997 
WHUS76 KPQR 200504
MWWPQR

URGENT - MARINE WEATHER MESSAGE
National Weather Service Portland OR
904 PM PST Tue Dec 19 2017

PZZ210-201315-
/O.EXT.KPQR.RB.Y.0183.000000T0000Z-171221T0600Z/
Columbia River Bar-
904 PM PST Tue Dec 19 2017

...SMALL CRAFT ADVISORY FOR ROUGH BAR NOW IN EFFECT UNTIL 10 PM
PST WEDNESDAY...

* IN THE MAIN CHANNEL...

* General seas...11 to 13 ft late through Wednesday

* FIRST EBB...Around 6 AM Wednesday. Seas building to near 15 ft
  with breakers possible. 

* SECOND EBB...Strong ebb around 545 PM Wednesday. Seas building
  to near 15 ft with breakers likely.

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.

&&

$$

PZZ250-255-270-275-201315-
/O.CON.KPQR.SI.Y.0140.000000T0000Z-171220T1800Z/
/O.CON.KPQR.SW.Y.0084.000000T0000Z-171221T1200Z/
Coastal waters from Cape Shoalwater WA to Cascade Head OR out
10 NM-Coastal waters from Cascade Head to Florence OR out 10 NM-
Waters from Cape Shoalwater WA to Cascade Head OR from 10 to
60 NM-Waters from Cascade Head to Florence OR from 10 to 60 NM-
904 PM PST Tue Dec 19 2017

...SMALL CRAFT ADVISORY FOR WINDS REMAINS IN EFFECT UNTIL 10 AM
PST WEDNESDAY...
...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS REMAINS IN EFFECT
UNTIL 4 AM PST THURSDAY...

* WINDS...West 20 to 25 kt with gusts to 30 kt, veering to Northwest
  15 to 20 kt with gusts to 25 kt after midnight.
  

* SEAS...12 to 14 ft, except 14 to 16 ft for several hours late 
  tonight through Wednesday morning. Seas highest beyond 40 nm. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Small Craft Advisory for wind means that wind speeds of 21 to
33 knots are expected. Inexperienced mariners...especially those
operating smaller vessels should avoid navigating in these
conditions.

A Small Craft Advisory for hazardous seas means that waves are
expected to be hazardous to small craft. Mariners should avoid
shoaling areas. Long period swell can sharpen into large breaking
waves in shoaling areas. It is not unusual for waves to break
much farther from shoaling areas than is normally experienced.
Remember...breaking waves can easily capsize even larger vessels.

&&

$$


http://www.weather.gov/portland