Haines IndexThis is also called the Lower Atmosphere Stability Index. It is computed from the
morning (12Z) soundings from RAOB stations across North America. The index is composed of a
stability term and a moisture term. The stability term is derived from the temperature difference at
two atmosphere levels. The moisture term is derived from the dew point depression at a single
atmosphere level. This index has been shown to be correlated with large fire growth on initiating
and existing fires where surface winds do not dominate fire behavior. The Haines Indices range
from 2 to 6 for indicating potential for large fire growth
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