Alert archive / Pennsylvania / Winter Weather Advisories in 2025
Winter Weather Advisory 13, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter weather advisory at Dec 1, 2025, 1:28 AM EST for 8 counties in Pennsylvania; 5 counties in New Jersey. It took effect at Dec 2, 2025, 4:00 AM EST. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Dec 1, 2025, 1:28 AM EST (06:28 UTC)
- In effect from
- Dec 2, 2025, 4:00 AM EST
- Expired
- Dec 2, 2025, 4:00 PM EST
- In force
- 12 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 103 km from the middle of the area, began a volume at 06:31 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, 6.5 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
- 490 m above ground
- 0-6 km bulk shear
- 90 kt
- 0-1 km storm-relative helicity
- 375 m²/s²
- 0-3 km storm-relative helicity
- 409 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
793 WWUS41 KPHI 010628 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 128 AM EST Mon Dec 1 2025 NJZ007-PAZ060>062-012100- /O.NEW.KPHI.WW.Y.0013.251202T0900Z-251202T1800Z/ Warren-Berks-Lehigh-Northampton- Including the cities of Washington, Allentown, Bethlehem, Easton, and Reading 128 AM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 1 PM EST TUESDAY... * WHAT...Snow expected. Total snow and sleet accumulations between 2 and 5 inches, greatest at higher elevations. * WHERE...In New Jersey, Warren County. In Pennsylvania, Berks, Lehigh, and Northampton Counties. * WHEN...From 4 AM to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. * ADDITIONAL DETAILS...Snowfall rates up to 1 inch per hour are possible. The snow may mix with sleet before changing to all rain by Tuesday afternoon. 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. && $$ NJZ008-012100- /O.NEW.KPHI.WW.Y.0013.251202T0900Z-251202T1800Z/ Morris- Including the cities of Morristown 128 AM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 1 PM EST TUESDAY... * WHAT...Snow expected. Total snow and sleet accumulations between 1 and 4 inches, greatest at higher elevations. * WHERE...Morris County. * WHEN...From 4 AM to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. * ADDITIONAL DETAILS...Snowfall rates up to 1 inch per hour are possible. The snow may mix with sleet before changing to mostly rain by Tuesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ009-PAZ101-103-105-012100- /O.NEW.KPHI.WW.Y.0013.251202T0900Z-251202T1500Z/ Hunterdon-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Perkasie, Pottstown, Collegeville, Flemington, Chalfont, Oxford, and Honey Brook 128 AM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 10 AM EST TUESDAY... * WHAT...Snow expected. Total snow and sleet accumulations between 1 and 3 inches, greatest at higher elevations. * WHERE...In New Jersey, Hunterdon County. In Pennsylvania, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...From 4 AM to 10 AM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. * ADDITIONAL DETAILS...The snow may mix with sleet before changing to all rain by late Tuesday morning. 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. && $$ PAZ054-055-012100- /O.CON.KPHI.WS.A.0005.251202T0600Z-251203T0300Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 128 AM EST Mon Dec 1 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY EVENING... * WHAT...Heavy snow possible. Total snow accumulations between 4 and 8 inches possible. Snowfall rates in excess of 1 inch per hour possible. * WHERE...Carbon and Monroe Counties. * WHEN...From late tonight through Tuesday evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Sleet or rain may mix in at times during the afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ NJZ001-012100- /O.CON.KPHI.WS.A.0005.251202T0900Z-251203T0300Z/ Sussex- Including the cities of Newton 128 AM EST Mon Dec 1 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY EVENING... * WHAT...Heavy snow possible. Total snow and sleet accumulations between 4 and 7 inches possible. Snowfall rates in excess of 1 inch per hour possible. * WHERE...Sussex County. * WHEN...From late tonight through Tuesday evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Sleet or rain may mix in at times during the afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ Staarmann
8 follow-up statements
