Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 311851 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 251 PM EDT TUE MAR 31 2015 .SYNOPSIS... HIGH PRESSURE WILL BUILD IN FROM THE WEST TONIGHT THROUGH WEDNESDAY AND WILL SHIFT OFFSHORE WEDNESDAY NIGHT. A WARM FRONT WILL LIFT NORTH INTO THE REGION ON THURSDAY AND WILL STALL AS A COLD FRONT APPROACHES FROM THE WEST. THE COLD FRONT WILL GRADUALLY SETTLE INTO NEW ENGLAND AND WILL STALL ON FRIDAY. LOW PRESSURE WILL TRACK NORTHEAST ALONG THE FRONT FRIDAY NIGHT AND WILL MOVE NORTHEAST THROUGH THE REGION ON SATURDAY. WEAL LOW PRESSURE DROPPING SOUTHEAST FROM CANADA WILL DISSIPATE OVER THE REGION ON SUNDAY AND A TRAILING COLD FRONT WILL STALL OVER SOUTHERN NEW ENGLAND ON SUNDAY. HIGH PRESSURE WILL BUILD OVER THE AREA ON MONDAY. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... CLEAR AND COLD NIGHT ON TAP FOR THE REGION AS HIGH PRESSURE BUILDS IN FROM THE WEST. WEAK DISTURBANCE PASSING SOUTH OF THE FORECAST AREA WILL BRUSH SOUTHERN NEW HAMPSHIRE WITH SOME HIGH CLOUDS DURING THE 1ST HALF OF THE NIGHT. OVERNIGHT LOWS WILL RANGE THROUGH THE SINGLE NUMBERS NORTH AND THROUGH THE TEENS SOUTH. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM WEDNESDAY/... HIGH PRESSURE WILL CONTINUE TO SHIFT IN FROM THE WEST ON WEDNESDAY. ASIDE FROM A FEW CLOUDS IN THE MOUNTAINS...SHOULD SEE ANOTHER MOSTLY SUNNY DAY. WILL SEE A SLIGHTLY COOLER DAY WITH HIGHS FROM THE UPPER 20S TO UPPER 30S NORTH AND UPPER 30S TO LOWER 40S SOUTH. HIGH PRESSURE WILL CREST OVER THE REGION WEDNESDAY NIGHT BEFORE SHIFTING OFFSHORE. WILL SEE INCREASING CLOUDS AFTER MIDNIGHT AS WEAK OVER-RUNNING EDGES IN FROM THE WEST. LOWS WILL BOTTOM OUT AT 10 TO 15 DEGREES NORTH AND IN THE MID TEENS TO MID 20S SOUTH. && .LONG TERM /WEDNESDAY NIGHT THROUGH TUESDAY/... THE MODELS ARE IN GENERAL AGREEMENT ON THE LONG WAVE PATTERN THROUGH THE FIRST HALF OF NEXT WEEK. THERE IS DECENT AGREEMENT IN HANDLING OF INDIVIDUAL SHORTWAVE ENERGY AS WELL. WE BEGIN THE PERIOD WITH HIGH PRESSURE SLIDING OFFSHORE. A WARM FRONT WILL BRING INCREASING CLOUDS AND A FEW RAIN OR SNOW SHOWERS LATE THURSDAY. A FEW RAIN SHOWERS ARE POSSIBLE THURSDAY NIGHT INTO FRIDAY AHEAD OF THE TRAILING COLD FRONT. THE COLD FRONT WILL STALL TO OUR SOUTH AND EAST FRIDAY NIGHT WITH DEVELOPING LOW PRESSURE TO TRACK NORTHEAST ALONG IT ON SATURDAY. THERMAL FIELDS SUGGEST A LARGELY RAIN EVENT AHEAD OF THE LOW...WITH AREAS NEAR THE INTERNATIONAL BORDER POSSIBLY SEEING A WINTRY MIX. AS COLD AIR WRAPS IN BEHIND THE LOW...RAIN COULD TRANSITION TO SLEET AND SNOW LATE SATURDAY ACROSS THE MOUNTAINS AND FOOTHILLS BEFORE ENDING. A COLD FRONT WILL CROSS THE AREA SUNDAY WITH A FEW RAIN AND SNOW SHOWERS. HIGH PRESSURE WILL THEN NOSE INTO THE AREA FOR EARLY NEXT WEEK. && .AVIATION /18Z TUESDAY THROUGH SUNDAY/... SHORT TERM...VFR TONIGHT THROUGH WEDNESDAY NIGHT. LONG TERM... THU PM...SCT MVFR PSBL IN RAIN AND SNOW SHOWERS. THU NIGHT - FRI...MVFR IN RAIN SHOWERS...WITH LCL IFR PSBL. SAT...MVFR IN RAIN AND SNOW...WITH AREAS OF IFR. && .MARINE... SHORT TERM...SCA`S FROM LATE TONIGHT THROUGH NOON WEDNESDAY. LONG TERM... FRI - SUN...SMALL CRAFT WINDS AND SEAS ARE LIKELY. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...SMALL CRAFT ADVISORY FROM 2 AM TO NOON EDT WEDNESDAY FOR ANZ150>154. && $$

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