Alert archive / New Jersey / Winter Weather Advisories in 2018
Winter Weather Advisory 17, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter weather advisory at Apr 1, 2018, 4:08 AM EDT for 4 states. It took effect at Apr 2, 2018, 12:00 AM EDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Apr 1, 2018, 4:08 AM EDT (08:08 UTC)
- In effect from
- Apr 2, 2018, 12:00 AM EDT
- Expired
- Apr 2, 2018, 1:00 PM EDT
- In force
- 13 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 25 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, Monmouth County, NJ, Morris County, NJ, Ocean 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), 70 km from the middle of the area, began a volume at 08:11 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, 8.1 hours before the alert went out and 200 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
- 2578 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 181 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
657 WWUS41 KPHI 010808 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 408 AM EDT Sun Apr 1 2018 ...Early Spring Snow Expected Tonight through Monday Morning... NJZ001-007>010-012>015-PAZ054-055-060>062-103-105-106-012015- /O.NEW.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Carbon-Monroe-Berks- Lehigh-Northampton-Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 408 AM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches are expected. Up to 6 inches possible in a few spots. * WHERE...Portions of central, northern and northwest New Jersey and east central, northeast and southeast Pennsylvania. * WHEN...From midnight tonight to 1 PM EDT Monday. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the morning commute on Monday. Expect reduced visibilities at times. High temperatures in the 40s will lead to rapid melt during the afternoon and early evening hours on Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect 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. Highest accumulations expected on grassy surfaces. && $$ NJZ019-PAZ070-071-101-102-104-012015- /O.NEW.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ Northwestern Burlington-Delaware-Philadelphia-Western Chester- Eastern Chester-Eastern Montgomery- Including the cities of Moorestown, Mount Holly, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Norristown, and Lansdale 408 AM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Wet snow expected. Total wet snow accumulations of 2 to 4 inches are expected. * WHERE...Portions of southern New Jersey and southeast Pennsylvania. * WHEN...From midnight tonight to 1 PM EDT Monday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning commute on Monday. Expect reduced visibilities at times. Precipitation may start out as rain, but will quickly become a wintry mix before changing to all snow. Snow then continues through Monday morning. High temperatures in the 40s will lead to rapid melt during the afternoon and early evening hours on Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Highest accumulations expected on grassy surfaces. && $$ DEZ001-MDZ008-NJZ016>018-020-026-027-012015- /O.NEW.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ New Castle-Cecil-Salem-Gloucester-Camden-Ocean-Coastal Ocean- Southeastern Burlington- Including the cities of Wilmington, Elkton, Pennsville, Glassboro, Camden, Cherry Hill, Jackson, Long Beach Island, and Wharton State Forest 408 AM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Wet snow expected. Total wet snow accumulations of up to 2 inches are expected. * WHERE...Portions of southern New Jersey, northeast Maryland and northern Delaware. * WHEN...From midnight tonight to 1 PM EDT Monday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning commute on Monday. Expect reduced visibilities at times. High temperatures in the 40s will lead to rapid melt during the afternoon and early evening hours on Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect 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
8 follow-up statements
031 WWUS41 KPHI 011337 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 937 AM EDT Sun Apr 1 2018 ...Early Spring Snowfall Expected late tonight and Monday Morning... NJZ001-007>010-012>015-PAZ054-055-060>062-103-105-106-020145- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Carbon-Monroe-Berks- Lehigh-Northampton-Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 937 AM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches are expected, with locally 6 inches possible. * WHERE...Portions of central and northern New Jersey, as well as eastern Pennsylvania. * WHEN...A brief wintry mix in some areas develops and quickly changes to snow between about Midnight and 3 AM Monday, then snow continues moderate to potentially heavy at times during the morning before tapering off around midday. Snowfall rates of 1 to 2 inches per hour may occur at times between about 4 AM and 9 AM Monday. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the Monday morning commute. Expect reduced visibilities at times. The snowfall rates will significantly affect how much snow accumulates on roadways, as rates at or greater than an inch per hour with temperatures near freezing will result in untreated roads becoming slushy to snow covered. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving especially on bridges and overpasses. