From Cliff Mass:
A Bomb Cyclone Will Hit the Southern Oregon Coast
An explosively developing bomb-cyclone will hit the southern Oregon coast tomorrow, with hurricane-force wind gusts, towering waves, and lots of precipitation.
The term "meteorological bomb" is given to a midlatitude cyclone whose central pressure declines by more than 24 millibars (or 24 hPa) in 24 hours (there is a latitude dependence of the criterion, but this is close enough). This storm is going to blow that criterion away.
Virtually all the models agree on this extraordinary strengthening, so confidence it quite high. And there are some aspects of this storm that are very unusual. Let me show you the details.
The initial step in the development of the storm, a process called cyclogenesis, is occurring as I write this blog.
Much more at the site. Gale warning predicted for the island tomorrow evening. From weather.com:
Gale Watch for Northern Inland Waters Including The San Juan Islands
From 10:00pm PST, Tue Nov 26 until 10:00am PST, Thu Nov 28
Issued by: Seattle/Tacoma - WA, US, National Weather Service,
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... ...GALE WATCH REMAINS IN EFFECT FROM TUESDAY EVENING THROUGH THURSDAY MORNING... * WIND...NORTHWEST 15 TO 25 KNOTS NORTH OF THE SAN JUAN ISLANDS THIS EVENING. NORTHEAST WIND 25 TO 40 KNOTS POSSIBLE LATER TUESDAY NIGHT THROUGH THURSDAY MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT. INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS. 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. &&
Wonder which direction the wind will be coming out of. November is the time for these kinds of storms.
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