Alert archive / New Jersey / Freeze Warnings in 2020
Freeze Warning 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this freeze warning at Apr 22, 2020, 3:03 PM EDT for 9 counties in New Jersey; 5 counties in Pennsylvania. It took effect at Apr 23, 2020, 12:00 AM EDT. It was in force for 7 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 22, 2020, 3:03 PM EDT (19:03 UTC)
- In effect from
- Apr 23, 2020, 12:00 AM EDT
- Expired
- Apr 23, 2020, 6:33 AM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.1 hours before the alert went out and 176 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
- 1419 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 69 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
895 WWUS71 KPHI 221903 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 303 PM EDT Wed Apr 22 2020 NJZ001-007>010-012-013-015-020-PAZ060>062-103-105-106-230900- /O.NEW.KPHI.FZ.W.0005.200423T0400Z-200423T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Ocean-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Jackson, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 303 PM EDT Wed Apr 22 2020 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures as low as the upper 20s and lower 30s possible. * WHERE...Portions of central, northern, northwest, and southern New Jersey and east-central and southeast Pennsylvania. * WHEN...From midnight tonight to 8 AM EDT Thursday. * 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. && $$ NJZ016>019-021-022-027-PAZ101-102-104-230900- /O.NEW.KPHI.FR.Y.0004.200423T0400Z-200423T1200Z/ Salem-Gloucester-Camden-Northwestern Burlington-Cumberland- Atlantic-Southeastern Burlington-Western Chester-Eastern Chester- Eastern Montgomery- Including the cities of Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Millville, Hammonton, Wharton State Forest, Honey Brook, Oxford, West Chester, Kennett Square, Norristown, and Lansdale 303 PM EDT Wed Apr 22 2020 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM EDT THURSDAY... * WHAT...Temperatures in the lower to middle 30s will result in frost formation. * WHERE...In New Jersey, Salem, Gloucester, Camden, Burlington, Cumberland, and Atlantic Counties. In Pennsylvania, Chester and eastern Montgomery Counties. * WHEN...From midnight tonight to 8 AM EDT Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CMS
2 follow-up statements
565 WWUS71 KPHI 230727 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 327 AM EDT Thu Apr 23 2020 NJZ001-007>010-012-013-015-020-PAZ060>062-103-105-106-231200- /O.CON.KPHI.FZ.W.0005.000000T0000Z-200423T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Ocean-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Jackson, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 327 AM EDT Thu Apr 23 2020 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 31. * WHERE...Portions of central, northern, northwest and southern New Jersey and east central and southeast Pennsylvania. * 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. && $$ NJZ016>019-021-022-027-PAZ101-102-104-231200- /O.CON.KPHI.FR.Y.0004.000000T0000Z-200423T1200Z/ Salem-Gloucester-Camden-Northwestern Burlington-Cumberland- Atlantic-Southeastern Burlington-Western Chester-Eastern Chester- Eastern Montgomery- Including the cities of Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Millville, Hammonton, Wharton State Forest, Honey Brook, Oxford, West Chester, Kennett Square, Norristown, and Lansdale 327 AM EDT Thu Apr 23 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...In New Jersey, Southeastern Burlington, Atlantic, Gloucester, Salem, Northwestern Burlington, Camden and Cumberland. In Pennsylvania, Eastern Montgomery, Western Chester and Eastern Chester. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MPS
405 WWUS71 KPHI 231033 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 633 AM EDT Thu Apr 23 2020 NJZ001-007>010-012-013-015-020-PAZ060>062-103-105-106-231145- /O.CAN.KPHI.FZ.W.0005.000000T0000Z-200423T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Middlesex- Western Monmouth-Mercer-Ocean-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Jackson, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 633 AM EDT Thu Apr 23 2020 ...FREEZE WARNING IS CANCELLED... Temperatures will continue to rise above freezing this morning. $$ NJZ016>019-021-022-027-PAZ101-102-104-231145- /O.CAN.KPHI.FR.Y.0004.000000T0000Z-200423T1200Z/ Salem-Gloucester-Camden-Northwestern Burlington-Cumberland- Atlantic-Southeastern Burlington-Western Chester-Eastern Chester- Eastern Montgomery- Including the cities of Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Millville, Hammonton, Wharton State Forest, Honey Brook, Oxford, West Chester, Kennett Square, Norristown, and Lansdale 633 AM EDT Thu Apr 23 2020 ...FROST ADVISORY IS CANCELLED... Temperatures will continue to warm up this morning. $$ MPS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 3:12 AM EDT | Small Craft Advisory | PHI | 17 hr | |
| Apr 22, 3:03 PM EDT | Frost Advisory | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 16 hr |
Nearby
Freeze Warnings in New Jersey, 2020Freeze Warnings in Pennsylvania, 2020Every freeze warning 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.