


Area Forecast Discussion
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
865 FXUS61 KCAR 221846 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 246 PM EDT Fri Aug 22 2025 .SYNOPSIS... High pressure will begin to slide east of the area tonight as Hurricane Erin tracks well to the south and east of Nova Scotia into the Open Atlantic. A warm front will lift north of the area Saturday. && .NEAR TERM /THROUGH SATURDAY NIGHT/... Sunny skies for most of Northern and Eastern Maine this afternoon due to high pressure and subsidence from Hurricane Erin passing far to the south of Maine. The exception is an area of cumulus clouds roughly along Interstate 95. This is due to some localized convergence. Dew point temperatures are in the 40s to near 50 degrees across the area. Please see the Fire Weather section for more details. High pressure begins to slide east of the area tonight, and a warm front approaches northern Maine from the west. The front could bring a few showers to the Crown of Maine late tonight into Saturday morning. Otherwise, dry weather will continue through Saturday. Clouds increase over the Crown of Maine tonight, while areas further south remain mostly clear. Patchy fog possible in valleys from around Houlton southward late tonight. Lows tonight will be milder than recent nights, with most places staying in the 50s. Highs on Saturday will warm into the lower to mid 80s outside of Downeast. Increasing southerly winds will keep highs in the 70s Downeast. Winds will gust 20-25 mph for much of the area Saturday. A few gusts to 30 mph are possible near Bangor and Downeast. A cold front will begin to approach from the west Saturday night. Thinking NBM guidance is too fast bringing in PoPs to the area. Most places will remain dry Saturday night. A few showers could reach the North Woods and Saint John Valley towards daybreak Sunday. Warm air advection ahead of the front will keep lows Saturday night in the upper 50s to lower 60s. && .SHORT TERM /SUNDAY THROUGH MONDAY/... An upper level trough slowly approaches from the west Sunday and Monday, with increasing rain chances from west to east through the period. Continued with the trend of slowing down onset of rain, as models are trending just a bit slower. Sunday will probably end up being dry for all but the far northwest. Warm and breezy with south winds gusting 20-30 mph most places. A bit muggier with dewpoints in the low 50s to low 60s. Sunday night, rain gradually moves in from west to east, with Monday looking rainy for most places. Totals for the storm look the greatest in the NW, and the least for Downeast. About a 50 percent chance of exceeding an inch in the N/NW, but only about a 5 percent chance of exceeding an inch Downeast coast where the rain is needed the most. That said, around a quarter inch of rain is possible Downeast, and every little bit helps. There is a little low pressure system that passes just offshore Monday, and right now most models keep the heavier rain with this offshore, but something to watch. Could be some embedded storms late Sunday into Monday, but not anticipating anything strong. Fog likely especially near the coast Sunday night. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... Most of the rain should move off to the east Monday night. Could still be some showers or perhaps storms during the day Tuesday as the upper level trough finally nears us from the west, but things look hit and miss with chance PoPs. Relatively quiet Wednesday/Thursday with a small chance of showers mainly in the north, and temperatures fairly close to average. Model agreement goes downhill Thursday night/Friday on whether or not we get another upper trough to move through. && .AVIATION /18Z FRIDAY THROUGH WEDNESDAY/... NEAR TERM: Mainly VFR tonight, Saturday, and Saturday night. BCFG possible late tonight into early Saturday AM from KHUL southward. VCSH possible late tonight into Saturday AM from KPQI northward. VCSH possible again at FVE late Saturday night. Winds N-NE 5-10 kts, gusting 15-20 kts through 22z this evening. Light and variable winds tonight. S winds 10-15 kts Saturday into Saturday night, gusting 20-25 kts Saturday PM. LLWS possible late Saturday night. SHORT TERM: Sunday...VFR, with a small chance of MVFR. S wind gusting to 25 kts. Sunday night...MVFR or lower probable. LLWS possible. S wind gusting to 15 kts. Monday-Monday night...MVFR or lower likely. S wind gusts to 20 kts. Tuesday...VFR, with possible exception of a brief period of MVFR possible in any showers at mainly northern terminals. W wind gusting to 20 kts. Wednesday...VFR. && .MARINE... NEAR TERM: Long period (17 seconds) swells from Hurricane Erin will result in seas up to 10-11 feet this afternoon into this evening. NE wind gusts could reach up to 25kts at times through this evening, mainly on the outer waters. Seas gradually subside tonight and Saturday, but will still remain above SCA levels. Southerly winds increase to around 25kts Saturday night as high pressure moves off to the east and low pressure approaches from the west. Seas remain around 5 to 6 feet Saturday night. Thus, the SCA has been extended through Saturday night and into Sunday. SHORT TERM: Finally below small craft winds/seas Sunday night into Monday. However, perhaps small craft seas again on Tuesday and Wednesday. Marine fog likely Sunday night to Monday night. && .FIRE WEATHER... A Special Weather Statement remains in effect for Coastal Downeast through the rest of this afternoon for elevated fire danger. Dew point temperatures have dropped into the mid 40s. North to northeast winds have been sustained at 10-15 mph, with gusts up to 20 mph. Winds will diminish this evening. Saturday will feature dry conditions and southerly winds sustained at 10-15 mph across the region. Winds could gust up to 30 mph near Bangor and Downeast, and 20-25 mph elsewhere. However, the southerly winds will bring dew point temperatures into the 50s on Saturday. Thus, relative humidity values will be a bit higher than today. Sunday looks fairly similar to Saturday, except a bit breezier, but also a bit more humid near the coast. && .TIDES/COASTAL FLOODING... Long period swells from distant Hurricane Erin will produce high surf and dangerous rip currents at Atlantic Beaches into Saturday. High astronomical tides and up to 2 feet of storm surge, along with the high surf may cause minor splashover at the time of high tide Friday evening. The High Surf Advisory has been extended into Saturday evening for Coastal Downeast. No changes to the Coastal Flood Statement with this package. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...High Surf Advisory until 8 PM EDT Saturday for MEZ029-030. MARINE...Small Craft Advisory until 8 PM EDT Sunday for ANZ050>052. && $$ Near Term...Clark Short Term...Foisy Long Term...Foisy Aviation...Clark/Foisy Marine...Clark/Foisy Fire Weather...Clark/Foisy Tides/Coastal Flooding...Clark