Souther

A northeaster in one place may be an easter, a norther, or a souther in some other locality.

Source: wiktionary

Having passed across in sight of this place, the Santa Anna tacked and stood off, as though she were awaiting a pilot, but none appearing, southered her course as if about to proceed down the coast ; having, however, rounded a small island in the river's mouth, covered with lofty trees, which completely concealed their presence, they again anchored.

Source: wiktionary

In that time three other packets loaded, and when the wind southered the four put to sea in company.

Source: wiktionary

Very probably they had already made first nests further north, which had their contents destroyed, and they fled south and were more successful with second broods. The consequence of this southering of breeding birds would in all probability cause a southering of their autumn migration routes;

Source: wiktionary