FXUS66 KEKA 210721 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 1221 AM PDT Sun Jun 21 2026 .SYNOPSIS...High pressure will begin to regain control of the area. Temperatures rebound today with warmer and drier conditions likely early to mid this coming week. && .KEY MESSAGES... - Warming trend for the interior returns today and will continue into next week. - Troughing to the north of the area on Tuesday could bring additional chances of interior thunderstorms. && .DISCUSSION...High pressure more firmly sets in over Northwest California today. High temperatures rise into the high 80s and 90s over interior areas. Temperatures continue to rise into early this coming 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 this coming week week. JB && .AVIATION...MVFR to IFR/LIFR stratus will continue to fill in along the coast affecting the coastal terminals. Stratus will be more shallow early this morning, keeping lower ceilings/visibilities closer to the coast. There could be some clearing this afternoon/evening before stratus restrengthens overnight tonight. Stratus is not expected to move up the Russian River Valley into KUKI this morning. && .MARINE...Northerly winds gradually increase today with near-gale force gusts likely in the lee of Cape Mendocino and Cape Blanco by this 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 early this morning to 11 AM PDT Monday for PZZ450. Small Craft Advisory from 5 AM early this morning to 3 AM PDT Monday for PZZ455. Small Craft Advisory until 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. Visit us at https://www.weather.gov/eureka Follow us on Facebook and Twitter at: https://www.facebook.com/NWSEureka https://www.twitter.com/NWSEureka For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png