saturday as a 70+ kt 850 mb jet pumps in warm air from the south. Very dry air ahead of the system will be another factor that will have to be overcome. This lift will have to work awhile to moisten the surface layer before a changeover does occur-this is one factor working in favor of our snowfall potential. While a broad area of snowfall is still likely at the onset of this system, it will be hard to get a significant snowfall for the Philly Metro and points south and east. Here are some of the limiting factors. 1) Extending from the previous forecast cycle, the northward track of the low across the Great Lakes and southeast Canada into Maine is not a climatologically favorable snow-producing track. 2) The overall speed of the system continues to suggest a later onset into Saturday afternoon, providing more time for solar heating Saturday morning. 3) The progressive nature of the surface low and attendant shortwave will preclude most long-lasting effects. On the other hand, there are a few factors working for this system. 1) Radiational cooling Friday night into Saturday morning will cool the airmass ahead of the system along with the overall cold advection behind the quickly-retreating surface high to our north and east. The more quickly the snowfall can move into the region, the longer it will stay snow. 2) Very dry air ahead of the system with dew points dropping into the single digits will enhance diabatic cooling effects as snow moves into the region. Given the relatively strong cold and dry airmass ahead of the system, precipitation is still likely to fall as all snow initially, causing some travel impacts, especially with surface road temperatures likely cooling well below freezing Friday night, especially across northern New Jersey. Forecast soundings still suggest that the transition tendency of this storm will favor sleet over freezing rain with there being too shallow of a cold layer and sufficient enough warm air advection once precipitation does transition for freezing rain occur. Current guidance suggests most locations will see a transition to sleet, aside from the Poconos, where precipitation may stay all snow, or just about. Continue the trend from the previous forecast cycle with a sharpened gradient of snow totals, with generally 1 inch or less amounts in the urban corridor southeastward into south Jersey and northern Delmarva, to 1-3 inches near and just northwest of the Fall Line, to 3-5 inches generally northwest of a Reading to Morristown line. With warming surface temperatures, expect general rain southeast of the Fall Line by Saturday evening. Overall, this looks to be a bourgeoisie snow event in terms of impacts. Moving into Sunday, conditions will clear out with wind being the big storyline. Conditions don't look as cutthroat as today, but we could see gusts up to 30 mph possible. Highs will be a bit cooler in the mid to upper 30s north and west of the I-95 Corridor and low 40s south and east. Cold and dry weather will then transition to the main headline as we head into next week as an arctic high builds southward in the wake of this weekend's storm system. Highs look to sit at more seasonable values in the low to mid 30s Monday and Tuesday, moderating to the upper 30s Wednesday and Thursday. The ECMWF still continues to warm us a little faster than some of the other guidance, but tended to go with a blended approach leaning towards a slightly colder bias given the trends leading up to this event in previous forecast cycles. && .AVIATION /03Z FRIDAY THROUGH TUESDAY/... The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas. Tonight...VFR. Any lingering snow or rain showers will end by 04Z. W- NW winds 15-25 KT with gusts up to 35 KT. Friday... VFR. W-NW winds 15-20 KT with 25-30 KT gusts. High confidence. OUTLOOK... Saturday...VFR conditions in the morning will rapidly deteriorate as precipitation moves into the region, likely starting as snow before transitioning to a mix of rain and snow, especially from the Philly terminals south. Sub-VFR conditions are anticipated throughout the remainder of the day as precipitation coverage increases. Light and variable winds turning southerly from 5 to 15 knots with gusts to 20 knots. There is the possibility for LLWS as well. Moderate confidence. Saturday night...An extended period of sub-VFR conditions is expected through Saturday night as a transition to all rain occurs across the terminals. Sub-VFR conditions are likely throughout the night. Southerly winds turning southwesterly from 10 to 15 knots with gusts approaching 20 knots. Moderate confidence. Sunday...Lingering