Land Management Forecasts
Issued by NWS Los Angeles, CA

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ECCDA Discussions
National Weather Service Los Angeles/Oxnard CA
930 AM PDT Sat Aug 19 2017

ECC029-201030-
Los Padres National Forest-
Discussion for Vandenberg ECC Dispatch
930 AM PDT Sat Aug 19 2017

...Discussion from Los Angeles/Oxnard...

...Threat of afternoon thunderstorms across local mountains Today
through Tuesday...

...Potential for brief heavy rainfall with localized flash flooding
  across Ventura and Santa Barbara county mountains on this
afternoon and early evening...

A weak low pressure system spinning off the coast of Southern
California will bring some moisture and increasing instability
across the local mountains during the next few days resulting in a
threat of afternoon thunderstorms. The best moisture and instability
each afternoon and early evening is expected to be focused across
the mountains of Ventura and Santa Barbara mountains where there
will be the greatest thunderstorm threat. There will be the
potential for brief heavy rainfall with localized flash flooding
this afternoon and early evening across the mountains of Ventura and
Santa Barbara  counties due to increased available moisture and weak
upper level  steering flow, which will result in slow moving storms.
In addition, any thunderstorms that develop during this time will be
capable of  producing gusty and erratic downdraft winds along with
small hail.

Otherwise pretty quiet pattern next several days with typical
diurnally driven winds. Gradual cooling with increased marine layer
coverage is expected through early next week.


...Discussion from Monterey...

Slightly cooler temperatures expected inland  through the weekend
and into early next week as a low develops  over the southern half
of the fire district. Dry seasonal conditions expected to prevail
through the forecast period with persistent night and morning low
clouds expected along the coast and locally inland below the 1500 ft
marine layer.

Note : All winds are 20-foot Winds Unless otherwise specified.
Thunderstorms imply strong, gusty and erratic winds.



$$

ECC028-201030-
Santa Barbara County excluding Los Padres National Forest-
Discussion for Santa Barbara ECC Dispatch
930 AM PDT Sat Aug 19 2017

...Threat of afternoon thunderstorms across local mountains Today
through Tuesday...

...Potential for brief heavy rainfall with localized flash flooding
  across Ventura and Santa Barbara county mountains on this
afternoon and early evening...

A weak low pressure system spinning off the coast of Southern
California will bring some moisture and increasing instability
across the local mountains during the next few days resulting in a
threat of afternoon thunderstorms. The best moisture and instability
each afternoon and early evening is expected to be focused across
the mountains of Ventura and Santa Barbara mountains where there
will be the greatest thunderstorm threat. There will be the
potential for brief heavy rainfall with localized flash flooding
this afternoon and early evening across the mountains of Ventura and
Santa Barbara  counties due to increased available moisture and weak
upper level  steering flow, which will result in slow moving storms.
In addition, any thunderstorms that develop during this time will be
capable of  producing gusty and erratic downdraft winds along with
small hail.

Otherwise pretty quiet pattern next several days with typical
diurnally driven winds. Gradual cooling with increased marine layer
coverage is expected through early next week.


$$

ECC031-201030-
Angeles National Forest-
Discussion for Lancaster ECC Dispatch
930 AM PDT Sat Aug 19 2017

...Threat of afternoon thunderstorms across local mountains Today
through Tuesday...

...Potential for brief heavy rainfall with localized flash flooding
  across Ventura and Santa Barbara county mountains on this
afternoon and early evening...

A weak low pressure system spinning off the coast of Southern
California will bring some moisture and increasing instability
across the local mountains during the next few days resulting in a
threat of afternoon thunderstorms. The best moisture and instability
each afternoon and early evening is expected to be focused across
the mountains of Ventura and Santa Barbara mountains where there
will be the greatest thunderstorm threat. There will be the
potential for brief heavy rainfall with localized flash flooding
this afternoon and early evening across the mountains of Ventura and
Santa Barbara  counties due to increased available moisture and weak
upper level  steering flow, which will result in slow moving storms.
In addition, any thunderstorms that develop during this time will be
capable of  producing gusty and erratic downdraft winds along with
small hail.

