Alert archive / Pennsylvania / Freeze Warnings in 2022
Freeze Warning 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this freeze warning at Oct 18, 2022, 3:42 AM EDT for 6 counties in Pennsylvania; 4 counties in New Jersey. It took effect at Oct 19, 2022, 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
- Oct 18, 2022, 3:42 AM EDT (07:42 UTC)
- In effect from
- Oct 19, 2022, 12:00 AM EDT
- Expired
- Oct 19, 2022, 9:00 AM EDT
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Burlington County, NJ, Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Berks County, PA, Bucks County, PA, Chester County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 07:43 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, 7.7 hours before the alert went out and 202 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
- 264 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 628 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 226 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.2
The text
As transmitted.
397 WWUS71 KPHI 180742 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 342 AM EDT Tue Oct 18 2022 NJZ008>010-PAZ060>062-101-103-105-182200- /O.NEW.KPHI.FZ.W.0004.221019T0400Z-221019T1300Z/ Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton- Western Chester-Western Montgomery-Upper Bucks- Including the cities of Morristown, Flemington, Somerville, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 342 AM EDT Tue Oct 18 2022 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...Temperatures in the lower 30s. * WHERE...The New Jersey counties of Morris, Hunterdon and Somerset. The Pennsylvania counties of Berks, Lehigh, Northampton, western Chester, upper Montgomery and upper Bucks. * WHEN...From midnight tonight until 9:00 AM Wednesday. * IMPACTS...Frost and freezing conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect sensitive plants from the cold. && $$ DEZ001>003-MDZ012-015-020-NJZ012-013-015>022-027-PAZ070-071-102- 104-106-182200- /O.NEW.KPHI.FR.Y.0005.221019T0400Z-221019T1300Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Caroline- Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic- Southeastern Burlington-Delaware-Philadelphia-Eastern Chester- Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Chestertown, Centreville, Denton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Wharton State Forest, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 342 AM EDT Tue Oct 18 2022 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...Temperatures in the middle 30s and a light wind will allow for the development of frost. * WHERE...Parts of southeastern Pennsylvania, central and southern New Jersey, Delaware and eastern Maryland. * WHEN...From midnight tonight until 9:00 AM Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect sensitive plants from the cold. && $$ Iovino
3 follow-up statements
101 WWUS71 KPHI 181850 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 250 PM EDT Tue Oct 18 2022 NJZ027-190800- /O.UPG.KPHI.FR.Y.0005.221019T0400Z-221019T1300Z/ /O.EXA.KPHI.FZ.W.0004.221019T0400Z-221019T1300Z/ Southeastern Burlington- Including the city of Wharton State Forest 250 PM EDT Tue Oct 18 2022 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...Temperatures in the lower 30s. * WHERE...Southeastern Burlington County. * WHEN...From midnight tonight to 9 AM EDT Wednesday. * 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. && $$ NJZ008>010-PAZ060>062-101-103-105-190800- /O.CON.KPHI.FZ.W.0004.221019T0400Z-221019T1300Z/ Morris-Hunterdon-Somerset-Berks-Lehigh-Northampton- Western Chester-Western Montgomery-Upper Bucks- Including the cities of Morristown, Flemington, Somerville, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 250 PM EDT Tue Oct 18 2022 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...Temperatures in the lower 30s. * WHERE...In New Jersey, Morris, Hunterdon and Somerset. In Pennsylvania, Berks, Lehigh, Northampton, Western Chester, Western Montgomery and Upper Bucks. * WHEN...From midnight tonight to 9 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ DEZ001>003-MDZ012-015-020-NJZ012-013-015>022-PAZ070-071-102-104- 106-190800- /O.CON.KPHI.FR.Y.0005.221019T0400Z-221019T1300Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Caroline- Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Delaware- Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Chestertown, Centreville, Denton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 250 PM EDT Tue Oct 18 2022 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...Temperatures in the low to mid 30s will result in frost formation. * WHERE...Portions of central, northern and southern Delaware, northeast Maryland, central, northern and southern New Jersey and southeast Pennsylvania. * WHEN...From midnight tonight to 9 AM EDT Wednesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
452 WWUS71 KPHI 190602 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 202 AM EDT Wed Oct 19 2022 NJZ008>010-027-PAZ060>062-101-103-105-191300- /O.CON.KPHI.FZ.W.0004.000000T0000Z-221019T1300Z/ Morris-Hunterdon-Somerset-Southeastern Burlington-Berks-Lehigh- Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Morristown, Flemington, Somerville, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 202 AM EDT Wed Oct 19 2022 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures in the lower 30s. * WHERE...The New Jersey counties of Morris, Hunterdon, Somerset and southeastern Burlington. The Pennsylvania counties of Berks, Lehigh, Northampton, western Chester, upper Montgomery and upper Bucks. * WHEN...Until 9:00 AM this morning. * IMPACTS...Frost and freezing conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Protect sensitive plants from the cold. && $$ DEZ001>003-MDZ012-015-020-NJZ012-013-015>022-PAZ070-071-102-104- 106-191300- /O.CON.KPHI.FR.Y.0005.000000T0000Z-221019T1300Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Caroline- Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Delaware- Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Chestertown, Centreville, Denton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 202 AM EDT Wed Oct 19 2022 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Temperatures in the middle 30s and a light wind will allow for the development of frost. * WHERE...Parts of southeastern Pennsylvania, central and southern New Jersey, Delaware and eastern Maryland. * WHEN...Until 9:00 AM this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left unprotected. PRECAUTIONARY/PREPAREDNESS ACTIONS... Protect sensitive plants from the cold. && $$ Iovino
496 WWUS71 KPHI 191239 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 839 AM EDT Wed Oct 19 2022 NJZ008>010-027-PAZ060>062-101-103-105-191345- /O.EXP.KPHI.FZ.W.0004.000000T0000Z-221019T1300Z/ Morris-Hunterdon-Somerset-Southeastern Burlington-Berks-Lehigh- Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Morristown, Flemington, Somerville, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 839 AM EDT Wed Oct 19 2022 ...FREEZE WARNING WILL EXPIRE AT 9 AM EDT THIS MORNING... Temperatures are starting to warm up. $$ DEZ001>003-MDZ012-015-020-NJZ012-013-015>022-PAZ070-071-102-104- 106-191345- /O.EXP.KPHI.FR.Y.0005.000000T0000Z-221019T1300Z/ New Castle-Kent-Inland Sussex-Kent MD-Queen Annes-Caroline- Middlesex-Western Monmouth-Mercer-Salem-Gloucester-Camden- Northwestern Burlington-Ocean-Cumberland-Atlantic-Delaware- Philadelphia-Eastern Chester-Eastern Montgomery-Lower Bucks- Including the cities of Wilmington, Dover, Georgetown, Chestertown, Centreville, Denton, New Brunswick, Freehold, Trenton, Pennsville, Glassboro, Camden, Cherry Hill, Moorestown, Mount Holly, Jackson, Millville, Hammonton, Media, Philadelphia, West Chester, Kennett Square, Norristown, Lansdale, Morrisville, and Doylestown 839 AM EDT Wed Oct 19 2022 ...FROST ADVISORY WILL EXPIRE AT 9 AM EDT THIS MORNING... Temperatures are starting to warm up. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 18, 3:42 AM EDT | Frost Advisory | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 29 hr |
| Oct 17, 8:34 PM EDT | Special Marine Warning | PHI | 86 min |
Nearby
Freeze Warnings in Pennsylvania, 2022Freeze Warnings in New Jersey, 2022Every freeze warning 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.