Small Craft Advisory 82, NWS Eureka, CA

278 
WHUS76 KEKA 132202
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
302 PM PDT Sun Jul 13 2025

PZZ470-140615-
/O.CON.KEKA.SE.W.0026.000000T0000Z-250714T0000Z/
/O.CON.KEKA.GL.W.0038.250714T0000Z-250715T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
302 PM PDT Sun Jul 13 2025

...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 5 PM PDT THIS
AFTERNOON...
...GALE WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 7 to 11 feet. For the Gale Warning, north winds 
  30 to 40 kt with gusts up to 50 kt and seas 12 to 17 feet 
  expected.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...For the Hazardous Seas Warning, until 5 PM PDT this 
  afternoon. For the Gale Warning, until 11 AM PDT Tuesday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-140615-
/O.CON.KEKA.SC.Y.0082.000000T0000Z-250714T1800Z/
/O.CON.KEKA.SE.W.0027.250714T1800Z-250715T1800Z/
Pt St George to Cape Mendocino out 10 nm-
302 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
MONDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 11 AM MONDAY TO
11 AM PDT TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 8 to 13 feet expected. For the Small Craft 
  Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt 
  and seas 6 to 9 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, from 11 AM Monday to 11 
  AM PDT Tuesday. For the Small Craft Advisory, until 11 AM PDT 
  Monday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ475-140615-
/O.CON.KEKA.SC.Y.0081.000000T0000Z-250714T1800Z/
/O.CON.KEKA.SE.W.0027.250714T1800Z-250715T1800Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
302 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
MONDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 11 AM MONDAY TO
11 AM PDT TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 11 to 16 feet expected. For the Small Craft 
  Advisory, north winds 15 to 25 kt with gusts up to 35 kt and 
  seas 9 to 14 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...For the Hazardous Seas Warning, from 11 AM Monday to 11 
  AM PDT Tuesday. For the Small Craft Advisory, until 11 AM PDT 
  Monday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-140615-
/O.CON.KEKA.SC.Y.0083.250715T0000Z-250715T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
302 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM MONDAY TO
11 AM PDT TUESDAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 35 kt and 
  seas 6 to 11 feet expected.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...From 5 PM Monday to 11 AM PDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

482 
WHUS76 KEKA 140053
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
553 PM PDT Sun Jul 13 2025

PZZ470-140900-
/O.CON.KEKA.GL.W.0038.000000T0000Z-250715T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
553 PM PDT Sun Jul 13 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY...

* WHAT...North winds 30 to 40 kt with gusts to 50 kt and seas 12 
  to 17 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 11 AM PDT Tuesday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-140900-
/O.CON.KEKA.SC.Y.0082.000000T0000Z-250714T1800Z/
/O.CON.KEKA.SE.W.0027.250714T1800Z-250715T1800Z/
Pt St George to Cape Mendocino out 10 nm-
553 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
MONDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 11 AM MONDAY TO
11 AM PDT TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 8 to 13 feet expected. For the Small Craft Advisory, north
  winds 10 to 20 kt with gusts to 30 kt and seas 6 to 9 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, from 11 AM Monday to 11 
  AM PDT Tuesday. For the Small Craft Advisory, until 11 AM PDT 
  Monday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ475-140900-
/O.CON.KEKA.SC.Y.0081.000000T0000Z-250714T1800Z/
/O.CON.KEKA.SE.W.0027.250714T1800Z-250715T1800Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
553 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
MONDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 11 AM MONDAY TO
11 AM PDT TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 11 to 16 feet expected. For the Small Craft Advisory, north
  winds 15 to 25 kt with localized gusts to 35 kt and seas 9 to 
  14 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...For the Hazardous Seas Warning, from 11 AM Monday to 11 
  AM PDT Tuesday. For the Small Craft Advisory, until 11 AM PDT 
  Monday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-140900-
/O.CON.KEKA.SC.Y.0083.250715T0000Z-250715T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
553 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM MONDAY TO
11 AM PDT TUESDAY...

