Definition of
monsoon... Any wind that reverses its
direction seasonally.
The peak period for
monsoonal related thunderstorm activity
in southern California is from mid July
through early September.
Usually the monsoonal
pattern is produced by an area of high
pressure over the four corners. The
clockwise flow around the high draws the
moisture north/northwest into the
southwest...including the deserts and
mountains of southern California. At
times the high over the four corners will
move slightly east or westward. If the
high moves west...the normal result is an
increase in thunderstorm activity over
southern California.
Below is a diagram of what
was explained above...
Click the diagram
to enlarge
The monsoon at times will
be enhanced by a wave moving along the
southeasterly flow or increase moisture
from a tropical system.
The three greatest threats
from monsoonal related thunderstorms
are...
| Storm
Photos from Past Monsoon
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| Click for
safety information... |
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| Thundestorm/Rainfall...
Current/Forecast Information |
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| Additional
information on the
"Monsoon" |
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