Alert archive / New Jersey / Frost Advisories in 2020
Frost Advisory 8, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at May 13, 2020, 2:20 PM EDT for 5 counties in Pennsylvania; 9 counties in New Jersey. It took effect at May 14, 2020, 1:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- May 13, 2020, 2:20 PM EDT (18:20 UTC)
- In effect from
- May 14, 2020, 1:00 AM EDT
- Expired
- May 14, 2020, 8:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Atlantic County, NJ, Burlington County, NJ, Cumberland County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ, Berks County, PA, Bucks County, PA, Lehigh County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 58 km from the middle of the area, began a volume at 18:25 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, 6.3 hours before the alert went out and 186 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
- 1483 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
003 WWUS71 KPHI 131820 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 220 PM EDT Wed May 13 2020 NJZ001-PAZ055-140800- /O.UPG.KPHI.FZ.A.0004.200514T0600Z-200514T1200Z/ /O.NEW.KPHI.FZ.W.0010.200514T0300Z-200514T1200Z/ Sussex-Monroe- Including the cities of Newton and Stroudsburg 220 PM EDT Wed May 13 2020 ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...In New Jersey, Sussex. In Pennsylvania, Monroe. * WHEN...From 11 PM this evening to 8 AM EDT Thursday. * 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. && $$ NJZ007-PAZ054-140800- /O.NEW.KPHI.FZ.W.0010.200514T0300Z-200514T1200Z/ Warren-Carbon- Including the cities of Washington and Jim Thorpe 220 PM EDT Wed May 13 2020 ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...In New Jersey, Warren. In Pennsylvania, Carbon. * WHEN...From 11 PM this evening to 8 AM EDT Thursday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ020-140800- /O.NEW.KPHI.FZ.W.0010.200514T0500Z-200514T1200Z/ Ocean- Including the city of Jackson 220 PM EDT Wed May 13 2020 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 8 AM EDT THURSDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Ocean. * WHEN...From 1 AM to 8 AM EDT Thursday. * 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. && $$ NJZ008>010-012-013-015-019-021-022-027-PAZ060>062-103-105-140800- /O.NEW.KPHI.FR.Y.0008.200514T0500Z-200514T1200Z/ Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Mercer- Northwestern Burlington-Cumberland-Atlantic- Southeastern Burlington-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks- Including the cities of Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Moorestown, Mount Holly, Millville, Hammonton, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, and Perkasie 220 PM EDT Wed May 13 2020 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM EDT THURSDAY... * WHAT...Low temperatures of 33 to 36 degrees will result in frost formation. * WHERE...Portions of central, northern, northwest and southern New Jersey and east central and southeast Pennsylvania. * WHEN...From 1 AM to 8 AM EDT Thursday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...Some localized areas near or just below freezing are possible, especially in lower elevation areas and valleys. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Staarmann
1 follow-up statement
340 WWUS71 KPHI 140732 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 332 AM EDT Thu May 14 2020 NJZ001-007-PAZ054-055-141200- /O.CON.KPHI.FZ.W.0010.000000T0000Z-200514T1200Z/ Sussex-Warren-Carbon-Monroe- Including the cities of Newton, Washington, Jim Thorpe, and Stroudsburg 332 AM EDT Thu May 14 2020 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...In New Jersey, Sussex and Warren Counties. In Pennsylvania, Carbon and Monroe Counties. * WHEN...Until 8 AM EDT this morning. * 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. && $$ NJZ020-141200- /O.CON.KPHI.FZ.W.0010.000000T0000Z-200514T1200Z/ Ocean- Including the city of Jackson 332 AM EDT Thu May 14 2020 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30. * WHERE...Ocean County. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ008>010-012-013-015-019-021-022-027-PAZ060>062-103-105-141200- /O.CON.KPHI.FR.Y.0008.000000T0000Z-200514T1200Z/ Morris-Hunterdon-Somerset-Middlesex-Western Monmouth-Mercer- Northwestern Burlington-Cumberland-Atlantic- Southeastern Burlington-Berks-Lehigh-Northampton- Western Montgomery-Upper Bucks- Including the cities of Morristown, Flemington, Somerville, New Brunswick, Freehold, Trenton, Moorestown, Mount Holly, Millville, Hammonton, Wharton State Forest, Reading, Allentown, Bethlehem, Easton, Collegeville, Pottstown, Chalfont, and Perkasie 332 AM EDT Thu May 14 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Low temperatures this morning of 33 to 36 degrees will result in frost formation. * 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 could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 9:29 AM EDT | Freeze Watch | PHI | Monroe | 5 hr |
| May 13, 2:20 PM EDT | Freeze Warning | PHI | Carbon, Monroe | 18 hr |
Nearby
Frost Advisories in New Jersey, 2020Frost Advisories in Pennsylvania, 2020Every frost advisory 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; radar from the NEXRAD Level II archive.