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 16&nb ...

, a cable that consists of four unshielded twisted-pair wires *

Category 4 fireworks Category, plural categories, may refer to: Philosophy and general uses * Categorization, categories in cognitive science, information science and generally *Category of being * ''Categories'' (Aristotle) *Category (Kant) *Categories (Peirce) * ...

, 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 scales of classifications are used officially by the met ...

** Any of several hurricanes listed at

list of Category 4 Atlantic hurricanes Category 4 hurricanes are tropical cyclones that reach 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 basin inclu ...

list of Category 4 Pacific hurricanes Category 4, the second-highest classification on the Saffir–Simpson Hurricane Scale, is used for tropical cyclones that have winds of . The division of the eastern and central Pacific basins occurs at 140° W; the eastern Pacific cover ...

* 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 The Northeast Snowfall Impact Scale (NESIS) was created to measure snowstorms in the U.S. Northeast in much the same way the Saffir-Simpson Hurricane Scale records hurricane intensity and the Enhanced Fujita Scale with tornadoes. The Scale NESI ...

and the

Regional Snowfall Index The Regional Snowfall Index (RSI) is a scale used by NOAA to assess the societal impact of winter storms in the eastern two-thirds of the United States and classify them into one of six categories. The system was first implemented in 2014, and is ...

** Any of several winter storms listed at

list of Northeast Snowfall Impact Scale winter storms The Northeast Snowfall Impact Scale (NESIS) is a scale used to categorize winter storms in the Northeast United States. The scale was developed by meteorologists Paul Kocin and Louis Uccellini, and ranks snowstorms from Category 1 ("notable") to C ...

and

list of Regional Snowfall Index Category 4 winter storms The Regional Snowfall Index (RSI) is a system used by NOAA to assess the societal impacts of winter storms in the United States. The scale is a replacement for the Northeast Snowfall Impact Scale (NESIS) system, which was used for winter storms j ...

* Category 04 non-silicate mineral - oxides *

Category four stadium UEFA stadium categories are categories for football stadiums laid out in UEFA's Stadium Infrastructure Regulations. Using these regulations, stadiums are rated as category one, two, three, or four (renamed from elite) in ascending ranking order. ...

, 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