Area Forecast Discussion
Issued by NWS Portland, ME

Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KGYX 242247 AFDGYX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAY ME 647 PM EDT SUN AUG 24 2014 .SYNOPSIS... HIGH PRESSURE WILL HOLD OVER NEW ENGLAND MONDAY THROUGH TUESDAY. A COLD FRONT WILL DROP SOUTH THROUGH THE REGION ON WEDNESDAY. HIGH PRESSURE WILL BEGIN TO BUILD TOWARDS THE REGION THURSDAY...BEFORE REMAINING OVER NEW ENGLAND FRIDAY AND SATURDAY. A SLOW MOVING FRONT WILL APPROACH FROM THE WEST SUNDAY. && .NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
-- Changed Discussion --
UPDATED TO LOWER SKY COVER MOST AREAS THRU THE NGT WITH CLR OR MOSTLY CLR EXPECTED OUTSIDE OF DEVELOPING FOG IN VALLEYS OVERNIGHT. AFTER SUNSET CLEAR SKIES AND LIGHT WINDS WILL PROMOTE A QUICK DROP IN TEMPS. INCREASING MOISTURE WITHIN THE BOUNDARY LAYER WILL KEEP MIN TEMPS A FEW DEGREES WARMER THAN LAST NIGHT HOWEVER. SFC RIDGE AXIS MOVES CLOSER...AND THUS EXPECT ANOTHER ROUND OF VALLEY FOG OVERNIGHT. AFTER MIDNIGHT IT WILL BE LOCALLY DENSE IN THE LARGER RIVER VALLEYS.
-- End Changed Discussion --
&& .SHORT TERM /6 AM MONDAY MORNING THROUGH MONDAY NIGHT/... ON MON H8 TEMPS CLIMB TO AROUND 15 C ACROSS THE AREA. FORECAST SOUNDINGS INDICATE MIXING CLOSE TO THIS LEVEL DURING THE AFTERNOON...WHICH SUPPORTS HIGH TEMPS IN THE MID 80S ACROSS THE INTERIOR...AND LOW 80S IN THE NORTH COUNTRY. SEA BREEZES SHOULD DEVELOP ALONG THE COAST AND CAP WARMTH SOMEWHAT HOWEVER. HIGH PRES REMAINS IN CONTROL MON NIGHT...WITH MORE CLEAR SKIES AND LIGHT WINDS. MORE VALLEY FOG WILL BE POSSIBLE UNDER THESE CONDITIONS. && .LONG TERM /TUESDAY THROUGH SUNDAY/... A GRADUAL INCREASE IN WARMTH AND HUMIDITY WILL CONTINUE ON TUESDAY TO BEGIN THE LONG RANGE PORTION OF THE FORECAST. IT WILL CONTINUE TO BE A LITTLE COOLER ALONG THE COAST DUE TO AN ONSHORE WIND...WITH 70S AS WELL IN THE MOUNTAINS. BY WEDNESDAY...ALL MODELS WITHIN THE 12Z MODEL SUITE ARE NOW IN GOOD AGREEMENT WITH THE TIMING OF THE APPROACHING COLD FRONT WEDNESDAY INTO WEDNESDAY EVENING. SCATTERED SHOWERS WILL DEVELOP WITH THIS SYSTEM...WITH ISOLATED CONVECTION DURING THE AFTERNOON AND EARLY EVENING HOURS. ON THURSDAY...THE UPPER LEVEL IMPULSE WILL TRIGGER A COUPLE SHOWERS OVER THE UPSLOPE FACING HIGHER TERRAIN OF THE MOUNTAINS. ELSEWHERE IT WILL REMAIN DRY...BUT IT WILL ALSO FEEL QUITE A BIT COOLER THAN THE EARLIER PORTION OF THE WEEK. HIGH PRESSURE WILL CONTINUE TO BRING DRY CONDITIONS TO THE REGION INTO NEXT WEEKEND...ALONG WITH COOLER...BELOW NORMAL TEMPERATURES. && .AVIATION /00Z MONDAY THROUGH FRIDAY/...
-- Changed Discussion --
SHORT TERM /THROUGH MONDAY NIGHT/...DIURNAL CU WITH BASES AROUND 5 KFT WILL DISSIPATE QUICKLY AFTER SUNSET. EXPECT ANOTHER ROUND OF FOG WITH SFC RIDGE AXIS MOVING CLOSE TO THE HUDSON VALLEY. EXPECT LOCALLY DENSE FOG IN THE LARGER RIVER VALLEYS ONCE AGAIN...WITH LIFR CIGS/VSBYS MOST LIKELY AT KLEB AND KHIE...BUT ALSO FORMING IN OTHER VALLEYS THAT WOULD IMPACT PLACES LIKE KCON. FOG WILL LIFT AROUND 12Z...EXCEPT FOR KLEB WHICH MAY LINGER UNTIL NEAR 14Z... SIMILAR TO THE TIMING OF THE FOG LIFTING THIS MORNING. DIURNAL CU POSSIBLE AGAIN MON...BUT NO FLIGHT RESTRICTIONS ARE EXPECTED. SEA BREEZES ARE EXPECTED TO DEVELOP AT KPWM...KPSM...AND KRKD. ANOTHER CLEAR NIGHT SHOULD PROMOTE MORE VALLEY FOG MON NIGHT. LONG TERM...VFR EXCEPT AREAS OF IFR CONDITIONS DEVELOPING IN SHOWERS AND ISOLATED THUNDERSTORMS WITH A FRONTAL PASSAGE WEDNESDAY AND WEDNESDAY NIGHT.
-- End Changed Discussion --
&& .MARINE...
-- Changed Discussion --
.SHORT TERM /TONIGHT THROUGH MONDAY NIGHT/...UPDATED TO MAKE MINOR ADJUSTMENTS TO THE FCST OVERNIGHT AND MONDAY BUT OVERALL HIGH PRESSURE KEEPS WINDS AND SEAS WELL BELOW SCA THRESHOLDS. .LONG TERM...A FEW LONG PERIOD SWELLS WILL BE EXPECTED LATE IN THE WEEK...BUT THESE WILL BE MINOR.
-- End Changed Discussion --
&& .GYX WATCHES/WARNINGS/ADVISORIES... ME...NONE. NH...NONE. MARINE...NONE. && $$

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.