21/2/2015 Whether it’s the Weather
After spending a week at American
River on Kangaroo Island it was time to start thinking about the next leg of
our sailing adventures aboard Easy Tiger. Deciding whether it was the right
weather to go was a critical decision.
Picking the right weather for each stage has been the most important part
of our sailing around Australia adventure. Mostly
we get it right which means that conditions are in our favour and we have a comfortable, safe ride. But, sometimes
we get it wrong and that spoils everyone’s day.
To find the weather forecast that is the most accurate and localized for the area we want to sail in can be overwhelming. There are dozens of weather forecasting web sites including Willy weather, Seabreeze, Bouy weather, Accuweather and even one called "Skippysky", to name a few.
To be better at picking the
weather we have made a list of the forecast conditions that we are prepared set sail in.
First on
the list is that the forecast predicts no more than 20 knots of wind. As it says on the weather
bureau's (BOM) site, wind can be up to 40 percent stronger than the average forecast.
That means that 20 knots could easily be gusts of 28knots or more. Winds that strong
could make it a wild ride.
The next piece of our criteria is
that we want no wind in the direction we are headed. So if we want to go
southeast and the forecast mentions winds from the south east, we stay put.
Seas and swell are the next
parameter. 3 metres is enough to cope with. Again, the BOM site says that
as their forecast is an average, actual swell heights could also be 40%
higher than forecast. That means a 3metre forecast could easily be 5 metre seas. That would raise the heart rate!
Our study of the weather starts with a quick look at the coastal waters forecast for both our departure point and our destination. We find this by
logging on the Bureau of Meteorology’s home page and using the clickable map. This gives a
basic weather forecast for a reasonably local area. The basic forecast will give wind, seas and swell conditions forecast for the next three days. It’s quick and easy to use. It is updated twice daily. We
simply compare it with our checklist, if our conditions aren’t met we have
another day to do other things.
If the local coastal waters forecast seem to meet our criteria for both our departure point and our
destination we will then “dig a bit further” by scrolling down on the BOM site
to “Meteye”.
Meteye gives both wind and swell
/ seas forecast for the local areas via another "click on" map. This can be time
forwarded in three hourly increments to give weather forecasts up to seven days
ahead for the nearest weather station to the planned route. If Meteye shows favourable conditions as well, we then log on to “Bouy Weather”.
The Bouy Weather website premium subscriber's version offers a seven day basic forecast from the closest weather station to the
point you click on. Unfortunately Bouy weather only reports for the morning and afternoon for each day. What you will see is a green flag
for ideal conditions, yellow flag for not such ideal conditions or red flags
for dangerous conditions. Each flag is accompanied by a short forecast giving
wind direction and speed.
For a more detailed cross
reference or double check, we will also log on to the Predict Wind site. We
started out subscribing to Predict Wind as they have a nifty satellite
communicator that allows us to get their weather forecasts anywhere any time.
Plus, their satellite communicator allows us to send basic emails anywhere
anytime.
The Predict Wind premium service has a weather router tool included, which allows one to type in parameters
such as boat performance in certain wind types (boat polar), the destination
and the preferred date and time of departure. The Predict Wind weather router will then display a plotted course with
three other alternative departure times and the various courses for you to
choose from. By clicking on any part of the plotted course on display, you can
see what the wind conditions are forecast to be at any point of that route, along with the swell and your predicted boat speed at that time.
For inexperienced sailors like
myself, becoming a student of the weather has been a real learning curve. Whether it is the right weather to be leaving
safe haven and tackling the next leg of our sailing adventure is without doubt the most
important decision we make on Easy Tiger.
At American River wiring for a lull in the south easterlies, so that we could go south east to Robe. |
Sailed past the Penneshaw hotel where we had a nice lunch a few days before |
Total glass out. Even the birds enjoyed the calm conditions, and the offcuts of tuna we fed them. |
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