Southern California Fire Weather Discusssion

Sunday, December 9, 2012

Southern California Fire Weather Discusssion

Issued: Today, Sunday, December 09, 2012
Valid For: Valid For: Monday

So Cal Red Flag Warnings

WEATHER DISCUSSION:
Gusty offshore winds and low humidity tonight through Tuesday morning in southern California***
A trough over the northern Rockies will quickly drop southward into northern Arizona and New Mexico by this evening. At the same time, surface high pressure will build into Utah which will allow gusty north to east winds to develop below the canyons and passes of southern California tonight through early Tuesday.

Winds: The strongest winds will occur Monday morning with sustained speeds of 15-25 mph along
with gusts into the 40s in the more wind prone areas such as the Santa Clarita Valley, the Cajon Pass, the Beaumont/Banning Pass, and portions of the Cleveland National Forest. Also, northerly winds of 15-30 mph will occur across the Lower Colorado River Valley this afternoon and evening. The winds will diminish by Monday afternoon before increasing again Tuesday morning, although winds will be weaker as compared to Monday morning. Weak onshore flow will return to some of the coastal areas by Tuesday afternoon.

Relative Humidity: Humidity values will drop into the teens Monday and Tuesday over much of southern California with poor recovery Monday night.

Temps: Temperatures will be near normal today and Monday, climbing to above normal levels briefly on Tuesday with valley highs in the 70s.

Rain & Snow: On Wednesday a cold upper trough will drop into the region with widespread wetting rains developing over the area later Wednesday into Thursday. At this time rainfall amounts will likely be between 1/2 and 1 inch across all but the desert areas with snow levels dropping to near 4,000 feet on Thursday.

EXTENDED OUTLOOK: Cool but dry weather will follow Friday and Saturday.
Tuesday through Saturday:
Coast and Coastal Valleys - Breezy in the morning with low RH Tuesday over southern California.
Inland Valleys and Surrounding Foothills - Breezy in the morning with low RH Tuesday over southern California.
Mountains (Excluding the Sierra Range) - Breezy in the morning with low RH Tuesday over southern California.
Sierras - No significant fire weather expected.
Deserts - No significant fire weather expected.

CFN - California Fire News 2012

1 comment:

UnknownSaturday, December 15, 2012 7:52:00 PM

Thanks for the great post on your blog, it really gives me an insight on this topic.
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Every year in California thousands of wildfires start throughout the state. In most cases, the dispatch center sending the initial resources to a wildland fire will designate a name for the fire, but the first on scene engine or fire official can also name the incident. Fires are usually named for the area in which they start – a geographical location, local landmark, street, lake, mountain, peak, etc. Quickly naming the fire provides responding fire resources with an additional locater, and allows fire officials to track and prioritize incidents by name. For example during the Southern California Fire Siege of 2003, the largest wildland fire in California history, the Cedar Fire in San Diego County, was named after the Cedar Creek Falls area where it started. The destructive Old Fire, which burned during the same time period in San Bernardino County, was named after the road along which it started - Old Waterman Canyon Road.

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Sunday, December 9, 2012