Alert archive / New Jersey / Freeze Warnings in 2023
Freeze Warning 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this freeze warning at Apr 9, 2023, 9:10 AM EDT for 4 states. It took effect at Apr 10, 2023, 12:00 AM EDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 9, 2023, 9:10 AM EDT (13:10 UTC)
- In effect from
- Apr 10, 2023, 12:00 AM EDT
- Expired
- Apr 10, 2023, 9:00 AM EDT
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Kent County, DE, Sussex County, DE, Caroline 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), 60 km from the middle of the area, began a volume at 13:12 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 12:00Z, 1.2 hours before the alert went out and 203 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
- 1395 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- -54 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
236 WWUS71 KPHI 091310 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 910 AM EDT Sun Apr 9 2023 DEZ002-003-MDZ020-NJZ012-013-015>023-027-PAZ060-101>104-106- 100300- /O.NEW.KPHI.FZ.W.0003.230410T0400Z-230410T1300Z/ Kent-Inland Sussex-Caroline-Middlesex-Western Monmouth-Mercer- Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Southeastern Burlington-Berks-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Lower Bucks- Including the cities of Dover, Georgetown, Denton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Wharton State Forest, Reading, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Morrisville, and Doylestown 910 AM EDT Sun Apr 9 2023 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... * WHAT...Sub-freezing temperatures as low as the upper 20s and lower 30s. * WHERE...Much of southeastern Pennsylvania, central and southern New Jersey, central and southern Delaware, and Caroline County in eastern Maryland. * WHEN...From midnight tonight until 9:00 AM Monday. * 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. && $$ DEZ001-MDZ012-015-019-PAZ070-071-100300- /O.NEW.KPHI.FR.Y.0004.230410T0400Z-230410T1300Z/ New Castle-Kent MD-Queen Annes-Talbot-Delaware-Philadelphia- Including the cities of Wilmington, Chestertown, Centreville, Easton, Media, and Philadelphia 910 AM EDT Sun Apr 9 2023 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... * WHAT...Temperatures as low as the middle 30s will result in frost formation. * WHERE...The Pennsylvania counties of Delaware and Philadelphia, New Castle County in Delaware, and the Maryland counties of Kent, Queen Anne's and Talbot. * WHEN...From midnight tonight until 9:00 AM Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Iovino
3 follow-up statements
629 WWUS71 KPHI 091840 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 240 PM EDT Sun Apr 9 2023 DEZ002-003-MDZ020-NJZ012-013-015>023-027-PAZ060-101>104-106- 101000- /O.CON.KPHI.FZ.W.0003.230410T0400Z-230410T1300Z/ Kent-Inland Sussex-Caroline-Middlesex-Western Monmouth-Mercer- Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Southeastern Burlington-Berks-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Lower Bucks- Including the cities of Dover, Georgetown, Denton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Wharton State Forest, Reading, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Morrisville, and Doylestown 240 PM EDT Sun Apr 9 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... * WHAT...Sub-freezing temperatures as low as the upper 20s and lower 30s. * WHERE...Much of southeastern Pennsylvania, central and southern New Jersey, central and southern Delaware, and Caroline County in eastern Maryland. * WHEN...From midnight tonight until 9:00 AM Monday. * 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. && $$ DEZ001-MDZ012-015-019-PAZ070-071-101000- /O.CON.KPHI.FR.Y.0004.230410T0400Z-230410T1300Z/ New Castle-Kent MD-Queen Annes-Talbot-Delaware-Philadelphia- Including the cities of Wilmington, Chestertown, Centreville, Easton, Media, and Philadelphia 240 PM EDT Sun Apr 9 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... * WHAT...Temperatures as low as the middle 30s will result in frost formation. * WHERE...The Pennsylvania counties of Delaware and Philadelphia, New Castle County in Delaware, and the Maryland counties of Kent, Queen Anne's and Talbot. * WHEN...From midnight tonight until 9:00 AM Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Iovino