sub-VFR conditions will improve to VFR throughout the morning as all precipitation moves offshore. Westerly to northwesterly winds from 15 to 20 knots with gusts approaching 30 knots. High confidence. Monday...VFR with northwest winds 10 to 20 knots dropping to 5 to 10 knots Monday night. High confidence. Tuesday...VFR conditions with northwest winds 5 to 15 knots. High confidence. && .MARINE... The Gale Warning remains in effect for our marine zones and expect widespread NW gusts of 35-40kts to continue through much of the overnight period. Winds will begin to relax tomorrow morning after about 12-15Z, with seas also relaxing through the day tomorrow. That being said will likely need an SCA for a few hours after the Gale Warning expires as gusts will remain over 25kts and seas likely over 5 ft. By late tomorrow afternoon expect that we should be free of (on-going) marine headlines. OUTLOOK... Saturday...Southerly winds increasing to advisory level during the afternoon with the potential for gusts to near gale force by Saturday night. Seas building from 2 to 4 feet Saturday morning to 4 to 7 feet by Saturday night. Sunday...SCA-level wind gusts out of the southwest turning westerly through the morning. Seas from 4 to 7 feet to 3 to 5 feet. Monday...SCA-level wind gusts out of the northwest possible early Monday morning will drop below advisory criteria into the daytime hours with gusts from 15 to 20 knots. Seas from 2 to 4 feet. Tuesday...Sub-SCA level winds from 15 to 20 knots with seas from 1 to 3 feet. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...None. NJ...None. DE...None. MD...None. MARINE...Gale Warning until 10 AM EST Friday for ANZ430-431-450>455. && Synopsis...Davis Near Term...Carr/Robertson Short Term...Carr Long Term...Davis Aviation...Carr/Davis/MPS Marine...Carr/Davis
Hazardous weather outlook, Jan 16, 11:20 PM EST, 4 hours 17 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 1120 PM EST Thu Jan 16 2020 NJZ001-007>010-012-015-PAZ054-055-060>062-101>106-180430- Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-Carbon- Monroe-Berks-Lehigh-Northampton-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- 1120 PM EST Thu Jan 16 2020 This Hazardous Weather Outlook is for central New Jersey, northern New Jersey, northwest New Jersey, east central Pennsylvania, northeast Pennsylvania and southeast Pennsylvania. .DAY ONE...Tonight. There is a low probability for widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. An accumulating snow is expected on Saturday. The snow is forecast to change to a wintry mix late Saturday afternoon into Saturday night. Some locations, mainly in the valleys, could go over to all rain at that time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. DEZ001>004-MDZ008-012-015-019-020-NJZ013-014-016>027-PAZ070-071- 180430- New Castle-Kent-Inland Sussex-Delaware Beaches-Cecil-Kent MD- Queen Annes-Talbot-Caroline-Western Monmouth-Eastern Monmouth-Salem- Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland-Atlantic- Cape May-Atlantic Coastal Cape May-Coastal Atlantic-Coastal Ocean- Southeastern Burlington-Delaware-Philadelphia- 1120 PM EST Thu Jan 16 2020 This Hazardous Weather Outlook is for central Delaware, northern Delaware, southern Delaware, northeast Maryland, central New Jersey, southern New Jersey and southeast Pennsylvania. .DAY ONE...Tonight. There is a low probability for widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. A light accumulating snow is expected on Saturday. The snow is forecast to change to a wintry mix, then to all rain on Saturday afternoon. There remains some uncertainty regarding the timing of precipitation changeover and the snowfall amounts, with the higher snowfall totals likely being across southeast Pennsylvania. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. ANZ430-431-450>455-180430- 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- 1120 PM EST Thu Jan 16 2020 ...GALE WARNING IN EFFECT UNTIL 10 AM EST FRIDAY... This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...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...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. Gale force wind gusts from the northwest are possible on Sunday. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
In the hours before
Local storm report, Jan 16, 10:59 PM EST, 4 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1059 PM EST THU JAN 16 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0920 AM NON-TSTM WND DMG 1 S SLATINGTON 40.74N 75.61W
01/16/2020 LEHIGH PA UTILITY COMPANY
DOWNED TREE AND WIRES FROM STRONG WINDS.