* WHAT...Northwest winds 10 to 20 kt with localized gusts to 35 
  kt and seas 6 to 11 feet expected.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...From 5 PM Monday to 11 AM PDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

955 
WHUS76 KEKA 140611
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1111 PM PDT Sun Jul 13 2025

PZZ475-141415-
/O.EXT.KEKA.SC.Y.0081.000000T0000Z-250715T0400Z/
/O.CAN.KEKA.SE.W.0027.250714T1800Z-250715T1800Z/
/O.EXB.KEKA.GL.W.0038.250715T0400Z-250715T1600Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1111 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM PDT MONDAY...
...GALE WARNING IN EFFECT FROM 9 PM MONDAY TO 9 AM PDT TUESDAY...

* WHAT...For the Gale Warning, north winds 20 to 30 kt with gusts
  to 40 kt and seas 11 to 16 feet expected. For the Small Craft
  Advisory, north winds 15 to 25 kt with localized gusts to 35 kt
  and seas 8 to 13 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...For the Gale Warning, from 9 PM Monday to 9 AM PDT 
  Tuesday. For the Small Craft Advisory, until 9 PM PDT Monday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ470-141415-
/O.CON.KEKA.GL.W.0038.000000T0000Z-250715T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1111 PM PDT Sun Jul 13 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY...

* WHAT...North winds 30 to 40 kt with gusts to 50 kt and seas 12 
  to 17 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 11 AM PDT Tuesday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-141415-
/O.CON.KEKA.SC.Y.0082.000000T0000Z-250714T1800Z/
/O.CON.KEKA.SE.W.0027.250714T1800Z-250715T1800Z/
Pt St George to Cape Mendocino out 10 nm-
1111 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT
MONDAY...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 11 AM MONDAY TO
11 AM PDT TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and hazardous
  seas 7 to 12 feet expected. For the Small Craft Advisory, north
  winds 5 to 15 kt with gusts to 30 kt and seas 6 to 9 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, from 11 AM Monday to 11 
  AM PDT Tuesday. For the Small Craft Advisory, until 11 AM PDT 
  Monday.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-141415-
/O.CON.KEKA.SC.Y.0083.250715T0000Z-250715T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
1111 PM PDT Sun Jul 13 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM MONDAY TO
11 AM PDT TUESDAY...

* WHAT...Northwest winds 10 to 20 kt with localized gusts to 35 
  kt and seas 7 to 10 feet expected.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...From 5 PM Monday to 11 AM PDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

615 
WHUS76 KEKA 140933
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
233 AM PDT Mon Jul 14 2025

PZZ475-141745-
/O.CON.KEKA.SC.Y.0081.000000T0000Z-250715T0400Z/
/O.CON.KEKA.GL.W.0038.250715T0400Z-250715T1600Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
233 AM PDT Mon Jul 14 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 9 AM
PDT TUESDAY...

* WHAT...For the Gale Warning, north winds 20 to 30 kt with 
  gusts up to 40 kt and seas 11 to 16 feet expected. For the 
  Small Craft Advisory, north winds 15 to 25 kt with gusts up to 
  35 kt and seas 8 to 13 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...For the Gale Warning, from 9 PM this evening to 9 AM 
  PDT Tuesday. For the Small Craft Advisory, until 9 PM PDT this 
  evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ470-141745-
/O.CON.KEKA.GL.W.0038.000000T0000Z-250715T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
233 AM PDT Mon Jul 14 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY...

* WHAT...North winds 30 to 40 kt with gusts up to 50 kt and seas 
  12 to 17 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 11 AM PDT Tuesday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-141745-
/O.CON.KEKA.SC.Y.0082.000000T0000Z-250714T1800Z/
/O.CON.KEKA.SE.W.0027.250714T1800Z-250715T1800Z/
Pt St George to Cape Mendocino out 10 nm-
233 AM PDT Mon Jul 14 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 11 AM PDT TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 7 to 12 feet expected. For the Small Craft 
  Advisory, north winds 5 to 15 kt with gusts up to 30 kt and 
  seas 6 to 9 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, from 11 AM this morning 
  to 11 AM PDT Tuesday. For the Small Craft Advisory, until 11 
  AM PDT this morning.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-141745-
/O.CON.KEKA.SC.Y.0083.250715T0000Z-250715T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
233 AM PDT Mon Jul 14 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM PDT TUESDAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 35 kt and 
  seas 7 to 10 feet expected.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...From 5 PM this afternoon to 11 AM PDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

