Alert archive / Pennsylvania / Frost Advisories in 2026
Frost Advisory 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Apr 30, 2026, 2:15 PM EDT for Carbon County, Monroe County, Pennsylvania. It took effect at Apr 30, 2026, 11:00 PM EDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Apr 30, 2026, 2:15 PM EDT (18:15 UTC)
- In effect from
- Apr 30, 2026, 11:00 PM EDT
- Expired
- May 1, 2026, 8:00 AM EDT
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Carbon County, PA, Monroe County, PA
The radar
The Binghamton radar (KBGM), 140 km from the middle of the area, began a volume at 18:15 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 224 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
- 548 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
867 WWUS71 KPHI 301815 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 215 PM EDT Thu Apr 30 2026 PAZ054-055-010715- /O.NEW.KPHI.FR.Y.0004.260501T0300Z-260501T1200Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 215 PM EDT Thu Apr 30 2026 ...FROST ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 8 AM EDT FRIDAY... * WHAT...Temperatures as low as 31, combined with light winds, will result in patchy frost formation. * WHERE...Carbon and Monroe Counties. * WHEN...From 11 PM this evening to 8 AM EDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Deal
2 follow-up statements
879 WWUS71 KPHI 010633 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 233 AM EDT Fri May 1 2026 PAZ054-055-011200- /O.CON.KPHI.FR.Y.0004.000000T0000Z-260501T1200Z/ Carbon-Monroe- Including the cities of Stroudsburg and Jim Thorpe 233 AM EDT Fri May 1 2026 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...Temperatures as low as 31 will result in patchy frost formation. * WHERE...Carbon and Monroe Counties. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MPS
993 WWUS71 KPHI 011130 NPWPHI URGENT - WEATHER MESSAGE National Weather Service Mount Holly NJ 730 AM EDT Fri May 1 2026 PAZ054-055-011230- /O.EXP.KPHI.FR.Y.0004.000000T0000Z-260501T1200Z/ Carbon-Monroe- Including the cities of Jim Thorpe and Stroudsburg 730 AM EDT Fri May 1 2026 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... Temperatures are warming. $$ RCM
What forecasters said that day
The local office's own words before this frost advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this frost advisory went out at Apr 30, 11:58 AM EDT, 2 hours 17 minutes earlier. Its key messages:
- 1. Weak low pressure passes through the region Friday night. A stronger area of low pressure passes south and east of the coast on Saturday.
Area forecast discussion, Apr 30, 11:58 AM EDT, 2 hours 17 minutes before
Area Forecast Discussion National Weather Service Mount Holly NJ 1158 AM EDT Thu Apr 30 2026 .WHAT HAS CHANGED... The Coastal Flood Advisory is no longer in effect for the tidal Delaware River and its tributaries. && .KEY MESSAGES... 1. Weak low pressure passes through the region Friday night. A stronger area of low pressure passes south and east of the coast on Saturday. && .DISCUSSION... KEY MESSAGE 1...Weak low pressure passes through the region Friday night. A stronger area of low pressure passes south and east of the coast on Saturday. Weak low pressure passes through the region Friday night, bringing a quick shot of light precipitation. A deep upper trough digs through the Midwest and Gulf Coast states. Surface low pressure then develops over the Southeast United States, and then lifts north towards the Mid-Atlantic during the day Saturday. The low then tracks east Sunday night. Wraparound rain will spread back towards the coast, but the trend is for the heaviest rain to remain offshore. The highest PoPs will be over Delaware and extreme southeast New Jersey. Cloudy skies and onshore flow will keep temperatures in the 50s to low 60s. && .AVIATION /12Z THURSDAY THROUGH MONDAY/... The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG, KMIV, KACY and surrounding areas. Today...MVFR/IFR cigs to start but conditions improve through the morning with all sites expected to be VFR by around midday. VFR. NW wind generally around 10 to 15 knots with gusts up to 25 knots. Tonight...VFR with NW winds generally 5-10kts. Outlook... Friday through Friday night...VFR during the day, then sub-VFR possible at night in RA. Saturday through Saturday night...Sub-VFR possible in RA. Sunday through Monday...VFR. && .MARINE... Sub-SCA conditions expected through overnight. Winds will be mainly SE 10 to 15 kts into the early overnight period. Winds will then turn SW followed by a further turn to NW around dawn. Low-end SCA gusts possible, but not certain. Showers through the overnight becoming more scattered by dawn. Confidence is low for SCA conditions on Thursday with mainly 3 to 5 ft seas. Outlook... Friday through Monday...Sub-SCA conditions Friday and Saturday. A brief period of SCA conditions possible on Sunday, and then widespread SCA conditions possible Monday afternoon. && .PHI WATCHES/WARNINGS/ADVISORIES... PA...None. NJ...None. DE...None. MD...None. MARINE...None. && DISCUSSION...MPS/OHara AVIATION...Deal/MPS/OHara MARINE...MPS/OHara
Hazardous weather outlook, Apr 30, 5:06 AM EDT, 9 hours 9 minutes before
Hazardous Weather Outlook National Weather Service Mount Holly NJ 506 AM EDT Thu Apr 30 2026 MDZ012-015-019-020-010915- Kent MD-Queen Annes-Talbot-Caroline- 506 AM EDT Thu Apr 30 2026 This Hazardous Weather Outlook is for northeast Maryland. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Nearby
Frost Advisories in Pennsylvania, 2026Every frost advisory in 2026
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.