(a) Accumulation of snow upon a sidewalk so as to endanger the public health and safety by preventing the safe and reasonable flow of pedestrian traffic is hereby declared a nuisance.
(b) Any person who causes or maintains a nuisance in violation of subsection (a) of this section is subject to the abatement procedure provided in Section 12-3 of this Code subject to the following:
(1) The owner of property abutting any sidewalk shall clear the sidewalk after any snow event with an accumulation of four (4) or more inches.
(2) The owner of property on which a sidewalk abuts any street must have such sidewalk cleared within twenty-four (24) hours of the end of the snow event.
(3) The end of the snow event shall be indicated on the government's website, in public communications made by the government related to the end of the snow event and in any notice of violation.
(c) The government shall not issue a notice of violation for a violation of this section if the street abutting the property has not been plowed.
(d) In the event of the presence of extreme weather conditions, the mayor or his designee may hold the enforcement of this section in abeyance until conditions improve.
Any such announcement will be made on the government's website and in all public communications made by the government during and immediately following the snow event.