Area Forecast Discussion
Issued by NWS Eureka, CA
FXUS66 KEKA 262257
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
357 PM PDT TUE JUL 26 2016
.SYNOPSIS...Strong high pressure will continue to bring hot
interior temperatures through mid-week with triple digit
temperatures across portions of the interior. Coastal areas will
continue to see a mix of clouds and sun as the marine layer
fluctuates in depth. Inland temperatures will start to cool this
.DISCUSSION...The marine layer thinned a bit overnight and this
morning. This fact, combined with more significant drying from SW
OR and the King Range, has allowed coastal cloudiness to erode
nicely along most coastal areas as of this writing. Some patches
of clouds remain along the immediate Redwood coast as flow
reversal continues to pile up residual moisture against the
coastal terrain. Low clouds also persist along the immediate S
Mendocino coast, although cloud-level winds continue to erode them
from the NW. Temperatures have soared over the interior due the
departure of yesterday`s weak shortwave trough and the rebuilding
of the upper high to the S with KUKI presently at 106 degrees.
Temperatures along the Pacific Coast are running in the lower to
mid 60s with the coolest readings in the areas with more recent
cloud cover or better onshore flow.
High pressure aloft will continue to gradually build over the
desert SW over the next few days, with high temperatures at many
interior locations exceeding 100 degrees. A few high valley spots
may see readings reach 110 by mid to late in the coming week with
500 MB heights building to near 597 dam over NV.
Rain chances will be low to nonexistent through early next week.
A sharpening upper trough this weekend may bring a few showers to
the N interior. However, instability parameters still look iffy,
with CIN values in excess of 100 J/kg and moisture will be
.AVIATION...Morning stratus has decreased significantly in
coverage at KCEC and KUKI, where VFR conditions are present.
However, these clouds are lurking just off shore near these
terminals. We decided to carry a scattered cloud group to account
for any periodic intrusions during the remainder of this
afternoon/evening. Overnight, ceilings will drop to less than 500
feet, with visibility reductions likely as well. Farther south at
KUKI, VFR conditions and light winds will prevail. /PD
.MARINE...The numerical models have remained consistent in their
wind/wave for several runs now. Currently we have gale warnings in
effect through 2 AM tonight for all waters from 10 to 60 nautical
miles from shore. After this time, wind gusts near 35 knots remain
possible through Wednesday night from Cape Mendocino to Point St.
George. Thus, the Gale Warning has been extended through that
South of here, from Cape Mendocino south to Point Arena, winds will
decrease to the 15 to 25 knot range by tomorrow morning and continue
through Wednesday night. Small Craft Advisories have been issued for
this time to cover this.
Closer to shore, winds will be lighter, generally in the 5 to 15
knot range. waves near 8 feet at 10 seconds will persist. Thus,
Small Craft Advisories will be maintained here through Wednesday
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory until 2 AM Thursday for PZZ450-455.
Gale Warning until 2 AM Thursday for PZZ470.
Small Craft Advisory from 3 AM Wednesday to 2 AM Thursday
Gale Warning until 3 AM Wednesday for PZZ475.
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