Area Forecast Discussion
Issued by NWS Caribou, ME

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000 FXUS61 KCAR 230147 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 947 PM EDT FRI JUL 22 2016 .SYNOPSIS...
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A cold front will cross the area tonight. A secondary cold front will move through on Saturday and push offshore Saturday night. High pressure will build in on Sunday and crest over the region Sunday night.
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945 pm update... Severe thunderstorm watch was cancelled as of 00z. Severe storms occurred across the far north but underperformed in area that was primed with 2000 J CAPE in srn zones. Sfc boundary has made it to just west of the international brder. Hesitate to call this a cold front as temps and dwpts are similar on both sides of the bndry. Area of storms hv dvlpd ahd of strong s/wv skirting thru srn Quebec acrs nrn NY state and as wv mvs thru tonight, expect storms wl head into sw Maine. Cannot rule out isold-sctd storms at any point tonight acrs CWA as bndry drops thru the area in vry moist airmass so hv retained slgt/lochc pops thru 15z. Next front expected to mv thru in the aftn with airmass destabilizing once again ahd of front. Bulk shear values wl be low compared to tda and frzg hgts wl be lower, thus the main threat looks to be small hail. As for update expect fog to dvlps acrs areas that can see brief clrng as low-lvl moisture rmns entrenched acrs the region. Hv had to boost temps briefly as they are hvg a tough time dropping tonight but expect mins wl range fm lwr 60s acrs the north to u60s in the south. Previous Discussion... Another round of convection possible overnight as another disturbance moving toward southern Quebec tracks across central Maine. This was seen well on the satellite wv imagery lightning flaring up out ahead of the disturbance. A wind and hail threat along w/the very heavy rainfall. Temps overnight will hold in the 60s w/some patchy fog. An upper level trof w/its associated surface front is forecast to swing across the region on Saturday. Atmosphere will become unstable once again w/SB/MUCAPES hitting 1000+ joules and lis down to -2 to -3. Looks like from the latest NAM and GFS20 hint at cloud cover hanging on which would limit the extent. Decided to stay w/enhanced wording for hail. Activity should weaken by late in the afternoon. Daytime high temps will range in the upper 70s to around 80 across the north and west while central and downeast areas will see mid 80s even as far as the coast due to the west wind.
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&& .SHORT TERM /SATURDAY NIGHT THROUGH MONDAY/... A secondary cold front will reach the coast Saturday evening. A few thundershowers may still be around, especially downeast, as a function of cool air aloft moving over the area. Otherwise, any showers will taper off Saturday evening and skies will partially clear overnight. Sunday will then turn out mostly sunny Downeast and partly sunny across the north as high pressure builds into the region. This will give way to a clear, calm and comfortable night Sunday night as high pressure crests over the region. High pressure will move east on Monday as the next trough of low pressure begins to approach. Clouds will increase Monday ahead of the trough and humidity levels will rise again. Some thunderstorms may stray into western areas late Monday as the warmer and more humid air advects north beneath relatively cooler air aloft. && .LONG TERM /MONDAY NIGHT THROUGH FRIDAY/... An upper trough and associated cold front swings through Eastern Maine late Monday into Tuesday for a chance of showers and thunderstorms. High pressure aloft provides the region with fair and seasonable weather on Wednesday. The next fast moving upper trough and cold front swings through northern New England Thursday and Thursday Night for showers and thunderstorms. Zonal flow aloft should provide for a dry and seasonable day on Friday. && .AVIATION /02Z SATURDAY THROUGH WEDNESDAY/... NEAR TERM: VFR w/tstms into tonight. Conditions look like they will drop MVFR later tonight w/some fog all the way to BGR and BHB. Conditions are expected to improve to VFR after 12Z with more tstms by midday. SHORT TERM: MVFR to VFR conditions Saturday evening should improve to VFR Saturday night. VFR conditions are then expected across the area Sunday through Monday. VFR to occasionally MVFR conditions are likely on Tuesday. && .MARINE... NEAR TERM: SCA for hazardous seas remains up through early Saturday morning for Hazardous seas. Wave model has caught up as it was matching the latest buoys w/5ft. Seas will build another foot or so w/this sustained fetch from the ssw to 6-7 ft. was Winds will be 10-15 kts w/a few gusts to 20 kt. winds turning the w on Saturday as the second front sweeps through the waters. Seas will drop back due to the offshore wind. SHORT TERM: Winds and seas are expected to be below SCA Saturday night through Monday. A few winds gusts may approach 20 kt Saturday night into Sunday following a cold front. Winds will then be lighter Sunday night through Monday as high pressure builds over. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...Small Craft Advisory for hazardous seas until 8 AM EDT Saturday for ANZ050-051. && $$ Near Term...Farrar/Hewitt Short Term...Bloomer Long Term...Okulski Aviation...Farrar/Hewitt/Bloomer Marine...Farrar/Hewitt/Bloomer is the U.S. government's official web portal to all federal, state and local government web resources and services.