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 44 45 46 47 48
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KGYX 261251 AFDGYX Area Forecast Discussion National Weather Service Gray ME 851 AM EDT Mon Sep 26 2016 .SYNOPSIS... An approaching front brings showers through the area on Monday night and Tuesday. Drier weather returns for midweek. Late in the week and into the weekend a broad area of low pressure will become anchored over the Ohio River Valley and will bring unsettled weather to the region. && .NEAR TERM /TODAY/...
-- Changed Discussion --
845AM UPDATE... Have updated mainly to adjust for the latest temperatures observed this morning and update temperature trends through the rest of the day. No other significant changes were needed. 655AM UPDATE... Many locations are in the lower 30s this morning especially in area valleys and sheltered areas. We should see freezing fog and frost burn off shortly. A few cirrus clouds are crossing the area this morning in association with a dirty ridge. These should shift east this morning as the 1024mb high pressure centered over VT moves east. Readings will warm quickly this morning in sunny skies and a dry airmass. ORIGINAL DISCUSSION... Clear skies this morning and light winds with the majority of locations calm. Many areas are still in the mid 30s but should continue to drop as dew points are in the lower 30s. A good part of the north country and the foothills are already below freezing. Will let the freeze warning continue as well as the frost advisory until 8 am. After a cold start we should recover nicely with highs in the upper 50s/lower 60s north to mid to upper 60s south. High pressure passes overhead today and moves into the Gulf of Maine tonight. An occluded front associated with strong low pressure near the Great Lakes region will approach today. As winds turn southerly and the low progresses moisture and clouds will return.
-- End Changed Discussion --
&& .SHORT TERM /TONIGHT AND TUESDAY/... The front will reach the VT/NH border overnight tonight with showers moving in west to east. For overnight temperatures we`ll see widespread 40s and 50s. Rain will continue through the day Tuesday until the front is ushered east. A sharply defined dry slot arrives and dries out things from the SW. Expecting most areas to get a quarter of an inch or less. We remain under a strong jet stream and rain showers may linger in northern sections. && .LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/... A lot of uncertainty in outcome of developing upper cutoff low over the Ohio Valley and Great Lakes for later in the week. Models begin with a dry slot over the area Wednesday but then differ some in how to handle the northward progression of the precipitation shield late in the week and into the weekend. Will hedge with a chance of showers for now since it could go either way. A damp onshore flow is expected for the latter part of the week and into the weekend so due to a persistent onshore easterly flow. Used superblend model temps but may be a little too warm due to the onshore flow as ocean temps now in the 50s. && .AVIATION /13Z MONDAY THROUGH FRIDAY/... Short Term...VFR through this evening. Flight restrictions possible early Tuesday morning as showers move in from the west. This will continue through the first half of the day for most terminals. MHT, CON, and LEB will be the first to clear out in the afternoon. HIE may stay in scattered showers throughout the day. Long Term...VFR conditions midweek will become MVFR to IFR in scattered showers and ocean stratus late in the week and into the weekend. && .MARINE... Short Term...Winds and waves build in association with an occluded front which will cross the waters Tuesday afternoon. Conditions are expected to be sub-SCA or marginal at best. Long Term...A prolonged east to northeast flow will gradually allow seas to build reaching SCA levels over the outer waters by late Wednesday and continuing the rest of the week. && .GYX WATCHES/WARNINGS/ADVISORIES...
-- Changed Discussion --
ME...None. NH...None. MARINE...None.
-- End Changed Discussion --
&& $$ NEAR TERM UPDATE...Kimble SHORT TERM...Hanes LONG TERM...Marine

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