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ019-PAZ070-071-101-102-104-020145- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ Northwestern Burlington-Delaware-Philadelphia-Western Chester- Eastern Chester-Eastern Montgomery- Including the cities of Moorestown, Mount Holly, Media, Philadelphia, Honey Brook, Oxford, West Chester, Kennett Square, Norristown, and Lansdale 937 AM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Wet snow expected. Total wet snow accumulations of 2 to 4 inches are expected. * WHERE...Portions of southern New Jersey and southeast Pennsylvania. * WHEN...Rain or a wintry mix is expected to develop between Midnight and 3 AM Monday then quickly change to wet snow. Wet snow will continue Monday morning and become moderate to potentially heavy at times, then taper off around midday. Snowfall rates of 1 to 2 inches per hour at times may occur between about 5 AM and 10 AM. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the Monday morning commute. Expect reduced visibilities at times. The snowfall rates will significantly affect how much snow accumulates on roadways, as rates at or greater than an inch per hour with temperatures closer to freezing will result in untreated roads becoming slushy to snow covered. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving especially on bridges and overpasses. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ DEZ001-MDZ008-NJZ016>018-020-026-027-020145- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ New Castle-Cecil-Salem-Gloucester-Camden-Ocean-Coastal Ocean- Southeastern Burlington- Including the cities of Wilmington, Elkton, Pennsville, Glassboro, Camden, Cherry Hill, Jackson, Long Beach Island, and Wharton State Forest 937 AM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Wet snow expected. Total wet snow accumulations of up to 2 inches are expected. * WHERE...Portions of southern New Jersey, northeast Maryland and northern Delaware. * WHEN...Rain or a wintry mix develops between about Midnight and 3 AM Monday then quickly changes to wet snow. The wet snow continues Monday morning before tapering off around midday. Snowfall rates of an inch per hour may occur at times between about 5 AM and 10 AM. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the Monday morning commute. Expect reduced visibilities at times. The snowfall rates and temperatures will significantly affect how much snow accumulates on roadways, as rates at or greater than an inch per hour if temperatures drop closer to freezing would result in untreated roads becoming slushy to at times snow covered. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving especially on bridges and overpasses. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit www.weather.gov/phi/winter Gorse
309 WWUS41 KPHI 011958 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 358 PM EDT Sun Apr 1 2018 ...Early Spring Snowfall Expected late tonight and Monday Morning... NJZ001-007>010-012>015-PAZ054-055-060>062-101-103-105-106-020800- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Carbon-Monroe-Berks- Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 358 PM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches are expected. Isolated amounts of 6 inches possible. * WHERE...Portions of central, northern and northwest New Jersey and east central, northeast and southeast Pennsylvania. * WHEN...A brief wintry mix in some areas develops and quickly changes to snow between about Midnight and 3 AM Monday, then snow continues moderate to potentially heavy at times during the morning before tapering off around midday. Snowfall rates of 1 to 2 inches per hour may occur at times between about 4 AM and 9 AM Monday. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the morning commute on Monday. Expect reduced visibilities at times. The snowfall rates will significantly affect how much snow accumulates on roadways, as rates at or greater than an inch per hour with temperatures near freezing will result in untreated roads becoming slushy to snow covered. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect 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. && $$ NJZ019-PAZ070-071-102-104-020800- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery- Including the cities of Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, and Lansdale 358 PM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Wet snow expected. Total wet snow accumulations of 1 to 3 inches are expected. * WHERE...Portions of southern New Jersey and southeast Pennsylvania. * WHEN...Rain or a wintry mix is expected to develop between Midnight and 3 AM Monday then quickly change to wet snow. Wet snow will continue Monday morning and become moderate to potentially heavy at times, then taper off around midday. Snowfall rates of 1 to 2 inches per hour at times may occur between about 5 AM and 10 AM. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning commute on Monday. Expect reduced visibilities at times. The snowfall rates will significantly affect how much snow accumulates on roadways, as rates at or greater than an inch per hour with temperatures near freezing will result in untreated roads becoming slushy to snow covered. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ DEZ001-MDZ008-NJZ016>018-020-026-027-020800- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ New Castle-Cecil-Salem-Gloucester-Camden-Ocean-Coastal Ocean- Southeastern Burlington- Including the cities of Wilmington, Elkton, Pennsville, Glassboro, Camden, Cherry Hill, Jackson, Long Beach Island, and Wharton State Forest 358 PM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Wet snow expected. Total wet snow accumulations of up to 2 inches are expected. * WHERE...Rain or a wintry mix develops between about Midnight and 3 AM Monday then quickly changes to wet snow. The wet snow continues Monday morning before tapering off around midday. Snowfall rates of an inch per hour may occur at times between about 5 AM and 10 AM. * WHEN...From midnight tonight to 1 PM EDT Monday. