Mesohigh and gust front
- the downdraft also can produce two
other features associated with a storm....
- mesohigh - an area of high pressure at the
surface created by the cold heavy pool of air
associated with the downdraft
- gust front
- the leading edge
of the cold air associated with the downdraft
- gust front passage is noted by:
- calm winds
- then gusty winds
and a temp drop
- then precip
- the gust front is a convergence
region between the cool outflow and the warm,
- hence, the gust front is able to
force the warm, moist air upward, generating a
- if a storm continuously
regenerates in this manner, it is called a multi-cell storm.
Find the different cells in this picture.
- shelf (arcus) and roll clouds are
often associated with gust fronts
|image adopted from Meteorology Today by C.
Donald Ahrens © 1994 West Publishing Company