Sat, December 7, 2013 at 06:08:18 AM
National Preparedness Level: 1 (On a scale from 1 to 5)
Northern California Preparedness Level: 1 (On a scale from 1 to 5)
Southern California Preparedness Level: 2 (On a scale from 1 to 5)
Current National Situation: Initial attack activity was light last week with 158 new fires. 2 new large fires have been reported and 4 large fires have been contained.
Smaller, local fires are listed as they occur in Happening Now.
Fire locations are based on data provided by the National Interagency Fire Center and are subject to change.
Large Incident: A wildfire of 100 acres or more occuring in timber, or a wildfire of 300 acres or more occuring in grass/sage.
Sierra Weather Outlook:
Very cold, dry air will remain in place today with afternoon RH's dropping to 15-25% in most areas. More cold air will arrive with a rather wet weather system Friday afternoon in the north and spread southward overnight. Snow levels Friday will drop to around 1000 ft in the north and lower to around 500 ft during the day Friday. Snow is expected Friday night down to the valley floors in all inland areas, although in the southern Sacramento Valley it will most likely be mixed with rain. Snow levels in the southern areas will be more like 1000-1500 ft overnight Friday into Saturday.
Snow accumulations will vary considerably with some mountain areas likely to see some rather heavy accumulations. A foot to 18 inches will probably be rather common, although the snow will be powdery. In the lower elevations, including the northern Sacramento Valley, 2-4 inches is more likely, although locally deeper amounts are certainly possible.
Drier conditions will already be returning across North Ops Saturday as the system quickly moves east into the Great Basin. High pressure and moderating daytime temps will return beginning Sunday. Another period of very dry conditions will occur as NE/off shore winds develop early next week and remain in place through the mid week. Temperatures will be on an increasing trend, although overnight lows in the northern and eastern valleys in particular will remain very low (about -5 to 10 above) until rising somewhat (to around 20) next Wednesday or so.
Many thanks to the Fire Information Services for the updates!