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning commute on Monday. Expect reduced visibilities at times. The snowfall rates and temperatures will significantly affect how much snow accumulates on roadways, as rates at or greater than an inch per hour if temperatures drop closer to freezing would result in untreated roads becoming slushy to at times snow covered. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect 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
963 WWUS41 KPHI 020103 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 903 PM EDT Sun Apr 1 2018 ...A quick-hitting snow event to impact the Monday morning commute... NJZ001-007>010-012>015-PAZ054-055-060>062-101-103-105-106-021315- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Carbon-Monroe-Berks- Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 903 PM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches with isolated amounts of 6 inches possible in the higher elevations of northeastern Pennsylvania and northwestern New Jersey. * WHERE...Portions of central and northwestern New Jersey and eastern Pennsylvania. * WHEN...Precipitation overspreading the area from west to east between 2 AM and 4 AM will begin as snow in the higher elevations of northeastern Pennsylvania and northwestern New Jersey. Elsewhere, precipitation will begin as rain or a rain/snow mix but transition to wet snow from northwest to southeast between 3 AM and 6 AM. The snow will be heavy at times with snowfall rates of 1 to 2 inches per hour between about 4 AM and 9 AM. The snow tapers off from west to east between 9 AM and 11 AM Monday morning. * ADDITIONAL DETAILS...Plan on difficult travel conditions, including during the morning commute on Monday. Expect poor visibilities below one-half mile at times in heavy snow. Road conditions will be highly dependent on snowfall rates and elevation as rates greater than 1 inch per hour and slightly colder temperatures in the hilly terrain will allow for untreated roads to become snow covered. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect 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. && $$ NJZ019-PAZ070-071-102-104-021315- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery- Including the cities of Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, and Lansdale 903 PM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Wet snow expected. Total snow accumulations of 1 to 3 inches with the highest amounts generally north and west of Center City, Philadelphia. * WHERE...Portions of southwestern New Jersey and southeastern Pennsylvania. * WHEN...Rain, possibly mixing in with snow, will overspread the area from west to east between 2 AM and 4 AM, then transition to a heavy wet snow from northwest to southeast between 4 AM and 6 AM. There is a potential for sleet to mix in across the southern and eastern suburbs of Philadelphia. Otherwise, the snow will be moderate to heavy with snowfall rates of around 1 inch per hour possible at times between about 5 AM and 8 AM. The snow tapers off from west to east between 9 AM and 11 AM Monday morning. * ADDITIONAL DETAILS...Plan on travel delays for the morning commute with poor visibility below one-half mile at times in bursts of heavy snow. Road conditions will be highly dependent on snowfall rates as rates greater than 1 inch per hour could allow for a slushy accumulation on untreated secondary roads. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect 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. && $$ DEZ001-MDZ008-NJZ016>018-020-026-027-021315- /O.CON.KPHI.WW.Y.0017.180402T0400Z-180402T1700Z/ New Castle-Cecil-Salem-Gloucester-Camden-Ocean-Coastal Ocean- Southeastern Burlington- Including the cities of Wilmington, Elkton, Pennsville, Glassboro, Camden, Cherry Hill, Jackson, Long Beach Island, and Wharton State Forest 903 PM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... * WHAT...Wet snow and sleet expected. Total snow and sleet accumulations around 1 inch with isolated higher amounts up to 2 inches possible. * WHERE...Far northeastern Maryland and northern Delaware and portions of southern New Jersey. * WHEN...Rain will overspread the area between 2 AM and 5 AM, then transition to a mix of sleet and wet snow from west to east between 5 AM and 8 AM. The snow will be moderate to heavy at times with snowfall rates of up to 1 inch per hour possible briefly between about 6 AM and 9 AM. The snow tapers off from west to east between 9 AM and 11 AM Monday morning. * ADDITIONAL DETAILS...Plan on travel delays for the morning commute with poor visibility of one-half mile or less at times in bursts of heavier snow. Road conditions will be highly dependent on precipitation rates as snowfall rates greater than 1 inch per hour and steadier sleet could allow for a slushy accumulation on untreated secondary roads. High temperatures Monday afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow and sleet will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit www.weather.gov/phi/winter Klein
