Alert archive / New Jersey / Frost Advisories in 2022
Frost Advisory 7, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Oct 20, 2022, 12:56 PM EDT for 8 counties in New Jersey; Bucks County, Delaware County, Montgomery County, Pennsylvania; New Castle County, Delaware. It took effect at Oct 21, 2022, 12:00 AM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Oct 20, 2022, 12:56 PM EDT (16:56 UTC)
- In effect from
- Oct 21, 2022, 12:00 AM EDT
- Expired
- Oct 21, 2022, 9:00 AM EDT
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Salem County, NJ, Bucks County, PA, Delaware County, PA, Montgomery County, PA
The radar
The Philadelphia radar (KDIX), 51 km from the middle of the area, began a volume at 17:00 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 12:00Z, 4.9 hours before the alert went out and 208 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
- 1118 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
103 WWUS71 KPHI 201656 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 1256 PM EDT Thu Oct 20 2022 DEZ001-NJZ012-013-015>019-021-PAZ070-104-106-211000- /O.NEW.KPHI.FR.Y.0007.221021T0400Z-221021T1300Z/ New Castle-Middlesex-Western Monmouth-Mercer-Salem-Gloucester- Camden-Northwestern Burlington-Cumberland-Delaware- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Millville, Media, Norristown, Lansdale, Morrisville, and Doylestown 1256 PM EDT Thu Oct 20 2022 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT FRIDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Portions of northern Delaware, central, northern and southern New Jersey and southeast Pennsylvania. * WHEN...From midnight tonight to 9 AM EDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
2 follow-up statements
672 WWUS71 KPHI 210749 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 349 AM EDT Fri Oct 21 2022 DEZ001-NJZ012-013-015>019-021-PAZ070-104-106-211300- /O.CON.KPHI.FR.Y.0007.000000T0000Z-221021T1300Z/ New Castle-Middlesex-Western Monmouth-Mercer-Salem-Gloucester- Camden-Northwestern Burlington-Cumberland-Delaware- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Millville, Media, Norristown, Lansdale, Morrisville, and Doylestown 349 AM EDT Fri Oct 21 2022 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures as low as 33 degrees will result in frost formation. * WHERE...Portions of northern Delaware, central, northern and southern New Jersey and southeast Pennsylvania. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Staarmann
366 WWUS71 KPHI 211236 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 836 AM EDT Fri Oct 21 2022 DEZ001-NJZ012-013-015>019-021-PAZ070-104-106-211345- /O.EXP.KPHI.FR.Y.0007.000000T0000Z-221021T1300Z/ New Castle-Middlesex-Western Monmouth-Mercer-Salem-Gloucester- Camden-Northwestern Burlington-Cumberland-Delaware- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Millville, Media, Norristown, Lansdale, Morrisville, and Doylestown 836 AM EDT Fri Oct 21 2022 ...FROST ADVISORY WILL EXPIRE AT 9 AM EDT THIS MORNING... Temperatures are warming up. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 20, 3:51 AM EDT | Small Craft Advisory | PHI | 20 hr |
Nearby
Frost Advisories in New Jersey, 2022Frost Advisories in Pennsylvania, 2022Frost Advisories in Delaware, 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.