The Majority of EMS Helicopter Accidents are Weather related resulting in CIFT. Weather Reports (AREA and TERMINAL) AWOS and ASOS Stations EMS HELICOPTERS 1000’ AREA FORCAST
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The Majority of EMS Helicopter Accidents are Weather related resulting in CIFT.
Weather Reports (AREA and TERMINAL)
AWOS and ASOS Stations
PARAMETER PROCESSING RADIUS
SKY CONDITIONS 30 3-5
VISIBILITY 10 2-3
PRECIPITATION 10 1-2
FREEZING RAIN 15 2-3
TEMP/DEW POINT 5 5
WIND 2 1-2
PRESSURE 1 5
The Automated Weather Observing System (AWOS) is a suite of sensors, which measure, collect and disseminate weather data to help meteorologists, pilots and flight dispatchers prepare and monitor weather forecasts, plan flight routes, and provide necessary information for correct takeoffs and landings. AWOSs provide a minute-to-minute update that is usually provided to pilots by a VHF radio on a frequency between 118 and 136 MHz. AWOSs are categorized as either Federal or NonFederal. Federal AWOSs were purchased and are currently maintained by the FAA. NonFederal AWOSs are purchased and maintained by state, local, and private organizations. The sensors measure weather parameters such as wind speed and direction, temperature and dew point, visibility, cloud heights and types, precipitation, and barometric pressure. The AWOS does not predict weather, but many send current information to weather offices where forecasts are produced using this information along with computer model outputs, satellite photos and radar images, to name a few. Every hour on the hour, the AWOS data is made available to off-site users by those AWOSs on Service A (long line telephone communication) or satellite uplink. The aviation community, which is one of the largest users of environmental data, is the major user of the AWOS information.
Every hour on the hour, the AWOS data is made available to off-site users by those AWOSs on Service A (long line telephone communication) or satellite uplink. The aviation community, which is one of the largest users of environmental data, is the major user of the AWOS information.
AWOS I: Wind Speed, Wind Gust, Wind Direction, Variable Wind Direction, Temperature, Dew Point, Altimeter Setting, Density Altitude AWOS II: Same as AWOS I + Visibility, and Variable Visibility AWOS III: Same as AWOS II + Sky Condition, Cloud Height and TypeAWOS III-P: Same as AWOS III + Present Weather, Precipitation Identification AWOS III-T: Same as AWOS III + Thunderstorm and Lightning Detection AWOS III-P-T: Same as AWOS III + Present Weather and Lightning Detection