The U.S. Weather Bureau uses a mobile Doppler radar transmitting and receiving in the 3cm bandwidth to measure wind speeds in a tornado striking El Dorado, Kansas, which kills 13 people living in that city. With Doppler radar’s ability to detect and measure the velocity of wind and rain moving toward and away from the radar itself, it is ideally suited for tornado observations and detection. This mobile radar is later given to the Bureau’s National Severe Storms Laboratory in the 1960s, and is the beginning of a lengthy research program that culminates in the nationwide rollout of Doppler-based NEXRAD (Next Generation Radar) in the 1990s.

The 34th episode of Rod Serling’s The Twilight Zone airs on CBS. Anne Francis stars in an episode written by Serling.
The 16th episode of Sydney Newman’s spy series The Avengers, starring Ian Hendry and Patrick Macnee, airs on UK broadcaster ABC. This episode is now missing from the archives, but will be recreated in audio form in the 21st century by Big Finish Productions.
The
The Air Force officially cancels its plans for Manned Orbiting Laboratory, a space station in development that would have used Gemini capsules and technology to build and maintain a military outpost in space. The airmen selected as MOL crew members are transferred to NASA, where some of them will go on to fly the Space Shuttle, a vehicle whose design is still in its infancy at this point. The Air Force is also consulted on its military satellite launch needs, which are taken into account in the design of the shuttle.
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No sooner has Paramount’s movie arm axed
ITV airs
Its primary mission satisfactorily completed, the NASA/ESA ISEE-3 (International Sun-Earth Explorer 3) satellite has a surplus of maneuvering fuel left over, and is given a new mission: it begins a series of over a dozen maneuvers utilizing both thrusters and gravity-assists, intended to push it out of its LaGrange point between Earth and the sun and toward a 1985 rendezvous with Comet Giacobinni-Zinner. Upon its final maneuver in 1983, ISEE-3 will be renamed ICE (International Cometary Explorer) and, after the complex series of course changes, will be perfectly targeted for its 1985 comet encounter.
Konami introduces the arcade game
The 11th episode of the sci-fi crime series TekWar, based on William Shatner’s novel series, airs as part of the Universal Action Pack syndication package. Greg Evigan, William Shatner, and Maria del Mar (Mercy Point) star.
The week-long national syndication window opens for
Cable channel TNT premieres 
Japan’s unmanned Kaguya spacecraft, also known as SELENE, is intentionally crashed into the surface of Earth’s moon, which it has been orbiting and studying for nearly two years (twice its intended one-year operational lifetime). Having completed its observations and studies (as well as transmitting back to Earth high-definition camera views of the moon from orbit), Kaguya impacts near the crater Gill.
The 838th episode of Doctor Who airs on BBC1 (the 139th episode since the series’ revival), starring Peter Capaldi, Pearl Mackie, and Matt Lucas. Michelle Gomez guest stars in a story that sees the return of the Ice Warriors and another character not seen since the 1970s.