Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 181447 AFDGYX Area Forecast Discussion National Weather Service Gray ME 947 AM EST Thu Jan 18 2018 .SYNOPSIS... A weak ridge of high pressure will bring quiet and seasonable weather to the area today. A warm front will lift north across the area late tonight and early Friday with clouds and a few mountain snow showers. A milder flow and above normal temperatures follow this front late Friday into the upcoming weekend. A storm system may affect the region early next week with mixed precipitation and rain. && .NEAR TERM /UNTIL 6 PM THIS EVENING/...
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945 AM Update...Little change to the going forecast for today. Sunny skies downwind of the mountains will continue. Upslope clouds and some flurries/snow showers across Coos County and the western ME mountains will continue also. Did add low chance PoPs for snow showers for northern and central zones tonight with strong short wave trough moving through. 550 AM...Minor ESTF update to reflect the current mesonet in near term grids. Prev disc... Weak ridging will take center stage today...with lingering clouds and scattered flurries confined to the higher terrain in upslope flow. Temperatures will be seasonable with highs ranging from the mid 20s to lower 30s across the forecast area.
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&& .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM FRIDAY/... For tonight...a shortwave impulse will ride east from the Great Lakes and across New England. We`ll see a band of warm air advection clouds overnight with this feature and perhaps a few snow showers across the higher terrain. Lows tonight will be mainly in the teens. On Friday...the shortwave impulse slips offshore in the morning while the surface warm front and clouds lift to our north. Outside of a few mountain snow showers...it`ll be a dry day with morning clouds giving way to sunshine across southern and coastal sections. Highs will be a bit milder than today with readings ranging from the upper 20s to mid 30s. && .LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/... A fast moving and moisture starved system will pass well to our north Friday night into Saturday. Passing short wave may bring a couple scattered snow showers to far northern areas. Otherwise, it will remain relatively dry. 850 mb temperatures above zero Celsius and good mixing may allow for readings to reach the 40s on Saturday, well above normal for this time of the year. A cold front will cross the region Sunday, before stalling and dissipating just south of our region. Nevertheless, temperatures will once again reach the lower 40s over far southern areas with 30s elsewhere. All models in agreement with high pressure building into New England behind this front on Monday. As an intense area of low pressure moves over the Great Lakes region, a secondary area of low pressure may form along a slow moving cold front near the Mid Atlantic region. This system may allow for a brief period of strong gusty southerly winds along the coastline as well as mixed precipitation to move quickly through the region. Ice jams will need to be monitored closely with this mixed precipitation. && .AVIATION /15Z THURSDAY THROUGH MONDAY/... Short Term /through Friday/...VFR with lcl MVFR psb in mtn -shsn. Long Term...Possible MVFR conditions Friday night into Saturday with scattered snow showers across northern areas, otherwise VFR. Ceilings and visibilities will be lowering Monday night into Tuesday as low pressure forms along the Mid Atlantic region and moves north. && .MARINE... Short Term /through Friday/...Marginal SCA for seas remains in effect for the ocean waters through this morning. Otherwise...expect winds and seas to remain below SCA threshold the remainder of the period. Long Term...Gusty southwesterly winds becoming westerly by Saturday. Winds may touch gale force. A strong gale may develop next Tuesday as low pressure develops to our west. && .HYDROLOGY... River flood warning for the Kennebec continues as the river fluctuates near flood stage because of tidal influence near the ice jam. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...None. NH...None. MARINE...Small Craft Advisory for hazardous seas until 5 PM EST this afternoon for ANZ150-152-154. && $$ NEAR TERM UPDATE...Ekster

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