All Weather, Inc. (AWI), a manufacturer of weather information systems and meteorological sensors, has been selected by the North Dakota Aeronautics Commission to spearhead its upgrading of weather monitoring at 11 airports. AWI's advanced Automated Weather Observing System (AWOS) will continuously monitor weather conditions at the airports and provide up-to-the-minute data to airport personnel and pilots. “North Dakota is well-known for its sometimes harsh and quick-changing weather,” said AWI’s Barbara Baca. “The AWI AWOS is perfectly suited to those conditions. With its consistent and reliable reporting, our AWOS will be a key ingredient in ensuring air safety throughout the state. ”The AWOS, developed by AWI, is an unattended system that measures current weather conditions at an airport, including wind speed and direction, temperature, humidity, rainfall, and barometric pressure. The North Dakota airports will also be outfitted with AWI's Laser Ceilometer. These instruments use laser pulses to "see" cloud cover. Using sophisticated software algorithms, the AWI ceilometers are able to determine the height and depth of up to three layers of clouds above the airport. A series of Dual-Technology Visibility Sensors alongside the airport's runway will provide data for calculating Runway Visual Range (RVR), a highly accurate measure of visibility from a pilot's perspective.