#2502 Postby AutoPenalti » Fri Aug 28, 2015 3:59 pm
Erika has been moving more westward for the past several hours and
the initial motion is 280/17. There is no change to the forecast
philosophy from the previous advisory. A generally west-
northwestward to northwestward motion is expected for the next 48
hours or so as Erika moves around the southwestern periphery of the
subtropical ridge. After that time, a northwestward and northward
turn and a decrease in forward speed are forecast as Erika moves
between the ridge and a mid- to upper-level trough over the Gulf of
Mexico. While the track guidance is generally in good agreement, it
should be noted that the guidance has been consistently forecasting
a west-northwestward turn that has so far failed to occur. On the
other hand, there is still a chance for a center to re-form
farther to the north during the passage over Hispaniola. So while
the forecast track has been shifted west of the previous advisory,
it still lies near the northern edge of the guidance envelope for
the first 48 hours to maintain some continuity with the previous
forecast. Additional adjustments may be necessary depending on how
Erika evolves during the next 12-18 hours.
Last edited by
AutoPenalti on Fri Aug 28, 2015 4:00 pm, edited 1 time in total.
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