Observable

a.	1.	Capable of being observed; discernible; noticeable. The difference is sufficiently observable. - Southey.
	2.	Worthy of being observed; important enough to be noted or celebrated; as, an observable anniversary.
	3.	Noteworthy; remarkable.

Adj.

1.

observable - capable of being seen or noticed; "a discernible change in attitude"; "a clearly evident erasure in the manuscript"; "an observable change in behavior" Synonyms: evident, discernible

apparent, appreciable, beholdable, clear, clear as crystal, crystal-clear, detectable, discernible, disclosed, distinct, evident, explicit, exposed, exposed to view, express, hanging out, in evidence, in full view, in plain sight, in view, indisputable, indubitable, insight, manifest, memorable, naked, notable, noticeable, obvious, open, open to view, open-and-shut, outcropping, palpable, patent, perceivable, perceptible, perspicuous, plain, plain as day, recognizable, red-letter, revealed, rubric, seeable, self-evident, self-explaining, self-explanatory, sensible, showing, tangible, to be seen, transparent, unclouded, unconcealed, undisguised, unhidden, unmistakable, viewable, visible, visual, witnessable