Alert archive / New Jersey / Frost Advisories in 2022
Frost Advisory 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Apr 20, 2022, 3:14 AM EDT for 6 counties in New Jersey; 4 counties in Pennsylvania. It took effect at Apr 20, 2022, 10:00 PM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Apr 20, 2022, 3:14 AM EDT (07:14 UTC)
- In effect from
- Apr 20, 2022, 10:00 PM EDT
- Expired
- Apr 21, 2022, 6:33 AM EDT
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Hunterdon County, NJ, Mercer County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Bucks County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 89 km from the middle of the area, began a volume at 07:13 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, 7.2 hours before the alert went out and 181 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
- 1842 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
055 WWUS71 KPHI 200714 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 314 AM EDT Wed Apr 20 2022 NJZ001-007>010-015-PAZ061-062-103-105-106-202000- /O.NEW.KPHI.FR.Y.0003.220421T0200Z-220421T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Mercer-Lehigh-Northampton- Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Trenton, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 314 AM EDT Wed Apr 20 2022 ...FROST ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 8 AM EDT THURSDAY... * WHAT...Minimum temperatures ranging from 33 to 37 degrees will result in frost formation. * WHERE...Portions of central, northern and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...From 10 PM this evening to 8 AM EDT Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...The usual cold spots across portions of northwest New Jersey and the Lehigh Valley may experience minimum temperatures near to a few degrees below freezing locally. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Staarmann
4 follow-up statements
431 WWUS71 KPHI 201905 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 305 PM EDT Wed Apr 20 2022 NJZ001-007>010-015-PAZ061-062-103-105-106-211200- /O.CON.KPHI.FR.Y.0003.220421T0200Z-220421T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Mercer-Lehigh-Northampton- Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Trenton, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 305 PM EDT Wed Apr 20 2022 ...FROST ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO 8 AM EDT THURSDAY... * WHAT...A light wind and minimum temperatures ranging from 33 to 37 degrees will allow for the development of frost. * WHERE...Parts of northern and central New Jersey. Also, the Lehigh Valley and parts of southeastern Pennsylvania. * WHEN...From 10:00 PM this evening until 8:00 AM Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Iovino
522 WWUS71 KPHI 210508 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 108 AM EDT Thu Apr 21 2022 NJZ001-007>010-015-PAZ061-062-103-105-106-211200- /O.CON.KPHI.FR.Y.0003.000000T0000Z-220421T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Mercer-Lehigh-Northampton- Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Trenton, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 108 AM EDT Thu Apr 21 2022 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...Portions of central, northern and northwest New Jersey and east central and southeast Pennsylvania. * 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. && $$ MPS
863 WWUS71 KPHI 210716 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 316 AM EDT Thu Apr 21 2022 NJZ001-007>010-015-PAZ061-062-103-105-106-211200- /O.CON.KPHI.FR.Y.0003.000000T0000Z-220421T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Mercer-Lehigh-Northampton- Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Trenton, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 316 AM EDT Thu Apr 21 2022 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of central, northern and northwest New Jersey and east central and southeast Pennsylvania. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MPS
803 WWUS71 KPHI 211033 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 633 AM EDT Thu Apr 21 2022 NJZ001-007>010-015-PAZ061-062-103-105-106-211145- /O.CAN.KPHI.FR.Y.0003.000000T0000Z-220421T1200Z/ Sussex-Warren-Morris-Hunterdon-Somerset-Mercer-Lehigh-Northampton- Western Montgomery-Upper Bucks-Lower Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Somerville, Trenton, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, Perkasie, Morrisville, and Doylestown 633 AM EDT Thu Apr 21 2022 ...FROST ADVISORY IS CANCELLED... Temperatures are rising through the 30s and into the low 40s, and there is increasing sunshine. Therefore, the Frost Advisory is now cancelled. $$ MPS
Nearby
Frost Advisories in New Jersey, 2022Frost Advisories in Pennsylvania, 2022Every frost advisory in 2022
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.