Wis. Stat. § 813.04: Same; when granted; Sunday or holiday.

The injunction may be granted at any time before judgment upon its appearing satisfactorily to the court or judge, by the complaint or answer or by affidavit that sufficient grounds exist therefor. A copy of the pleading or affidavit on which granted must be served with the injunction unless previously served. In case of exigency an injunction may be granted and may be served on Sunday or on a legal holiday.