000 FXUS61 KCAR 061947 AFDCAR AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CARIBOU ME 245 PM EST SAT APR 6 2002 .SYNOPSIS...WEAK LOW PRESSURE NEAR WESTERN NOVA SCOTIA WILL SLIP EAST TONIGHT AS HIGH PRESSURE BUILDS IN FROM THE WEST. THE HIGH WILL BACK SOUTH ON SUNDAY AND SUNDAY NIGHT AS A WARM FRONT APPROACHES. THE WARM FRONT WILL MOVE NORTH ACROSS THE REGION MONDAY AND MONDAY NIGHT...AND THEN A COLD FRONT WILL MOVE THROUGH TUESDAY NIGHT. .DISCUSSION...AN INVERTED LOW LEVEL TROUGH THROUGH THE EAST CENTRAL PART OF THE REGION HAS BEEN BRINGING A LOCALIZED AREA OF SNOW TO SOUTHEAST AROOSTOOK AND NORTHERN WASHINGTON COUNTY TODAY. THE SNOW WILL TAPER OFF TO SNOW SHOWERS TONIGHT WITH LITTLE OR NO SIGNIFICANT ADDITIONAL ACCUMULATION EXPECTED. HIGH PRESSURE WILL BUILD IN TONIGHT ALLOWING TEMPERATURES TO FALL INTO THE 20S AND TEENS IN MANY AREAS. TEMPERATURES WILL THEN RECOVER QUICKLY ON SUNDAY AS SUNSHINE WARMS THE AIR BENEATH RISING HEIGHTS. AS THE HIGH MOVES AWAY SUNDAY NIGHT INTO MONDAY A WARM FRONT WILL APPROACH BRINGING CLOUDS AND A CHANCE FOR SOME LIGHT RAIN SOUTH AND LIGHT SNOW AND RAIN NORTH. WARM ADVECTION WILL MAINTAIN CLOUDS AND LIGHT RAIN INTO TUESDAY BEFORE A COLD FRONT COMES IN TUESDAY NIGHT. HIGH PRESSURE BEHIND THE COLD FRONT WILL BRING DRYER CONDITIONS WEDNESDAY INTO THE END OF THE WEEK. SIGNIFICANT WARMING IS POSSIBLE LATE IN THE WEEK AS WEDNESDAYS HIGH MOVES EAST OF THE AREA BUILDING A RIDGE. COASTAL WATERS: WINDS MAY BRIEFLY INCREASE TO NEAR SCA CRITERIA AROUND MIDNIGHT TONIGHT...OTHERWISE WINDS ARE EXPECTED TO BE BELOW 25 KT. .CAR...NONE. MCB