Monday, September 12, 2016

[californiadisasters] On This Date In California Weather History (September 11)

2012: A stationary thunderstorm brought persistent, heavy rain to Mecca.
3"-5" of rain fell in just a couple hours (more than a year's worth).
Floodwaters damaged a school, a mobile home park and several orchards.

A thunderstorm produced strong outflow winds measured at 67 mph in La Quinta.
Another thunderstorm produced golf ball sized hail in Ranchita.

2004: Severe thunderstorms in Borrego Springs produced one inch hail that broke windows.
Strong winds gusted to 60 mph before the anemometer was destroyed, and knocked down six power poles.
Training thunderstorms over Johnson Valley produced severe flash flooding.
Hwy. 247 was washed out in numerous sections.
Minor damage to homes occurred and 12 vehicles were trapped.
In La Quinta, 138 trees were knocked down at one golf course with damage to a building.
More trees fell down at other golf courses.
Roof tiles were blown off.
Damage occurred to power poles and transformers.

1998: A small tornado, rated F0, tore the roof off a Henderson, NV, warehouse and destroyed a large block wall at a nearby service station.

1990: It was 117° F in Borrego Springs, the highest temperature on record for September.
This also occurred the previous day on 9.10.

1983: Half Moon Bay had a high of 94° F -- a record for the month.

1982: The morning low temperature at Reno, NV was a chilly 29° F.

1976: Record rains that started on 9.9 ended on 9.12 came from Tropical Storm Kathleen (called a 160+ year event by meteorologists).
14.76" fell on south slopes of Mt. San Gorgonio, 10.13" at Mt. Laguna, 8" at Mt. San Jacinto, 4"+ in the Little San Bernardino Mountains, and 1.8"-2.8" in the Coachella Valley.
Deep Canyon (above La Quinta) recorded 2.96" in three hours on 9.10.
Rainfall in the Santa Rosa Mountains above the Coachella Valley was called the â heaviest in recorded history
6 were buried and killed in sand in Ocotillo.
Floods of record were attained at numerous streams around the Coachella Valley.
1.84" of rain fell in Riverside on this day, 2.09" fell in Borrego Springs, 2.33" fell in Victorville, 2.57" fell in Idyllwild, and 5" fell in Palomar Mountain, each the greatest daily amounts on record for September.
The Victorville amount is also the third highest daily amount on record.
This occurred during the El Nino of 1976-77.
Hurricane Kathleen also brought the southwest the highest sustained winds ever associated with an eastern Pacific tropical cyclone with sustained winds of 57 mph at Yuma on 9.10.

1976: The remains of Hurricane Kathleen move across Baja and into southern California near El Centro.
With its circulation still intact, tropical storm force winds produce considerable damage in Yuma. Sustained winds exceed 50 mph, and gust as high as 76 mph in Yuma, AZ.
One man is killed as a 75 foot palm tree crashes onto his mobile home.
Severe flooding occurs in Mohave county.

1971: It was 100° F in Palomar Mountain, the highest temperature on record.
This occurred on eight other occasions.

1960: North northwestward moving Hurricane Estelle dissipated west of the central Baja California coast from 9.9 to this day.
On this day a thunderstorm hit the area east of Lucerne Valley.
The resulting flash flood was four feet deep and washed out a section of road, stranding several vehicles east of Lucerne Valley.

1952: Chilliest morning in three day stretch from the 10th through 12th in Fresno; record lows were set each on morning and all still stand to this day.
Low of 44° F on this date is the earliest 45° F or lower reading on record in Fresno.

1939: 4"of rain fell across the deserts and mountains as a dying tropical cyclone moved across Baja California into southwestern Arizona on this day and on 9.12.
This was the second tropical cyclone to impact California during the busy month of September 1939.
A strong El Nino contributed to the activity.

1888: Fresno set an all-time record high of 111° F for the month of September.
This is also the latest in the season that Fresno has had a high temperature of 110° or better.

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



Posted by: Kim Noyes <>

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