Area Forecast Discussion
Issued by NWS Portland, ME
Issued by NWS Portland, ME
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105 FXUS61 KGYX 030703 AFDGYX Area Forecast Discussion National Weather Service Gray ME 303 AM EDT Wed Jul 3 2024 .SYNOPSIS... High pressure will move southeast of the New England coast today with warm and dry conditions as a result. A shower is possible as a weak frontal boundary crosses the region late tonight. Temperatures and humidity begin to build on Independence Day with this trend continuing through the end of the week. The next chance for more widespread showers and thunderstorms is expected this weekend. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Another very quiet day expected today as a ridge of high pressure anchored over the Northeast gradually eases off the New England coastline this afternoon. This will allow for mainly sunny skies with some high, thin Cirrus crossing the region from time to time. Temperatures will be slightly above normal for this time of the year once again with mainly 80s across the region. It will become cooler along the immediate coastline as winds become onshore during the afternoon. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM THURSDAY/... Clouds will continue to increase tonight as weak frontal systems approach from the west. A few scattered showers will make it into northern areas during the night. However, model soundings suggest the atmosphere will remain initially dry in the mid levels of the atmosphere. Any scattered precipitation will be light. There will be some patchy fog as well, however it will be limited due to the cloud cover. Overnight lows will range from the upper 50s to mid 60s. A cold front will begin to dissipate over the region on Independence Day. Isolated showers and perhaps a rumble of thunder can be expected during the day. Temperatures will be on the warm side once again inland with highs in the 80s. Cooler conditions can be expected along the coastline where a sea breeze develops during the day. && .LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/... Highlights: * Scattered showers are possible early with humidity expected to be on the increase for Independence Day * Warm, humid airmass taking control over the weekend with showers expected mainly Saturday Afternoon into Sunday Friday: Friday looks to remain dry with partly cloudy conditions throughout the region and temperatures topping out in the middle to upper 80s. Dewpoints are expected to remain elevated both days leading to a more humid feel to air. Low temperatures are expected to range through the 60s from north to south. Saturday and Sunday: The pattern becomes more unsettled heading into the weekend as a series of fronts approaches the region from the southwest. There is quite a bit of model uncertainty on the surface features but Saturday looks to start out dry with showers and thunderstorms arriving by the afternoon. Severe weather threat looks minimal but the greatest chance for thunderstorms looks to be over Southern NH where the warm front has a greater chance of lifting. Farther north, the threat for storms is lower as the front is likely to occlude. Showers are expected to linger into Sunday with shower chances decreasing later in the day. The airmass will remain very humid through this period with high temperatures Saturday in the low to mid 80s and mid to upper 80s on Sunday. A few spots in Southern NH may hit 90 degrees by Sunday afternoon. Low temps remain warm in the mid to upper 60s with low 70s possible the urban areas of Southern NH. Monday and Tuesday: Generally pleasant weather is expected Monday. Beyond that, low pressure passing to our north is likely to drop more showers and thunderstorms into our region for Tuesday, however timing is uncertain and confidence is low with this feature. High temperatures are expected to remain in the 80s during this time. && .AVIATION /06Z WEDNESDAY THROUGH SUNDAY/... Short Term...VFR conditions today with seabreeze continuing to kick in at the coast this afternoon and evening. A few patches of valley fog possible tonight. A few widely scattered showers late tonight into Thursday could bring a period of lowering conditions. Long Term... VFR conditions Thursday night lasting into Saturday. MVFR conditions with localized IFR Saturday afternoon and evening in scattered showers. MVFR to VFR conditions return on Sunday. && .MARINE... Short Term...A few southerly gusts may approach 25 kt this evening but sub-sca conditions are expected for the most part tonight through Thursday. Long Term... Wind and waves approach SCA levels Thursday otherwise an extended period of relatively light winds and low waves are expected Friday through the weekend and into early next week. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...None. NH...None. MARINE...None. && $$ NEAR/SHORT TERM...Cannon LONG TERM...Lulofs