0940 AM NON-TSTM WND DMG 2 SSW MAHONING TWP 40.79N 75.76W
01/16/2020 CARBON PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS.
1130 AM NON-TSTM WND DMG WEST WYOMISSING 40.33N 75.99W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS.
1140 AM NON-TSTM WND DMG 1 N WEST ROCKHILL TWP 40.39N 75.35W
01/16/2020 BUCKS PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
1210 PM NON-TSTM WND DMG WYOMISSING 40.33N 75.96W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS.
0150 PM NON-TSTM WND DMG 1 SSW HAYCOCK TWP 40.47N 75.25W
01/16/2020 BUCKS PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0209 PM NON-TSTM WND DMG 1 ESE DENVILLE 40.85N 74.47W
01/16/2020 MORRIS NJ DEPT OF HIGHWAYS
DOWNED TREE ON STATE HIGHWAY 53 NEAR STATE
HIGHWAY 10. SEVERAL LANES WERE CLOSED.
0210 PM NON-TSTM WND DMG 2 S BERN TWP 40.37N 76.00W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0230 PM NON-TSTM WND DMG 1 ENE SINKING SPRING 40.33N 76.01W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0300 PM NON-TSTM WND DMG BOSSARDSVILLE 40.93N 75.27W
01/16/2020 MONROE PA UTILITY COMPANY
SEVERAL REPORTS OF DOWNED TREE LIMBS AND
POWER LINES EAST OF SCIOTA, ESPECIALLY NEAR
CHERRY VALLEY ROAD. TIME ESTIMATED.
0300 PM NON-TSTM WND DMG EAST STROUDSBURG 40.99N 75.18W
01/16/2020 MONROE PA UTILITY COMPANY
SEVERAL REPORTS OF DOWNED POWER LINES IN THE
EAST STROUDSBURG AREA. TIME ESTIMATED.
0300 PM NON-TSTM WND DMG 1 WSW ERWINNA 40.50N 75.09W
01/16/2020 BUCKS PA UTILITY COMPANY
DOWNED POWER LINES NEAR TETTEMER ROAD. TIME
ESTIMATED.
0317 PM NON-TSTM WND DMG 2 NW SCIOTA 40.95N 75.33W
01/16/2020 MONROE PA DEPT OF HIGHWAYS
DOWNED TREE NEAR THE INTERSECTION OF NEOLA
ROAD AND SPRUCE WOODS ROAD.
0320 PM NON-TSTM WND DMG 2 E CLAUSSVILLE 40.61N 75.62W
01/16/2020 LEHIGH PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0340 PM NON-TSTM WND DMG 2 SSE BERN TWP 40.37N 75.98W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0400 PM NON-TSTM WND DMG 1 NW PLAINFIELD TWP 40.81N 75.28W
01/16/2020 NORTHAMPTON PA UTILITY COMPANY
DOWNED POWER LINES NEAR CHURCH ROAD. TIME
ESTIMATED.
0400 PM NON-TSTM WND DMG 1 NNE NEFFS 40.71N 75.60W
01/16/2020 LEHIGH PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0400 PM NON-TSTM WND DMG 1 E LENAPE 39.91N 75.62W
01/16/2020 CHESTER PA UTILITY COMPANY
DOWNED TREES AND WIRES NEAR COUNTRY CLUB
ROAD. TIME ESTIMATED.
0400 PM NON-TSTM WND DMG 1 WNW BIRDSBORO 40.27N 75.83W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED TREES AND WIRES NEAR SCHUYLKILL RIVER
TRAIL. TIME ESTIMATED.