517 WWUS41 KPHI 011811 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 111 PM EST Mon Dec 1 2025 PAZ054-055-020900- /O.UPG.KPHI.WS.A.0005.251202T0600Z-251203T0300Z/ /O.EXB.KPHI.WW.Y.0013.251202T0900Z-251202T2300Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 111 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 6 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations between 3 and 5 inches with localized amounts to 6 inches and ice accumulations around a light glaze. * WHERE...Carbon and Monroe Counties. * WHEN...From 4 AM to 6 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ001-020900- /O.UPG.KPHI.WS.A.0005.251202T0900Z-251203T0300Z/ /O.EXB.KPHI.WW.Y.0013.251202T0900Z-251203T0000Z/ Sussex- Including the cities of Newton 111 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 7 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations between 1 and 3 inches with localized amounts to 4 inches and ice accumulations around a light glaze. * WHERE...Sussex County. * WHEN...From 4 AM to 7 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. 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. && $$ NJZ007-PAZ060>062-020900- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1800Z/ Warren-Berks-Lehigh-Northampton- Including the cities of Bethlehem, Washington, Allentown, Reading, and Easton 111 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations up to two inches and ice accumulations around a light glaze. * WHERE...In New Jersey, Warren County. In Pennsylvania, Berks, Lehigh, and Northampton Counties. * WHEN...From 4 AM to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ008-020900- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1800Z/ Morris- Including the cities of Morristown 111 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Morris County. * WHEN...From 4 AM to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. 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. && $$ NJZ009-PAZ101-103-105-020900- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1500Z/ Hunterdon-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Perkasie, Collegeville, Pottstown, Honey Brook, Flemington, Oxford, and Chalfont 111 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 10 AM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to one inch and ice accumulations around a light glaze. * WHERE...In New Jersey, Hunterdon County. In Pennsylvania, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...From 4 AM to 10 AM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Guzzo
556 WWUS41 KPHI 020159 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 859 PM EST Mon Dec 1 2025 NJZ001-021500- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251203T0000Z/ Sussex- Including the cities of Newton 859 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations between 1 and 3 inches and ice accumulations around a light glaze. * WHERE...Sussex County. * WHEN...From 4 AM to 7 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. 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. && $$ NJZ007-PAZ060>062-021500- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1800Z/ Warren-Berks-Lehigh-Northampton- Including the cities of Easton, Washington, Allentown, Bethlehem, and Reading 859 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations up to two inches and ice accumulations around a light glaze. * WHERE...In New Jersey, Warren County. In Pennsylvania, Berks, Lehigh, and Northampton Counties. * WHEN...From 4 AM to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ008-021500- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1800Z/ Morris- Including the cities of Morristown 859 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 1 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Morris County. * WHEN...From 4 AM to 1 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. 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. && $$ NJZ009-PAZ101-103-105-021500- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1500Z/ Hunterdon-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Collegeville, Honey Brook, Pottstown, Chalfont, Perkasie, Oxford, and Flemington 859 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 10 AM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to one inch and ice accumulations around a light glaze. * WHERE...In New Jersey, Hunterdon County. In Pennsylvania, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...From 4 AM to 10 AM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ PAZ054-055-021500- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T2300Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 859 PM EST Mon Dec 1 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 6 PM EST TUESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations between 3 and 5 inches and ice accumulations around a light glaze. * WHERE...Carbon and Monroe Counties. * WHEN...From 4 AM to 6 PM EST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. 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. && $$ PO
