<Tr> <Td> Visibility </Td> <Td> Poor </Td> <Td> Poor, but improving </Td> <Td> Sunny </Td> </Tr> <Tr> <Td> Dew point </Td> <Td> Steady rise </Td> <Td> Steady </Td> <Td> Rise, then steady </Td> </Tr> <P> The warm sector is the area of warmer air behind a warm front, usually between the warm and cold fronts in a depression . Temperatures are often warmer than they are before the warm front or after the cold front . Cloud types can be mixed, but usually consist of stratocumulus, which can range to being broken to covering the entire sky depending on distance from the centre of low pressure . Temperature rises and the dew point remains steady . Wind direction and speed remains steady . </P> <P> On weather maps, the surface location of a warm front is marked with a red line of half circles pointing in the direction of the front . On colored weather maps, warm fronts are illustrated with a solid red line . </P>

When is air brought by winds warm or cold