Alert archive / New Jersey / Frost Advisories in 2020
Frost Advisory 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Apr 18, 2020, 3:07 AM EDT for 4 states. It took effect at Apr 19, 2020, 12:00 AM EDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Apr 18, 2020, 3:07 AM EDT (07:07 UTC)
- In effect from
- Apr 19, 2020, 12:00 AM EDT
- Expired
- Apr 19, 2020, 8:00 AM EDT
- In force
- 8 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Cecil County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex 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), 62 km from the middle of the area, began a volume at 07:07 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
Wallops Is Stn, VA (KWAL), launched 00:00Z, 7.1 hours before the alert went out and 206 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
- 1449 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 443 m²/s²
- 0-3 km storm-relative helicity
- 708 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
779 WWUS71 KPHI 180707 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 307 AM EDT Sat Apr 18 2020 NJZ001-007>010-PAZ061-062-182015- /O.NEW.KPHI.FZ.W.0003.200419T0400Z-200419T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Lehigh-Northampton- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Allentown, Bethlehem, and Easton 307 AM EDT Sat Apr 18 2020 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SUNDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...In New Jersey, Sussex, Warren, Morris, Hunterdon and Somerset. In Pennsylvania, Lehigh and Northampton. * WHEN...From midnight tonight to 8 AM EDT Sunday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ012-013-015>022-027-PAZ060-101>106-182015- /O.NEW.KPHI.FR.Y.0003.200419T0400Z-200419T1200Z/ Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Southeastern Burlington-Berks-Western Chester-Eastern Chester- Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks- Including the cities of New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Wharton State Forest, Reading, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Chalfont, Perkasie, Morrisville, and Doylestown 307 AM EDT Sat Apr 18 2020 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SUNDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central, northern and southern New Jersey and east central and southeast Pennsylvania. * WHEN...From midnight tonight to 8 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Staarmann
3 follow-up statements
642 WWUS71 KPHI 181938 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 338 PM EDT Sat Apr 18 2020 PAZ060-103-105-190845- /O.UPG.KPHI.FR.Y.0003.200419T0400Z-200419T1200Z/ /O.EXA.KPHI.FZ.W.0003.200419T0400Z-200419T1200Z/ Berks-Western Montgomery-Upper Bucks- Including the cities of Reading, Collegeville, Pottstown, Chalfont, and Perkasie 338 PM EDT Sat Apr 18 2020 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SUNDAY... * WHAT...Sub-freezing temperatures as low as 31 expected. * WHERE...Berks, Western Montgomery and Upper Bucks. * WHEN...From midnight tonight to 8 AM EDT Sunday. * IMPACTS...Frost and freeze conditions may kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ019>022-027-190845- /O.UPG.KPHI.FR.Y.0003.200419T0400Z-200419T1200Z/ /O.EXA.KPHI.FZ.W.0003.200419T0400Z-200419T1200Z/ Northwestern Burlington-Ocean-Cumberland-Atlantic- Southeastern Burlington- Including the cities of Moorestown, Mount Holly, Jackson, Millville, Hammonton, and Wharton State Forest 338 PM EDT Sat Apr 18 2020 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SUNDAY... * WHAT...Sub-freezing temperatures as low as 31 expected. * WHERE...Northwestern Burlington, Ocean, Cumberland, Atlantic and Southeastern Burlington. * WHEN...From midnight tonight to 8 AM EDT Sunday. * IMPACTS...Frost and freeze conditions may kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ001-007>010-PAZ061-062-190845- /O.CON.KPHI.FZ.W.0003.200419T0400Z-200419T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Lehigh-Northampton- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Allentown, Bethlehem, and Easton 338 PM EDT Sat Apr 18 2020 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SUNDAY... * WHAT...Sub-freezing temperatures as low as 31 expected. * WHERE...In New Jersey, Morris, Hunterdon, Warren, Sussex and Somerset. In Pennsylvania, Northampton and Lehigh. * WHEN...From midnight tonight to 8 AM EDT Sunday. * IMPACTS...Frost and freeze conditions may kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ DEZ001>003-MDZ008-NJZ023-024-190845- /O.EXA.KPHI.FR.Y.0003.200419T0400Z-200419T1200Z/ New Castle-Kent-Inland Sussex-Cecil-Cape May- Atlantic Coastal Cape May- Including the cities of Wilmington, Dover, Georgetown, Elkton, Cape May Court House, and Ocean City 338 PM EDT Sat Apr 18 2020 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SUNDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...In New Jersey, Cape May and Atlantic Coastal Cape May. In Maryland, Cecil. In Delaware, New Castle, Kent and Inland Sussex. * WHEN...From midnight tonight to 8 AM EDT Sunday. * IMPACTS...Frost could damage or kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ012-013-015>018-PAZ101-102-104-106-190845- /O.CON.KPHI.FR.Y.0003.200419T0400Z-200419T1200Z/ Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden- Western Chester-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Honey Brook, Oxford, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 338 PM EDT Sat Apr 18 2020 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT SUNDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...In Pennsylvania, Eastern Montgomery, Lower Bucks, Western Chester and Eastern Chester. In New Jersey, Gloucester, Salem, Mercer, Western Monmouth, Middlesex and Camden. * WHEN...From midnight tonight to 8 AM EDT Sunday. * IMPACTS...Frost could damage or kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
055 WWUS71 KPHI 190720 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 320 AM EDT Sun Apr 19 2020 NJZ001-007>010-PAZ060>062-103-105-191200- /O.CON.KPHI.FZ.W.0003.000000T0000Z-200419T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, and Perkasie 320 AM EDT Sun Apr 19 2020 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 28. * WHERE...In New Jersey, Morris, Hunterdon, Warren, Sussex and Somerset. In Pennsylvania, Upper Bucks, Western Montgomery, Northampton, Lehigh and Berks. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ019>022-027-191200- /O.CON.KPHI.FZ.W.0003.000000T0000Z-200419T1200Z/ Northwestern Burlington-Ocean-Cumberland-Atlantic- Southeastern Burlington- Including the cities of Moorestown, Mount Holly, Jackson, Millville, Hammonton, and Wharton State Forest 320 AM EDT Sun Apr 19 2020 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 28. * WHERE...Southeastern Burlington, Atlantic, Ocean, Cumberland and Northwestern Burlington. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ DEZ001>003-MDZ008-NJZ012-013-015>018-023-024-PAZ101-102-104-106- 191200- /O.CON.KPHI.FR.Y.0003.000000T0000Z-200419T1200Z/ New Castle-Kent-Inland Sussex-Cecil-Middlesex-Western Monmouth- Mercer-Salem-Gloucester-Camden-Cape May-Atlantic Coastal Cape May- Western Chester-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Elkton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Cape May Court House, Ocean City, Honey Brook, Oxford, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 320 AM EDT Sun Apr 19 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of central, northern and southern New Jersey, southeast Pennsylvania, northeast Maryland and central, northern and southern Delaware. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Staarmann
826 WWUS71 KPHI 191153 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 753 AM EDT Sun Apr 19 2020 NJZ001-007>010-PAZ060>062-103-105-191300- /O.EXP.KPHI.FZ.W.0003.000000T0000Z-200419T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, and Perkasie 753 AM EDT Sun Apr 19 2020 ...FREEZE WARNING WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures will continue to rise above freezing this morning. Therefore the Freeze Warning will be allowed to expire at 8 am. $$ NJZ019>022-027-191300- /O.EXP.KPHI.FZ.W.0003.000000T0000Z-200419T1200Z/ Northwestern Burlington-Ocean-Cumberland-Atlantic- Southeastern Burlington- Including the cities of Moorestown, Mount Holly, Jackson, Millville, Hammonton, and Wharton State Forest 753 AM EDT Sun Apr 19 2020 ...FREEZE WARNING WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures will continue to rise above freezing this morning. Therefore the Freeze Warning will be allowed to expire at 8 am. $$ DEZ001>003-MDZ008-NJZ012-013-015>018-023-024-PAZ101-102-104-106- 191300- /O.EXP.KPHI.FR.Y.0003.000000T0000Z-200419T1200Z/ New Castle-Kent-Inland Sussex-Cecil-Middlesex-Western Monmouth- Mercer-Salem-Gloucester-Camden-Cape May-Atlantic Coastal Cape May- Western Chester-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Elkton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Cape May Court House, Ocean City, Honey Brook, Oxford, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 753 AM EDT Sun Apr 19 2020 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures will continue to rise this morning. Therefore the Frost Advisory will be allowed to expire at 8 am.|. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 3:07 AM EDT | Freeze Warning | PHI | Atlantic, Burlington, Cumberland, Hunterdon, Morris, Ocean and 3 more | 29 hr |
Nearby
Frost Advisories in New Jersey, 2020Frost Advisories in Pennsylvania, 2020Frost Advisories in Delaware, 2020Every frost advisory in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.