338 WWUS41 KPHI 020641 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 141 AM EST Tue Dec 2 2025 NJZ010-021500- /O.EXA.KPHI.WW.Y.0013.251202T0900Z-251202T1500Z/ Somerset- Including the cities of Somerville 141 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING... * WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Somerset County. * WHEN...Until 10 AM EST this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ001-021945- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251203T0000Z/ Sussex- Including the cities of Newton 141 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * WHAT...Mixed precipitation expected. Total snow accumulations between 1 and 3 inches with localized amounts to 4 inches in higher elevations and ice accumulations around a light glaze. * WHERE...Sussex County. * WHEN...Until 7 PM EST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. 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. && $$ NJZ007-PAZ060>062-021800- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1800Z/ Warren-Berks-Lehigh-Northampton- Including the cities of Washington, Easton, Allentown, Reading, and Bethlehem 141 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation expected. Total snow accumulations between 1 and 3 inches with localized amounts to 4 inches in higher elevations and ice accumulations around a light glaze. * WHERE...In New Jersey, Warren County. In Pennsylvania, Berks, Lehigh, and Northampton Counties. * WHEN...Until 1 PM EST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ008-021800- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1800Z/ Morris- Including the cities of Morristown 141 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation expected. Total snow accumulations up to one inch with localized amounts to 2 inches in higher elevations and ice accumulations around a light glaze. * WHERE...Morris County. * WHEN...Until 1 PM EST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. 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. && $$ NJZ009-PAZ101-103-105-021500- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T1500Z/ Hunterdon-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Chalfont, Collegeville, Pottstown, Honey Brook, Flemington, Oxford, and Perkasie 141 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS MORNING... * WHAT...Mixed precipitation expected. Total snow and sleet accumulations up to one inch and ice accumulations around a light glaze. * WHERE...In New Jersey, Hunterdon County. In Pennsylvania, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN...Until 10 AM EST this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ PAZ054-055-021945- /O.CON.KPHI.WW.Y.0013.251202T0900Z-251202T2300Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 141 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST THIS EVENING... * WHAT...Mixed precipitation expected. Total snow accumulations between 3 and 5 inches with localized amounts to 6 inches and ice accumulations around a light glaze. * WHERE...Carbon and Monroe Counties. * WHEN...Until 6 PM EST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. 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. && $$ AKL
045 WWUS41 KPHI 021453 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 953 AM EST Tue Dec 2 2025 PAZ101-021600- /O.EXP.KPHI.WW.Y.0013.000000T0000Z-251202T1500Z/ Western Chester- Including the cities of Honey Brook and Oxford 953 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 10 AM EST THIS MORNING... Temperatures continue to rise above freezing and no further winter precipitation is expected. $$ NJZ009-010-PAZ103-105-021700- /O.EXT.KPHI.WW.Y.0013.000000T0000Z-251202T1700Z/ Hunterdon-Somerset-Western Montgomery-Upper Bucks- Including the cities of Somerville, Pottstown, Collegeville, Chalfont, Perkasie, and Flemington 953 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON EST TODAY... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...In New Jersey, Somerset and Hunterdon Counties. In Pennsylvania, Upper Bucks and Western Montgomery Counties. * WHEN...Until noon EST today. * 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. && $$ NJZ001-030000- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251203T0000Z/ Sussex- Including the cities of Newton 953 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * WHAT...Mixed precipitation. Additional snow accumulations up to two inches and ice accumulations around a light glaze. * WHERE...Sussex County. * WHEN...Until 7 PM EST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ007-PAZ060>062-021800- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251202T1800Z/ Warren-Berks-Lehigh-Northampton- Including the cities of Bethlehem, Allentown, Easton, Washington, and Reading 953 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...In New Jersey, Warren County. In Pennsylvania, Berks, Lehigh, and Northampton Counties. * WHEN...Until 1 PM EST this afternoon. * 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. && $$ NJZ008-021800- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251202T1800Z/ Morris- Including the cities of Morristown 953 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Morris County. * WHEN...Until 1 PM EST this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ PAZ054-055-022300- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251202T2300Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 953 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST THIS EVENING... * WHAT...Snow. Additional snow accumulations between 1 and 3 inches. * WHERE...Carbon and Monroe Counties. * WHEN...Until 6 PM EST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening commute. 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. && $$ Guzzo
