Weather-related cancellation

A weather-related cancellation or delay is closure, cancellation, or delay of an institution, operation, or event as a result of inclement weather. Certain institutions, such as schools, are likely to close when bad weather, such as snow, flooding, tropical cyclones, or extreme heat or cold impairs travel, causes power outages, or otherwise impedes public safety or makes opening the facility impossible or more difficult. Depending upon the local climate, the chances of a school or school system closing may vary. While some regions may close or delay schools when there is any question of safety, others located in areas where bad weather is a regular occurrence may remain open, as local people may be accustomed to travelling under such conditions.

Many countries and sub-national jurisdictions have mandates for a minimum number of school days in a year. To meet these requirements, many schools that face a likelihood of closure build a few extra school days into their calendar. If, by the end of the year, these days are unused, some schools give students days off. If all snow days are exhausted, and inclement weather requires more closures, schools usually make the days up later in the year. US State education departments have, for example by administrative decision late in the 2015 Texas school year, occasionally issued waivers to schools, so that they do not need make up days for weather-related cancellations.

There are various reasons for weather-related cancellations: such as icy streets, dangerous quantities of snow, etc.

Safety is prime when deciding whether to cancel or delay. Officials may close schools to prevent accidents and other problems caused by inclement weather.

Minor storms, when safety is of less concern, may cause few or no cancellations or delays. In severe inclement weather, however, only the most essential operations remain functional. Operations considered essential include health care, emergency services, and retail of basic necessities. In health care environments, employees may remain at the facility around the clock if travel is impaired or dangerous, as those facilities contain basic accommodations for sleeping and eating such as on-call rooms. While tourist attractions generally close, those housing live animals may need essential employees to provide proper animal care.

Television and radio services generally keep operating (unless they in turn are taken off the air by the weather), and travel as necessary. Elected officials travel as necessary to provide services to the public. Snow removal crews remain at work.

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Wikipedia