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Modern Marine Weather,
3rd ed.


David Burch

ebook copies are available in various formats

Errata 3rd ed

Errata 2nd ed

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Squall lines Great Lakes , H.M.S. Eurydice
Example of custom weather resources
Section of Dove's Law of Storms on Practical Matters (mostly of historical interest)
To get to NGA pubs use:   If that does not work try:  This is only here because it had historically been hard to get to, but it seems better these days.  "msi" stands for marine safety information.
We have greatly expanded the coverage of ASCAT, but here are a couple earlier articles (information in the book is much updated): ASCAT—Wind at Sea see also
Our earlier information on Ocean Currents is at Note we were more optimistic about the value of these predictions when the second edtion was written than we are now. This is a work in progress.  The new book has a broader look at this subject and we will update the online articles as soon as possible.
Resources for Barometer Use in Marine Navigation
Check out our Barometer Calibration page
Starpath Ship Reports free ship reports delivered to your email from within 300 nmi of your location at sea, anywhere in the world (
We have a greatly expanded discussion of weather models in the new book. For a concise description of available data see the model explorer tab at
To study past examples of tropical storms and hurricanes looking at archived values of all related products: analysis, forecast, and tropical cyclone warning maps, NHC Advisories, and archived GFS files, see these several links: and (354 parameters for whole globe, ~ 60 MB) and  You can view the large GFS files in LuckGrib (Mac or iPad only) or Panoply (PC or Mac). We do not know of other viewers capable of showing these large files with so many parameters.  Note: the usual way to access just the parts of a GRIB file we want is called OPeNDAP, but it seems NOMADS no longer (≥ 2018) offers this format for archived model predictions, hence we are left with downloading one valid time per file for the whole globe, covering all 354 parameters. We hope to add some videos on the use of Panoply when we can... there is a learning curve, because the types of files we want to see and how we want to see them for marine applications is not the typical use of this amazing program.
Errata to second edition
Contact the Author
Read about our Online Marine Weather Course
We Our main source is the weather articles at Later we will focus here on ones referenced in the book. Below are just a few suggested ones, but see first the Marine Weather Check List and overview of Marine WEather.
We have added to the textbook discussion of weather by satphone in two articles in our nav blog: Nuts and Bolts of Sat Phone Usage and Weather by Sat Phone.  The book updates these.
Two new articles related to converting station pressure to sea level pressure: Point Four Four per Floor—QFE to QNH to QFF and Mean Sea Level, Tides, and Barometers
True Wind Revisited which are updated notes on computing True Wind from Apparent Wind when COG ≠ Heading... again, our treatment of accurate true wind computations is greatly expanded in the text.
Comparison of tropical storm statistics from 1977 to 2017
Notes on HF use in South Pacific and other places by MetBob Article 1 and follow up Article 2, also tells how to receive Bob's valuable weekly reports by email request to saildocs. Must have for SPAC sailing.
Effect of Leeway on Knotmeter Speed
See  (we will itemize these later)

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