Question

a forecast indicates a dew point temperature equal to the air temperature. what does this information imply? (1 point) relative humidity is 100% and it may rain. relative humidity is 0% and it may rain. relative humidity is 100% and there is no chance of rain. relative humidity is 0% and there is no chance of rain.

Explanation:

When the dew - point temperature equals the air temperature, the air is saturated. Relative humidity is calculated as \(\frac{\text{actual vapor pressure}}{\text{saturation vapor pressure}}\times100\%\). At saturation, actual vapor pressure = saturation vapor pressure, so relative humidity is \(100\%\). When air is saturated (\(RH = 100\%\)), it is more likely to rain as the air can no longer hold more moisture in vapor form and may condense to form precipitation.

Answer:

Relative humidity is \(100\%\) and it may rain.