FXUS66 KEKA 201901

AFDEKA



AREA FORECAST DISCUSSION

National Weather Service Eureka CA

1201 PM PDT Sat Jun 20 2026



.SYNOPSIS...Generally cool and moist conditions continue today with 

isolated thunderstorms possible again in northern and eastern 

Trinity County. Warmer and drier conditions are likely early to mid 

next week.





&&





.KEY MESSAGES...



- Isolated thunderstorms are possible again in Trinity County this

  afternoon.



- Warming trend for the interior returns Sunday into next week.  





&&



.DISCUSSION...Ample low cloud cover blanketed the area this morning 

with moisture brought in from yesterday's storms. An upper level 

trough moving through the Pacific Northwest continues to move slowly 

eastward, bringing much of the moisture with it. There is some 

lingering instability in eastern Trinity, mainly in the Trinity Horn 

and the Yolla Bollys. Moisture is more limited today, but still, 

isolated dry thunderstorms are possible. Gusty, erratic winds and 

small hail are possible within stronger storms.



High temperatures rebound slightly today with 70s and 80s likely for 

most interior valleys, but high pressure more firmly begins to set up

over the area Sunday. High temperatures rise into the high 80s 

and 90s over the area. Temperatures continue to rise into early 

next week with triple digits possible for the warmest valleys by 

Monday. This warming trend is likely to continue through at least 

mid week.



Troughing to the north of the area on Tuesday could bring additional 

chances of interior thunderstorms. Confidence is not high as 

instability and moisture currently look meager, but this will need 

to be watched. Otherwise, dry and warm interior conditions are 

likely for much of next week. JB





&&



.AVIATION...(18Z TAFs)...IFR to MVFR ceilings are being observed at 

the coastal terminals, but will likely lift and scatter this 

evening. Inland areas will generally clear this afternoon, aside 

from isolated thunderstorms in eastern Trinity County. IFR to MVFR 

stratus will likely return tonight to the coastal terminals. UKI may 

see stratus as well (40% chance), but the marine layer may not be 

deep enough despite prevailing south winds. JB





&&



.MARINE...Northerly winds gradually increase today into Sunday with 

near-gale force gusts likely in the lee of Cape Mendocino and Cape 

Blanco by Sunday afternoon. Seas that are currently dominated by a 

diminishing mid period NW swell of around 5 to 7 ft will become more 

dominated by steep wind waves. Steep wind waves may propagate into 

the inner waters too, even as winds nearshore remain light. Winds 

diminish Monday into Tuesday, especially nearshore, but stronger 

winds return mid to late next week. JB





&&



.EKA WATCHES/WARNINGS/ADVISORIES...

CA...

None.

NORTHWEST CALIFORNIA COASTAL WATERS...

     Small Craft Advisory from 5 AM Sunday to 11 AM PDT Monday 

     for PZZ450.



     Small Craft Advisory from 5 AM Sunday to 3 AM PDT Monday 

     for PZZ455.



     Small Craft Advisory from 9 PM this evening to 11 AM PDT 

     Monday for PZZ470-475.



&&



$$



NOTE: The full forecast discussion is now regularly issued between

10 am/pm and 1 pm/am. Additional updates will be issued as needed.



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For forecast zone information

see the forecast zone map online:

https://www.weather.gov/images/eka/zonemap.png