United States USA Date:1931 Duration:7 min 7 sec Sound:NO SOUND
A map of United States with 200 weather bureaus marked on it. Men assemble weather data at weather bureau. A young boy looks at the process. Symbols used to convey weather conditions. Information plotted on a blank base map. Weather data entered against each station. Isobars and Thermo bars plotted onto the map which is used to forecast weather conditions.
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