Area Forecast Discussion
Issued by NWS Portland, ME

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
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 44 45 46 47 48 49 50
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
522 FXUS61 KGYX 181218 AFDGYX Area Forecast Discussion National Weather Service Gray ME 718 AM EST Sat Feb 18 2017 .SYNOPSIS... A warm front will push east through the region today and will be quickly followed by a weak cold front this evening. A secondary cold front will approach from the north on Sunday and will drop south through the region Sunday night. High pressure will build in from the west on Monday and will crest over the area on Tuesday before shifting offshore. A warm front will push east through the region Tuesday night and early Wednesday. A cold front will slowly approach from the northwest Wednesday night and will cross the region on Thursday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... 12z update... Quick update to tweak area temps/td`s. Scattered to broken area of mid and high clouds currently crossing the forecast area ahead of a weak warm front. Expect these clouds to gradually push east of the forecast area by early afternoon. No other changes planned to the current forecast attm. Previous discussion... Weak warm front currently approaching from the west will bring variable high and mid level clouds to the region this morning. expect this cloud cover to push east of the region late this morning and early this afternoon. High temperatures will top out above normal ranging from the mid 30s north to the mid 40s south. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/... Weak cold front will cross the region this evening with little fanfare other than a wind switch and a few mountain clouds. Lows overnight will range from the mid 20s to lower 30s. Secondary cold front will approach from the north on Sunday. Expect increasing clouds in the mountains with chance of afternoon snow or rain showers. Downwind of the mountains mostly sunny skies in the morning will give way to partly sunny conditions. Highs will range from the mid 30s to lower 40s north and mid to upper 40s south. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... A multi-model and ensemble consensus reveals that the long term period will be dominated by minimally-amplified and fast moving pacific flow. The result will be warmer than normal temperatures on average through the period along with no major storm systems. The only fly in the ointment we can see at this point is some light warm air advection precipitation in advance of a warm front later Tuesday night and Wednesday. This could mean a light mix of precipitation and a little light freezing rain for portions of the region in time for the Wednesday morning commute. Otherwise, a lot quieter weather than what we have experienced in recent weeks is expected. && .AVIATION /12Z SATURDAY THROUGH WEDNESDAY/... Short Term...VFR today through tonight. VFR Sunday with areas of MVFR ceilings in the mountains. Long Term...Mainly VFR through the period. However, MVFR conditions in light precipitation is possible later Tuesday night and Wednesday. && .MARINE... Short Term...Southwest flow will pick up today behind a passing warm front. Winds will continue brisk behind a cold front overnight. Have issued SCA`s for the outer waters for this afternoon through tonight. Long Term...Marginal SCA conditions are possible Monday into Tuesday. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...None. NH...None. MARINE...Small Craft Advisory from 2 PM this afternoon to 5 AM EST Sunday for ANZ150-152-154. && $$

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