http://www.ghcc.msfc.nasa.gov/GOES/

go down till you see the picture wich has the carribean on it click on the visible picture.

look at the options above the sat photo select animation NOT animate image below .

in those same options select enough images to go back to at least this afternoon i clicked 12 you can do what you want

then click on the sat photo between hispaniloa and south america on the 70th longtidude

when the image loads there will be a cross hair in the center where 15 n and 70w intersect look in the se qaudrent of the cross hairs