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  2. SIGWX - Wikipedia

    en.wikipedia.org/wiki/SIGWX

    SIGWX is a Significant Weather Chart defined by ICAO. Weather charts [1] being issued by World Area Forecast Centres [2] (from meteorological offices in London and Washington), presenting the most important meteorological phenomena relevant especially for air traffic transport. WAFC publishes them in two formats

  3. Western Blue Chip Economic Forecast - Wikipedia

    en.wikipedia.org/wiki/Western_Blue_Chip_Economic...

    The Western Blue Chip Economic Forecast has been cited in Forbes as one of the few sources of regional forecasts for the economy of the United States. [8] It has also been cited in a number of regional business journals in discussions of regional economic prospects.

  4. World Area Forecast Center - Wikipedia

    en.wikipedia.org/wiki/World_Area_Forecast_Center

    A World Area Forecast Centre (WAFC) is a meteorological centre that provides real-time meteorological information broadcasts for aviation purposes. These broadcasts are supervised by International Civil Aviation Organization (ICAO) in order to fulfill requirements of the ICAO Annex 3 covering meteorological information which is necessary for flights.

  5. SIGMET - Wikipedia

    en.wikipedia.org/wiki/SIGMET

    The eastern, central, and western regions of the coterminous United States have their own Convective SIGMET bulletin. For airmen in the U.S., there is an additional category of SIGMET known as a convective SIGMET. These are issued for convection over the coterminous U.S. on a scheduled basis, hourly at 55 minutes past the hour. The Convective ...

  6. Prognostic chart - Wikipedia

    en.wikipedia.org/wiki/Prognostic_chart

    A manual prognostic chart of the weather in the United States 36 hours into the future. Manual prognostic charts depict tropical cyclones, turbulence, weather fronts, rain and snow areas, precipitation type and coverage indicators, as well as centers of high and low pressure. [6]

  7. 557th Weather Wing - Wikipedia

    en.wikipedia.org/wiki/557th_Weather_Wing

    The 557th Weather Wing is a United States Air Force formation and its lead military meteorology center. It reports environmental situational awareness worldwide to the Air Force, the United States Army, joint warfighters, Unified Combatant Commands, the national intelligence community, and the Secretary of Defense.

  8. Weather map - Wikipedia

    en.wikipedia.org/wiki/Weather_map

    In the US, The Smithsonian Institution developed its network of observers over much of the central and eastern United States between the 1840s and 1860s once Joseph Henry took the helm. [7] The U.S. Army Signal Corps inherited this network between 1870 and 1874 by an act of Congress, and expanded it to the west coast soon afterwards.

  9. United States rainfall climatology - Wikipedia

    en.wikipedia.org/wiki/United_States_rainfall...

    The western part of the contiguous United States west of the 98th meridian, the mountains of the Pacific Northwest, the Willamette Valley, and the Sierra Nevada range are the wetter portions of the nation, with average rainfall exceeding 30 inches (760 mm) per year. The drier areas are the Desert Southwest, Great Basin, valleys of northeast ...