FXUS66 KMFR 271744

AFDMFR



Area Forecast Discussion

National Weather Service Medford OR

1045 AM PDT Mon Oct 27 2025



.Updated Aviation Discussion. 



.DISCUSSION...Satellite image shows low clouds over most of the

interior valleys both west and east of the Cascades. However fog

has been limited to just a few isolated locations and a look at

several of the web cams where the dense fog advisory was in effect

show just a low cloud deck. Therefore the dense fog advisory has

been cancelled. Additionally, the low clouds and patchy fog 

forming due to recent precipitation has put a cap on the amount

of cooling last night and temperatures are starting above

freezing. Therefore the frost advisory also has been cancelled. 



Above the low cloud deck in the valleys is mostly clear skies with

scattered high level clouds moving in from the northwest over the

northern part of our forecast area. 



It will be dry today as upper ridging builds into the area. Low

clouds in the valleys could persist into early this afternoon

before burning off, but once it does we'll have mostly clear

skies. 



Tonight will be mostly clear and dry, but we could see low clouds

and patchy fog form again for most of the interior valleys later

tonight and lasting into Tuesday morning. 



Adjustments were made to the forecast today through Tuesday

afternoon to account for the above mentioned. -Petrucelli 





&&



.AVIATION...27/18Z TAFs...Satellite image shows low clouds confined 

to most of the Rogue Valley, Grants Pass area, Illinois Valley and 

portions ofthe Umpqua Basin, including Roseburg. However a look at 

some of the web cams show it could clear our at Roseburg withing the 

hour. Meanwhile low clouds elsewhere will be slow to burn off. The 

TAF at Medford shows ceilings improving to VFR at 20z, but this 

could be delayed by an hour, so watch for updates. 



VFR conditions are expected later this afternoon through the end of 

the TAF period for most locations. There's some indication of a 

drier air mass moving in which could limit or delay the onset of low 

clouds and fog in most of the valleys, or if the drying is 

significant enough, will prevent it from forming altogether at the 

Medford and Roseburg terminals. For now, have leaned towards low 

clouds and reduced visibility, but later shifts will need to take 

another look at this. 



Confidence is higher for low clouds to form in the Grans Pass area 

and Illinois Valley late tonight and lasting into most of Tuesday 

morning. -Petrucelli





&&



.MARINE...Updated 800 AM PDT Monday, October 27, 2025...Relatively 

calmer conditions are expected through Tuesday night. 



A front will move through the waters Wednesday. A thermal trough 

will develop behind the front Wednesday afternoon bringing moderate 

to occasionally strong north winds south of Cape Blanco, with Small 

Craft conditions possible. This should be a short duration event 

with the thermal trough expected to expand north and weaken Thursday.



There's good agreement another front will slowly move towards the 

marine waters towards the end of the week with winds becoming south. 

The front is expected to stay far enough north to keep wind speeds 

in check, but it's still a ways out and the forecast could change in 

the days to come. -Petrucelli





&&



.MFR WATCHES/WARNINGS/ADVISORIES...

OR...None.



CA...None.



PACIFIC COASTAL WATERS...None.



&&



$$