Alert archive / Washington / Small Craft Advisories in 2021

Small Craft Advisory 62, NWS Seattle, WA

March 17, 2021

NWS Seattle, WA issued this small craft advisory at Mar 17, 2021, 8:50 PM PDT. It took effect at Mar 18, 2021, 2:00 AM PDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Mar 17, 2021, 8:50 PM PDT (03:50 UTC)
In effect from
Mar 18, 2021, 2:00 AM PDT
Expired
Mar 18, 2021, 11:00 AM PDT
In force
9 hr
Issued by
NWS Seattle, WA

The text

As transmitted.

201 
WHUS76 KSEW 180350
MWWSEW

URGENT - MARINE WEATHER MESSAGE
National Weather Service Seattle WA
850 PM PDT Wed Mar 17 2021

PZZ150-153-156-181200-
/O.CAN.KSEW.SC.Y.0061.000000T0000Z-210319T0600Z/
/O.NEW.KSEW.SC.Y.0062.210318T1300Z-210318T2100Z/
/O.EXT.KSEW.GL.A.0022.210318T2100Z-210320T0100Z/
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-
850 PM PDT Wed Mar 17 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 2 PM PDT
THURSDAY...
...GALE WATCH NOW IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, southeast winds 20 to 30 kt
  and seas 6 to 11 ft at 10 seconds. For the Gale Watch, southeast
  winds 25 to 35 kt and seas 11 to 14 ft at 11 seconds possible.

* WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater 
  out to 10 nm.

* WHEN...For the Small Craft Advisory, from 6 AM to 2 PM PDT 
  Thursday. For the Gale Watch, from Thursday afternoon through 
  Friday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

PZZ170-173-176-181200-
/O.CAN.KSEW.SC.Y.0061.000000T0000Z-210318T1200Z/
/O.NEW.KSEW.SC.Y.0062.210318T0900Z-210318T2100Z/
/O.EXT.KSEW.GL.A.0022.210318T2100Z-210320T0100Z/
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm-
850 PM PDT Wed Mar 17 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM TO 2 PM PDT
THURSDAY...
...GALE WATCH NOW IN EFFECT FROM THURSDAY AFTERNOON THROUGH
FRIDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, southeast winds 20 to 30 kt
  and seas 8 to 13 ft at 11 seconds. For the Gale Watch, south
  winds 25 to 35 kt and seas 14 to 17 ft at 10 seconds possible.

* WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater 
  10 to 60 nm.

* WHEN...For the Small Craft Advisory, from 2 AM to 2 PM PDT 
  Thursday. For the Gale Watch, from Thursday afternoon through 
  Friday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

PZZ130-181200-
/O.CAN.KSEW.SC.Y.0061.000000T0000Z-210319T0600Z/
/O.NEW.KSEW.SC.Y.0063.210319T0100Z-210320T0100Z/
West Entrance U.S. Waters Strait Of Juan De Fuca-
850 PM PDT Wed Mar 17 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THURSDAY TO 6 PM PDT
FRIDAY...

* WHAT...East winds 15 to 25 kt and seas 9 to 13 ft at 13 
  seconds.

* WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca.

* WHEN...From 6 PM Thursday to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ134-181200-
/O.EXB.KSEW.SC.Y.0061.210319T0100Z-210320T0100Z/
Admiralty Inlet-
850 PM PDT Wed Mar 17 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THURSDAY TO 6 PM PDT
FRIDAY...

* WHAT...Southeast winds 20 to 30 kt.

* WHERE...Admiralty Inlet.

* WHEN...From 6 PM Thursday to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ135-181200-
/O.EXB.KSEW.SC.Y.0061.210319T0700Z-210320T0100Z/
Puget Sound and Hood Canal-
850 PM PDT Wed Mar 17 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT THURSDAY NIGHT TO
6 PM PDT FRIDAY...

* WHAT...South winds 15 to 25 kt.

* WHERE...Puget Sound and Hood Canal.

