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The Weather Underground was a far-left Marxist militant organization first active in 1969, founded on the Ann Arbor campus of the University of Michigan. [2] Originally known as the Weathermen, the group was organized as a faction of Students for a Democratic Society (SDS) national leadership. [3] Officially known as the Weather Underground ...
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 ...
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 ...
Tropical Storm Philippe was a long-lived but weak and poorly organized tropical cyclone which affected the eastern Caribbean during late September and early October 2023. The sixteenth named storm of the 2023 Atlantic hurricane season, [a] Philippe formed from a tropical wave on September 23, near Cabo Verde.
Tropical climate is the first of the five major climate groups in the Köppen climate classification identified with the letter A. Tropical climates are defined by a monthly average temperature of 18 °C (64.4 °F) or higher in the coolest month, featuring hot temperatures and high humidity all year-round. Annual precipitation is often abundant ...
August 25, 1973: Tropical Storm Christine formed over western Africa at 10°N-15°W before reaching tropical storm strength. [19] September 15, 1973: Hurricane Ellen brushed the Cape Verde Islands as a 45 mph (72 km/h) tropical storm, [20] before becoming a hurricane. September 4, 1979: Hurricane Gloria brushed the northern Cape Verde Islands ...
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 ...
Weather Underground also provides exclusive information including weather indices (heat index, wind chill, K index, etc.), surface and upper-level SYNOP reports for Hong Kong, upper-level weather maps for East Asia, lightning location and atmospheric electric field maps, and maps of tropical cyclone forecast tracks by different countries.