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New: Now available in Elibra E-Book form.  (Please note:  the Elibra E-Book is not compatible with Mac systems.) Keep this valuable reference  resource on your computer for easy access.

 

An excellent resource for learning basic
weather concepts, the use of GRIB files
in weather forecasting, and efficient ways
to acquire weather on your boat at Sea.
This book is a must for anyone interested
in learning about weather and the use of
GRIB files in daily forecasting.

Order Now

     

 

 

 

How often are you surprised by the weather?

How often does the wind clock or back…increase or decrease when you weren’t expecting it?
How confidently can you pin-down the time of a frontal passage to within an hour or two?
How sure are you in the morning that you’ll sleep like a baby in the anchorage you plan for tonight?
How confident are you that you should travel 30 miles to the next anchorage today in more-favorable winds instead of waiting until tomorrow? If you’re surprised more than once or twice a month, the knowledge I share in this book can help.

Table of Contents

PART ONE: Understanding Basic Weather

Dynamics:
Causes of Weather page 4
It’s a matter of Scale 10
Global energy transfer 11
Cold Fronts 14
Cold Front Wind Shifts 15
Instability 16
Dew Point 19
Lapse Rate 22
Measures of Lapse Rate 24
HI 28
RIDGE 32
TROF 33
LO 35
Squalls 36
Tropical Systems and Hurricanes 37
Interesting Case Studies 39
Cloud Types 47
Weather-Related Topics 52

PART TWO: Forecast Products… how to get them and how to use them (organized by means of reception)

Intro to Products page 56
Interpretation 60
VHF – US Coastal Forecasts, NOAA voice text 61
VHF – Bahamas Forecasts 64
AM/FM Radio – Bahamas Met Office Forecasts 67
SSB Receiver – voice text 68
WeatherFax w/SSB Receiver, computer, software 75
SSB / Ham Transceiver for Interactive Voice Weather 79
Add an HF e-mail Modem 85 - 98

• ESP’s: (WinLink, SailMail, MarineNet, Cruise-E-Mail) 86-90
• Chris Parker’s e-mail Forecast 92
• BuoyWeather Forecasts 93
• Tropical Discussion from NOAA 97

Satellite & Cell Phones (Iridium, Globalstar InMarSat,
Cell phones, 802.11.b, etc.) 99-103

• Optimizing Satellite and Cell Phones 100

GOES Weather Satellite Receiver 103
GRIBs 106 - 113

• GRIB Data 107
• GRIB viewers (ViewFax, Xaxero’s WindPlot, MaxSea/NavCenter, Nobletec, RayTec, SailMath’s Deckman, Ocens/WeatherNet) 111-113

WeatherNet 114
A look into the Future 116
Appendix A – NOAA FTP details 117
Glossary 129

Foreword

I trust you will find this a very different book about weather than anything else currently published, and I hope you will find it useful enough to earn a place at your nav station right beside your charts and cruising guides, and that you will refer to it as frequently as you do them.

When I began writing this book, I intended to write a handy reference book which anyone could pick-up, turn to a given page, and read a thorough discussion of a weather topic of interest. As the book progressed, however, it became clear the various topics were just too inter-related and complex for a simple reference-type book to be of much use to most readers.

My advice is to slowly read this book from beginning to end; most topics are covered in just a page or two, and important topics are covered several times in increasing depth and detail as additional concepts become familiar.

Hopefully this book will answer most of the questions you have about weather in the Bahamas and South East US Coast, and how to get and interpret the best and most-relevant weather products, given the electronic equipment you have onboard. My goal is to take a fresh, simple, easy-to-understand, and at times very different approach...yet be thorough, detailed and accurate.

It’s also not a book just about weather…I explore many topics of keen interest to mariners (like how to pick a good anchorage for the weather, how to pick a good cut to pass through and when to cross the Gulf Stream) which weather-only books fail to address and which non-weather authorities have generally failed to cover in the manner I do. The scope of this book is, however, limited by design. This is a basic book about marine weather applicable to the Bahamas and Southeast US Coast. It’s also covers some advanced topics and contains unique, up-to-date reference guides to the various weather analysis and forecast products (and exactly how to access them) available from numerous sources applicable to this geographical area. While most of what I write is scientifically accurate, I have taken occasional liberties in an effort to simplify discussions and enhance understanding of complex topics. For additional information, I recommend browsing various educational Web sites for topics of interest to you. From reading this book, you will have a good understanding of the basics, so I’d jump right into educational Web sites from NOAA and various Universities. You might start at: http://www.education.noaa.gov/cweather.html and explore from there.

Finally, this is a First Edition of this book and I’m a novice author. By purchasing this work, you will have a valuable tool at your disposal and you will make work on an expanded, updated and even better Second Edition possible. As such, anyone possessing a First Edition will receive a special discount on periodic Updates as well as on the Second Edition, when it becomes available. I deeply appreciate any clarifications, corrections or constructive criticisms you

About the Author

Chris Parker, his partner Michael Zidziunas and Wizard the cat have lived aboard for 12 years and been full-time cruising for 5 years, spending each winter in the Bahamas, first on their 1965 Cheoy Lee 30, now on their 1966 Morgan 34 Bel Ami. Chris has been fascinated with weather from childhood, and actively forecast weather each day starting in 3rd grade. In high school he broadcast widely-listened to forecasts on WBSL, an FM radio station in Western Massachusetts, then studied meteorology for 2 years in college. He’s also a hanglider pilot, where his life depends on keen observation of weather. But much of what he’s learned has been on the water. How Weather Influences our Cruising For most of us the weather has a major impact on our enjoyment of the day. Most sailors enjoy nice easy reaches, while power boaters prefer flat calm or wind on the bow or maybe stern. Almost everyone I know prefers sheltered, comfortable anchorages. We learned what’s possibly the most important lesson for cruisers 4 years ago:
 

We went cruising with a plan…most of us are paid good money in Corporate America to “plan your work and work your plan.” That means we go from point A to point B today. The Plan looks fine on the chart, and it seems to make sense when we plan our trip…but it doesn’t take into account the 20-knot head winds out there today.
Why not wait 2 days for an easy reach, if you’re confident in the forecast? And when you do go, and the wind is a bit stronger than you like, why not be flexible enough to stop at an alternate anchorage and have a nice evening rather than getting beaten-up? Flexibility and confidence in the weather are key. We’re always ready to change plans…sometimes radically…when conditions change. That, more than anything else, has been the key to our enjoying cruising on our little boat.

 

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