* WHEN...From midnight Thursday night to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ110-181200-
/O.EXT.KSEW.SC.Y.0061.210319T0100Z-210319T2100Z/
Grays Harbor Bar-
850 PM PDT Wed Mar 17 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 6 PM THURSDAY TO 2 PM
PDT FRIDAY...

* WHAT...Combined seas 4 to 6 ft building to 7 to 9 ft Thursday 
  afternoon, 11 to 13 ft Thursday night and 14 to 16 ft Friday. 
  Bar conditions light becoming moderate Thursday afternoon, 
  rough Thursday night and severe Friday. Maximum ebb currents 
  will occur around 815 AM and 830 PM Thursday. 

* WHERE...Grays Harbor Bar.

* WHEN...From 6 PM Thursday to 2 PM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft 
  especially when navigating in or near harbor entrances.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory for rough bar means that wave conditions
are expected to be hazardous to small craft in or near harbor
entrances. 

&&

$$

PZZ132-133-181200-
/O.CON.KSEW.SC.Y.0061.210318T1800Z-210319T1200Z/
/O.EXB.KSEW.GL.A.0022.210319T1300Z-210320T0100Z/
East Entrance U.S. Waters Strait Of Juan De Fuca-
Northern Inland Waters Including The San Juan Islands-
850 PM PDT Wed Mar 17 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM THURSDAY TO
5 AM PDT FRIDAY...
...GALE WATCH IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
AFTERNOON...

* WHAT...For the Small Craft Advisory, southeast winds 20 to 30
  kt. For the Gale Watch, southeast winds 25 to 35 kt possible.

* WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca and 
  Northern Inland Waters Including The San Juan Islands.

* WHEN...For the Small Craft Advisory, from 11 AM Thursday to 5 
  AM PDT Friday. For the Gale Watch, from Friday morning through 
  Friday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/seattle
2 follow-up statements
712 
WHUS76 KSEW 180957
MWWSEW

URGENT - MARINE WEATHER MESSAGE
National Weather Service Seattle WA
257 AM PDT Thu Mar 18 2021

PZZ150-153-156-181800-
/O.EXT.KSEW.SC.Y.0062.210318T0957Z-210318T1800Z/
/O.UPG.KSEW.GL.A.0022.210318T2100Z-210320T0100Z/
/O.NEW.KSEW.GL.W.0026.210318T1800Z-210320T0100Z/
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-
257 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
...GALE WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM PDT
FRIDAY...

* WHAT...For the Small Craft Advisory, southeast winds 15 to 25
  kt. For the Gale Warning, south winds 25 to 35 kt. Seas 13 to 
  18 ft at 13 seconds. 

* WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater 
  out to 10 nm.

* WHEN...For the Small Craft Advisory, until 11 AM PDT this
  morning. For the Gale Warning, from 11 AM this morning to 6 PM 
  PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

PZZ170-173-176-181800-
/O.EXT.KSEW.SC.Y.0062.000000T0000Z-210318T1800Z/
/O.UPG.KSEW.GL.A.0022.210318T2100Z-210320T0100Z/
/O.NEW.KSEW.GL.W.0026.210318T1800Z-210320T0100Z/
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm-
257 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
...GALE WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM PDT
FRIDAY...

* WHAT...For the Small Craft Advisory, southeast winds 25 to 35 kt
  and seas near 10 ft at 11 seconds building to 14 to 19 ft at 12
  seconds. For the Gale Warning, south winds 25 to 35 kt. 

* WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater 
  10 to 60 nm.

* WHEN...For the Small Craft Advisory, until 11 AM PDT this 
  morning. For the Gale Warning, from 11 AM this morning to 6 PM 
  PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

PZZ131-181800-
/O.EXB.KSEW.SC.Y.0061.210319T0300Z-210320T0100Z/
Central U.S. Waters Strait Of Juan De Fuca-
257 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 6 PM
PDT FRIDAY...

* WHAT...East winds 20 to 30 kt.

* WHERE...Central U. S. Waters Strait Of Juan De Fuca.

