Alert archive / New Jersey / Frost Advisories in 2024
Frost Advisory 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Apr 22, 2024, 9:51 AM EDT for 4 states. It took effect at Apr 23, 2024, 2:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 22, 2024, 9:51 AM EDT (13:51 UTC)
- In effect from
- Apr 23, 2024, 2:00 AM EDT
- Expired
- Apr 23, 2024, 9:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 31 counties
Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, 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, Chester County, PA, Delaware County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 65 km from the middle of the area, began a volume at 13:52 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 1.9 hours before the alert went out and 219 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
- 1602 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
218 WWUS71 KPHI 221351 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 951 AM EDT Mon Apr 22 2024 NJZ001-007>010-012-015-PAZ060>062-070-101>106-231300- /O.NEW.KPHI.FR.Y.0004.240423T0600Z-240423T1300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-Berks- Lehigh-Northampton-Delaware-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Trenton, Reading, Allentown, Bethlehem, Easton, Media, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 951 AM EDT Mon Apr 22 2024 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of central, northern and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...From 2 AM to 9 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
4 follow-up statements
031 WWUS71 KPHI 221858 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 258 PM EDT Mon Apr 22 2024 DEZ001-NJZ013-016>022-027-230800- /O.EXA.KPHI.FR.Y.0004.240423T0600Z-240423T1300Z/ New Castle-Western Monmouth-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Southeastern Burlington- Including the cities of Wilmington, Freehold, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, and Wharton State Forest 258 PM EDT Mon Apr 22 2024 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT TUESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...In Delaware, New Castle. In New Jersey, Western Monmouth, Salem, Gloucester, Camden, Northwestern Burlington, Ocean, Cumberland, Atlantic and Southeastern Burlington. * WHEN...From 2 AM to 9 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ001-007>010-012-015-PAZ060>062-070-101>106-230800- /O.CON.KPHI.FR.Y.0004.240423T0600Z-240423T1300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex-Mercer-Berks- Lehigh-Northampton-Delaware-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Trenton, Reading, Allentown, Bethlehem, Easton, Media, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 258 PM EDT Mon Apr 22 2024 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of central, northern and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...From 2 AM to 9 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
557 WWUS71 KPHI 222236 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 636 PM EDT Mon Apr 22 2024 NJZ001-007>010-012-013-015-020>022-027-PAZ060>062-101>103-105- 231145- /O.UPG.KPHI.FR.Y.0004.240423T0600Z-240423T1300Z/ /O.NEW.KPHI.FZ.W.0001.240423T0600Z-240423T1300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Ocean-Cumberland-Atlantic- Southeastern Burlington-Berks-Lehigh-Northampton-Western Chester- Eastern Chester-Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Jackson, Millville, Hammonton, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Chalfont, and Perkasie 636 PM EDT Mon Apr 22 2024 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM EDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of central, northern, northwest and southern New Jersey and east central and southeast Pennsylvania. * WHEN...From 2 AM to 9 AM EDT Tuesday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ DEZ002-003-MDZ012-015-019-020-NJZ023-PAZ071-231145- /O.EXA.KPHI.FR.Y.0004.240423T0600Z-240423T1300Z/ Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline-Cape May- Philadelphia- Including the cities of Dover, Georgetown, Chestertown, Centreville, Easton, Denton, Cape May Court House, and Philadelphia 636 PM EDT Mon Apr 22 2024 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM EDT TUESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...In Delaware, Kent and Inland Sussex. In Maryland, Kent MD, Queen Annes, Talbot and Caroline. In New Jersey, Cape May. In Pennsylvania, Philadelphia. * WHEN...From 2 AM to 9 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ DEZ001-NJZ016>019-PAZ070-104-106-231145- /O.CON.KPHI.FR.Y.0004.240423T0600Z-240423T1300Z/ New Castle-Salem-Gloucester-Camden-Northwestern Burlington- Delaware-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Media, Norristown, Lansdale, Morrisville, and Doylestown 636 PM EDT Mon Apr 22 2024 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM EDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In Delaware, New Castle. In New Jersey, Salem, Gloucester, Camden and Northwestern Burlington. In Pennsylvania, Delaware, Eastern Montgomery and Lower Bucks. * WHEN...From 2 AM to 9 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Wunderlin
680 WWUS71 KPHI 230506 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 106 AM EDT Tue Apr 23 2024 NJZ001-007>010-012-013-015-020>022-027-PAZ060>062-101>103-105- 231300- /O.CON.KPHI.FZ.W.0001.240423T0600Z-240423T1300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Ocean-Cumberland-Atlantic- Southeastern Burlington-Berks-Lehigh-Northampton-Western Chester- Eastern Chester-Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Jackson, Millville, Hammonton, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Chalfont, and Perkasie 106 AM EDT Tue Apr 23 2024 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of central, northern, northwest and southern New Jersey and east central and southeast Pennsylvania. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ DEZ001>003-MDZ012-015-019-020-NJZ016>019-023-PAZ070-071-104-106- 231300- /O.CON.KPHI.FR.Y.0004.240423T0600Z-240423T1300Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline- Salem-Gloucester-Camden-Northwestern Burlington-Cape May-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Chestertown, Centreville, Easton, Denton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Cape May Court House, Media, Philadelphia, Norristown, Lansdale, Morrisville, and Doylestown 106 AM EDT Tue Apr 23 2024 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of central, northern and southern Delaware, northeast Maryland, southern New Jersey and southeast Pennsylvania. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
967 WWUS71 KPHI 231321 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 921 AM EDT Tue Apr 23 2024 NJZ001-007>010-012-013-015-020>022-027-PAZ060>062-101>103-105- 231430- /O.EXP.KPHI.FZ.W.0001.000000T0000Z-240423T1300Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Ocean-Cumberland-Atlantic- Southeastern Burlington-Berks-Lehigh-Northampton-Western Chester- Eastern Chester-Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Jackson, Millville, Hammonton, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Chalfont, and Perkasie 921 AM EDT Tue Apr 23 2024 ...FREEZE WARNING HAS EXPIRED... Temperatures have risen into the 40s and 50s across the area. Therefore, the Freeze Warning was allowed to expire. $$ DEZ001>003-MDZ012-015-019-020-NJZ016>019-023-PAZ070-071-104-106- 231430- /O.EXP.KPHI.FR.Y.0004.000000T0000Z-240423T1300Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Talbot-Caroline- Salem-Gloucester-Camden-Northwestern Burlington-Cape May-Delaware- Philadelphia-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Chestertown, Centreville, Easton, Denton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Cape May Court House, Media, Philadelphia, Norristown, Lansdale, Morrisville, and Doylestown 921 AM EDT Tue Apr 23 2024 ...FROST ADVISORY HAS EXPIRED... Temperatures have risen into the 40s and 50s across the area. Therefore, the Frost Advisory was allowed to expire. $$ AKL
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 3:00 PM EDT | Small Craft Advisory | PHI | 3 days | |
| Apr 22, 6:36 PM EDT | Freeze Warning | PHI | Atlantic, Burlington, Cumberland, Hunterdon, Mercer, Middlesex and 6 more | 14 hr |
Nearby
Frost Advisories in New Jersey, 2024Frost Advisories in Pennsylvania, 2024Frost Advisories in Maryland, 2024Every frost advisory in 2024
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.