24 Hour News Source
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The 24 Hour News Source brand was a common format used by television stations in the United States starting in the early 1990s for television stations that provided frequent news updates outside of regularly scheduled newscasts.
An early version of the concept began on now-defunct independent station WXPO in Boston, Massachusetts from 1969 to 1970; although it did not become popularized throughout the country until the late 1980s. The concept of the "24 Hour News Source" format involved stations providing brief news updates (which were already common on television stations since the 1970s, although airing only at certain times during the day), which usually ran 30 seconds to a minute in length on an hourly basis – particularly during time periods when regular newscasts were not being broadcast (such as during local commercial breaks within syndicated and network programs).
At its peak, dozens of stations across the United States were producing these brief news updates. Varying names used by stations that incorporated the format into their regular programming included "24-Hour News Channel", "24-Hour News Service", "24-Hour News and Weather Source" or "24-Hour News and Weather Channel" (the latter two being used by stations that provided weather updates within or in addition to these news updates). By coincidence, many television stations at this time were evolving into 24-hour programming schedules and phasing out late night sign-offs with the exception of weekend overnight and/or early Monday morning time periods, depending on the station.
The format was eventually phased out by most stations by the end of the 1990s, with many stations either reducing the frequency of news updates (such as removing them from certain dayparts) or dropping them entirely, opting to only tease news stories within promotions for their regular newscasts. As of October 2013[update], the only remaining broadcast television stations in the United States currently utilizing the "24 Hour News Source" format are CBS affiliate WISH-TV in Indianapolis, NBC affiliates WOOD-TV in Grand Rapids, Michigan and KFDX-TV in Wichita Falls, Texas, and ABC affiliate KCRG-TV in Cedar Rapids, Iowa. Fox affiliate WXIX in Cincinnati uses a format similar to the "24 Hour News Source", though that station's news updates are mainly provided in the daytime hours only.
Today, U.S. television stations with a news department generally air news stories outside of regular newscast timeslots only in the event of breaking news or a severe weather emergency, or in some cases, during halftime periods of sporting events such as NFL football games.
List of stations that use or have used the "24 Hour News Source" format
This list also includes stations who used the concept but with different branding, such as WDIV's 24 Hour NewsBeat.