* WHEN...From 8 PM this evening to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ132-133-181800-
/O.EXT.KSEW.SC.Y.0061.210318T1800Z-210319T0900Z/
/O.EXT.KSEW.GL.A.0022.210319T0900Z-210320T0100Z/
East Entrance U.S. Waters Strait Of Juan De Fuca-
Northern Inland Waters Including The San Juan Islands-
257 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 11 AM THIS MORNING TO
2 AM PDT FRIDAY...
...GALE WATCH NOW IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
AFTERNOON...

* WHAT...For the Small Craft Advisory, southeast winds 20 to 30 
  kt. For the Gale Watch, southeast winds 25 to 35 kt possible.

* WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca and 
  Northern Inland Waters Including The San Juan Islands.

* WHEN...For the Small Craft Advisory, from 11 AM this morning 
  to 2 AM PDT Friday. For the Gale Watch, from late tonight 
  through Friday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

PZZ134-181800-
/O.EXT.KSEW.SC.Y.0061.210319T0700Z-210320T0100Z/
Admiralty Inlet-
257 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM PDT FRIDAY...

* WHAT...Southeast winds 15 to 25 kt.

* WHERE...Admiralty Inlet.

* WHEN...From midnight tonight to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ130-181800-
/O.CON.KSEW.SC.Y.0063.210319T0100Z-210320T0100Z/
West Entrance U.S. Waters Strait Of Juan De Fuca-
257 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM PDT FRIDAY...

* WHAT...East to southeast winds 15 to 25 kt and seas 10 to 13 ft
  at 12 seconds.

* WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca.

* WHEN...From 6 PM this evening to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ110-181800-
/O.CON.KSEW.SC.Y.0061.210319T0100Z-210319T2100Z/
Grays Harbor Bar-
257 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 2 PM PDT FRIDAY...

* WHAT...Combined seas 4 to 6 ft building to 7 to 9 ft Thursday
  afternoon, 11 to 13 ft Thursday night and 14 to 16 ft Friday.
  Bar conditions light becoming moderate Thursday afternoon, rough
  Thursday night and severe Friday. Maximum ebb currents will
  occur around 815 AM and 830 PM Thursday.

* WHERE...Grays Harbor Bar.

* WHEN...From 6 PM this evening to 2 PM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft 
  especially when navigating in or near harbor entrances.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory for rough bar means that wave conditions
are expected to be hazardous to small craft in or near harbor
entrances. 

&&

$$

PZZ135-181800-
/O.CON.KSEW.SC.Y.0061.210319T0700Z-210320T0100Z/
Puget Sound and Hood Canal-
257 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM PDT FRIDAY...

* WHAT...South winds 15 to 25 kt.

* WHERE...Puget Sound and Hood Canal.

* WHEN...From midnight tonight to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/seattle
589 
WHUS76 KSEW 181556
MWWSEW

URGENT - MARINE WEATHER MESSAGE
National Weather Service Seattle WA
856 AM PDT Thu Mar 18 2021

PZZ150-153-156-190000-
/O.CON.KSEW.SC.Y.0062.000000T0000Z-210318T1800Z/
/O.CON.KSEW.GL.W.0026.210318T1800Z-210320T0100Z/
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-
856 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
...GALE WARNING REMAINS IN EFFECT UNTIL 6 PM PDT FRIDAY...

* WHAT...For the Small Craft Advisory, southeast winds 15 to 25
  kt. For the Gale Warning, south winds 25 to 35 kt. Seas 13 to 
  18 ft at 13 seconds.

* WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater 
  out to 10 nm.

* WHEN...For the Small Craft Advisory, until 11 AM PDT this 
  morning. For the Gale Warning, from 11 AM this morning to 6 PM 
  PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

PZZ170-173-176-190000-
/O.CON.KSEW.SC.Y.0062.000000T0000Z-210318T1800Z/
/O.CON.KSEW.GL.W.0026.210318T1800Z-210320T0100Z/
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To
60 Nm-
856 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS
MORNING...
...GALE WARNING REMAINS IN EFFECT UNTIL 6 PM PDT FRIDAY...

