926 
FXUS66 KEKA 301120
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
420 AM PDT Sat Mar 30 2019

.SYNOPSIS...Dry weather is expected today and Sunday, followed by
the development of light rain during Sunday night and Monday. 
Wet and unsettled weather will continue during much of next week,
with heavy rain possible on Friday.

&&

.DISCUSSION...Midlevel heights were rising across the west coast 
downstream from an upper trough located over the NERN PAC.
The resultant dry subsident large-scale regime was favoring 
mainly clear skies, with the exception of patchy valley/coastal 
fog/stratus. In addition, robust radiational cooling was aiding in
temperatures in the low to mid 30s across Trinity and 
northeastern Mendocino County...these temperatures support the
inherited Frost Advisory.

Midlevel ridging is forecast to continue through Sunday, which
will likely preclude the onset of precipitation until Sunday night
as height falls occur with the approach of an upper disturbance.
Model guidance indicates rain will persist through Tuesday night,
followed by dissipation during Wednesday as upper ridging occurs 
once again.

Additional episodes of precipitation are probable after
Wednesday...particularly on Friday as a strong frontal system
moves east across the region.

JMG

&&

.AVIATION...VFR is expected to prevail through the next 24 hours 
or so as high pressure builds over the area. Isolated areas of 
early morning fog and low clouds are possible...especially across 
the interior valleys but increasing sun angles should help erode 
these clouds by mid to late morning...giving way to widespread vfr
by the afternoon. 

&&

.MARINE...Fairly tranquil marine conditions are expected for the 
next couple of days as light northerlies persist and high pressure
builds over the region. A weak weather system will arrive late 
Sunday and bring a return of southerlies but wind speeds are 
expected to remain below SCA at this time. A series of small mid 
to long period swell groups will propagate into NW California 
waters through mid next week. 

&&

.BEACH HAZARDS...A long period WNW swell is forecast to arrive 
late afternoon into the evening hours of Sunday. The energy from 
this swell will initially be too low to pose a threat for sneaker 
waves on Sunday. The swell will build Sunday night into Monday 
morning, however conditions do not appear favorable for a sneaker 
wave setup due to poor weather conditions and the presence of 
shorter period wave energy. For now, we will just add a mention of
possible sneaker waves in the Hazardous Weather Outlook. 
Beachgoers should remain vigilant, especially Sunday night/Monday 
morning.

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...Frost Advisory until 8 AM PDT this morning for CAZ110-111.

NORTHWEST CALIFORNIA COASTAL WATERS...None.
&&

$$

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