592 
WHUS76 KEKA 141746
MWWEKA

URGENT - MARINE WEATHER MESSAGE
National Weather Service Eureka CA
1046 AM PDT Mon Jul 14 2025

PZZ475-150200-
/O.CON.KEKA.SC.Y.0081.000000T0000Z-250715T0400Z/
/O.CON.KEKA.GL.W.0038.250715T0400Z-250715T1600Z/
Cape Mendocino to Pt Arena 10 to 60 nm-
1046 AM PDT Mon Jul 14 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 9 AM
PDT TUESDAY...

* WHAT...For the Gale Warning, north winds 20 to 30 kt with 
  gusts up to 40 kt and seas 11 to 16 feet expected. For the 
  Small Craft Advisory, north winds 15 to 25 kt with gusts up to 
  30 kt and seas 8 to 13 feet.

* WHERE...Cape Mendocino to Pt Arena 10 to 60 nm.

* WHEN...For the Gale Warning, from 9 PM this evening to 9 AM 
  PDT Tuesday. For the Small Craft Advisory, until 9 PM PDT this 
  evening.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ470-150200-
/O.CON.KEKA.GL.W.0038.000000T0000Z-250715T1800Z/
Pt St George to Cape Mendocino 10 to 60 nm-
1046 AM PDT Mon Jul 14 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 11 AM PDT TUESDAY...

* WHAT...North winds 30 to 40 kt with gusts up to 50 kt and seas 
  13 to 18 feet.

* WHERE...Pt St George to Cape Mendocino 10 to 60 nm.

* WHEN...Until 11 AM PDT Tuesday.

* IMPACTS...Strong winds will cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

PZZ450-150200-
/O.CON.KEKA.SC.Y.0082.000000T0000Z-250714T1800Z/
/O.CON.KEKA.SE.W.0027.250714T1800Z-250715T1800Z/
Pt St George to Cape Mendocino out 10 nm-
1046 AM PDT Mon Jul 14 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 11 AM PDT
TUESDAY...

* WHAT...For the Hazardous Seas Warning, very steep and 
  hazardous seas 8 to 13 feet expected. For the Small Craft 
  Advisory, seas 6 to 8 feet.

* WHERE...Pt St George to Cape Mendocino out 10 nm.

* WHEN...For the Hazardous Seas Warning, until 11 AM PDT 
  Tuesday. For the Small Craft Advisory, until 11 AM PDT this 
  morning.

* IMPACTS...Very steep and hazardous seas could capsize or cause 
  damage to vessels.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Recreational boaters should remain in port. Commercial vessels
should prepare for rough seas and consider remaining in port
until hazardous seas subside.

&&

$$

PZZ455-150200-
/O.CON.KEKA.SC.Y.0083.250715T0000Z-250715T1800Z/
Cape Mendocino to Pt Arena out 10 nm-
1046 AM PDT Mon Jul 14 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 11 AM PDT TUESDAY...

* WHAT...Northwest winds 10 to 20 kt with gusts up to 35 kt and 
  seas 6 to 11 feet expected.

* WHERE...Cape Mendocino to Pt Arena out 10 nm.

* WHEN...From 5 PM this afternoon to 11 AM PDT Tuesday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
1210 AM PDT Sun Jul 13 2025

.SYNOPSIS...Hot weather is forecast to continue for the interior
into early next week. HeatRisk diminishes by the middle of the week.
Unhealthy air quality due to nearby wildfires is possible. There is
a slight chance for isolated dry thunderstorms this afternoon and
evening over the mountains of northern Trinity County.

&&

.DISCUSSION...Hot weather continues in the interior, with high
temperatures between 100 and 110 likely. The highest temperatures
are likely along the Trinity and Klamath Rivers in Trinity and
Humboldt Counties. Slightly lower temperatures are found in
Mendocino as marine influence increases humidities and lowers
temperatures. This heat does bring Moderate to Major HeatRisk and is
dangerous to those without proper cooling and those sensitive to
heat related illness.