640 WWUS41 KPHI 020747 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 347 AM EDT Mon Apr 2 2018 ...A quick-hitting snow event to impact the morning commute... NJZ001-007>010-012>015-PAZ054-055-060>062-101-103-105-106-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Carbon-Monroe-Berks- Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 347 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Snow occurring. Additional snow accumulations of 3 to 5 inches, with isolated amounts of 6 inches in the higher elevations of the southern Poconos and northwest New Jersey, are expected. * WHERE...Portions of central, northern and northwest New Jersey and east central, northeast and southeast Pennsylvania. * WHEN...Snow has begun in the southern Poconos, far northern New Jersey, and portions of the Lehigh Valley. Rain will spread into the rest of the area by 5 am before quickly changing to snow. Snow will become moderate to heavy at times through the morning commute before tapering off late this morning. * ADDITIONAL DETAILS...Plan on very difficult travel conditions, including during this morning's commute. Expect poor visibilities below one-half mile at times in heavy snow. Road conditions will be highly dependent on snowfall rates and elevation as rates greater than one inch per hour and slightly colder temperatures in the hilly terrain will allow for untreated roads to become snow covered. High temperatures this afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect 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. && $$ NJZ019-PAZ070-071-102-104-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery- Including the cities of Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, and Lansdale 347 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Wet snow expected. Additional wet snow accumulations of up to 2 inches are expected. * WHERE...Portions of southern New Jersey and southeast Pennsylvania. * WHEN...Rain will spread across the area through 5 am before transitioning to a wintry mix or all snow during the morning commute. Snow may become moderate to heavy at times before tapering off in the late morning hours. * ADDITIONAL DETAILS...Plan on travel delays for the morning commute, with poor visibility below one-half mile at times in bursts of heavy snow. Road conditions will be highly dependent on snowfall rates as rates greater than one inch per hour could allow for a slushy accumulation on untreated secondary roads. High temperatures this afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ DEZ001-MDZ008-NJZ016>018-020-026-027-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ New Castle-Cecil-Salem-Gloucester-Camden-Ocean-Coastal Ocean- Southeastern Burlington- Including the cities of Wilmington, Elkton, Pennsville, Glassboro, Camden, Cherry Hill, Jackson, Long Beach Island, and Wharton State Forest 347 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Wet snow and sleet expected. Additional wet snow accumulations of up to two inches are expected. * WHERE...Portions of southern New Jersey, northeast Maryland and northern Delaware. * WHEN...Rain will overspread the area through 5 am before transitioning to a wintry mix during the morning commute. Bursts of heavier sleet and snow may occur between 5 am and 9 am before tapering off late this morning. * ADDITIONAL DETAILS...Plan on travel delays for the morning commute, with poor visibility of one-half mile or less at times in bursts of heavier sleet and snow. Road conditions will be highly dependent on precipitation rates and precipitation type, as snowfall rates greater than one inch per hour and steadier sleet could allow for a slushy accumulation on untreated secondary roads. High temperatures this afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect 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. && $$ For more information from the National Weather Service visit www.weather.gov/phi/winter CMS
062 WWUS41 KPHI 020941 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 541 AM EDT Mon Apr 2 2018 ...A quick-hitting snow event to impact the morning commute... DEZ001-MDZ008-NJZ016-021045- /O.CAN.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ New Castle-Cecil-Salem- Including the cities of Wilmington, Elkton, and Pennsville 541 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Although precipitation may switch over to a wintry mix for a time this morning, impacts to travel are expected to be minor. Therefore, the winter weather advisory has been cancelled. $$ NJZ001-007>010-012>015-PAZ054-055-060>062-101-103-105-106-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Carbon-Monroe-Berks- Lehigh-Northampton-Western Chester-Western Montgomery-Upper Bucks- Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 541 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Snow occurring. Additional snow accumulations of 3 to 5 inches are expected, with locally higher totals in the higher elevations of the southern Poconos and northwest New Jersey. * WHERE...Portions of central, northern and northwest New Jersey and east central, northeast and southeast Pennsylvania. * WHEN...Snow is now occurring in most of the advisory area, with any remaining rain expected to change over by 6 am. A band of heavy snow has developed in much of the Lehigh Valley northeastward into northern New Jersey, with more heavy snow likely to occur in the southern Poconos in the next couple of hours. Snow will remain moderate to heavy at times through the morning commute before tapering off late this morning. * ADDITIONAL DETAILS...Plan on very difficult travel conditions, including during this morning's commute. Expect