Otherwise pretty quiet pattern next several days with typical
diurnally driven winds. Gradual cooling with increased marine layer
coverage is expected through early next week.


$$

ECC024-201030-
San Luis Obispo County-
Discussion for San Luis Obispo ECC Dispatch
930 AM PDT Sat Aug 19 2017

...Threat of afternoon thunderstorms across local mountains Today
through Tuesday...

...Potential for brief heavy rainfall with localized flash flooding
  across Ventura and Santa Barbara county mountains on this
afternoon and early evening...

A weak low pressure system spinning off the coast of Southern
California will bring some moisture and increasing instability
across the local mountains during the next few days resulting in a
threat of afternoon thunderstorms. The best moisture and instability
each afternoon and early evening is expected to be focused across
the mountains of Ventura and Santa Barbara mountains where there
will be the greatest thunderstorm threat. There will be the
potential for brief heavy rainfall with localized flash flooding
this afternoon and early evening across the mountains of Ventura and
Santa Barbara  counties due to increased available moisture and weak
upper level  steering flow, which will result in slow moving storms.
In addition, any thunderstorms that develop during this time will be
capable of  producing gusty and erratic downdraft winds along with
small hail.

Otherwise pretty quiet pattern next several days with typical
diurnally driven winds. Gradual cooling with increased marine layer
coverage is expected through early next week.


$$

ECC032-201030-
Ventura County excluding Los Padres National Forest-
Discussion for Ventura ECC Dispatch
930 AM PDT Sat Aug 19 2017

...Threat of afternoon thunderstorms across local mountains Today
through Tuesday...

...Potential for brief heavy rainfall with localized flash flooding
  across Ventura and Santa Barbara county mountains on this
afternoon and early evening...

A weak low pressure system spinning off the coast of Southern
California will bring some moisture and increasing instability
across the local mountains during the next few days resulting in a
threat of afternoon thunderstorms. The best moisture and instability
each afternoon and early evening is expected to be focused across
the mountains of Ventura and Santa Barbara mountains where there
will be the greatest thunderstorm threat. There will be the
potential for brief heavy rainfall with localized flash flooding
this afternoon and early evening across the mountains of Ventura and
Santa Barbara  counties due to increased available moisture and weak
upper level  steering flow, which will result in slow moving storms.
In addition, any thunderstorms that develop during this time will be
capable of  producing gusty and erratic downdraft winds along with
small hail.

Otherwise pretty quiet pattern next several days with typical
diurnally driven winds. Gradual cooling with increased marine layer
coverage is expected through early next week.


$$

ECC030-201030-
Los Angeles County excluding Angeles National Forest-
Discussion for Los Angeles ECC Dispatch
930 AM PDT Sat Aug 19 2017

...Threat of afternoon thunderstorms across local mountains Today
through Tuesday...

...Potential for brief heavy rainfall with localized flash flooding
  across Ventura and Santa Barbara county mountains on this
afternoon and early evening...

A weak low pressure system spinning off the coast of Southern
California will bring some moisture and increasing instability
across the local mountains during the next few days resulting in a
threat of afternoon thunderstorms. The best moisture and instability
each afternoon and early evening is expected to be focused across
the mountains of Ventura and Santa Barbara mountains where there
will be the greatest thunderstorm threat. There will be the
potential for brief heavy rainfall with localized flash flooding
this afternoon and early evening across the mountains of Ventura and
Santa Barbara  counties due to increased available moisture and weak
upper level  steering flow, which will result in slow moving storms.
In addition, any thunderstorms that develop during this time will be
capable of  producing gusty and erratic downdraft winds along with
small hail.

Otherwise pretty quiet pattern next several days with typical
diurnally driven winds. Gradual cooling with increased marine layer
coverage is expected through early next week.


$$



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