Smoke and haze models are showing higher smoke concentrations in the
valleys this morning before improving in the afternoon. Greater
instability today may help more haze to mix out and better air
qualities except immediately downwind from the fires. Models are
showing a moisture intrusion coming from the east. Moisture combined
with elevated instability may also bring a slight chance (10-15%)
for an isolated thunderstorm to northern Trinity County. Model
soundings do show a weak capping inversion and moisture remains
limited, so confidence remains low. There is a similar setup Monday
and Tuesday, but confidence is even lower (5-10% chance for an
isolated thunderstorm).

The ridge begins to move eastward Tuesday and Wednesday, allowing
for the marine layer to deepen and some relief to the hottest
temperatures. Temperatures are likely to remain warm, especially in
Trinity County, with mid to high 90s, but the consistent triple
digits are likely to end. JB

&&

.AVIATION...Shallow coastal stratus has developed along the
Humboldt and Mendocino coasts bringing IFR to LIFR ceilings to
coastal terminals. A southerly wind reversal has developed adjacent
to the coast as the strongest northerly winds move offshore early
Sunday morning. Southerly winds 5 to 10 knots will advect IFR
ceilings into CEC early Sunday morning. Both coastal terminals are
expected to see reduced visibilities with mist/fog through sunrise.
Model soundings show the marine layer reluctant to scatter out on
Sunday.

&&

.MARINE...The tight coastal pressure gradient will continue
to ease into Sunday. Gale gusts will retreat into extreme NW PZZ470
through Sunday, but steep and hazardous wind driven seas 9 to 14
feet will continue. Winds and seas will still remain elevated in the
southern outer waters with moderate to fresh breezes and waves 7 to
9 feet. Conditions will diminish in the inner waters on Sunday as
the strongest winds idle further offshore. Gales are expected to
ramp up again on Monday, expanding into the southern outer waters
and pushing closer to shore. Seas are expected to respond
accordingly with another round of 12 to 16 foot waves. There is
increasing confidence in high pressure beginning to break down by
Tuesday, diminishing hazardous conditions by midweek.

&&

.FIRE WEATHER...Building high pressure along with offshore flow has
brought warming and drying to the interior and near-coastal areas.
Afternoon RHs remain very dry, into the teens and 20s across most
the interior. High elevation areas (above 2000-2500 ft or so)
continue to see moderate to poor overnight RH recoveries. Lower
elevations are largely seeing moderate to good overnight recoveries.
Offshore winds in the higher terrain are forecast to remain breezy
overnight, especially in Del Norte county, though at least Monday
morning. Offshore flow begins to weaken slightly Monday night and
Tuesday morning, and more significantly by Tuesday night.

Upper-level moisture arrives from the east this afternoon into early
next week. Elevated instability along with some moisture brings a
slight chance (10-15%) for isolated dry thunderstorms to northern
Trinity County. As of now, moisture looks more limited on Monday,
but there is still a 5-10% chance for isolated dry thunderstorms.

The ridge begins to weaken Monday into early next week, which will
slowly deepen the marine layer into the middle of next week. RHs
will improve in the near-coastal areas with moderate to good
overnight recoveries possible in the highest terrain by the Tuesday
or Wednesday. JB

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
     Extreme Heat Warning until 11 PM PDT Monday for CAZ102-105-
     107-108.

     Heat Advisory until 11 PM PDT Monday for CAZ106.

     Heat Advisory until 11 PM PDT this evening for CAZ110-111-
     113>115.

NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory until 5 AM PDT early this morning for
     PZZ450.

     Hazardous Seas Warning until 5 PM PDT this afternoon for
     PZZ470.

     Gale Warning from 11 PM this evening to 11 PM PDT Monday
     for PZZ470.

     Small Craft Advisory until 5 AM PDT Monday for PZZ475.

&&

NOTE: The full forecast discussion is now regularly issued between
10 am/pm and 1 pm/am. Additional updates will be issued as needed.

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