Good question. They collect upper air data, the different global models, ocean data, temperatures, climate data, data on El Nino, and a lot of other things come into play when making a forecast. The maps that you and I see on the television from our local weather anchor is just for us they do not really use that map alone to find out what is going on. That use that map as well as different weather models and different upper air data and all that information is provided to them by the National Weather Service. The National Weather Service actually collects all the data and they then put the data into their supercomputers and send all the information out to the different National Weather Service offices and that data and information is provided to the private sectors to use and make their own forecast with.
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Meteorologists use a variety of methods to collect weather data, including weather stations, radars, satellites, weather balloons, and aircraft. These tools help them gather information on temperature, humidity, pressure, wind speed and direction, and precipitation, enabling them to make accurate weather forecasts.
They use a device called the "Doppler radar". It gathers info by getting echos of the weather. It is similar to how dolphins find food to eat. Everytime a fish is slpashing around, then the dolphin hears the echos from your movement.
Meteorologists use different instruments to collect data. Some of these instruments are weather balloons and barometers that collect data on air pressure, temperatures and velocity.
Meteorologists gather their weather information from instruments like a Anemometer, Barometer, and Hygrometer. They measure the air pressure, wind speed and the moisture in the air.
Meteorologists gather information from closely packed satellites. They can predict any type of weather(not that it would be always correct)or danger(this is most likely to be correct).
they use satellites and barometers and thermometers
A meteorologist collects data about Temperature, Humidity, Precipitation, etc.
Meteorologist.
Some instruments used to collect weather data include thermometers, barometers, anemometers, hygrometers, rain gauges, weather balloons, satellites, and weather radars.
A meteorologist studies the Earth's atmosphere and weather patterns. They analyze data to forecast weather, study climate trends, and monitor environmental conditions.