Area Forecast Discussion
Issued by NWS Portland, ME

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000 FXUS61 KGYX 251925 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 325 PM EDT SAT APR 25 2015 .SYNOPSIS... UPPER LEVEL LOW PRESSURE CONTINUES TO WOBBLE AROUND OVER MAINE AND THE CANADIAN MARITIMES THROUGH TUESDAY....AND THE COOL AND SHOWERY WEATHER CONTINUES. THE LOW WILL FINALLY SHIFT EAST ALLOWING HIGH PRESSURE TO BUILD IN ON WEDNESDAY. LOW PRESSURE PASSES SOUTH OF THE AREA THURSDAY...WITH HIGH PRESSURE BUILDING BACK IN BEHIND IT. && .NEAR TERM /THROUGH TONIGHT/... ANOTHER WEAK IMPULSE ROTATES SWD AROUND THE CLOSED LOW TO OUR EAST LATE THIS AFTERNOON...AND THIS IS SETTING OFF SOME LIGHT SHRA/SHSN IN THE MTNS AND FOOTHILLS. SHOULD BE ENOUGH DOWNSLOPE TO PREVENT ANY MEASURABLE PRECIP FROM MAKING IT ONTO THE COASTAL PLAIN...BUT COULD SEE A SPKL/FLRY...MAINLY IN THE KENNEBEC AND PENOBSCOT VLYS THRU ABOUT SUNSET. OTHERWISE...LOOK FOR SOME CLEARING THIS EVE IN THE DOWNSLOPE AREAS...WITH CLOUDS HOLDING IN THE MTNS. MINS DROP BACK INTO 30S TONIGHT...AROUND 40 ON THE COAST AND IN THE POPULATION CENTERS OF SRN NH. && .SHORT TERM /SUNDAY AND SUNDAY NIGHT/... ANOTHER WAVE ROTATES SWD AROUND THAT CLOSED LOW ON SUNDAY AND PULLS THE LOW BACK A LITTLE BIT TO THE WEST...SO EXPECT MORE PASSING SHOWERS ON SUNDAY THAN WE SAW ON SATURDAY...BUT STILL WILL BE MORE OF THE HIT OR MISS VARIETY. ALSO TEMPS ALOFT WILL BE WARMING SO ANY SHSN WILL BE LIMITED TO THE HIGHER TERRAIN...AND TEMPS WILL RISE A COUPLE DEGREES WARMER THAN TODAY. ONCE AGAIN...SHAVED A FEW DEGREES OFF MAXES IN THE MTNS...AS GUIDANCE WAS TOO WARM FOR THE SECOND DAY IN A ROW. A STRONGER WAVE BEGINS TO SHIFT SW AROUND THE TOP OF THE LOW SUN NIGHT...AND THE THREAT FOR MORE WIDESPREAD SHRA MOVES IN TOWARD DAYBREAK...WITH LOWS AGAIN IN THE 30S TO AROUND 40. && .LONG TERM /MONDAY THROUGH FRIDAY/... THE MODELS ARE IN ONLY FAIR AGREEMENT ON THE LONG WAVE PATTERN THROUGH LATE NEXT WEEK. SO CONFIDENCE IN SENSIBLE WEATHER DETAILS DIMINISHES BY MID WEEK. WE BEGIN THE PERIOD WITH THE UPPER LOW MEANDERING JUST TO OUR EAST. BY WEDNESDAY...THE UPPER LOW MAY LIFT FAR ENOUGH OFFSHORE FOR WEAK RIDGING TO TAKE HOLD AND PROVIDE A DRY WARM DAY. BY LATE THURSDAY...THE NEXT NORTHERN STREAM IMPULSE AND AN ASSOCIATED COLD FRONT SHOULD APPROACH THE AREA BEFORE SLIDING OFFSHORE ON FRIDAY. ANOTHER WEAK IMPULSE COULD BRING A FEW CLOUDS AND SCATTERED SHOWERS SATURDAY. RIDGING AND WARM TEMPERATURES FOLLOW TO ROUND OUT THE WEEKEND. && .AVIATION /19Z SATURDAY THROUGH THURSDAY/... SHORT TERM...VFR CONDITIONS WILL PREVAIL THROUGH SUNDAY EVENING...ALTHOUGH COULD SEE SOME MVFR IN SHSN AT KHIE INTO THIS EVE. COULD SEE MVFR TO IFR CIGS MOVE IN LATER SUN NIGHT. LONG TERM... MON - TUE...SCT MVFR PSBL IN SHOWERS. FRI...SCT MVFR PSBL IN SHOWERS. && .MARINE... SHORT TERM...WEAK LOW PRESSURE NEAR THE WATERS WILL KEEP WINDS/SEAS WELL BLO SCA CRITERIA THROUGH SUN NIGHT. LONG TERM... TUE AND FRI...SMALL CRAFT WINDS AND SEAS ARE POSSIBLE. && .FIRE WEATHER... DESPITE DRY CONDITIONS OVER SRN NH AND SW ME...RH VALUES WILL BE ON THE RISE SUNDAY AND MONDAY...AS WILL BE THE THREAT OF SHRA. WINDS WILL ALSO BE LIGHT THRU THE PERIOD...GENERALLY 10 MPH OR LESS. && .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && $$ NEAR TERM...CEMPA SHORT TERM...CEMPA LONG TERM...SCHWIBS

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