Alert archive / Pennsylvania / Frost Advisories in 2020
Frost Advisory 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Sep 19, 2020, 2:46 PM EDT for 4 counties in Pennsylvania; Sussex County, Warren County, New Jersey. It took effect at Sep 20, 2020, 1:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Sep 19, 2020, 2:46 PM EDT (18:46 UTC)
- In effect from
- Sep 20, 2020, 1:00 AM EDT
- Expired
- Sep 20, 2020, 8:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 128 km from the middle of the area, began a volume at 18:45 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, 6.8 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1449 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- -100 m²/s²
- 0-3 km storm-relative helicity
- -52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
278 WWUS71 KPHI 191846 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 246 PM EDT Sat Sep 19 2020 NJZ001-PAZ054-055-201200- /O.NEW.KPHI.FR.Y.0009.200920T0500Z-200920T1200Z/ Sussex-Carbon-Monroe- Including the cities of Newton, Jim Thorpe, and Stroudsburg 246 PM EDT Sat Sep 19 2020 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM EDT SUNDAY... * WHAT...Temperatures between 32 and 36 degrees will result in frost formation. * WHERE...In New Jersey, Sussex County. In Pennsylvania, Carbon and Monroe Counties. * WHEN...From 1 AM to 8 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
3 follow-up statements
595 WWUS71 KPHI 192212 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 612 PM EDT Sat Sep 19 2020 NJZ007-PAZ061-062-201115- /O.EXA.KPHI.FR.Y.0009.200920T0500Z-200920T1200Z/ Warren-Lehigh-Northampton- Including the cities of Washington, Allentown, Bethlehem, and Easton 612 PM EDT Sat Sep 19 2020 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM EDT SUNDAY... * WHAT...Temperatures as low as 35 will result in frost formation. * WHERE...In New Jersey, Warren. In Pennsylvania, Lehigh and Northampton. * WHEN...From 1 AM to 8 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ001-PAZ054-055-201115- /O.CON.KPHI.FR.Y.0009.200920T0500Z-200920T1200Z/ Sussex-Carbon-Monroe- Including the cities of Newton, Jim Thorpe, and Stroudsburg 612 PM EDT Sat Sep 19 2020 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM EDT SUNDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...In New Jersey, Sussex. In Pennsylvania, Carbon and Monroe. * WHEN...From 1 AM to 8 AM EDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * ADDITIONAL DETAILS...Sheltered valleys in the southern Poconos may get down to right around freezing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Johnson
800 WWUS71 KPHI 201026 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 626 AM EDT Sun Sep 20 2020 NJZ001-007-PAZ054-055-061-062-201200- /O.CON.KPHI.FR.Y.0009.000000T0000Z-200920T1200Z/ Sussex-Warren-Carbon-Monroe-Lehigh-Northampton- Including the cities of Newton, Washington, Jim Thorpe, Stroudsburg, Allentown, Bethlehem, and Easton 626 AM EDT Sun Sep 20 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures near freezing will result in frost formation. * WHERE...In New Jersey, Sussex and Warren Counties. In Pennsylvania, Carbon, Northampton, Lehigh, and Monroe Counties. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CMS
374 WWUS71 KPHI 201154 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 754 AM EDT Sun Sep 20 2020 NJZ001-007-PAZ054-055-061-062-201300- /O.EXP.KPHI.FR.Y.0009.000000T0000Z-200920T1200Z/ Sussex-Warren-Carbon-Monroe-Lehigh-Northampton- Including the cities of Newton, Washington, Jim Thorpe, Stroudsburg, Allentown, Bethlehem, and Easton 754 AM EDT Sun Sep 20 2020 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures continue to warm up this morning, and any frost will melt off. $$ MPS
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 4:21 AM EDT | Rip Current Statement | PHI | Atlantic, Cape May, Monmouth, Ocean | 5 days |
| Sep 19, 3:36 PM EDT | Coastal Flood Advisory | PHI | Atlantic, Cape May | 23 hr |
| Sep 19, 6:19 PM EDT | High Surf Advisory | PHI | Atlantic, Cape May, Monmouth, Ocean | 3 days |
Nearby
Frost Advisories in Pennsylvania, 2020Frost Advisories in New Jersey, 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.