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Severe thunderstorm warning (SVR) – A severe thunderstorm is indicated by Doppler weather radar or sighted by Skywarn spotters or other persons, such as local law enforcement. A severe thunderstorm contains large damaging hail of 1 inch (2.5 cm) in diameter or larger, and/or damaging winds of 58 mph (93 km/h) or greater.
Weather Underground is a commercial weather service providing real-time weather information over the Internet. It provides weather reports for most major cities around the world on its Web site, as well as local weather reports for newspapers and third-party sites. Its information comes from the National Weather Service (NWS), and over 250,000 ...
A tropical cyclone is a rapidly rotating storm system with a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depending on its location and strength, a tropical cyclone is called a hurricane ( / ˈhʌrɪkən, - keɪn / ), typhoon ...
Mesoscale convective system. A mesoscale convective system ( MCS) is a complex of thunderstorms that becomes organized on a scale larger than the individual thunderstorms but smaller than extratropical cyclones, and normally persists for several hours or more. A mesoscale convective system's overall cloud and precipitation pattern may be round ...
Cyclone Marcus at peak intensity. The most intense tropical cyclone (s) in the Australian Region were cyclones Gwenda and Inigo. By 10-minute sustained wind speed, the strongest were Cyclone Orson, Cyclone Monica and Cyclone Marcus . Storms with an intensity of 920 hPa (27.17 inHg) or less are listed.
Highest wind gusts. 113.4 m/s (254 mph; 220.4 kn; 408 km/h) April 10, 1996. Cyclone Olivia in Barrow Island, Western Australia. [ 11] Highest accumulated cyclone energy (ACE) index for a tropical cyclone. 87. February 4, 2023 – March 14, 2023. Cyclone Freddy in the Australian region and South-West Indian Ocean.
Commons: Haiyan images. Typhoon Haiyan 's meteorological history began with its origins as a tropical disturbance east-southeast of Pohnpei and lasted until its degeneration as a tropical cyclone over southern China. The thirteenth typhoon of the 2013 Pacific typhoon season, Haiyan originated from an area of low pressure several hundred ...
A second type of subtropical cyclone is a mesoscale low originating in or near a frontolyzing zone of horizontal wind shear, also known as a "dying" frontal zone, with radius of maximum sustained winds generally less than 50 kilometers (31 mi). The entire circulation may initially have a diameter of less than 160 kilometers (99 mi).