Current Watches and Warnings
California, San Luis Obispo County Mountains
Statement as of 3:47 PM PDT on October 30, 2014
Expires 9:00 AM EDT on October 31, 2014
... Pacific storm system to affect southwestern California Friday
afternoon through Saturday...
A cold upper level trough of low pressure and surface cold front
will bring periods of Rain... Mountain snow... possible
thunderstorms... and gusty winds to southwestern California Friday
afternoon through Saturday.
A fast moving cold front will spread rain along the central coast by
midday Friday. The precipitation will move inland over San Luis
Obispo and Santa Barbara counties Friday afternoon... then southeast
across Ventura and Los Angeles counties through Friday evening.
Showers will persist into Saturday morning across the region... with
a chance of residual showers mainly on north facing mountain slopes
by Saturday afternoon and lingering into early Sunday morning. Most
areas are expected to see 3 to 4 hours of rain with the initial
front... then turn showery as the front moves east. There will also
be a slight chance of thunderstorms over San Luis Obispo and Santa
Barbara counties Friday night as colder air moves in aloft. Any
thunderstorms would have the potential to bring brief heavy rain and
Rainfall amounts from Friday afternoon through Saturday are
generally expected to range between three quarters of an inch to one
and one half inches along the central coast... with local amounts up
to two inches across northwestern San Luis Obispo County.
Otherwise... rainfall of one quarter to three quarters of an inch can
be expected for most areas... with local amounts up to one inch in
the San Gabriel Mountains.
Snow levels will start out above 7500 feet through Friday evening
then fall to near 6500 to 7000 feet by late Friday night... and to
6000 to 6500 feet by Saturday morning. Most of the steady
precipitation should be over before the snow levels lower
significantly. Even so... 2 to 4 inches of snow accumulation will be
possible for the San Gabriel Mountains around 7000 feet and
above... with an inch or less between 6000 and 7000 feet. With the
expected snowfall combined with gusty winds... a Winter Weather
Advisory may eventually be needed for the San Gabriel Mountains.
Southwest winds gusting to 35 to 45 mph are also expected over the
mountains of Ventura and Los Angeles counties and in the Antelope
Valley Friday afternoon and Friday night in advance of the front.
Winds will turn northwest over the area by Saturday morning with
gusts 40 to 45 mph possible in the mountains and Antelope Valley.
Residents near the Colby burn area should monitor the latest
National Weather Service forecasts and statements as the
potential for locally heavy downpours Friday night could bring the
threat of minor mud and debris flows.
Since this will be the first widespread rain event in quite some
time... roads will be extra slick due to months of oil buildup on
paved surfaces. Motorists are urged to use extra caution in the
rain. In addition... people planning to travel into the mountains
should be prepared for winter weather driving conditions over the
Listen to NOAA Weather Radio or your local media for the latest
updates on this storm system.
Public Information Statement
Statement as of 10:50 AM PDT on October 30, 2014
... Criteria changes for frost and freeze hazards across
National Weather Service Los Angeles/Oxnard will change the
frost-freeze hazard criteria and implement a new hard freeze hazard
criteria for the upcoming 2014-15 winter season. Watch... warning...
and advisory level criteria changes are a result of discussions and
feedback from critical weather partners and are minor refinements to
The NWS products (identifier) with new criteria include...
1. Frost advisory (npwlox) - predicted temperatures of 33-35
degrees for 2 hours or more over a widespread area.
2. Freeze warning (npwlox) - predicted temperatures of 29-32
degrees for 2 hours or more over a widespread area.
3. Hard freeze warning (npwlox) - predicted temperatures of 28
degrees or less for 2 hours or more over a widespread area.
All freeze and/or hard freeze warnings will typically be preceded by
a watch from 12-48 hours in advance when the potential of meeting
warning criteria exists.
For a listing of hazard criteria visit our webpage at:
For additional questions about this criteria change please contact -
warning coordination meteorologist
NWS Los Angeles/Oxnard
- Alaska - Special Statement
- Arkansas - Freeze Warning , Freeze Watch
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- - Gale Warning