597 WWUS41 KPHI 021657 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 1157 AM EST Tue Dec 2 2025 NJZ009-010-PAZ103-105-021800- /O.EXP.KPHI.WW.Y.0013.000000T0000Z-251202T1700Z/ Hunterdon-Somerset-Western Montgomery-Upper Bucks- Including the cities of Somerville, Pottstown, Collegeville, Chalfont, Perkasie, and Flemington 1157 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON EST TODAY... Temperatures continue to rise above freezing in these areas and a transition to all rain has started to occur. Additional winter precipitation is not expected, so the Winter Weather Advisory is allowed to expire. $$ NJZ001-030000- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251203T0000Z/ Sussex- Including the cities of Newton 1157 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Sussex County. * WHEN...Until 7 PM EST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening commute. 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. && $$ NJZ007-PAZ060>062-021800- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251202T1800Z/ Warren-Berks-Lehigh-Northampton- Including the cities of Bethlehem, Allentown, Easton, Washington, and Reading 1157 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...In New Jersey, Warren County. In Pennsylvania, Berks, Lehigh, and Northampton Counties. * WHEN...Until 1 PM EST this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NJZ008-021800- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251202T1800Z/ Morris- Including the cities of Morristown 1157 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Morris County. * WHEN...Until 1 PM EST this afternoon. * 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. && $$ PAZ054-055-022300- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251202T2300Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 1157 AM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST THIS EVENING... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Carbon and Monroe Counties. * WHEN...Until 6 PM EST this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Guzzo
671 WWUS41 KPHI 021754 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 1254 PM EST Tue Dec 2 2025 NJZ007-008-PAZ060>062-021900- /O.EXP.KPHI.WW.Y.0013.000000T0000Z-251202T1800Z/ Warren-Morris-Berks-Lehigh-Northampton- Including the cities of Morristown, Bethlehem, Allentown, Easton, Washington, and Reading 1254 PM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 1 PM EST THIS AFTERNOON... Temperatures continue to rise above freezing in these areas and a transition to all rain has started to occur. Additional winter precipitation is not expected, so the Winter Weather Advisory is allowed to expire. $$ NJZ001-022100- /O.EXT.KPHI.WW.Y.0013.000000T0000Z-251202T2100Z/ Sussex- Including the cities of Newton 1254 PM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Sussex County. * WHEN...Until 4 PM EST this afternoon. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ PAZ054-055-022000- /O.EXT.KPHI.WW.Y.0013.000000T0000Z-251202T2000Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 1254 PM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation. Additional snow accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Carbon and Monroe Counties. * WHEN...Until 3 PM EST this afternoon. * 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. && $$ Guzzo
766 WWUS41 KPHI 021952 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 252 PM EST Tue Dec 2 2025 PAZ054-055-022100- /O.EXP.KPHI.WW.Y.0013.000000T0000Z-251202T2000Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 252 PM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM EST THIS AFTERNOON... Temperatures continue to rise above freezing in these areas and a transition to all rain has started to occur. Additional winter precipitation is not expected as the precipitation is quickly moving out, so the Winter Weather Advisory is allowed to expire. $$ NJZ001-022100- /O.CON.KPHI.WW.Y.0013.000000T0000Z-251202T2100Z/ Sussex- Including the cities of Newton 252 PM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM EST THIS AFTERNOON... * WHAT...Mixed precipitation. Additional snow and sleet accumulations up to one inch and ice accumulations around a light glaze. * WHERE...Sussex County. * WHEN...Until 4 PM EST this afternoon. * 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. && $$ Guzzo
849 WWUS41 KPHI 022043 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 343 PM EST Tue Dec 2 2025 NJZ001-022145- /O.EXP.KPHI.WW.Y.0013.000000T0000Z-251202T2100Z/ Sussex- Including the cities of Newton 343 PM EST Tue Dec 2 2025 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 4 PM EST THIS AFTERNOON... The precipitation continues to move out of the area, so the threat for additional winter precipitation is ending. $$ Guzzo
What forecasters said that day
The local office's own words before this winter weather advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this winter weather advisory went out at Dec 1, 12:40 AM EST, 48 minutes earlier.
