Synonyms for Close in:

n.

close up, huddle, crowd, converge, cluster, bunch, clump together, besiege, assemble, cozy up. break through, cloud, clear, break, ease, clear up, lift, brighten up, fickle. dawn, twilight, night falls, sunset, sunrise, draw out. close in (noun)
draw in.

v.

motion (verb)
draw in.
surround (verb)
besiege.

Other synonyms:

brighten up, fickle, sunrise. clear up, draw out, twilight, sunset. besiege. break through. ease. cloud. lift. break. clear.