Alert archive / New Jersey / Frost Advisories in 2025
Frost Advisory 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Oct 23, 2025, 2:04 AM EDT for 9 counties in New Jersey; 4 counties in Pennsylvania. It took effect at Oct 24, 2025, 2:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Oct 23, 2025, 2:04 AM EDT (06:04 UTC)
- In effect from
- Oct 24, 2025, 2:00 AM EDT
- Expired
- Oct 24, 2025, 9:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Mercer County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 51 km from the middle of the area, began a volume at 06:05 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, 6.1 hours before the alert went out and 209 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
- 1 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 2005 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
434 WWUS71 KPHI 230604 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 204 AM EDT Thu Oct 23 2025 NJZ013-015>022-027-232030- /O.NEW.KPHI.FR.Y.0004.251024T0600Z-251024T1300Z/ Western Monmouth-Mercer-Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland-Atlantic-Southeastern Burlington- Including the cities of Trenton, Mount Holly, Cherry Hill, Wharton State Forest, Glassboro, Jackson, Millville, Pennsville, Freehold, Moorestown, Camden, and Hammonton 204 AM EDT Thu Oct 23 2025 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Mercer, Western Monmouth, Atlantic, Camden, Cumberland, Gloucester, Northwestern Burlington, Ocean, Salem, and Southeastern Burlington Counties. * WHEN...From 2 AM to 9 AM EDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ PAZ060-101-102-104-106-232030- /O.NEW.KPHI.FR.Y.0004.251024T0600Z-251024T1300Z/ Berks-Western Chester-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Morrisville, West Chester, Honey Brook, Doylestown, Kennett Square, Norristown, Oxford, Lansdale, and Reading 204 AM EDT Thu Oct 23 2025 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Berks, Eastern Chester, Eastern Montgomery, Lower Bucks, and Western Chester Counties. * WHEN...From 2 AM to 9 AM EDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Hoeflich
3 follow-up statements
927 WWUS71 KPHI 231813 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 213 PM EDT Thu Oct 23 2025 NJZ013-015>022-027-240715- /O.CON.KPHI.FR.Y.0004.251024T0600Z-251024T1300Z/ Western Monmouth-Mercer-Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland-Atlantic-Southeastern Burlington- Including the cities of Jackson, Wharton State Forest, Mount Holly, Millville, Pennsville, Moorestown, Camden, Hammonton, Cherry Hill, Glassboro, Trenton, and Freehold 213 PM EDT Thu Oct 23 2025 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... * WHAT...Temperatures as low as 37 will result in frost formation. * WHERE...Mercer, Western Monmouth, Atlantic, Camden, Cumberland, Gloucester, Northwestern Burlington, Ocean, Salem, and Southeastern Burlington Counties. * WHEN...From 2 AM to 9 AM EDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ PAZ060-101-102-104-106-240715- /O.CON.KPHI.FR.Y.0004.251024T0600Z-251024T1300Z/ Berks-Western Chester-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Morrisville, Oxford, Kennett Square, Norristown, Reading, Doylestown, West Chester, Lansdale, and Honey Brook 213 PM EDT Thu Oct 23 2025 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Berks, Eastern Chester, Eastern Montgomery, Lower Bucks, and Western Chester Counties. * WHEN...From 2 AM to 9 AM EDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Cooper
282 WWUS71 KPHI 240605 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 205 AM EDT Fri Oct 24 2025 NJZ013-015>022-027-241300- /O.CON.KPHI.FR.Y.0004.000000T0000Z-251024T1300Z/ Western Monmouth-Mercer-Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland-Atlantic-Southeastern Burlington- Including the cities of Jackson, Freehold, Trenton, Pennsville, Glassboro, Hammonton, Millville, Mount Holly, Wharton State Forest, Cherry Hill, Camden, and Moorestown 205 AM EDT Fri Oct 24 2025 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...Mercer, Western Monmouth, Atlantic, Camden, Cumberland, Gloucester, Northwestern Burlington, Ocean, Salem, and Southeastern Burlington Counties. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ PAZ060-101-102-104-106-241300- /O.CON.KPHI.FR.Y.0004.000000T0000Z-251024T1300Z/ Berks-Western Chester-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Doylestown, Lansdale, Honey Brook, Morrisville, Kennett Square, Norristown, West Chester, Reading, and Oxford 205 AM EDT Fri Oct 24 2025 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Berks, Eastern Chester, Eastern Montgomery, Lower Bucks, and Western Chester Counties. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Hoeflich
608 WWUS71 KPHI 241247 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 847 AM EDT Fri Oct 24 2025 NJZ013-015>022-027-PAZ060-101-102-104-106-241400- /O.EXP.KPHI.FR.Y.0004.000000T0000Z-251024T1300Z/ Western Monmouth-Mercer-Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland-Atlantic-Southeastern Burlington- Berks-Western Chester-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of West Chester, Oxford, Jackson, Cherry Hill, Millville, Lansdale, Trenton, Honey Brook, Morrisville, Doylestown, Reading, Norristown, Wharton State Forest, Glassboro, Mount Holly, Pennsville, Freehold, Hammonton, Kennett Square, Moorestown, and Camden 847 AM EDT Fri Oct 24 2025 ...FROST ADVISORY WILL EXPIRE AT 9 AM EDT THIS MORNING... Temperatures are warming. $$ RCM
Nearby
Frost Advisories in New Jersey, 2025Frost Advisories in Pennsylvania, 2025Every frost 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.