####018003983####
FXUS66 KEKA 092157

AFDEKA



AREA FORECAST DISCUSSION

National Weather Service Eureka CA

257 PM PDT Thu May 9 2024



.SYNOPSIS...A Pacific ridge of high pressure will continue to 

bring warm temperatures through Saturday. This combination of 

elements will allow for unseasonably warm and possibly record high

temperatures closer to the coast on Friday, but the coast is

expected to be back closer to normal for the weekend. A cooling 

trend is expected for Sunday and Monday with hot temperatures

returning for the middle of the week.



&&



.DISCUSSION...High pressure and offshore flow have brought clear

skies and dry conditions. This offshore flow brought warm

temperatures to the coast with KEKA reaching 69 degrees and KACV

reaching 75 degrees. KEKA has fallen short of the record high for

the date of 73 degrees. Tonight skies are expected to remain clear

for the most part, although some patchy ground fog is possible

along the coast with the lighter winds tonight. Frost is not

expected again tonight. Winds will be lighter, but it is 5 to 10 

degrees warmer than yesterday this afternoon and it will likely 

have trouble falling into the mid 30s in all but the very coldest

spots. Another warm day is expected Friday. Most areas will likely

be a few degrees warmer than today and winds may be slightly

weaker. 



Friday night into Saturday the upper level ridge is starting to

flatten. With this models are showing a southerly surge south of 

Cape Mendocino. This is expected to bring some stratus with it, 

although the models aren't showing that too much yet. 

Temperatures will likely cool at the coast and the near coastal

areas and remain in the 60s. Farther inland temperatures will 

remain similar to Friday. Saturday night into Sunday the trough

moves closer and a more widespread and deeper marine layer is

expected by Sunday morning. This may bring some drizzle to the

coastal areas. Inland areas are expected to drop down into the low

to mid 80s. A shower or two is possible over the higher terrain 

of eastern Trinity county. Thunder potential remains around a 5 to

10 percent chance so have removed that from the forecast. This 

will need to be monitored as it gets closer. 



Tuesday and Wednesday high pressure is expected to build back 

into the area with highs returning to around 90 in the inland 

areas and this may also come with offshore flow to keep the 

coastal areas clear. Breezy north winds are expected as well. MKK



&&



.AVIATION...VFR conditions prevailed across northwest California 

airfields today with breezy afternoon winds. VFR conditions should 

persist through the remainder of the TAF period with some minor 

visibility reductions from haze possible, especially along the 

coast. Otherwise expect winds to decrease after sunset and become 

light and variable overnight. KMZ



&&



.MARINE...North winds and steeper waves will continue to ease through 

tonight. Small craft advisories were extended through 9 PM tonight 

across the northern waters as afternoon buoy observations were still 

showing steep waves reaching advisory level thresholds. Then mild 

marine conditions will develop Friday through Saturday with moderate 

afternoon northerly winds and some small northwest and south swell 

systems. Conditions begin to change on Sunday as north winds 

increase again with gales possible early next week. KMZ



&&



.EKA WATCHES/WARNINGS/ADVISORIES...

CA...

None.

NORTHWEST CALIFORNIA COASTAL WATERS...

     Small Craft Advisory until 9 PM PDT this evening for 

     PZZ450-470-475.



&&



$$



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For forecast zone information

see the forecast zone map online:

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