poor visibilities below one-half mile at times in heavy snow. Road conditions will be highly dependent on snowfall rates and elevation as rates greater than one inch per hour and slightly colder temperatures in the hilly terrain will allow for untreated roads to become snow covered. High temperatures this afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect 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. && $$ NJZ019-PAZ070-071-102-104-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Northwestern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery- Including the cities of Moorestown, Mount Holly, Media, Philadelphia, West Chester, Kennett Square, Norristown, and Lansdale 541 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...A wintry mix expected. Additional wet snow accumulations of up to 2 inches are expected. * WHERE...Portions of southern New Jersey and southeast Pennsylvania. * WHEN...Rain will transition to a wintry mix of sleet and wet snow during the morning commute. Burst of heavier sleet and snow may occur between now and 10 am before tapering off late this morning. * ADDITIONAL DETAILS...Plan on travel delays for the morning commute, with poor visibility below one-half mile at times in bursts of heavy snow. Road conditions will be highly dependent on snowfall rates as rates near one inch per hour could allow for a slushy accumulation on untreated secondary roads. High temperatures this afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ017-018-020-026-027-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Gloucester-Camden-Ocean-Coastal Ocean-Southeastern Burlington- Including the cities of Glassboro, Camden, Cherry Hill, Jackson, Long Beach Island, and Wharton State Forest 541 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...A wintry mix expected. Additional wet snow accumulations of up to two inches are expected. * WHERE...Portions of southern New Jersey. * WHEN...Rain will mix with snow and sleet at times this morning. Heavier bursts of sleet and snow may quickly accumulate on grassy surfaces, but little accumulation is expected on pavement. Precipitation should taper off by midday. * ADDITIONAL DETAILS...Plan on travel delays for the morning commute, with poor visibility of one-half mile or less at times in bursts of heavier sleet and snow. Road conditions are expected to be mostly wet. However, if heavier bursts of sleet and snow occur, slushy accumulations may occur on untreated roads. High temperatures this afternoon in the 40s will lead to rapid melting. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect 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. && $$ For more information from the National Weather Service visit www.weather.gov/phi/winter CMS
682 WWUS41 KPHI 021338 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 938 AM EDT Mon Apr 2 2018 PAZ060-101-021445- /O.CAN.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Berks-Western Chester- Including the cities of Reading, Honey Brook, and Oxford 938 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has ended across the area so the advisory has been cancelled. $$ NJZ001-007>010-012>015-PAZ054-055-061-062-103-105-106-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Carbon-Monroe-Lehigh- Northampton-Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Jim Thorpe, Stroudsburg, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 938 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations of up to an inch. * WHERE...Portions of central, northern and northwest New Jersey and east central, northeast and southeast Pennsylvania. * WHEN...Until 1 PM EDT this afternoon. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning commute. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for snow means periods of snow will cause primarily travel difficulties. Expect 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. && $$ NJZ019-PAZ104-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Northwestern Burlington-Eastern Montgomery- Including the cities of Moorestown, Mount Holly, Norristown, and Lansdale 938 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Wet snow. Additional wet snow accumulations of up to one inch are expected. * WHERE...In New Jersey, Northwestern Burlington county. In Pennsylvania, Eastern Montgomery county. * WHEN...Until 1 PM EDT this afternoon. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning commute. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ020-026-027-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Ocean-Coastal Ocean-Southeastern Burlington- Including the cities of Jackson, Long Beach Island, and Wharton State Forest 938 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Snow, mixed at times with rain. Additional wet snow accumulations of up to one inch are expected. * WHERE...Ocean, Coastal Ocean and Southeastern Burlington counties. * WHEN...Until 1 PM EDT this afternoon. * ADDITIONAL DETAILS...Plan on slippery road conditions, including during the morning commute. Expect reduced visibilities at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect 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. && $$ For more information from the National Weather Service visit www.weather.gov/phi/winter