* WHAT...For the Small Craft Advisory, southeast winds 15 to 25
  kt. For the Gale Warning, south winds 25 to 35 kt and seas near
  10 ft at 11 seconds building to 14 to 19 ft at 12 seconds. 

* WHERE...Coastal Waters from Cape Flattery to Cape Shoalwater 
  10 to 60 nm.

* WHEN...For the Small Craft Advisory, until 11 AM PDT this 
  morning. For the Gale Warning, from 11 AM this morning to 6 PM 
  PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Warning means winds of 34 to 47 knots are imminent or
occurring. Operating a vessel in gale conditions requires
experience and properly equipped vessels. It is highly
recommended that mariners without the proper experience seek safe
harbor prior to the onset of gale conditions.

&&

$$

PZZ132-133-190000-
/O.CON.KSEW.SC.Y.0061.210318T1800Z-210319T0900Z/
/O.CON.KSEW.GL.A.0022.210319T0900Z-210320T0100Z/
East Entrance U.S. Waters Strait Of Juan De Fuca-
Northern Inland Waters Including The San Juan Islands-
856 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM PDT FRIDAY...
...GALE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
AFTERNOON...

* WHAT...For the Small Craft Advisory, southeast winds 20 to 30 
  kt. For the Gale Watch, southeast winds 25 to 35 kt possible.

* WHERE...East Entrance U. S. Waters Strait Of Juan De Fuca and 
  Northern Inland Waters Including The San Juan Islands.

* WHEN...For the Small Craft Advisory, from 11 AM this morning 
  to 2 AM PDT Friday. For the Gale Watch, from late tonight 
  through Friday afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Gale Watch is issued when the risk of gale force winds of 34 to
47 knots has significantly increased, but the specific timing
and/or location is still uncertain. It is intended to provide
additional lead time for mariners who may wish to consider
altering their plans.

&&

$$

PZZ130-190000-
/O.CON.KSEW.SC.Y.0063.210319T0100Z-210320T0100Z/
West Entrance U.S. Waters Strait Of Juan De Fuca-
856 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 6 PM PDT FRIDAY...

* WHAT...East to southeast winds 15 to 25 kt and seas 10 to 13 
  ft at 12 seconds.

* WHERE...West Entrance U. S. Waters Strait Of Juan De Fuca.

* WHEN...From 6 PM this evening to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ110-190000-
/O.CON.KSEW.SC.Y.0061.210319T0100Z-210319T2100Z/
Grays Harbor Bar-
856 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 2 PM PDT FRIDAY...

* WHAT...Combined seas 7 to 9 ft today, 11 to 13 ft tonight and 14
  to 16 ft on Friday. Bar conditions moderate becoming rough
  tonight and severe on Friday. Maximum ebb currents will occur
  around 830 PM Thursday and 845 AM Friday.

* WHERE...Grays Harbor Bar.

* WHEN...From 6 PM this evening to 2 PM PDT Friday.

* IMPACTS...Conditions will be hazardous to small craft 
  especially when navigating in or near harbor entrances.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory for rough bar means that wave conditions
are expected to be hazardous to small craft in or near harbor
entrances.

&&

$$

PZZ134-190000-
/O.CON.KSEW.SC.Y.0061.210319T0700Z-210320T0100Z/
Admiralty Inlet-
856 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM PDT FRIDAY...

* WHAT...Southeast winds 15 to 25 kt.

* WHERE...Admiralty Inlet.

* WHEN...From midnight tonight to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ135-190000-
/O.CON.KSEW.SC.Y.0061.210319T0700Z-210320T0100Z/
Puget Sound and Hood Canal-
856 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM PDT FRIDAY...

* WHAT...South winds 15 to 25 kt.

* WHERE...Puget Sound and Hood Canal.

* WHEN...From midnight tonight to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

PZZ131-190000-
/O.CON.KSEW.SC.Y.0061.210319T0300Z-210320T0100Z/
Central U.S. Waters Strait Of Juan De Fuca-
856 AM PDT Thu Mar 18 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 6 PM PDT FRIDAY...

