Module 3.2 // Weather Mechanics & Interpretation of WX Forecasts
Here’s What We Cover:
EARTH’S ATMOSPHERIC SYSTEM: Comprehend the mixed-influence that each part of Earth’s Atmospheric System plays in global weather so you can understand the integrated use of multiple weather forecasts to interpret how “weather” impacts the Routes you’re planning and sailing. Learn the inter-dependence between: differential heating; single-cell circulation; Coriolis effect; prevailing winds; semi-permanent high / low atmospheric pressure; Hadley, Ferrel, and Polar cells; and Jet Streams.
WEATHER PHENOMENA — Understand the physical structure and development-cycle of 8 categories of weather phenomena that routinely affect the lives of sailors: 1) Wind Creation, 2) Frontal Weather, 3) High Atmospheric Pressure, 4) Low Atmospheric Pressure, 5) Cyclones, 6) Local Phenomena, 7) Sea Conditions, 8) Upper-Level Atmosphere Effects.
WEATHER REPORTS — Learn to use your awareness about the big picture of “weather and routing” to select the appropriate reports that affect the planning and piloting of your Routes; also learn how to interpret the nomenclature used on weather reports. Covered: Surface Analysis; Wind and Wave; Upper-Level: 500 Mb; Local Zone Forecasts; GRIB Data; Text & Radio — Synoptic and Local Reports.
SOURCES OF WEATHER DATA — Locate official sources of weather data for different parts of the world and learn the method to select an appropriate level of hierarchical data required for your passage. Covered: data formats and download methods; global forecasting community; regional management of cyclone info and tracking.
HOW TO INTERPRET WEATHER INFORMATION — Learn my Weather Interpretation Method and see how it’s used to review actual case study examples. Method: OBTAIN: Route, vicinity, duration, affected forecast; REVIEW: wind-angle & strength, major wind-shifts; INTERPRET: leveraging potential; dangerous conditions; estimated favorable wind supply.