0400 PM NON-TSTM WND DMG 2 WSW LORANE 40.28N 75.90W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED TREES AND WIRES NEAR RIDGEWAY ROAD.
TIME ESTIMATED.
0400 PM NON-TSTM WND DMG 2 SW MOHNTON 40.27N 76.01W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED WIRES IN SEVERAL LOCATIONS NEAR
GOUGLERSVILLE ROAD AND BEAVENS ROAD. TIME
ESTIMATED.
0400 PM NON-TSTM WND DMG LENHARTSVILLE 40.58N 75.89W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED POWER LINES REPORTED OUTSIDE THE
LENHARTSVILLE AREA. TIME ESTIMATED.
0440 PM NON-TSTM WND DMG 1 WNW LOWER SAUCON TWP 40.61N 75.30W
01/16/2020 NORTHAMPTON PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS.
0500 PM NON-TSTM WND DMG 1 W PLYMOUTH MEETING 40.10N 75.29W
01/16/2020 MONTGOMERY PA UTILITY COMPANY
DOWNED TREES AND WIRES NEAR KINGS ROAD. TIME
ESTIMATED.
0500 PM NON-TSTM WND DMG NEW TRIPOLI 40.68N 75.75W
01/16/2020 LEHIGH PA UTILITY COMPANY
DOWNED POWER LINES IN THE NEW TRIPOLI AREA.
TIME ESTIMATED.
0500 PM NON-TSTM WND DMG 1 ENE THORNTON 39.92N 75.47W
01/16/2020 DELAWARE PA UTILITY COMPANY
DOWNED TREES AND WIRES NEAR NEW DARLINGTON
ROAD. TIME ESTIMATED.
0500 PM NON-TSTM WND DMG 2 SE LAURELDALE 40.37N 75.90W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED TREES AND WIRES NEAR BILMAR ROAD.
TIME ESTIMATED.
0500 PM NON-TSTM WND DMG 2 N KUTZTOWN 40.54N 75.78W
01/16/2020 BERKS PA UTILITY COMPANY
DOWNED TREES AND WIRES NEAR GUN CLUB ROAD.
TIME ESTIMATED.
0610 PM NON-TSTM WND DMG 1 NW UPPER HANOVER TWP 40.42N 75.53W
01/16/2020 MONTGOMERY PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0616 PM NON-TSTM WND DMG 1 NNE ASHLAND 39.82N 75.65W
01/16/2020 NEW CASTLE DE DEPT OF HIGHWAYS
DOWNED TREE AND WIRES NEAR SNUFF MILL ROAD
AND OLD KENNETT ROAD. ROAD CLOSURES IN
PLACE.
0710 PM NON-TSTM WND DMG 1 WNW GERMANSVILLE 40.71N 75.72W
01/16/2020 LEHIGH PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0830 PM NON-TSTM WND DMG 2 W SCOTRUN 41.06N 75.36W
01/16/2020 MONROE PA UTILITY COMPANY
DOWNED TREES AND WIRES FROM STRONG WINDS.
0940 PM NON-TSTM WND DMG 4 NNW TOBYHANNA TWP 41.17N 75.57W
01/16/2020 MONROE PA UTILITY COMPANY
DOWNED POWER LINES FROM STRONG WINDS.
&&
CMSLocal storm report, Jan 16, 11:02 PM EST, 4 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1102 PM EST THU JAN 16 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0137 PM NON-TSTM WND DMG 1 N WEST HADDONFIELD 39.91N 75.04W
01/16/2020 CAMDEN NJ PUBLIC
DOWNED TREE LIMBS FROM STRONG WINDS. REPORT
VIA MPING.
&&
CMSThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 10:00 AM EST | Small Craft Advisory | PHI | 11 hr |
Nearby
Winter Weather Advisories in New Jersey, 2020Winter Weather Advisories in Pennsylvania, 2020Winter Weather Advisories in Maryland, 2020Every winter weather advisory in 2020
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.