Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 040819 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 319 AM EST WED MAR 4 2015 .SYNOPSIS... LOW PRESSURE WILL PASS TO OUR NORTH TODAY...DRAGGING A COLD FRONT THROUGH THE REGION. HIGH PRESSURE WILL BUILD IN FROM THE WEST THURSDAY AND CREST OVER THE REGION ON FRIDAY. A WEAK DISTURBANCE WILL DRAG TRAILING WARM AND COLD FRONTS ACROSS THE REGION THIS WEEKEND. ANOTHER VERY WEAK DISTURBANCE WILL CROSS THE REGION EARLY NEXT WEEK. && .NEAR TERM /THROUGH TODAY/... THE STEADIER WARM AIR ADVECTION PRECIPITATION WAS EXITING THE AREA AS OF 07Z. IN ITS WAKE...LOW CLOUDS AND PATCHY FOG. THERE WAS SOME SPOTTY SNOW SHOWERS...SLEET...AND FREEZING DRIZZLE AS WELL. WITH STEADIER PRECIPITATION NOW ENDED...THE CURRENT WINTER WEATHER ADVISORIES ARE THEREFORE DROPPED AS OF THE NEW PUBLIC PACKAGE ISSUANCE THIS MORNING. THE COLD/OCCLUDED FRONT ENTERING WESTERN NEW ENGLAND AT 07Z WILL RACE EAST AND EXIT THE COAST THIS MORNING. SOUTHWEST FLOW AND PARTIAL CLEARING BEHIND IT WILL ALLOW TEMPERATURES TO WARM TO A FEW DEGREES EITHER SIDE OF 40 ACROSS THE AREA TODAY. && .SHORT TERM /TONIGHT THROUGH 6 PM THURSDAY/... SECONDARY COLD FRONT WILL CROSS THE AREA TONIGHT WITH A FEW UPSLOPE SNOW SHOWERS POSSIBLE ACROSS THE HIGHER TERRAIN. WITH COLD AIR DEEPENING ACROSS THE FORECAST AREA...LOWS WILL RANGE FROM NEAR 20 AT THE COAST TO THE SINGLE NUMBERS ABOVE ZERO NEAR THE INTERNATIONAL BORDER. ON THURSDAY...SOUTHERN NEW HAMPSHIRE TO COASTAL MAINE SEES A FEW CLOUDS WITH THE BAROCLINIC ZONE SITUATED TO OUR SOUTH AND EAST...OTHERWISE A MOSTLY SUNNY AND SEASONABLY COLD DAY WITH HIGHS ONLY IN THE TEENS AND 20S. && .LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/... MOISTURE STARVED WOULD BE A GOOD LABEL FOR THE THEME FOR ANY SYSTEMS CROSSING OUR REGION DURING THE LONG TERM PORTION OF THE FORECAST. AFTER A COLD SHOT OF AIR DURING THE LATER PART OF THE WORK WEEK...A PATTERN CHANGE WILL ALLOW FOR MILDER AIR INTO EARLY NEXT WEEK. NEAR NORMAL TEMPERATURES WILL FINALLY ARRIVE NEXT WEEK WITH READINGS IN THE LOWER 40S EXPECTED OVER MANY LOCATIONS. THE JET STREAM WILL CONTINUE TO AFFECT OUR REGION FROM CANADA. HOWEVER...UNLIKE FEBRUARY...OUR AIRMASS WILL NOT BE BUILDING FROM THE ARCTIC AND PLUNGING SOUTHWARD. RATHER...THEY WILL BE SIGNIFICANTLY MODIFIED WITH TIME AFTER CROSSING NORTH AMERICA. SEVERAL CLIPPER TYPE SYSTEMS WILL BE CROSSING OUR FORECAST AREA DURING THE EXTENDED PORTION OF THE FORECAST. THREE SEPARATE SYSTEM PASSAGES WILL OCCUR SATURDAY NIGHT...MONDAY AND AGAIN ON TUESDAY. AGAIN...THESE WILL BE VERY MOISTURE STARVED SYSTEMS...SO ONLY VERY LIGHT SNOW...SNOW FLURRIES OR RAIN SHOWERS WILL ACCOMPANY THE AREAS OF LOW PRESSURE. && .AVIATION /07Z WEDNESDAY THROUGH SUNDAY/... SHORT TERM...CONDS IMPROVING TO VFR THROUGHOUT BY 15Z. LONG TERM...MAINLY VFR CONDITIONS THROUGHOUT THE PERIOD. && .MARINE... SHORT TERM...SMALL CRAFT EXTENDED THROUGH TONIGHT AS COLD/OCCLUDED FRONT CROSSES THE AREA THIS MORNING...WITH A SECONDARY COLD FRONTAL PASSAGE TONIGHT. LONG TERM...WINDS AND SEAS WILL BE MAINLY BELOW SCA THRESHOLDS INTO EARLY NEXT WEEK...HOWEVER WINDS MAY BECOME GUSTY FROM THE WEST ON MONDAY. && .GYX WATCHES/WARNINGS/ADVISORIES... MARINE...SMALL CRAFT ADVISORY UNTIL 7 AM EST THURSDAY FOR ANZ150>154. && $$ SCHWIBS/CANNON

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