Originally Posted by Sailorman Ed
Thanks very much Curtis - looking forward to getting there. Any comments on going from central south Cuba to the San Blas? I think that is going to be our southbound route
and then work our way north.
Any idea what month?
Two significant factors will be contrary currents SW of Jamaica
and the area of larger seas caused by the Colombian low. This feature varies in intensity and area of coverage generally by time of year. It can spread West almost to Providencia. Early last year there were big seas (15') pounding into the San Blas. So when, and the conditions off Colombia
, will be a significant consideration.
Right now for example, this area extends to near Providencia/San Andreas with seas just over 2 meters from about 77d, 7s period. Not dangerously big but probably a bit uncomfortable. Better later in the year like April-May as the seasonal trades in the SW Carib start to settle down. Trick will be still getting good wind
in the SW Carib, but avoiding those Colombian seas.
Assuming a start of roughly somewhere N of Cayman Islands
, you could stay a bit W on the way S, to minimize the current
effect and head
towards Providencia. Also keeps you likely W of the seas off Colombia
. And, if those seas spread W and got ugly, you could duck into Providencia to wait them out...damn nice place to stop anyway.
Winds near Colombia/Panama tend to back relative to the prevailing trades so that should help get a better angle to make some easting over to the San Blas as you work your way S of San Andreas.
A rough weather
route and shaded GRIB display showing seas off Colombia now attached. Notice how the WR software
shifted the course line W south of the Caymans to try a minimize current
. Original rough course line is in red. Computed course is in blue.