033
FXUS66 KEKA 192214
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
314 PM PDT Wed Jun 19 2024

.SYNOPSIS...Dry weather is expected for the foreseeable future.
Interior temperatures will warm up toward the end of week with
temperatures approaching 100 degrees in some interior valley
locations Friday into Saturday.

&&

.DISCUSSION...Extensive stratus and fog has been clinging to the
coastline from the Oregon border to Pt Arena today. Marine layer
was quite shallow but should start to deepen tonight into Thu as
a 500mb trough slowly moves across the area. With a deeper marine
layer and steady northerly breezes, expect greater stratus and
fog intrusion into the coastal river valleys over the next couple
of nights and mornings. Increasing northerly winds offshore will
result in coastal stratus and fog through the week with temperatures
remaining near or below normal along the coast.

Otherwise, upper level troughing over the area will begin to
break down on Thu and 850 mb temperatures will warm across the
interior allowing some interior valleys to approach 100 degrees
Friday into Saturday. Heat risk is forecast to increase to moderate
levels by Friday and persist in Saturday when high temperatures
are forecast to peak. Sunday will also be quite hot, especially
in Trinty county where max temperatures around 100F are probable.

National Blend of Models (NBM) remains consistent with interior
temperatures trending down Sunday into early next next week as
another trough approaches the area, lowering 500mb heights and
diminishing 850mb temperatures. The trough next week is looking
sharper than the current trough and may bring showers to portions
of Oregon and Washington and a dry frontal passage to our region.
This trough could once again bring strong and gusty NW winds into
Mendocino and Lake counties next week. Right now, NBM
probabilities for gusts to 30 mph or more are no more than
30% for this weekend and early next week. DB

&&

.AVIATION...Marine stratus clouds were more extensive and persistent
along the NW Coast today...IFR conditions lingered into afternoon at
ACV and CEC. There was brief partial clearing along a few sections
of the coast. Inland areas were generally SKC. However, satellite
imagery showed smoke/haze over inland mountain areas...especially
Lake, NE Mendocino and southern Trinity Counties. Thursday
morning: stratus will persist along the coast while some wildfire
smoke will cover more of the area. /TA

&&

.MARINE...Northerlies continue to decrease into today, but will remain
in small craft criteria for all zones except the northern inner
waters. Each afternoon there will be a slight uptick in northerlies
with the highest winds (still below gale conditions) occurring in
the lee of Cape Mendocino. Coverage for the expansion fan will be
sufficient to keep a small craft advisory in the southern outer
waters through the end of the week; however, by this afternoon only
a small portion of the southern inner waters, just south of the
Cape, will have small craft winds. Due to this, the small craft
advisory for the southern inner waters will expire this afternoon.
High resolution wind models and NBM indicate that the outer zones
will remain in small craft conditions through the end of the week
with another slight increase in winds into this weekend as a result
of high pressure building into the region. Seas will remain steep
through the week due to the winds, especially in the outer waters.
Two to three foot, long period westerly and southwesterly swells
will continue through the waters into the end of the week. /JLW

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory until 3 PM PDT this afternoon for
     PZZ455.

     Small Craft Advisory until 3 AM PDT Friday for PZZ470-475.

&&

$$

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For forecast zone information
see the forecast zone map online:
https://www.weather.gov/images/eka/zonemap.png