Alert archive / Pennsylvania / Freeze Warnings in 2020
Freeze Warning 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this freeze warning at May 7, 2020, 3:46 PM EDT for 8 counties in Pennsylvania; 4 counties in New Jersey. It took effect at May 8, 2020, 11:00 PM EDT. It was in force for 10 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
- May 7, 2020, 3:46 PM EDT (19:46 UTC)
- In effect from
- May 8, 2020, 11:00 PM EDT
- Expired
- May 9, 2020, 8:51 AM EDT
- In force
- 10 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Hunterdon County, NJ, Morris County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 106 km from the middle of the area, began a volume at 19:45 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, 7.8 hours before the alert went out and 204 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
- 1238 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
034 WWUS71 KPHI 071946 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 346 PM EDT Thu May 7 2020 PAZ054-055-080900- /O.NEW.KPHI.FZ.W.0006.200509T0300Z-200509T1300Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 346 PM EDT Thu May 7 2020 ...FREEZE WARNING IN EFFECT FROM 11 PM FRIDAY TO 9 AM EDT SATURDAY... * WHAT...Sub-freezing temperatures as low as the upper 20s expected. * WHERE...Carbon and Monroe. * WHEN...From 11 PM Friday to 9 AM EDT Saturday. * IMPACTS...Freezing conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ001-007>009-PAZ060>062-101-103-105-080900- /O.NEW.KPHI.FZ.A.0003.200509T0300Z-200509T1300Z/ Sussex-Warren-Morris-Hunterdon-Berks-Lehigh-Northampton- Western Chester-Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 346 PM EDT Thu May 7 2020 ...FREEZE WATCH IN EFFECT FROM FRIDAY EVENING THROUGH SATURDAY MORNING... * WHAT...Sub-freezing temperatures as low as 30-32 degrees possible. * WHERE...In New Jersey, Sussex, Warren, Morris and Hunterdon. In Pennsylvania, Berks, Lehigh, Northampton, Western Chester, Western Montgomery and Upper Bucks. * WHEN...From late Friday evening through Saturday morning. * IMPACTS...Frost and freeze conditions may kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
4 follow-up statements
359 WWUS71 KPHI 080741 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 341 AM EDT Fri May 8 2020 NJZ001-007>009-PAZ060>062-101-103-105-082045- /O.UPG.KPHI.FZ.A.0003.200509T0300Z-200509T1300Z/ /O.EXA.KPHI.FZ.W.0006.200509T0300Z-200509T1300Z/ Sussex-Warren-Morris-Hunterdon-Berks-Lehigh-Northampton- Western Chester-Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 341 AM EDT Fri May 8 2020 ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 9 AM EDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 31 expected. * WHERE...In New Jersey, Sussex, Warren, Morris and Hunterdon. In Pennsylvania, Berks, Lehigh, Northampton, Western Chester, Western Montgomery and Upper Bucks. * WHEN...From 11 PM this evening to 9 AM EDT Saturday. * 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. && $$ PAZ054-055-082045- /O.CON.KPHI.FZ.W.0006.200509T0300Z-200509T1300Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 341 AM EDT Fri May 8 2020 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM EDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...Carbon and Monroe. * WHEN...From 11 PM this evening to 9 AM EDT Saturday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$
