Area Forecast Discussion
Issued by NWS Eureka, CA
Issued by NWS Eureka, CA
263 FXUS66 KEKA 222130 AFDEKA AREA FORECAST DISCUSSION National Weather Service Eureka CA 230 PM PDT Wed Jul 22 2026 .SYNOPSIS...Monsoonal moisture has exited the region, ending the risk for isolated thunderstorms. Today, the remnants of the tropical storm will cool the interior, and aid in warming most coastal areas. Drier weather is expected late in the week with temperatures near or slightly below seasonal normals for the interior. && .DISCUSSION...Today, the remnants of Tropical Storm Elida (now a weaker non-tropical surface low pressure system) will move closer to Northwest California as it continues north. As a result, southerly offshore flow will continue to keep max temperatures along the coast slightly warmer than average. This will especially be prevalent from southwest Humboldt, through the coastal Eel River Valley and around Humboldt Bay. Generally, southerly gusty winds (gusting from about 20 to 25 mph) will also affect coastal headlands around Cape Menocino and the King Range up to Humboldt Bay; and interior ridges from extreme northern Mendocino up through Trinity County. There is a 75 to 80 percent chance for gusts over 30 mph for exposed coastal ridges around the King Range and between Cape Mendocino and Ferndale this afternoon and early evening. Winds will quickly die off this evening as the surface level low pressure system moves away from the region. Thursday through early next week, the surface level low pressure system will move away from Northwest California while the upper level low will still exert influence over the region. Cooler, more seasonal temperatures will continue for the whole region late this week and through the weekend. Meanwhile, a deeper diurnal coastal stratus layer is anticipated along coastal areas. At the same time, an upper level high pressure system centered over the Southwestern US will try to edge into the region bringing generally drier and warmer conditions for interior regions of Northwest California. /JLW && .AVIATION...Most terminals in Northwest California have cleared out to VFR this afternoon. However, southerly flow along the coast has made coastal stratus stubborn and persistent for Del Norte County and the coast from Cape Mendocino south through Shelter Cove to Westport. These coastal terminals have maintained IFR to MVFR conditions into early afternoon. Some lifting could occur in these areas into early evening. A deeper stratus layer is anticipated for coastal terminals late this evening and overnight bringing potential for IFR to LIFR ceilings. Due to the deep marine layer, stratus will make it further inland which could potentially affect KUKI with MVFR ceilings. /JLW && .MARINE...A remnant tropical system is passing through the waters Today. As it passes, areas of near gale strength southerly wind gusts will continue in the northern waters around and north of Cape Mendocino, including the northern inner waters from the mouth of the Eel River to along Humboldt and Arcata Bay. These winds will quickly ease tonight. Winds and seas will then remain low for the remainder of the week and gradually shift northward by late weekend. JJW && .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... None. && $$ 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