Category 1 can refer to: *

Category 1 cable Category 1 cable, also known as Cat 1, Level 1, or voice-grade copper, is a grade of unshielded twisted pair cabling designed for telephone A telephone, colloquially referred to as a phone, is a telecommunications device tha ...

, an electrical standard for communications wiring * Category 1 tropical cyclone, on any of the

Tropical cyclone scales Tropical cyclones are ranked on one of five tropical cyclone intensity scales, according to their maximum sustained winds and which tropical cyclone basins they are located in. Only a few classifications are used officially by the meteorologi ...

* Category 1

pandemic A pandemic ( ) is an epidemic of an infectious disease that has a sudden increase in cases and spreads across a large region, for instance multiple continents or worldwide, affecting a substantial number of individuals. Widespread endemic (epi ...

, on the Pandemic Severity Index, an American influenza pandemic with a case-fatality ratio of less than 0.1% * Category 1 winter storm, on the Northeast Snowfall Impact Scale and the Regional Snowfall Index ** Any of several winter storms listed at list of Northeast Snowfall Impact Scale winter storms * Category 01 non-silicate mineral - native element minerals

See also