Area forecast discussion, Dec 1, 12:40 AM EST, 48 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
1240 AM EST Mon Dec 1 2025
.SYNOPSIS...
A low pressure system and its associated cold front continue to
approach the region, with the cold front passing through
tonight. Low pressure will develop over the Southeast Monday
night before tracking northeast towards our area Tuesday into
Tuesday night. Another cold front will track through the region
Thursday night, with high pressure building back in thereafter.
Another system may impact the region Friday night into the
weekend.
&&
.NEAR TERM /THROUGH TODAY/...
A mid-level shortwave axis embedded in a larger scale trough is
currently pivoting northeastward into portions of far southern
Ontario and Quebec. The trough will depart to the northeast
tonight, with subtle height rises through Monday as a subtle
ridge axis shifts through the area ahead of the next major
trough. At the surface, the cold front that has been moving
through the region is now clearing the area and moving offshore.
High pressure will begin to build in behind from the Ohio
Valley region and remain in place through Monday evening.
Tonight, clouds will clear with the passage of the cold front.
There may be a brief lull in the wind during the early hours of
the night, but as the cold front moves through it will again get
breezy out of the northwest, with gusts to 20 mph to perhaps 30
mph. With strong cold air advection taking place, lows tonight
will be in the upper 20s to near 30 degrees across the entire
area.
Monday should start mostly clear, with some increase in high clouds
during the afternoon hours. Gusty northwest winds in the
morning will diminish by the afternoon as the high moves
overhead and the pressure gradient relaxes. High temperatures
will be near freezing in the Poconos, in the upper 30s to lower
40s for eastern PA and much of NJ, and mid 40s for the Delmarva
into far southern NJ.
&&
.SHORT TERM /TONIGHT THROUGH WEDNESDAY/...
The main story for the short term will be the strengthening low
pressure system moving northeast Monday night and off the coast into
Tuesday, which will bring widespread precipitation to the region.
There will be a low developing over the southeastern US and our high
pressure system will retreat off to the northeast Monday night. This
low will make its closest approach to the area Tuesday afternoon,
and begin departing to the northeast by Tuesday night.
In terms of the details with this system, no significant changes
have been made to the forecast or messaging for Tuesday.
There are chance to likely PoPs (50-70%) starting Monday night, with
the highest PoPs (90-100%) being during the daytime Tuesday. There
has been a trend toward a somewhat faster solution in the
deterministic guidance, hence the slight increase in PoPs in the
predawn hours Tuesday morning. If this trend holds, it could have
implications on initial precip type into the I-95 corridor. The
precipitation will end from west to east pretty quickly by Tuesday
evening into Tuesday night as the low moves off to the northeast.
For the precipitation accumulation, QPF has remained fairly steady
around 0.75-1.25" across the board, greatest across the coastal
plain and least farther inland north of I-78. Due to the earlier
trend in precip onset, there is the potential for light snow
initially for much of the area, as far south as northeastern
Maryland, central and northern Delaware, and portions of interior
southern New Jersey. This initial light snow could result in minimal
accumulation (a dusting less than 1"), and would not last long as
the low draws closer to the area changing the precip to rain. Again,
any snowfall occuring this far south will be dependent on exactly
how quickly the precip moves into the area. A slower onset would
probably mean mostly all rain southeast of I-95.
Through the day Tuesday, the onshore flow and warm marine influence
will impact the temperature profiles. By daybreak Tuesday, the
rain/snow line should be near or perhaps just NW of the I-95
corridor. As the warmer air continues to filter in, the rain/snow
line may get as far NW as I-78 and northwestern New Jersey by
Tuesday afternoon. For perspective on this, the temperatures for
highs on Tuesday are near freezing in the Poconos, upper 30s
northwest of the fall line, near 40 degrees along the I-95 corridor,
and in the mid 40s to near 50 in Delmarva and along the coastal
areas. Although areas may start as snow, it does not appear that it
will last for much of the area. Right now, the Poconos have the best
potential at an all snow event from this system.
