Pacific Sail & Power Boat Show

Pacific Sail & Power Boat Show is one of the West Coast's premier shows, featuring new sail and cruising power boats, gear, hardware, seminars, and interactive workshops.

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Introduction to Surface Pressure Concepts and Charts

Date: Thursday, April 19, 2018

Time: 11:45am - 12:45pm

Location: Craneway Seminar Pavilion

Cost: Free

Speaker: Lee Chesneau

***This 55-minute free seminar begins with an important discussion of the marine oriented strong wind & small craft advisories, watches, & warnings system used by the Environment Canada & the U.S. National Weather Service’s (NWS) Ocean Prediction Center (OPC), National Hurricane Center (NHC) Tropical Analysis & Forecast Branch (TAFB), & the Honolulu Forecast Office (NWSFO HNL) marine program.


  • There will be a detailed discussion of the universal station plot of surface weather observations from ships at sea, fixed moored buoys, & land stations that report sea level pressure, winds, & present weather conditions, the bases for the OPC’s Surface Analyses Pressure charts.
  • There will also be an overview of the key synoptic scale surface pressure weather system’s symbols (e.g. low & high pressure) & their associated features (e.g., fronts, troughs & ridges, & squall lines, just to name a few), challenging boaters as to what they know versus what they not know about them.

***Attendees are strongly encouraged to enroll in the paid 3-hour “The Surface Pressure Chart Workshop” that follows, scheduled from 1:00 to 4:00 PM which will go into more in-depth detail on the variety of Surface Pressure Analyses & Forecast Charts & the specific weather conditions a boater can expect (e.g., clouds, precipitation, pressure & wind changes), along with Lee Chesneau’s hierarchy for marine weather prediction, vessel routing & decision making. See boat show schedule for further details.

Seminar Speaker

Lee Chesneau

Lee Chesneau is highly experienced senior marine meteorologist & graduate from one of the elite universities that offer degrees in meteorology, the University of Wisconsin (Madison). His Bachelor of Science (B.S) Degree in Meteorology was Lee’s ticket to a distinguished & extensive career with NOAA’s National Weather Service (NWS) & Satellite Service (NESDIS).  Lee also….

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