


Area Forecast Discussion
Issued by NWS Caribou, ME
Issued by NWS Caribou, ME
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530 FXUS61 KCAR 240526 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 126 AM EDT Tue Jun 24 2025 .SYNOPSIS... An upper level ridge of high pressure will build across the area through Tuesday. A cold front will cross the area Tuesday afternoon. High pressure will build across the region Wednesday into Friday. Low pressure will cross the region Saturday. && .NEAR TERM /THROUGH TODAY/... 125 am update... Line of storms moving in from Quebec died over the Crown of Maine and updated pops to move this area out. Next area of convection moving in from the St. Lawrence is expected to hold together thru the Crown of Maine. Nrn areas are at the edge of CAPE gradient so expect this will sustain itself and have added likely showers and sctd storms to the north over the next several hours. No other chgs needed with this update. previous discussion Tonight, ridging from upper level high pressure continues to build in, as a surface low pressure system tracks into Maine from the northwest. Primary concern ahead of this system in a low-level jet that may act as a lifting mechanism for some convection in the Crown of Maine. Favorable near-storm environment lies ahead of the frontal system, with good elevated CAPE, shear, moisture, omega, and lapse rates. HiRes models have increased confidence that storms could move through overnight, with the highest threat being gusty winds and relatively heavy rainfall. Warm front comes through late tonight through early morning, so this could also act as a lifting mechanism for any storms. Overnight low temperatures in the 70s in the north, and 60s Downeast. During the day tomorrow, Maine stays between the warm front and the cold front in this aforementioned low pressure system. Weak surface trough develops through the center of the state, providing some weak lifting throughout the day. Being in the warm sector, Maine gets plenty of warm air advected into the region, resulting in some excessive heat in the 90s for most of the day. Dew-points remain high as well, leading to muggy conditions. Heat indexes in the north and the immediate coast in the mid-to-upper 90s, and in inland and central Maine potentially up to 105. Excessive heat warnings and advisory are currently in effect. Do your best to avoid strenuous outdoor activities, and ensure to stay hydrated! Southerly winds become southwesterly by Tuesday, with some heavier gusts into the afternoon period. Relatively clear skies in the south and partially cloudy in the north. There is a potential for some convection/thunderstorms during the day if there is breaks in the clouds and the surface trough provides enough lift, but confidence is relatively low at this time. There is a strong cap, that acts as the primary reason for convection inhibition. Any potential lift from the surface trough or due to surface heating could easily cause some decent storms. Favorable DCAPE and dry air aloft could cause some gusty winds coming down to the surface if convection occurs. && .SHORT TERM /TONIGHT THROUGH WEDNESDAY NIGHT/... A cold front will exit across the Gulf of Maine Tuesday night, with high pressure building toward the region late. Any remaining showers/thunderstorms will end in the wake of the front, leaving mostly clear/partly cloudy skies overnight. High pressure then builds across the region Wednesday into Thursday. Expect mostly clear skies Wednesday/Wednesday night. Expect mostly/partly sunny skies Thursday. Expect near normal level temperatures north, slightly above normal, Downeast Wednesday. Expect near normal level temperatures across the region Thursday. && .LONG TERM /THURSDAY THROUGH MONDAY/... High pressure remains across the region Thursday night with partly cloudy skies. High pressure should exit across the Maritimes early Friday, Low pressure could then begin to approach late, though uncertainty with the track still exists. Expect increasing clouds Friday, with a chance of showers or a steadier rain Friday night. A chance of rain will persist across the region Saturday. The system should move east Sunday, leaving generally partly cloudy skies across the forecast area. However, could also still have a slight chance/chance of showers. Uncertainty exists Monday regarding low pressure possibly approaching the region. Will have partly cloudy skies along with a chance of showers Monday. Near normal, to slightly below normal, level temperatures are expected Friday through Sunday. Slightly above normal level temperatures are expected Monday. && .AVIATION /05Z TUESDAY THROUGH SATURDAY/... NEAR TERM: BHB will drop to LIFR by 07z with low cigs and fog moving in. Improvement to VFR by 12z. BGR will diminish to MVFR in BCFG between 07-11z this morning before improving. FVE may see an area of storms move in between 08-10z with brief MVFR restrictions. Otherwise Aroostook terminals to see VFR next 24 hours. Confidence is very low on chances for tstms this afternoon and have not included with this set of TAFS. Aroostook terminals expected to see LLWS at FL020 from 27030kt through 10z this morning. All terminals will see W winds gusting to 20kts this afternoon. SHORT TERM: Tuesday night...Variable conditions with any thunderstorms early. Otherwise, VFR. West/northwest winds 5 to 10 knots. Wednesday through Friday. VFR. North/northwest winds 10 to 15 knots with gusts up to 20 knots Wednesday, then 5 to 10 knots Wednesday night. Variable winds 5 to 10 knots Thursday through Friday. Friday night..VFR early. MVFR/IFR late with a chance of showers or rain. South/southeast winds 5 to 10 knots. Saturday...MVFR/IFR with a chance of rain. South/southeast winds 10 to 15 knots with gusts up to 20 knots. && .MARINE... NEAR TERM: Winds and seas below Small Craft Advisory criteria tonight into tomorrow. Seas stay at or below 3 ft over the outer waters, and at or below 2ft for the inner waters. Potential for fog development tonight into Tuesday morning, which could reduce visibility. Winds from the S/SW at 10-15kt, with gusts up to 20kt possible tomorrow. SHORT TERM: Winds/seas below small craft advisory levels Tuesday night through Thursday. Patchy fog Tuesday night. && .CLIMATE... Near record highs possible on Tuesday, June 24th: Site Forecast Record Caribou 88 93 (1995) Houlton 91 92 (1995) Millinocket 93 97 (1912) Bangor 96 93 (1995) && .CAR WATCHES/WARNINGS/ADVISORIES... ME...Heat Advisory from 11 AM this morning to 8 PM EDT this evening for MEZ005-006-011-029>032. Extreme Heat Warning from 11 AM this morning to 8 PM EDT this evening for MEZ015>017. MARINE...None. && $$ Near Term...Brennan/Buster Short Term...Norcross Long Term...Norcross Aviation...Brennan/Buster/Norcross Marine...Brennan/Buster/Norcross Climate...Brennan