* WHAT...East winds 20 to 30 kt.

* WHERE...Central U. S. Waters Strait Of Juan De Fuca.

* WHEN...From 8 PM this evening to 6 PM PDT Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory means that wind speeds of 21 to 33 knots
and/or seas 10 feet or higher are expected to produce hazardous
wave conditions to small craft. Inexperienced mariners,
especially those operating smaller vessels should avoid
navigating in these conditions.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/seattle

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Seattle, WA wrote its last area forecast discussion before this small craft advisory went out at Mar 17, 3:01 PM PDT, 5 hours 49 minutes earlier.

Area forecast discussion, Mar 17, 3:01 PM PDT, 5 hours 49 minutes before
Area Forecast Discussion
National Weather Service Seattle WA
301 PM PDT Wed Mar 17 2021

.SYNOPSIS...Dry weather today as an upper ridge slides east of the
area. A series of weather systems will move through the area
Thursday through the weekend for rounds of rain and mountain snow.
Breezy winds on Friday with the trough over the area.

&&

.SHORT TERM /TONIGHT THROUGH SATURDAY/...High clouds with some
breaks present over W WA this afternoon as temperatures are
generally in the mid-50s. Dry conditions persist as the area remains
on the back side of an exiting ridge.

Next weather system of concern remains a front ahead of an upper
level trough which will start to impact the area Thursday as the
front hits the coast then spreads inland during the afternoon. Rain
and breezy conditions the primary concern with the front, however as
the trough makes its way into the state Friday, looking for winds to
pick up a little bit more with breezy to windy conditions over the
CWA. The usually preferred areas for winds /the coast and North
interior/ look to be borderline with regards to potential for
headlines but at this time, current solutions do not really make
much of a strong case for such wind speeds and as such will go with
inherited forecast keeping them just below advisory thresholds. The
more interesting aspect to key in on for Friday will be an influx of
instability. SPC convective outlook places the entire state of WA in
a general threat for thunderstorms, but this is potentially overdone
given most recent model guidance as neither CAPE nor LI values look
terribly convincing. That being said, did inherit slight chance T
along the coast and over the coastal waters and given that will be
where the best instability will be present /although still not
terribly impressive/...feel like the best play is to leave inherited
forecast alone in this regard as it does match with forecast
expectations...a slight, non-zero but still pretty low, chance.

The trough finally makes its exit during the day Saturday with some
showers lingering over W WA. Activity looks to diminish throughout
the day, but sufficient moisture lingers to keep PoPs in the
forecast.  18

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...Next frontal system wastes
no time getting into W WA for Sunday bringing another round of
precip and the accompanying upper trough will allow precip to
stretch into Monday. Deterministic models show an upper level ridge
moving into the area Tuesday although there is some disagreement as
to whether or not this feature will be able to scour out lingering
moisture...the ECMWF votes yes, the GFS not so much. Ensembles
leaning more dry than wet, but still retain slight chance to low end
chance PoPs for this time frame. Yet another frontal system expected
for Wednesday, but enough disagreement in the details to keep
confidence and PoPs low.  18

&&

.AVIATION...Clouds are continuing to move into the Western
Washington area today, and we are expecting a gradual lowering of
ceilings. At this moment it looks like conditions will remain in VFR
for the next 36 hours. Southerly flow aloft is expected to remain in
place for the next few days as well. Looking at the surface wind
conditions as of 2000 UTC it is mostly calm throughout the area,
however it is expected that winds will be picking up slightly during
the overnight hours, with this ramp up their may be some variability
in the direction. But we expect by Thursday morning for the area
terminals to be settled in a southerly flow pattern at 7-10 knots.
Locations such as KBLI, KPAE, KPWT, and KHQM will likely see
slightly higher sustained winds averaging between 10 and 15 knots
with gusts possible. Rain will also be moving into the area during
the late morning/early afternoon. As is usually the case the rain
will begin near the coastal terminals such as KHQM before moving
inland. Right towards the end of the aviation forecast period we
begin to see an increase chance of thunderstorms. These storms will
be scattered in nature, but the most likely location for occurrence
will be near the coast.