347 WWUS41 KPHI 021402 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 1002 AM EDT Mon Apr 2 2018 PAZ054-055-061-062-103>106-021515- /O.CAN.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Carbon-Monroe-Lehigh-Northampton-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Jim Thorpe, Stroudsburg, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 1002 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has ended so the advisory has been cancelled. $$ NJZ001-007>010-012>015-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, and Trenton 1002 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Wet snow. Additional wet snow accumulations of up to one inch. * WHERE...Portions of central, northern and northwest New Jersey. * WHEN...Snow will taper off west to east by early this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect 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. && $$ NJZ019-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Northwestern Burlington- Including the cities of Moorestown and Mount Holly 1002 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Wet snow. Additional wet snow accumulations of up to a half inch are expected. * WHERE...Northwestern Burlington county. * WHEN...Snow will quickly come to an end west to east by early this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory for wet snow means periods of wet snow will cause primarily travel difficulties. Expect snow covered roads and limited visibilities, and use caution while driving. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ020-026-027-021700- /O.CON.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Ocean-Coastal Ocean-Southeastern Burlington- Including the cities of Jackson, Long Beach Island, and Wharton State Forest 1002 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... * WHAT...Snow, mixed at times with rain. Additional wet snow accumulations of up to one inch are expected. * WHERE...Ocean, Coastal Ocean and Southeastern Burlington counties. * WHEN...Snow will quickly come to an end west to east by early this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Winter Weather Advisory means that periods of snow, sleet or freezing rain will cause travel difficulties. Expect 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. && $$ For more information from the National Weather Service visit www.weather.gov/phi/winter
840 WWUS41 KPHI 021512 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 1112 AM EDT Mon Apr 2 2018 NJZ001-007>010-012>015-019-020-026-027-021615- /O.CAN.KPHI.WW.Y.0017.000000T0000Z-180402T1700Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Northwestern Burlington- Ocean-Coastal Ocean-Southeastern Burlington- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Sandy Hook, Trenton, Moorestown, Mount Holly, Jackson, Long Beach Island, and Wharton State Forest 1112 AM EDT Mon Apr 2 2018 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has ended so the advisory has been cancelled. $$ 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 Mar 31, 9:25 PM EDT, 6 hours 43 minutes earlier.
Area forecast discussion, Mar 31, 9:25 PM EDT, 6 hours 43 minutes before
Area Forecast Discussion National Weather Service Mount Holly NJ 925 PM EDT Sat Mar 31 2018 .SYNOPSIS... A weak cold front will move into the region tomorrow morning, before stalling just south of the region by Monday morning. A surface low will propagate east along the front Sunday night into Monday morning. A storm system will slowly progress through the region for the mid-week period, pushing a warm front north on Tuesday followed by a strong cold front late Wednesday. High pressure then briefly passes through the region late in the new week. && .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/... 930 pm update: Aside from some minor changes to hourly temperatures and dew points to account for trends in observations this evening, forecast is in good shape. Made no significant changes at this time. Previous discussion... A nice afternoon in progress (for most) as surface high pressure continues to shift off the Mid-Atlantic coast, allowing for a southerly flow to occur. This southerly wind component though is a bit gusty especially along the coast and this is resulting in much cooler temperatures there. As we go through tonight, an upper-level trough is forecast to slide eastward across the Great Lakes and adjacent areas of Canada. This will drive surface low pressure well to our north, however the attached cold front will arrive into our western areas toward daybreak. There is some warm air advection ahead of this front, however the strongest short wave energy is well to our north as is the main lift. The airmass moistens some, however it looks to not be all that robust despite a 40-50 knot southwesterly low-level jet arriving later tonight. There is a short wave embedded in the southwest flow and timed near the low-level jet, however not sure how much lift can result in actual showers. We continued with some lower chance PoPs for showers across the west/northwest zones late tonight, with a mention of sprinkles into the I-95 corridor toward daybreak. Despite the lower dew points up across the Poconos especially, light intensity of the precipitation may result in just some light rain showers or sprinkles (if it were to precipitate to the surface). Otherwise, clouds increase and gradually lower from west to east through the night. This along with some southerly flow occurring (low-level jets arrival overnight) should keep temperatures from dropping real fast through the evening. Hourly temperatures and low temperatures are a multi-model and continuity blend. && .SHORT TERM /6 AM SUNDAY MORNING THROUGH 6 PM SUNDAY/... 