As for snowfall accumulation, the potential continues to increase
for plowable snow (2" or more) in the Poconos and areas along and
north of I-78. As you head well south and east of I-78, the
potential for plowable snow quickly decreases. Our latest forecast
includes snowfall amounts less than 1" for the immediate I-95
corridor, 1-3" for areas just northwest of there, and in the 3-5"
range for the I-78 corridor and NW NJ. Higher elevations (especially
1,500 feet and higher) in NW NJ and across the Pocono Plateau have
potential for snowfall in the 4-8" range. Due to increasing
confidence of warning level snow (6 inches or more) in the Poconos
and in Sussex county NJ, we have issued a Winter Storm Watch for
Carbon and Monroe counties in PA and Sussex county in NJ from late
Monday night into Tuesday evening.
Outside of mainly the Poconos and perhaps the higher elevations in
NW NJ, the snow that falls will then be melting through the day with
the change to all rain and warm air moving further inland. During
the transition period from snow to rain, some sleet is possible
briefly. In terms of freezing rain, the overall threat looks minimal
given the current set up. The areas that see all rain or a change to
rain will have a good soaking all-day type of rain. A few
precipitation and/or snowfall records could be challenged. See the
Climate section below for more details on the records.
Once the low departs Tuesday night, a high pressure system will
build in from the southwest. This will lead to drier conditions
through Tuesday night. Lows Tuesday night are in the 20s for most,
which may lead to some black ice issues where any slushy snow melt
refreezes on roadways (especially near and north of I-78).
For Wednesday, the high pressure system is in place which keeps us
dry. It is also a colder day with highs in the mid 30s to low
40s.
&&
.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
In the long term period, we stay active with our weather pattern. A
cold front looks to cross the area Thursday into Thursday night. As
the cold front passes through, there is the potential for some snow
showers, especially near/north of I-78. The main factor with this
cold front will be the notably colder airmass in its wake. Thursday
night looks increasingly likely to be the coldest night so far this
season, with widespread low temperatures in the teens for most, and
even single digits for the higher terrain. Wind chill values
Thursday night will be in the single digits to teens. By Friday,
highs are in the upper 20s to upper 30s for most areas. Beyond that,
our next system looks to arrive late Friday into the weekend,
bringing potential for another round of widespread precipitation,
including wintry precipitation. However, details on this system
remain very unclear at the moment.
&&
.AVIATION /06Z MONDAY THROUGH FRIDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG,
KILG, KMIV, KACY and surrounding areas.
Tonight...VFR. West-northwest winds behind a cold front around
10-15 kt with gusts upwards of 20-25 kt overnight. Moderate-high
confidence.
Monday...VFR with an increase in high clouds late in the day.
Northwest winds around 10 kt with gusts up to 20 kt in the
morning, before diminishing to around 5-10 kt in the afternoon.
High confidence.
Outlook...
Monday night...Primarily VFR. Chance (40-60%) of sub-VFR
conditions in rain or snow late Monday night.
Tuesday through Tuesday night...Restrictions expected in low
clouds and precipitation. Snow changing to rain at RDG/ABE. For
the I-95 terminals, precipitation may begin as snow for a
couple hours before a change to rain. All rain for MIV/ACY.
Conditions should improve by late Tuesday night, though gusty NW
winds will be possible.
Wednesday...VFR. No significant weather.
Thursday...Mainly VFR. Gusty WNW winds possible.
Friday...Mainly VFR for Friday. Restrictions possible heading
towards Friday night with a chance (40-60%) of rain/snow.
&&
.MARINE...
A Small Craft Advisory is in effect for the Delaware Bay until 6
AM Monday and for the Atlantic Coastal Waters until 9 AM Monday.
