Area Forecast Discussion
Issued by NWS Caribou, ME

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000 FXUS61 KCAR 281010 AFDCAR Area Forecast Discussion National Weather Service Caribou ME 610 AM EDT Wed Jun 28 2017 .SYNOPSIS... An upper level trough will remain to our west through mid week. Weather disturbances moving out of the trough will cross the region today. Another area of low pressure may approach late Thursday. && .NEAR TERM /THROUGH TONIGHT/...
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Update 6:10 AM: Have adjusted the temperature, dew point, and wind based on latest observations. No other changes. An upper level trough will move across the region today. This will result in more showers and thunderstorms. With freezing levels low again today, some of the thunderstorms may contain small hail. The upper level system is then expected to move to the east of New England with showers coming to an end by late tonight.
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&& .SHORT TERM /THURSDAY THROUGH FRIDAY/... System currently in the nrn Plains wl slowly advance east and set up shop ovr the wrn Great Lakes by Thur mrng. Wmfnt wl stretch acrs srn New England in the aftn with wnw flow aloft continuing in vicinity of CWA. The morning will start out dry but as wvs ripple thru aloft showers shud quickly dvlp by 15z. Elevated instability wl be present in the morning and aftn hrs acrs most of the area, thus hv included slgt chc thunder into the aftn. Instability wl be on the wane fm west to east by mid-aftn, thus hv rmvd thunder mention fm wrn areas drg the day but expect as wmfnt mvs thru that elevated convection wl return to the region aft about midnight. Warm front wl lift most of the way thru Thur night with an area of showers along the bndry. Elevated instability looks to be marginal thus hv only mentioned isold thunder, mainly acrs central and srn zones. Med range guidance does not bring wmfnt into nrn zones bfr it shift back south as a cdfnt Fri aftn. Thus hv rmvd thunder mention fm the north drg the day on Fri. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... Frontal bndry stalls Fri evng as yet another wv dvlps back to the west and shifts it back north as a wmfnt on Sat/Sat ngt. Expect hichc/lkly pops drg the weekend in unstable airmass. Cdfnt wl finally mv thru Mon morning and clr out front once and for all. Latest guidance is now suggesting drier and cooler wx thru mid-week tho upr-lvl trof lingers in ern Canada thru the beginning of the work week. && .AVIATION /10Z WEDNESDAY THROUGH SUNDAY/... NEAR TERM: MVFR/IFR conditions are expected this morning then VFR conditions this afternoon and tonight. SHORT TERM: VFR expected on Thu with potential for MVFR in -shra and -tsra as warm front lifts north Thur night. Off and on MVFR restrictions will persist through the weekend as frontal boundary meanders back and forth over the terminals. && .MARINE... NEAR TERM: Have used the NAM to initialize the wind grids then reduced model wind speed by 10 percent to correct bias. For Waves: Currently, southerly swell is the primary wave system (2 feet/7-8 seconds) and is expected to dominate today and tonight. Wind wave is expected to remain below 1 foot. Will use NWPS for wave heights. Have also reduced the waves in the Surf Forecast based on near shore output from NWPS. SHORT TERM: Winds and seas will remain below SCA levels until late Thu night. Winds will briefly gust to 25kts late Thu night with seas remaining above 5 feet beginning around midnight Thu in southerly swell into early in the weekend and possibly beyond. && .CAR WATCHES/WARNINGS/ADVISORIES... ME...None. MARINE...None. && $$ Near Term...Mignone Short Term...Farrar Long Term...Farrar Aviation...Mignone/Farrar Marine...Mignone/Farrar is the U.S. government's official web portal to all federal, state and local government web resources and services.