KSEA...Clouds will continue to move in throughout the afternoon and
into tonight. Conditions are expected to remain in VFR. Winds will
gradually be increasing during the overnight, during the initial
increase direction could be variable. We expect by 1500 UTC winds
will be consistently from the south/southeast. Chance of light rain
increases towards the end of the period.

Butwin

&&

.MARINE...The area of high pressure that has been keeping the area
waters relatively tranquil will be pushed out tonight. Southerly
winds are expected to begin to increase during the overnight,
especially over the coastal waters. Winds over the coastal waters
will initially pick up to small craft advisory level, but the outer
coastal waters are expected to increase to gale strength by the
early morning hours. During this time west/southwest swells will be
increasing to around 10 feet. With the low staying situated off
shore we expect a secondary push of both winds and swells on Friday.
This second push of energy is expected to be stronger with gale
force winds for the outer and inner coastal waters. Swells will also
be increasing to around 15 feet. The period during both the initial
and secondary pushes will stay between 10 and 12 seconds.

The situation for in inland waters is a little bit more complicated.
While the most recent model runs have made the winds from the
initial surge of energy come down over the coastal waters, winds
over the East Entrance and Northern Interior have remained roughly
the same. We are confident that at small craft level winds will
occur in these two areas Thursday morning, but the potential for
gales is still there. Because the models have been trending it down
we will hold off on any upgrades for the interior water headlines.
With that second push of energy on Friday it is likely that all the
interior waters have some kind of headline. As of this afternoon's
forecast run it is looking like gales are likely for the East
Entrance and the Northern Interior Waters, with small crafts
elsewhere.

Conditions for all the area waters are expected to gradually ease
over the weekend.

Butwin

&&

.HYDROLOGY...The incoming Thursday/Friday rains look to make for
significant rises on the Skokomish River, however, river levels
are expected to remain below flood stage. Will adjust the forecast
should those prospects change, but at this time guidance remains
consistent. For the remainder of the area, river flooding is not
expected over the next 7 days. 18

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...Gale Watch from late tonight through Friday afternoon for
     Coastal Waters From Cape Flattery To James Island 10 To 60
     Nm-Coastal Waters From James Island To Point Grenville 10
     To 60 Nm-Coastal Waters From Point Grenville To Cape
     Shoalwater 10 To 60 Nm.

     Small Craft Advisory from 8 PM this evening to 5 AM PDT Thursday
     for Coastal Waters From Cape Flattery To James Island 10 To
     60 Nm-Coastal Waters From James Island To Point Grenville
     10 To 60 Nm-Coastal Waters From Point Grenville To Cape
     Shoalwater 10 To 60 Nm.

     Small Craft Advisory from 11 AM Thursday to 2 PM PDT Friday for
     Grays Harbor Bar.

     Gale Watch from Thursday evening through Friday afternoon for
     Coastal Waters From Cape Flattery To James Island Out 10 Nm-
     Coastal Waters From James Island To Point Grenville Out 10
     Nm-Coastal Waters From Point Grenville To Cape Shoalwater
     Out 10 Nm.

     Small Craft Advisory from 8 PM this evening to 11 PM PDT
     Thursday for Coastal Waters From Cape Flattery To James
     Island Out 10 Nm-Coastal Waters From James Island To Point
     Grenville Out 10 Nm-Coastal Waters From Point Grenville To
     Cape Shoalwater Out 10 Nm-West Entrance U.S. Waters Strait
     Of Juan De Fuca.

     Small Craft Advisory from 11 AM Thursday to 5 AM PDT Friday for
     East Entrance U.S. Waters Strait Of Juan De Fuca-Northern
     Inland Waters Including The San Juan Islands.

&&

www.weather.gov/seattle

The office that day

Everything else NWS Seattle, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 17, 8:50 PM PDTSmall Craft AdvisorySEW4 days
Mar 18, 2:57 AM PDTGale WarningSEW48 hr

Nearby

Small Craft Advisories in Washington, 2021Every small craft advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.