Overnight, winds will become northwesterly around 20-25 kt with
frequent gusts near 30 kt for all ocean zones and the Delaware
Bay. Seas over the ocean should be around 5 feet to start the
night, decreasing to around 4 feet by sunrise.
Wind will then begin to diminish by Monday morning, falling
below 25 kt and with seas less than 5 feet.
Outlook...
Monday night...No marine hazards anticipated. Fair weather.
Tuesday through Wednesday...SCA conditions likely with east
winds increasing to near 25-30 kts and then becoming northwest
Tuesday night into Wednesday. The potential for wind gusts near
35 knots has increased, so a Gale Watch was issued for the ocean
zones Tuesday night. Winds look to diminish through the day
Wednesday. Seas 5-7 feet, also diminishing through the day
Wednesday.
Thursday through Thursday night...SCA conditions likely
Thursday afternoon into early Thursday night as NW winds
increase to near 25-30 kts and seas 4-6 feet.
Friday through Friday night...No marine hazards anticipated.
&&
.CLIMATE...
Widespread moderate to heavy precipitation is expected on
Tuesday, December 2nd. A few daily precipitation and/or snowfall
records could be challenged. Records for our climate sites are
listed below:
Record Precipitation (Rainfall)
December 2
Site Record/Year
Allentown (ABE) 0.86"/1934
AC Airport (ACY) 1.03"/1996
AC Marina (55N) 1.18"/1929
Georgetown (GED) 1.11"/1974
Mount Pocono (MPO) 3.56"/1996
Philadelphia (PHL) 1.48"/1986
Reading (RDG) 1.29"/1981
Trenton (TTN) 2.13"/1986
Wilmington (ILG) 1.27"/1991
Record Snowfall
December 2
Site Record/Year
Allentown (ABE) 3.6"/1952
AC Airport (ACY) T/2019*
Philadelphia (PHL) 2.0"/1903
Reading (RDG) 6.0"/1929
Trenton (TTN) 3.0"/1903
Wilmington (ILG) 1.0"/1952
*Multiple years with a Trace.
&&
.PHI WATCHES/WARNINGS/ADVISORIES...
PA...Winter Storm Watch from late tonight through Tuesday evening
for PAZ054-055.
NJ...Winter Storm Watch from late tonight through Tuesday evening
for NJZ001.
DE...None.
MD...None.
MARINE...Small Craft Advisory until 6 AM EST early this morning for
ANZ430-431.
Small Craft Advisory until 9 AM EST this morning for
ANZ450>455.
Gale Watch from Tuesday afternoon through late Tuesday night
for ANZ450>455.
&&
SYNOPSIS...Guzzo/Staarmann
NEAR TERM...AKL/Cooper/DeSilva
SHORT TERM...Guzzo/Staarmann
LONG TERM...Guzzo/Staarmann
AVIATION...AKL/Cooper/DeSilva/Guzzo
MARINE...Cooper/DeSilva/Guzzo
CLIMATE...WFO PHIHazardous weather outlook, Nov 30, 5:09 AM EST, 20 hours 19 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 509 AM EST Sun Nov 30 2025 MDZ012-015-019-020-011100- Kent MD-Queen Annes-Talbot-Caroline- 509 AM EST Sun Nov 30 2025 This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. A storm system will bring potential for light snowfall accumulations less than 1 inch early Tuesday morning, before changing to all rain for the remainder of the day. Slippery road conditions may be possible Tuesday morning if any snowfall accumulation occurs. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures. Staarmann
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 9:31 AM EST | Small Craft Advisory | PHI | 3 hr | |
| Dec 1, 1:23 PM EST | Small Craft Advisory | PHI | 44 hr |
Nearby
Winter Weather Advisories in Pennsylvania, 2025Winter Weather Advisories in New Jersey, 2025Every winter weather advisory in 2025
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.