Dew and Frost, R.H near 100% (depends on type of nuclei), dew, frozen dew, frost; haze, dry or wet, fog, radiation fog, ground fog (valley fog), advection fog, evaporation (mixing) fog

Cloud classification: high clouds, cirrus, cirrocumulus, cirrostratus; middle clouds, altocumulus, altostratus; low clouds, nimbostratus, stratocumulus, stratus; vertical development, cumulus, cumulus congestus, cumulonimbus, weird clouds, lenticular clouds, banner cloud, contrails

Describe the three main ways by which fog forms:  ground fog (valley fog), advection fog, and evaporation (mixing or steam) fog.  Which type is most common in the Tahoe Basin?  Which type is most common in the Bay Area?

Describe the different types of clouds including description of appearance, general altitude, condition of occurrence.

Be able to identify cloud types from pictures. (the CD in your text is helpful).

What role do condensation nuclei play in formation of clouds? What are hygroscopic and hydrophobic nuclei?