Alert archive / New Jersey / Frost Advisories in 2020
Frost Advisory 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Apr 27, 2020, 3:12 PM EDT for Morris County, Sussex County, Warren County, New Jersey; Lehigh County, Northampton County, Pennsylvania. It took effect at Apr 28, 2020, 2:00 AM EDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Apr 27, 2020, 3:12 PM EDT (19:12 UTC)
- In effect from
- Apr 28, 2020, 2:00 AM EDT
- Expired
- Apr 28, 2020, 7:45 AM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Lehigh County, PA, Northampton County, PA
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.2 hours before the alert went out and 182 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
- 490 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
943 WWUS71 KPHI 271912 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 312 PM EDT Mon Apr 27 2020 NJZ001-007-008-PAZ061-062-280815- /O.NEW.KPHI.FR.Y.0005.200428T0600Z-200428T1200Z/ Sussex-Warren-Morris-Lehigh-Northampton- Including the cities of Newton, Washington, Morristown, Allentown, Bethlehem, and Easton 312 PM EDT Mon Apr 27 2020 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT TUESDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In New Jersey, Sussex, Warren and Morris. In Pennsylvania, Lehigh and Northampton. * WHEN...From 2 AM to 8 AM EDT Tuesday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
2 follow-up statements
707 WWUS71 KPHI 280737 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 337 AM EDT Tue Apr 28 2020 NJZ001-007-008-PAZ061-062-281200- /O.CON.KPHI.FR.Y.0005.000000T0000Z-200428T1200Z/ Sussex-Warren-Morris-Lehigh-Northampton- Including the cities of Newton, Washington, Morristown, Allentown, Bethlehem, and Easton 337 AM EDT Tue Apr 28 2020 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...In New Jersey, Morris, Sussex and Warren. In Pennsylvania, Lehigh and Northampton. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
859 WWUS71 KPHI 281145 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 745 AM EDT Tue Apr 28 2020 NJZ001-007-008-PAZ061-062-281245- /O.CAN.KPHI.FR.Y.0005.000000T0000Z-200428T1200Z/ Sussex-Warren-Morris-Lehigh-Northampton- Including the cities of Newton, Washington, Morristown, Allentown, Bethlehem, and Easton 745 AM EDT Tue Apr 28 2020 ...FROST ADVISORY IS CANCELLED... Temperatures are rising and frost will no longer pose a concern. The advisory is cancelled. $$ JEO
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.