Area Forecast Discussion
Issued by NWS Portland, ME

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
-- Remove Highlighting --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KGYX 131446 AFDGYX Area Forecast Discussion National Weather Service Gray ME 1046 AM EDT Sat Apr 13 2024 .SYNOPSIS... Slightly drier weather is expected today but there will be plenty of showers around. Drier and warmer conditions return for tonight and early Sunday but showers move back into the picture Sunday afternoon and night. High pressure gradually builds in early next week with partly to mostly sunny skies and a warming trend. Cooler conditions with mainly rain expected late next week as low pressure develops to our south. && .NEAR TERM /UNTIL 6 PM THIS EVENING/...
-- Changed Discussion --
1030 AM...I have adjusted sky and POPS a bit through today based on current conds, but the latest model runs as well. More scattered showers showers across much of the CWA early today will wind down later as the front moves through, while over the mtns should see shower increase in coverage and to some degree intensity, and winds shift to WNW and upslope takes over, with best coverage there this evening. 7:20am Update... Worked some patchy fog into the grids for this as some areas have been seeing it. Otherwise, notable changes with this update. Previous... An upper level low slowly moves through New England during the daytime today, kicking off more scattered shower activity, especially in the afternoon. Some sunshine is expected this morning toward the coast, but clouds fill in by the afternoon. The most frequent showers are expected across the higher terrain, western New Hampshire, and northern spots. With the clouds and showers, highs don`t warm a whole lot from where temps start the day. Mainly 40s and 50s are expected, with the warmest readings near the coast. A cold front then pushes through late this afternoon, shifting winds to the west and ushering in some drier air.
-- End Changed Discussion --
&& .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/... A weak shortwave ridge crosses through late tonight and the first part of tomorrow, bringing a period of drier and mild conditions. Lows bottom out in the 30s and 40s tonight, with highs warming into the 50s to near 60 in southern New Hampshire. However, the dry period looks to be short lived as a weak area of low pressure approaches from the west late in the day tomorrow. High res guidance has become more amplified and further north with this system, likely bringing another round of showers to at least southern New Hampshire. So while tomorrow looks decent through midday, clouds would quickly increase only an hour or two ahead of the showers, and temps would then fall into the 40s as wet bulbing occurs. A period of steady rain is also possible across southern New Hampshire, but chances for this still look better to the south through Massachusetts. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... A low weak low pressure system moves across the forecast area Sunday night with with showers, especially in the evening. Some minor snow accums will be possible in the highest elevations in the mountains. Thereafter drier NW flow pattern takes over through Wednesday allowing for mainly fair weather and temperatures a bit above normal. Still cannot rule out a few showers during this period though, especially in the mountains on Tuesday with a weak cold frontal passage. Latest deterministic and ensemble guidance is in reasonably good agreement for the late week time period with wet weather returning. However, the pattern appears to be a bit complex, so precipitation timing and amounts are still of low confidence at this time. && .AVIATION /15Z SATURDAY THROUGH WEDNESDAY/... Short Term...Lingering IFR ceilings at AUG improve this morning. MVFR ceilings return to HIE and LEB this morning, and linger into most of tonight. Elsewhere, mainly VFR conditions are expected, with a few showers and periods of near MVFR ceilings. VFR prevails through tomorrow at most terminals, except at HIE where MVFR ceilings linger. Showers are likely late in the day tomorrow across southern and western New Hampshire terminals. Long Term...MVFR conditions possible in -SHRA Sunday night, otherwise, mainly VFR conditions are expected Monday through Wednesday. && .MARINE... Short Term...A cold front crosses the waters late today, with SCA conditions persisting through tomorrow as seas remain above 5ft. A weak low pressure system approaches from the west tomorrow. Long Term....SCA conditions persist through Monday or Monday evening on the outer waters as seas continue to subside. SCA conditions not expected Mon-Wed. && .HYDROLOGY...
-- Changed Discussion --
Some smaller and faster reacting river forecast points have crested and are receding today, while some of the larger main stem rivers, especially the Kennebec, with it`s tidal fluctuations will continue to rise and not crest until this evening. in minor flood at this time. Any light rainfall today and Sunday should not have no effect on the rivers.
-- End Changed Discussion --
&& .GYX WATCHES/WARNINGS/ADVISORIES... ME...None. NH...None. MARINE...Small Craft Advisory until 8 PM EDT Sunday for ANZ150>154. && $$ NEAR TERM...Cempa/Clair SHORT TERM...Clair LONG TERM...Ekster

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.