424
FXUS66 KMFR 181640
AFDMFR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEDFORD OR
840 AM PST SAT JAN 18 2025
DISCUSSION
SATELLITE IMAGE SHOWS LOW CLOUDS AND PATCHY TO AREAS
OF FOG AND FREEZING FOG IN THE UMPQUA BASIN, ILLINOIS VALLEY,
GRANTS PASS AREA AND ROGUE VALLEY. LIKE YESTERDAY. THE LOW CLOUDS
AND FOG ARE EXPECTED TO PERSIST THROUGH THE MORNING, FOLLOWED BY
A GRADUAL BURN OFF IN THE AFTERNOON. A FEW ADJUSTMENTS WERE MADE
TO THE FORECAST TODAY TO REFLECT THE ABOVE. THE REST OF THE
FORECAST IS ON TRACK AND NO OTHER CHANGES ARE NEEDED.
NO MUCH CHANGE IN THE PATTERN IS EXPECTED FOR THE NEXT SEVERAL
DAYS WITH THE WEATHER FROM ONE DAY TO THE NEXT NOT VARYING MUCH.
-PETRUCELLI
AVIATION...18/12Z TAFS
A DEEP MARINE LAYER IS IMPACTING
INTERIOR WEST SIDE VALLEYS THIS MORNING. ROSEBURG IS CURRENTLY MVFR
WITH A CEILING WAVERING BETWEEN 1100-1600 FT. THIS COULD LOWER TO
IFR THIS MORNING FOR A WHILE BEFORE LIFTING BACK TO MVFR LATE
MORNING/AFTERNOON. CEILINGS COULD THEN RISE TO VFR BRIEFLY LATE
THIS AFTERNOON, BUT IFR/MVFR CONDITIONS RETURN TONIGHT. A SIMILAR
SITUATION IS OCCURRING IN MEDFORD, BUT LIFR FOG IS LIMITING
VISIBILITY TO 1/4 OF A MILE AT TIMES. THIS WILL CONTINUE THROUGH MID-
LATE MORNING BEFORE LIFTING TO A CEILING, THEN BREAKING FOR A COUPLE
OF HOURS THIS AFTERNOON/EVENING. EXPECT LOWER CONDITIONS TO RETURN
AS WELL TONIGHT. ELSEWHERE, VFR WILL PREVAIL THROUGH LATE TONIGHT.
-SPILDE
MARINE...UPDATED 830 AM SATURDAY, JANUARY 18, 2025
VARYING
STRENGTH IN A THERMAL ALONG THE COAST WILL KEEP MODERATE NORTH
WINDS AND STEEP SEAS OVER THE WATERS SOUTH OF CAPE BLANCO AT TIMES
THIS WEEKEND. CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT TODAY,
ESPECIALLY BEYOND 10 NM FROM SHORE. WINDS EASE A BIT TONIGHT, BUT
MAY INCREASE AGAIN SUNDAY AFTERNOON AND NIGHT RESULTING IN STEEP
SEAS. WINDS DO WEAKEN ENOUGH MONDAY INTO TUESDAY FOR CONDITIONS
TO FALL BELOW ADVISORY LEVELS AND REMAIN THAT WAY THROUGH
THURSDAY. ANOTHER PERIOD OF MODERATE TO STRONG NORTH WINDS
AND STEEP SEAS IS POSSIBLE FRIDAY INTO NEXT WEEKEND. -SPILDE
MFR WATCHES/WARNINGS/ADVISORIES
OR...AIR STAGNATION ADVISORY UNTIL 10 AM PST TUESDAY FOR ORZ021-
023>026-029>031.
BEACH HAZARDS STATEMENT FROM 1 PM PST THIS AFTERNOON THROUGH
SUNDAY AFTERNOON FOR ORZ021-022.
FREEZING FOG ADVISORY UNTIL NOON PST TODAY FOR ORZ024-026.
CA...NONE.
PACIFIC COASTAL WATERS...BEACH HAZARDS STATEMENT FROM 1 PM PST THIS
AFTERNOON THROUGH SUNDAY AFTERNOON FOR PZZ350-356.
SMALL CRAFT ADVISORY UNTIL 4 PM PST THIS AFTERNOON FOR PZZ376.
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