Friday, October 18, 2019

[CaliforniaDisasters] On This Date In California Weather History (October 18)

2015: Thunderstorms dropped very heavy rainfall in Death Valley.
Scotty's Castle measured 2.72" of rain in roughly five hours.
Major flash flooding hit the Grapevine Canyon area of Death Valley National Park .
Mesquite Springs Campground and Grapevine Ranger Station were evacuated; eight vehicles full of visitors and three park rangers were stranded overnight near Ubehebe Crater.
Trenches up to six feet deep were cut into Scotty's Castle Road.
24 power poles were downed.
Mud and debris damaged or destroyed the water supply infrastructure, stables, visitors center, and the cookhouse.

2010: A National Weather Service Survey Team has determined that the storm damage in the Rancho Santa Fe Subdivision in Kingman, Arizona that occurred on 18 October between 445 pm and 5 pm was caused by an EF0 tornado on the Enhanced Fujita Scale. 
Damage estimates were consistent with winds around 75 mph. 
The tornado made two brief touchdowns separated by 1.2 miles in distance with two single family homes suffering minor roof damage.  
The tornado likely quickly generated on the southern edge of thunderstorms that were moving northeast to southwest across the area. 
The tornado formed on this boundary in the very lowest part of the thunderstorms and moved with the storms.

2005: Weak low pressure off the Southern California Coast entrained tropical moisture that resulted numerous rainfall report of 2.5"-3" of rain in the Kern County Mountains around Frazier Park from the evening of the 17th into the morning of the 18th.
Heavy rainfall in the Kern County Mountains and Deserts led to flooding on the 17th and early on the 18th. 
On the Kern Desert Floor normally dry streams flash flooded affecting areas north of California City, including State Highway 14 near the intersection with Redrock-Randsburg Road as well as upstream, smaller roadways.
Rainfall amounts reported in the Kern Desert included 2.37" and 2.55" around Rosamond, 1.83" at Boron, and 1.16" at Mojave. 

2004: A significant early snowfall occurred in the Southern Sierra Nevada Mountains of Central California October 17-18. 
Precipitation amounts included 16" of new snow at Agnew Pass; 14" at Upper Burnt Corral; 13" at Green Mountain; 11" at Blackcap Basin; and, 7" at Farewell Gap (Tulare County Mountains).

1988:
China Lake NAS reached 100° F for a high temperature.
This is the latest triple digit high temperature on record here.

1969: Palomar Mountain ended a 163 day dry spell by recording a whopping 0.04" of rainfall.

1963: Strong thunderstorms hit the Twentynine Palms area.
Flash floods and debris flows moved into several homes and yards.
Roads were left impassable.

1949: Fresno recorded a low of 36° F, setting a record for the date.
This was also the first of 5 days in a row with lows in the 30's, a record for the month of October in Fresno.

1946: The morning low temperature at Reno, NV was 19° F and 1" of snow fell there.

1920: 20" of snow fell at Tahoe City.

1893: San Jose had a low temperature of 30
° F after seeing a low of 31° F the previous day.

1888: A strong thunderstorm produced extensive washouts along the railway between Yuma, AZ, and Texas Hill, AZ.

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