930 pm update: I increased temperatures a little bit in the southeast half of the CWA based on latest hi-res and statistical output. Front may struggle to move through the area, and boundary-layer mixing may be sufficient to increase temperatures more than previously progged. Previous discussion... As an upper-level trough amplifies some from the Great Lakes, adjacent Canada and the Northeast, a surface cold front will gradually settle south and east across our region. This may not clear our far eastern and southern areas until later in the day or it may start to dissipate as it will be weakening to begin with. Looks like limited moisture with the front and the low-level jet will be shifting offshore early, thus there does not appear to be much in the way of forcing for organized ascent with it. As a result, we carried a mention of possible sprinkles for a time through mid morning from northwest to southeast. Cloud cover to start the day across much of the region should scatter out some from northwest to southeast as some drying starts to work in. Temperatures are a blend of mostly the 2-meter temperatures of several models as well as continuity. This places higher maximum temperatures in the coastal plain and Delmarva where boundary layer warmth should be maximized ahead of the weak cold front. A wind shift to the west-northwest will occur behind the weakening surface cold front with some increase especially late morning through the afternoon. && .LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/... Overview...Three main periods of potential active weather in the long term. First, there is the potential for accumulating snow of a few inches, across much of the area Sunday night into Monday morning as a low propagates east along a slow moving front. Tuesday into Wednesday, the region is likely to see two rounds of precipitation, mostly rain, as first a warm front lifts through our region Tuesday morning, with a cold front expected Wednesday morning. Finally late in the week, Friday night into Saturday, there is a chance for a fast moving clipper system to dig far enough south to bring precipitation to our region. Temperatures...aside from a 24 to 36 hour period Tuesday into Wednesday when our region will be in the warm sector, temperatures through the rest of the long term period look to be below normal. Sunday night and Monday...A low will be tracking along the very slow moving front. Depending on the model, this front is forecast to be either south of our region (as the GFS depicts) or in Delmarva, and far southeastern NJ (as depicted in the NAM). Placement of this front will be key to not only precipitation types, but snow amounts as well (snow ratios especially south of the I78 corridor could be very low on the order of 5:1). North of the front, many models depict an area of strong frontogenesis in the 09 to 15Z time frame, resulting in a window when mesoscale snow banding will be possible. The low however, is not expected to intensify or deepen until it propagates east of the area. While it is not an especially impressive low on the height fields at standard pressure levels, looking at the 1.5PV surface (dynamic tropopause), there appears to be strong positive pressure advection during the period. Snow amount forecast hasn't changed significantly, with generally 2 to 4 inches north and west of the fall line, 1 to 2 in the I95 corridor, quickly dropping below an inch south and east of I-95. If models trend closer to the NAM solution with stronger frontogenesis, the snow amounts may need to be increased along and north of the I78 corridor, while south of a Philly to Atlantic City line, this scenario would mean less snow, but more rain. Tuesday and Wednesday...complex low pressure system is forecast to propagate from the upper Mississippi Valley into New England. As it does so, the associated warm front is expected to arrive in our region Tuesday morning. The first round of precipitation (should be mostly rain except in the Poconos and NW NJ) will arrive ahead of and continue with the passage of the warm front. After that, it looks like our region will be in the prime location for the dry slot, if it develops, bringing at least several hours lull in precipitation (and a dramatic warming trend), before a second round of rain (all rain across the region) arrives with the approaching cold front Wednesday. Given the low level warm air advection we are expecting in the warm sector, should have enough instability for thunderstorms with this round as well. Thursday...surface high builds in bringing a brief opportunity for tranquil weather. Friday and Saturday...A clipper system digs southeast out of southern Canada. It could dig far enough south to bring another round of precipitation across our region, but there is considerable uncertainty with the track of the low. && .AVIATION /02Z SUNDAY THROUGH THURSDAY/... The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas. Tonight...VFR with CIGs developing/lowering in the next few hours as a cold front approaches the area. May see some showers near/northwest of RDG/ABE late tonight (perhaps a sprinkle elsewhere). CIGs drop to around 5000 feet in proximity to the front. Winds south to southwest 5 to 15 kts, with some occasional gusts to 20 kts or so, especially this evening. Directions will slowly transition to more westerly with time. Moderate confidence. Sunday...Generally VFR with CIGs 4000-7000 feet for most of the day before some potential for scattering out and cloud bases rising during the mid to late afternoon. May see a few sprinkles or even a couple showers in the morning, but not