Bobgram

Bob Blog 26 May
Bob McDavitt's ideas for sailing around the South Pacific.
Disclaimer: Weather is a mix of pattern and chaos; these ideas are
from the patterned world.

Compiled Sunday 26 MAY 2024

FASTSEAS -> gpx file -> Navionics

Windy.com has become a popular source for viewing weather files.
Registered members are given the option to do "Distance and Planning"
via a right click in a browser.

FastSeas.com is a web-based subscription application which uses this
feature to produce an easy to use and configure weather router and
passage planning/viewing too. It will calculate the fastest route from
A to B using the GFS weather forecast and oceanic currents. You can
configure the performance of your vessel and your comfort thresholds.

FastSeas allows routing via email and short message satellite
communications such as Zoea, Spot and Bivy Stick devices.

FastSeas can produce a gpx file of the optimum route. This can then be
transferred to a chart plotter.
Here is a link to a YouTube explanation of how to use FastSeas and
import the path into a Navionics program running on an iPad (or any
tablet with GPS).

https://www.youtube.com/watch?v=jbCQStHYphY&t=340s

or directly into a RayMarine chart plotter

https://www.youtube.com/watch?v=rz06aQXmwcI&t=202s

And here is an interview with its inventor, Jeremy Waters

https://www.youtube.com/watch?v=EtMXnny-RMA

FastSeas Basic allows five route calculations per month at no charge,
or a full subscription for US$10 per month or US$45 per 6months or
US$60 per year.

TROPICS
Tropical Storm Ialy skirted the coast of Kenya and far southern
Somalia after forming in the Seychelles, unusually far north off
Africa for such a storm.

EWINAR is brewing in the Philippines and expected to take the coastal
route northeast to eats of Japan .
REMAL is expected to make landfall over Bangladesh

The active part of a MJO oscillation is moving into the Pacific over
the next few weeks.

WEATHER ZONES
The South Pacific Convergence zone is active in a long line from New
Guinea, across northern Vanuatu, Fiji,
Tonga and then to south of Southern Cooks. It is expected to drift
northwards and may be along 11S by next week.

HIGHS and LOWS

Aotearoa/NZ starts the week in a SW flow. A small low L1 in this flow
is expected to cross the North Island on Tuesday
and then travel northeast and deepen east of Gisborne on Wednesday
and then move off to the SE.

HIGH H1 over NSW tonight is expected to move into central Tasman by
Wednesday,
then travel east along 37S from New Zealand to south of Tonga by
Sunday.

SQUASH ZONE is expected between Thursday and Sunday/perhaps Monday 3
June on the north side of this High,
mainly between Fiji and Aitutaki, but also over Tonga. The squash zone
is aligned with the SPCZ for a few days. Avoid.

Panama to Marquesas:
Light winds for starters. Squally doldrums from Panama to 2N, intense
between 6N and 4N.

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If you would like more details about your voyage, then check
metbob.com to see what I offer.
Or Facebook at /www.facebook.com/metbobnz/
Weathergram with graphics is at metbob.wordpress.com
(subscribe/unsubscribe at bottom).
Weathergram archive (with translator) is at
weathergram.blogspot.co.nz.
Contact is bob@metbob.com or text 64277762212.
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