monsoon... Any wind that reverses its direction
The peak period
for monsoonal related thunderstorm activity in southern
California is from mid July through early September.
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...
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
greatest threats from monsoonal related thunderstorms
|Additional information on the