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  2. Weather radar - Wikipedia

    en.wikipedia.org/wiki/Weather_radar

    Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).

  3. Glossary of tornado terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_tornado_terms

    Weather map; Weather Prediction Center (WPC) Weather radar; Weather satellite; Weather surveillance radar (WSR) Weatherwise – A photographically adorned general interest weather magazine that frequently publishes articles on tornadoes and other severe weather. Wedge tornado – (slang) Storm chaser slang for a very large tornado. Typically a ...

  4. List of aviation, avionics, aerospace and aeronautical ...

    en.wikipedia.org/wiki/List_of_aviation,_avionics...

    Radar: RAdio Detection And Ranging RAI Radio altimeter indicator RAIM Receiver Autonomous Integrity Monitoring: Or: remote autonomous integrity monitoring RALT Radar or radio altimeter: RAREPS Weather Radar Reports [6] Provided by Air Traffic Controllers RAS rectified air speed RA(T) restricted area (temporary) RAT ram air turbine: RCO

  5. Severe weather terminology (United States) - Wikipedia

    en.wikipedia.org/wiki/Severe_weather_terminology...

    A Short-Term Forecast NOW (alt., NOWcast) is an event-driven narrative outlook of near-term weather conditions within the Weather Forecast Office’s area of responsibility, typically valid for a three- to seven-hour period. The product outlines any ongoing or recently occurring conditions—based on radar analysis, satellite imagery and other ...

  6. Radar (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Radar_(disambiguation)

    Radar is an acronym for "radio detection and ranging", referring to a system for using radio waves to detect and track the position of objects. Radar may also refer to:

  7. Glossary of meteorology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_meteorology

    Also actiniform. Describing a collection of low-lying, radially structured clouds with distinct shapes (resembling leaves or wheels in satellite imagery), and typically organized in extensive mesoscale fields over marine environments. They are closely related to and sometimes considered a variant of stratocumulus clouds. actinometer A scientific instrument used to measure the heating power of ...

  8. List of common false etymologies of English words - Wikipedia

    en.wikipedia.org/wiki/List_of_common_false...

    [Military] Brat: Not an acronym for "British Regiment Attached Traveller". [28] This is just a specific instance of the word brat, meaning child or offspring, first attested in 16th-century Scotland. [29] "Chav": see under "Other" Coma: Some falsely believe that the word coma originates from "cessation of motor activity". Although this ...

  9. Over-the-horizon radar - Wikipedia

    en.wikipedia.org/wiki/Over-the-horizon_radar

    The frequency of radio waves used by most radars, in the form of microwaves, propagate in straight lines.This generally limits the detection range of radar systems to objects on their horizon (generally referred to as "line of sight" since the aircraft must be at least theoretically visible to a person at the location and elevation of the radar transmitter) due to the curvature of the Earth.