expecting impacts to aviation. Winds becoming west to northwest 10 to 15 kts with gusts to 20 kts or so possible as the cold front moves across the area. Moderate confidence. Outlook... Sunday night and Monday...MVFR/IFR conditions in rain and snow. Runway accumulations are possible especially for KRDG, KABE, and KTTN. Snow tapers off Monday morning, and VFR conditions return by Monday afternoon. North winds less than 10 kt. Moderate confidence. Monday night and Tuesday...Conditions lowering to MVFR or IFR late Monday night in rain. May see conditions raise to VFR by Tuesday morning. Winds shift to southerly behind a warm front. Moderate confidence. Tuesday night and Wednesday..Conditions lowering to MVFR or IFR, with possibly some low clouds late Tuesday night, then a round of showers, and possibly thunderstorms on Wednesday. Expect an abrupt shift to northwesterly winds on Wednesday. Low confidence. Thursday...VFR conditions expected. High confidence. && .MARINE... South to southwesterly flow will increase through tonight as a low- level jet arrives, however mixing should be limited to some extent. This will also boost the seas especially on the ocean where gusts later tonight should be in the 25-30 knot range (highest across the northern Atlantic coastal waters). A Small Craft Advisory remains in effect from late this evening through late Sunday afternoon. Given a more cross the bay direction, opted to not issue a Small Craft Advisory for Delaware Bay and go with winds of 20 knots or less. The winds will diminish during Sunday (especially afternoon) as they start to shift from the west or west-northwest. Outlook... Sunday night and Monday...SCA conditions develop late Sunday night through Monday afternoon, then conditions subside to sub- SCA levels late Monday. Tuesday through Thursday...SCA conditions late Tuesday and continue through the period. There is a slight chance for gale gusts especially Tuesday night and Wednesday morning. && .CLIMATE... With a cold and snowy March 2018 just about over, we have some preliminary climate numbers to show just how unusual this month has been. Keep in mind, these numbers are through March 29, but no snow fell on March 30, and accumulating snow is not expected prior to midnight tonight. Regarding snowfall: March 2018 is in the Top 5 snowiest Marches for all of our 4 snowfall climate sites. Allentown: 20.7" is the 4th snowiest March on record. Atlantic City: 9.6" is the is the 5th snowiest March on record. Philadelphia: 15.2" is a tie with March 1914 as the 2nd snowiest March on record. Wilmington: 14.2" is the 2nd snowiest March on record. In terms of average temperatures, although it has been generally below normal, it does not rank as one of the Top 10 coldest Marches on record. The first day of March and the last couple of days, in addition to what should happen today, will keep us out of that distinction. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...None. NJ...None. DE...None. MD...None. MARINE...Small Craft Advisory until 6 PM EDT Sunday for ANZ450>455. && Synopsis...Johnson Near Term...CMS/Gorse Short Term...CMS/Gorse Long Term...Johnson Aviation...CMS/Johnson Marine...Gorse/Johnson Climate...MPS
Hazardous weather outlook, Apr 1, 3:50 AM EDT, 18 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 350 AM EDT Sun Apr 1 2018 DEZ001-MDZ008-NJZ001-007>010-012>020-026-027-PAZ054-055-060>062-070- 071-101>106-020800- New Castle-Cecil-Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Eastern Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Coastal Ocean-Southeastern Burlington- Carbon-Monroe-Berks-Lehigh-Northampton-Delaware-Philadelphia- Western Chester-Eastern Chester-Western Montgomery- Eastern Montgomery-Upper Bucks-Lower Bucks- 350 AM EDT Sun Apr 1 2018 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 1 PM EDT MONDAY... This Hazardous Weather Outlook is for northern Delaware, northeast Maryland, central New Jersey, northern New Jersey, northwest New Jersey, southern New Jersey, east central Pennsylvania, northeast Pennsylvania and southeast Pennsylvania. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. Widespread accumulating snow late Sunday night through Monday morning will result in hazardous travel for the Monday morning commute. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed. DEZ002>004-MDZ012-015-019-020-NJZ021>025-020800- Kent-Inland Sussex-Delaware Beaches-Kent MD-Queen Annes-Talbot- Caroline-Cumberland-Atlantic-Cape May-Atlantic Coastal Cape May- Coastal Atlantic- 350 AM EDT Sun Apr 1 2018 This Hazardous Weather Outlook is for central Delaware, southern Delaware, northeast Maryland and southern New Jersey. .DAY ONE...Today and Tonight. There is a low probability for widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. ANZ430-431-450>455-020800- 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- 350 AM EDT Sun Apr 1 2018 This Hazardous Weather Outlook is for Atlantic coastal waters and Delaware Bay Waters. .DAY ONE...Today and Tonight. There is a low probability for widespread hazardous weather. .DAYS TWO THROUGH SEVEN...Monday through Saturday. There is a chance of gale-force wind gusts on the ocean waters Tuesday night and Wednesday. .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 |
|---|---|---|---|---|
| Apr 1, 3:35 PM EDT | Small Craft Advisory | PHI | 23 hr |
Nearby
Winter Weather Advisories in New Jersey, 2018Winter Weather Advisories in Pennsylvania, 2018Winter Weather Advisories in Maryland, 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.