What is the difference between the dust storms of the 1930s and the haboobs we experience in The Valley?
1930s Dust Storm = Synoptic Scale - Dust storm of the 1930s
Size: horizontal length of 1,000 kilometers 620 miles or more
1930s Dust Storm = Cause: generated by a strong cold front passing through
Haboob = Mesoscale -
Size: horizontal length of 5 kilometers to a few hundred kilometers
Haboob = thunderstorm collapses as about 3 miles to 200 miles
Cause: generated when a thunderstorm collapses because winds move against the path of the storm