273 WWUS71 KPHI 092246 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 646 PM EDT Sun Apr 9 2023 DEZ002-003-MDZ020-NJZ012-013-015>023-027-PAZ060-101>104-106- 101300- /O.CON.KPHI.FZ.W.0003.230410T0400Z-230410T1300Z/ Kent-Inland Sussex-Caroline-Middlesex-Western Monmouth-Mercer- Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Southeastern Burlington-Berks-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Lower Bucks- Including the cities of Dover, Georgetown, Denton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Wharton State Forest, Reading, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Morrisville, and Doylestown 646 PM EDT Sun Apr 9 2023 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... * WHAT...Sub-freezing temperatures as low as the upper 20s and lower 30s. * WHERE...Portions of central and southern Delaware, northeast Maryland, central, northern and southern New Jersey and east central and southeast Pennsylvania. * WHEN...From midnight tonight to 9 AM EDT Monday. * 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. && $$ NJZ014-101300- /O.EXA.KPHI.FR.Y.0004.230410T0400Z-230410T1300Z/ Eastern Monmouth- Including the city of Sandy Hook 646 PM EDT Sun Apr 9 2023 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... * WHAT...Temperatures as low as the middle 30s will result in frost formation. * WHERE...Eastern Monmouth. * WHEN...From midnight tonight to 9 AM EDT Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ DEZ001-MDZ012-015-019-PAZ070-071-101300- /O.CON.KPHI.FR.Y.0004.230410T0400Z-230410T1300Z/ New Castle-Kent MD-Queen Annes-Talbot-Delaware-Philadelphia- Including the cities of Wilmington, Chestertown, Centreville, Easton, Media, and Philadelphia 646 PM EDT Sun Apr 9 2023 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT MONDAY... * WHAT...Temperatures as low as the middle 30s will result in frost formation. * WHERE...In Delaware, New Castle. In Maryland, Kent MD, Queen Annes and Talbot. In Pennsylvania, Delaware and Philadelphia. * WHEN...From midnight tonight to 9 AM EDT Monday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Staarmann
971 WWUS71 KPHI 101257 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 857 AM EDT Mon Apr 10 2023 DEZ002-003-MDZ020-NJZ012-013-015>023-027-PAZ060-101>104-106- 101400- /O.EXP.KPHI.FZ.W.0003.000000T0000Z-230410T1300Z/ Kent-Inland Sussex-Caroline-Middlesex-Western Monmouth-Mercer- Salem-Gloucester-Camden-Northwestern Burlington-Ocean-Cumberland- Atlantic-Cape May-Southeastern Burlington-Berks-Western Chester- Eastern Chester-Western Montgomery-Eastern Montgomery-Lower Bucks- Including the cities of Dover, Georgetown, Denton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Cape May Court House, Wharton State Forest, Reading, Honey Brook, Oxford, West Chester, Kennett Square, Collegeville, Pottstown, Norristown, Lansdale, Morrisville, and Doylestown 857 AM EDT Mon Apr 10 2023 ...FREEZE WARNING WILL EXPIRE AT 9 AM EDT THIS MORNING... Temperatures have now risen above freezing across the area this morning. Therefore, the Freeze Warning will be allowed to expire. $$ DEZ001-MDZ012-015-019-NJZ014-PAZ070-071-101400- /O.EXP.KPHI.FR.Y.0004.000000T0000Z-230410T1300Z/ New Castle-Kent MD-Queen Annes-Talbot-Eastern Monmouth-Delaware- Philadelphia- Including the cities of Wilmington, Chestertown, Centreville, Easton, Sandy Hook, Media, and Philadelphia 857 AM EDT Mon Apr 10 2023 ...FROST ADVISORY WILL EXPIRE AT 9 AM EDT THIS MORNING... Temperatures have risen into the 40s across much of the area and frost has largely dissipated as a result. Therefore, the Frost Advisory will be 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 9, 9:10 AM EDT | Frost Advisory | PHI | Monmouth | 24 hr |
Nearby
Freeze Warnings in New Jersey, 2023Freeze Warnings in Pennsylvania, 2023Freeze Warnings in Delaware, 2023Every freeze warning in 2023
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.