132
FXUS66 KMFR 091826
AFDMFR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEDFORD OR
1126 AM PDT MON MAR 9 2026
UPDATED AVIATION DISCUSSION
DISCUSSION
/ISSUED 307 AM PDT MON MAR 9 2026/
ONSHORE FLOW HAS PUSHED PLENTY OF MARINE MOISTURE
INLAND THIS MORNING, WITH CLOUD BANKED UP AGAINST THE WESTERN
SLOPES OF THE CASCADES AND THE NORTHERN SLOPES OF THE SISKIYOUS.
THE EXTENSIVE LOW LEVEL CLOUDINESS HAS PREVENTED FOG FORMATION FOR
MOST AREAS, BUT WE CAN NOT RULE OUT SOME LOCALIZED FOG WHERE
SKIES REMAIN MOSTLY CLEAR. SOME LIGHT RAIN SHOWERS HAVE ALSO
ACCOMPANIED THIS MARINE PUSH, BUT HAS BEEN VERY LIGHT. THAT FALL
CAN PROVIDE ENOUGH MIXING TO LIMIT FOG DEVELOPMENT AS WELL.
A SEMI-ZONAL FLOW PATTERN WILL GUIDE MOISTURE TO THE PACIFIC
COAST THROUGH MUCH OF THE FORECAST PERIOD, ALTHOUGH MUCH OF THE
ACTIVITY IS EXPECTED TO STAY NORTH OF THE AREA, WHERE A FRONT WILL
BECOME STALL OUT FOR MUCH OF THE WEEK. WITH OUR FORECAST AREA
REMAINING SOUTH OF THE MAIN BELT OF MOISTURE FLOW, MOST RAIN WILL
STAY TO OUR NORTH AS WELL. WITH A LACK OF UPPER LEVEL SUPPORT, ANY
SHOWERS THAT DO DEVELOP WILL BE A RESULT OF TOPOGRAPHIC LIFT,
MAINLY ALONG THE COAST, OVER COASTAL RANGES, AND ALONG THE
CASCADES.
ALSO, A TIGHT PRESSURE GRADIENT BETWEEN A LOW PRESSURE SYSTEM IN
THE GULF OF ALASKA AND THE PACIFIC RIDGE WILL COMBINE WITH
STRONGER MID-LEVEL WINDS TO ALLOW FOR BREEZY TO GUSTY WINDS OVER
AREA TERRAIN AND ACROSS THE EAST SIDE IN THE AFTERNOONS AND
EVENINGS, ESPECIALLY WEDNESDAY AND THURSDAY.
OTHERWISE, WEATHER CONDITIONS WILL BE MOSTLY QUIET, WITH
A STEADY WARMING TREND THROUGH THE WEEK.
AVIATION...08/18Z TAFS
LOTS OF VFR CEILINGS TODAY AROUND 3500 TO
4000 FEET WITH SOME AREAS ALONG THE COAST BRIEFLY REPORTING MVFR
CEILINGS. OTHERWISE, LOOK FOR PLENTY OF CUMULUS BUILD UP THIS
AFTERNOON AS COOLER MOIST AIR MOVES IN OVER LAND AND THIS MID MARCH
SUN. WE SHOULD SEE MORE VFR CEILINGS TONIGHT.
MARINE...UPDATED 1130 AM PDT MONDAY, MARCH 9, 2026
ADVISORY
LEVEL NORTH WINDS AND STEEP, CHOPPY SEAS ARE EXPECTED SOUTH OF
PORT ORFORD TONIGHT WITH LIGHTER WINDS AND LOWER SEAS TO THE
NORTH. SLIGHTLY STRONGER NORTH WINDS SOUTH OF GOLD BEACH THIS
AFTERNOON AND EVENING COULD BRING VERY STEEP, HAZARDOUS SEAS. WIND
WAVE DOMINATED SEAS TRANSITION TO STEEP WEST- NORTHWEST SWELL ON
TUESDAY, FOLLOWED BY INCREASED SOUTH WINDS WEDNESDAY INTO
THURSDAY.
MFR WATCHES/WARNINGS/ADVISORIES
OR...CA...NONE.
PACIFIC COASTAL WATERS...SMALL CRAFT ADVISORY UNTIL 11 PM PDT TUESDAY
FOR PZZ356-376.
SMALL CRAFT ADVISORY FROM 5 AM TUESDAY TO 5 PM PDT WEDNESDAY FOR
PZZ350-370.
HAZARDOUS SEAS WARNING UNTIL 5 AM PDT TUESDAY FOR PZZ356-376.
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