Climatologists can look back through years of records to find out how often droughts happen in a specific city or region. Scientists have proven Droughts can happen anywhere, but it may happen more often in some areas than in others, because they used careful weather instruments.
Some examples of weather instruments are:
Thermometers: Used in many places to measure temperature. Scientists use these to measure the temperature in a specific range.
Hygrometer: Device that measures the humidity in the local atmosphere. Scientists use this to measure the amount of water vapor in the air to predict fog etc.
Barometer: are used to measure the pressure in the atmosphere. Changing pressure in the atmosphere can tell scientists about storms approaching
Common weather in SouthEast Region: