Understanding Weather

a cloud with extensive vertical development. a rain cloud. a middle cloud containing ice pellets.

Radiation fog and ice fog. Advection fog and upslope fog. Steam fog and ground fog.

Rain-induced fog. Upslope fog. Steam fog.

Warm, moist air over low, flatland areas on clear, calm nights. Moist, tropical air moving over cold, offshore water. The movement of cold air over much warmer water.

An air mass moving inland from the coast in winter. A warm, moist air mass on the windward side of mountains. A light breeze blowing colder air out to sea.

Nimbostratus. Cumulonimbus. Towering cumulus.

rain. fog. frost.

air temperature. Dew Point. stability of the air.

The temperature at which condensation and evaporation are equal. The temperature at which dew will always form. The temperature to which air must be cooled to become saturated.

cool, dense air moving inland from over the water. warm, dense air moving inland from over the water. water absorbing and radiating heat faster than the land.