Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 161902 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 302 PM EDT WED APR 16 2014 .SYNOPSIS... HIGH PRESSURE WILL BUILD EAST AND CREST ACROSS THE AREA TONIGHT WITH CLEARING SKIES AND NEAR RECORD COLD. THE HIGH WILL SLIDE OFFSHORE AND INTO THE MARITIMES THURSDAY AND THURSDAY NIGHT. WEAK FRONTAL BOUNDARIES WILL CROSS THE AREA SATURDAY AND AGAIN LATE MONDAY AND TUESDAY. && .NEAR TERM /THROUGH TONIGHT/... SOME LINGERING UPSLOPE AND INSTABILITY CLOUDS ON LATEST GOES IMAGERY...OTHERWISE A MAINLY SUNNY DAY ACROSS THE FORECAST AREA. TEMPERATURES RANGE FROM UPPER 20S TO LOWER 40S ACROSS THE REGION...OR A GOOD 15 TO 20 DEGREES BELOW NORMAL. A MAINLY CLEAR AND COLD NIGHT UNDER THE BUILDING SURFACE HIGH WITH DIMINISHING WINDS. THIS WILL SET THE STAGE FOR RECORD OR NEAR RECORD LOW TEMPERATURES BY DAWN ON THURSDAY. THE RECORD LOWS ARE 18F SET IN 1908 AT CONCORD AND 24F SET IN 2003 AT PORTLAND...AND WE`LL EASILY MAKE A RUN AT BOTH OVERNIGHT. && .SHORT TERM /THURSDAY THROUGH THURSDAY NIGHT/... AFTER A CHILLY START...WE`LL ONLY REBOUND TO THE 40S UNDER SUNNY SKIES. A FEW 50 DEGREE READINGS ARE POSSIBLE IN THE CONNECTICUT VALLEY. WITH THE HIGH SLIDING OFFSHORE WE`LL SEE THE ICEBOX DOOR OPEN...WITH A DEVELOPING ONSHORE BREEZE OFF THE 40 DEGREE OCEAN FURTHER LIMITING HIGH TEMPERATURES. A BIT WARMER THURSDAY NIGHT...WITH SOME MARINE STRATUS POSSIBLE LATE ALONG THE COAST FROM PORTLAND AND POINTS SOUTH IN THE PERSISTENT ONSHORE FLOW. && .LONG TERM /FRIDAY THROUGH TUESDAY/...NO SIGNIFICANT WEATHER EVENTS EXPECTED DURING THE LONG TERM PERIOD. AS HIGH PRESSURE MOVES OFFSHORE FRIDAY...A COOL ONSHORE FLOW WILL DEVELOP ALONG THE COAST DURING THE DAY. THIS WILL KEEP TEMPS ALONG THE COAST RATHER COOL. AT THIS TIME...AM NOT ADDING AND DRIZZLE/FOG ALTHOUGH THESE REMAIN A POSSIBILITY. LOW PRESSURE MOVING NORTH OF THE REGION FRIDAY NIGHT AND SATURDAY WILL PUSH A WEAK FRONT THROUGH THE AREA. THIS WILL BRING JUST A CHANCE OF SOME MIXED PRECIP IN MTNS WITH A CHC OF SHOWERS ELSEWHERE. NORTHWEST FLOW WILL DEVELOP ACROSS THE REGION LATE SATURDAY AND SUNDAY AS HIGH PRES BUILDS INTO REGION. ANOTHER FRONTAL BOUNDARY WILL CROSS THE REGION MONDAY NIGHT AND TUESDAY WITH A SLIGHT CHANCE OF SHOWERS. && .AVIATION /18Z WEDNESDAY THROUGH MONDAY/... SHORT TERM /THROUGH THURSDAY NIGHT/...VFR EXPECTED. LONG TERM...MAINLY VFR CONDITIONS EXPECTED. THERE`S A CHANCE OF SOME FOG AND DRIZZLE ALONG THE COAST FRIDAY AS AN ONSHORE FLOW DEVELOPS. && .MARINE... SHORT TERM /THROUGH THURSDAY NIGHT/...WINDS HAVE DROPPED OFF WITH A FEW GUSTS TO NEAR 25 KT POSSIBLE EARLY...OTHERWISE SMALL CRAFT SEAS SHOULD DROP BELOW SCA THRESHOLD BY LATE TONIGHT. QUIET THURSDAY AND THURSDAY NIGHT AS HIGH PRESSURE CRESTS ACROSS THE WATERS. LONG TERM...SEAS COULD REACH SCA CRITERIA MONDAY AHEAD OF FRONTAL SYSTEM...OTHERWISE WINDS AND SEAS SHOULD BE MAINLY BELOW SCA CRITERIA. && .HYDROLOGY... FLOOD WARNINGS REMAIN IN EFFECT FOR RIVERS ACROSS NORTHERN AND CENTRAL PARTS OF THE FORECAST AREA. SLOWER REACTING MAIN STEM RIVERS WILL NOT CREST UNTIL LATE TODAY OR TONIGHT. SEE THE LATEST FLOOD PRODUCTS... PWMFLSGYX AND PWMFLWGYX...FOR MORE DETAILS. THESE PRODUCTS ARE ALSO AVAILABLE ON OUR WEB SITE WWW.WEATHER/GOV/GYX. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY UNTIL 6 AM EDT THURSDAY FOR ANZ150>154. && $$ SCHWIBS/JENSENIUS

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