524 WWUS71 KPHI 081946 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 346 PM EDT Fri May 8 2020 NJZ001-007>009-PAZ054-055-060>062-101-103-105-091300- /O.CON.KPHI.FZ.W.0006.200509T0300Z-200509T1300Z/ Sussex-Warren-Morris-Hunterdon-Carbon-Monroe-Berks-Lehigh- Northampton-Western Chester-Western Montgomery-Upper Bucks- Including the cities of Newton, Washington, Morristown, Flemington, Jim Thorpe, Stroudsburg, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 346 PM EDT Fri May 8 2020 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM EDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...In New Jersey, Sussex, Warren, Morris and Hunterdon. In Pennsylvania, Berks, Carbon, Lehigh, Monroe, Northampton, Western Chester, Western Montgomery and Upper Bucks. * WHEN...From 11 PM this evening to 9 AM EDT Saturday. * 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. && $$
794 WWUS71 KPHI 090746 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 346 AM EDT Sat May 9 2020 NJZ001-PAZ054-055-091815- /O.NEW.KPHI.FZ.W.0007.200510T0300Z-200510T1300Z/ /O.CON.KPHI.FZ.W.0006.000000T0000Z-200509T1300Z/ Sussex-Carbon-Monroe- Including the cities of Newton, Jim Thorpe, and Stroudsburg 346 AM EDT Sat May 9 2020 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 9 AM EDT SUNDAY... * WHAT...For the first Freeze Warning, sub-freezing temperatures as low as 28. For the second Freeze Warning, sub-freezing temperatures as low as 30 expected. * WHERE...In New Jersey, Sussex. In Pennsylvania, Carbon and Monroe. * WHEN...For the first Freeze Warning, until 9 AM EDT this morning. For the second Freeze Warning, from 11 PM this evening to 9 AM EDT Sunday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ007>009-PAZ060>062-101-103-105-091300- /O.CON.KPHI.FZ.W.0006.000000T0000Z-200509T1300Z/ Warren-Morris-Hunterdon-Berks-Lehigh-Northampton-Western Chester- Western Montgomery-Upper Bucks- Including the cities of Washington, Morristown, Flemington, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 346 AM EDT Sat May 9 2020 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...In New Jersey, Warren, Morris and Hunterdon. In Pennsylvania, Berks, Lehigh, Northampton, Western Chester, Western Montgomery and Upper Bucks. * WHEN...Until 9 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. && $$
883 WWUS71 KPHI 091251 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 851 AM EDT Sat May 9 2020 NJZ001-PAZ054-055-100200- /O.CAN.KPHI.FZ.W.0006.000000T0000Z-200509T1300Z/ /O.CON.KPHI.FZ.W.0007.200510T0300Z-200510T1300Z/ Sussex-Carbon-Monroe- Including the cities of Newton, Jim Thorpe, and Stroudsburg 851 AM EDT Sat May 9 2020 ...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 9 AM EDT SUNDAY... ...FREEZE WARNING IS CANCELLED... * WHAT...Sub-freezing temperatures as low as 32 expected. * WHERE...In New Jersey, Sussex. In Pennsylvania, Carbon and Monroe. * WHEN...From 11 PM this evening to 9 AM EDT Sunday. * IMPACTS...Frost and freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NJZ007>009-PAZ060>062-101-103-105-091400- /O.CAN.KPHI.FZ.W.0006.000000T0000Z-200509T1300Z/ Warren-Morris-Hunterdon-Berks-Lehigh-Northampton-Western Chester- Western Montgomery-Upper Bucks- Including the cities of Washington, Morristown, Flemington, Reading, Allentown, Bethlehem, Easton, Honey Brook, Oxford, Collegeville, Pottstown, Chalfont, and Perkasie 851 AM EDT Sat May 9 2020 ...FREEZE WARNING IS CANCELLED... Although conditions remain quite chilly with temps in the low 30s and wind gusts up to 30 mph the additional threat to sensitive vegetation will shortly come to an end. Temperatures should warm into the low to mid 40s this afternoon. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 3:46 PM EDT | Freeze Watch | PHI | Berks, Bucks, Chester, Lehigh, Montgomery, Northampton | 12 hr |
| May 7, 3:05 AM EDT | Gale Watch | PHI | 25 hr | |
| May 7, 3:43 PM EDT | Small Craft Advisory | PHI | 32 hr |
Nearby
Freeze Warnings in Pennsylvania, 2020Freeze Warnings in New Jersey, 2020Every freeze warning 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.