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This METAR example is from Trenton-Mercer Airport near Trenton, New Jersey, and was taken on 5 December 2003 at 18:53 UTC. METAR KTTN 051853Z 04011KT 1/2SM VCTS SN FZFG BKN003 OVC010 M02/M02 A3006 RMK AO2 TSB40 SLP176 P0002 T10171017= [14] METAR indicates that the following is a standard hourly observation.
TAFs are issued at least four times a day, every six hours, for major civil airfields: 0000, 0600, 1200 and 1800 UTC, [4] and generally apply to a 24- or 30-hour period, and an area within approximately five statute miles (8.0 km) (or 5 nautical miles (9.3 km) in Canada) from the center of an airport runway complex. TAFs are issued every three ...
Flight weather is reported in a similar format as in METAR. [2]: 29 Temperature (/TA) is the air temperature in whole degrees Celsius as a two-digit value, with negative temperatures preceded by a minus (-) sign. In the United States, negative temperatures are preceded by the letter M (M). [4] [5]
ICAO Meteorological Information Exchange Model (IWXXM) is a format for reporting weather information in XML/GML.IWXXM includes XML/GML-based representations for products standardized in International Civil Aviation Organization (ICAO) Annex III, such as METAR/SPECI, TAF, SIGMET, AIRMET, Tropical Cyclone Advisory (TCA), Volcanic Ash Advisory (VAA), [1] Space Weather Advisory and World Area ...
Automatic terminal information service, or ATIS, is a continuous broadcast of recorded aeronautical information in busier terminal areas.ATIS broadcasts contain essential information, such as current weather information, active runways, available approaches, and any other information required by the pilots, such as important NOTAMs.
ASOS sensors, located at Salinas, California. Surface weather observations have traditionally been taken at airports due to safety concerns during takeoffs and landings. The ICAO defines the International Standard Atmosphere (also known as ICAO Standard Atmosphere), which is the model of the standard variation of pressure, temperature, density, and viscosity with elevation/altitude in the ...
The AWC is also responsible for aviation warnings, such as AIRMETs and SIGMETs, for the United States, including its overseas territories, and northern portions of the Atlantic and Pacific Oceans. [ 1 ] [ 2 ] It is finally the center that issues forecasts for the displacement of volcanic ash and forest fire smoke plumes for the same territories.
One (1) Meteorologist-in-Charge (MIC) and three (3) General Forecasters that comprise the Center Weather Service Unit are co-located inside each of the FAA's 21 CONUS Air Route Traffic Control Centers (ARTCCs) and are structured under the Department of Commerce (DOC)'s National Oceanic and Atmospheric Administration (NOAA) National Weather ...