Va. Code Ann. § 15.2-111

By resolution adopted at a regular meeting, any political subdivision, board of zoning appeals, or other local government board, commission, or authority may fix the day or days to which a regular meeting shall be continued if the chairman, or vice-chairman if the chairman is unable to act, finds and declares that weather or other conditions are such that it is hazardous for members to attend the regular meeting. Such findings shall be communicated to the members and the press as promptly as possible. All hearings and other matters previously advertised shall be conducted at the continued meeting, and no further advertising is required.