Thursday, September 20, 2007
Rain and mountain snow across the southland on Friday/Friday night
***Updated early Friday morning, September 21st, 2007***
An early season Pacific storm system will bring unsettled conditions to the region through Saturday.
Showers will gradually increase over southern California as Friday progresses.
The bulk of the rain will likely fall during Friday evening through early Saturday morning over the southland.
Some forecast rainfall amounts...
Coastal plain (LA. county northward): 0.25 to 0.75"
Coastal plain (OC southward): around 0.25"
Coastal valleys (north): 0.25 to 075"
Coastal valleys (San Diego county): 0.10 to 0.25"
Inland valleys: 0.50 to 075"
Inland valleys (San Diego county): 0.10 to 0.25"
Mountains: 0.75" to 1.25"
...Locally higher amounts on south/southwest facing mountain slopes and foothills.
Deserts: under 0.10"
Due the rains...and the potential for flooding and debris flows... NOAA's National Weather Service Forecast Office in Rancho Bernardo has issued a Flash Flood Watch from 2pm pdt Friday afternoon through Saturday morning over the mountains of San Bernardino, Riverside, San Diego and Orange counties.
NOAA's/NWS in Oxnard has also posted a Flash Flood Watch for the inland burn areas of Catalina Island through late Friday night.
Additionally... there will be slight chance of thunderstorms through the period...mainly coastal/valley locations.
Some thunderstorms will have the potential of producing... gusty winds, brief locally heavy rains, small hail and cloud to ground lightning. A brief waterspout or tornado is also possible along the coast.
Finally... snow showers are possible at the higher elevations of the mountain areas. It's not out of the question to see a light dusting of snow over the ridgetops and peaks.
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