Saturday, May 20, 2017

[californiadisasters] On This Date In California Weather History (May 18)

2009: Microburst winds were reported northeast of Yuma, AZ, as thunderstorms moved through the area.
Microburst winds reached 55 mph.
The blowing dust cut the visibility briefly to zero.

A thunderstorm moving slowly from west to east produced two tornadoes
and a wet microburst in northern Apple Valley. .
Winds were estimated at 130 to 140 mph.
The winds caused building and structure damage.
Power lines arced down and produced fires.
The first
tornado moved through
mostly open country along a 3.5 mile path. The second tornado formed as the first
dissipated, and continued moving east through Apple Valley. The first tornado
flattened a few outbuildings. The second blew down several power poles, sm
structures were destroyed, and the roof was ripped off of a garage. Damage was
sporadic as this twister was rather narrow and did not make contact with the
ground consistently.
Both twisters received an F1 rating

1980: Mt. St. Helens in southwest Washington State erupted, killing 57 people, and spreading volcanic ash across Oregon, Washington, and Idaho.

1974: The morning low temperature at South Lake Tahoe was 7° F.

1974: Snow fell across the southern Sierra Nevada and the Tehachapis.
Lodgepole had 8", Grant Grove 4", Tehachapi 2.3" and Glennville, 0.3".

1957: Ben Lomond received 4.47" of rain.

1954: The high temperature in Bishop, CA reached 100° F.
This was the earliest in the year with temperatures reaching 100
° F or higher.

1949: Southeast winds up to 40 mph caused blowing sand in the San Joaquin Valley that destroyed 2,000 acres of cotton in the Wheeler Ridge area.
Near Coalinga bulldozers had to remove sand that drifted across highways.

1913: Woodfords (Alpine Co.) recorded 1.28" of precipitation.

1892: A springtime heat wave hit Southern California starting on 5.17 and ending on 5.19.
Temperatures met or exceeded 95° F in LA each day.

Source: NWS San Francisco/Monterey, Hanford, Reno, Las Vegas, Phoenix, & San Diego



Posted by: Kim Noyes <>

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