Health and Safety Code §571.0165

(a) If extremely hazardous weather conditions exist or a disaster occurs, the judge of a court having jurisdiction of a proceeding under Chapters 572 , 573 , 574 , and 575 or a magistrate appointed by the judge may by written order made each day extend the period during which the person may be detained under those chapters until 4 p.m. on the first succeeding business day. (b) The written order must declare that an emergency exists because of the weather or the occurrence of a disaster. (c) This section does not apply to a situation for which a specific procedure is prescribed by this subtitle for extending the detention period because of extremely hazardous weather conditions or the occurrence of a disaster.