Meteorological observation, measurement, forecast, detection and alarm apparatus and instruments comprising of sensors, detectors, transmitters, receivers and displays, visual and audio alarm apparatus and instruments, rain gauges, rain detectors, ceilometers, visibility sensors, transmissometers, forward scatter sensors, present weather detectors, anemometers, albedometers, barometers, humidity meters, signal transmitters, temperature sensors, radio sounding sensors, wind indicators, ultraso...