Area Forecast Discussion
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
083 FXUS61 KCAR 191830 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 230 PM EDT Sat Sep 19 2026 .WHAT HAS CHANGED... - Updated aviation discussion. && .KEY MESSAGES... 1) Potential for patchy frost tonight and Monday night across the north. && .DISCUSSION... KEY MESSAGE 1...Potential for patchy frost tonight and Monday night across the north. KEY MESSAGE 1 DESCRIPTION... High pressure system has settled over Quebec today. Confidence in frost potential is relatively low, since temperatures are heavily going to depend on how fast cloud deck moves in. Upper air model soundings indicate the weak winds at the surface with lower surface dewpoints. Thus, lower RH values which should keep frost potential low. Best chances for patchy frost will be in the North Woods, and Central/Southern Aroostook. High pressure will build toward the region Monday night, with clearing skies and decreasing winds. This will create favorable conditions for radiational cooling. Patchy/areas of frost are possible across northern areas later Monday night, with the better chances in the normally colder low lying areas. && .AVIATION /18Z SATURDAY THROUGH THURSDAY/... Today...VFR. Across northern areas, NW winds 10 to 15 kts with gusts up to around 20 kts. Across Downeast areas, NW winds around 10 kts, with some gusts up to 20kts. Tonight...VFR. Light and variable winds, becoming S/SE around 5 kts. Sunday...VFR early, becoming MVFR in rain showers at northern and Downeast terminals. S winds between 5 to 10kts, gusting to near 20kts Downeast. Sunday night...MVFR/IFR in patchy fog and showers. Light SSW winds becoming NW 5kts late. Monday...VFR. North/northwest winds 10 to 15 knots with gusts up to around 20 knots. Monday night...Variable conditions in any patchy fog late. Otherwise, VFR. North/northwest winds 5 to 10 knots. Tuesday through Thursday...Variable conditions in any patchy late night fog. Otherwise, VFR. North/northeast winds 5 to 10 knots Tuesday through Thursday. && .MARINE... Seas will remain below 5ft across all waters through Wednesday. SSW winds this afternoon into Sunday, shifting N by Monday. Rain showers moving in late Sunday evening. Patchy fog possible Sunday night. Wind gusts increase to 20-25 kts over waters 25-60NM Monday morning into Tuesday afternoon. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...None. && $$ DISCUSSION...ASB/CN AVIATION...ASB/CN