Category 4 or Category IV may refer to: *

Category 4 cable Category 4 cable (Cat 4) is a cable that consists of eight copper wires arranged in four unshielded twisted pairs (UTP) supporting signals up to 20 MHz. It is used in telephone networks which can transmit voice and data up to . ...

, a cable that consists of four unshielded twisted-pair wires * Category 4 fireworks, British fireworks that are for sale only to professionals * Category 4 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 ...

** Any of several hurricanes listed at

list of Category 4 Atlantic hurricanes A Category 4 Atlantic hurricane is a tropical cyclone that reaches Category 4 intensity on the Saffir–Simpson scale. Category 4 hurricanes that later attained Category 5 strength are not included in this list. The Atlantic ...

or list of Category 4 Pacific hurricanes * Category 4 pandemic, on the Pandemic Severity Index, an American influenza pandemic with a case-fatality ratio between 1% and 2% * Category 4 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 and list of Regional Snowfall Index Category 4 winter storms * Category 04 non-silicate mineral - oxides * Category four stadium, a football stadium of the highest quality as ranked by the UEFA * Category IV New Testament manuscripts - Western * Category IV measurement - performed at the source of the low-voltage installation * Category IV vintage car condition - ''Very good'' * Category IV Armed Forces Qualification Test scores - 10-30 (further subdivided) * Category IV protected area (IUCN) - Habitat/Species Management Area

See also