1. West Pacific Typhoon/Hurricane VongFong
At 12Z/6 a.m. PDT on Oct. 10th, Fri., the West Pacific hurricane VongFong has a central pressure of 937mb and winds at 115kts with Gusts to 140kts. Although the U.S. Navy forecasts that it is weakening, it is still very powerful and could potentially damage the cities in its path over the next 48hrs., before degrading to a tropic storm.
Upper-left: Historical and forecast tracks of VongFong by the U.S. Navy on Oct. 10th, 12Z/6 a.m. PDT. The shaded area indicates the potential forecast tracks.
Upper-middle: Infrared satellite image (associated with temperatures of cloud tops) of VongFong at 12Z/6 a.m. PDT on Oct. 10th
Upper-right: vapor satellite image (associated with amount of water vapor in the atmosphere) of VongFong at 12Z/6 a.m. PDT on Oct. 10th

2. More about VongFong: Present v.s. the Peak
Upper-left: Visible satellite image (associated with clouds) of VongFong at 6Z on Oct. 10th, Fri. (11 p.m. PDT on Oct. 9th, Thurs.)
Upper-right: Visible and infrared satellite image of VongFong at 18Z on Oct. 7th, Tues. (11 a.m. PDT on Oct. 7th)
On Oct.7th, VongFong had a clear storm eye with the central pressure of 907mb and winds at 155kts.

3. Graphs of Last 7 days in Oakland, Northern California
The graphs show the decreasing temperatures and increasing relative humidity recorded in last 7 days by a Remote Automatic Weather Station (RAWS), which is located at 500ft above the mean sea-level, in Oakland, Northern California.

4. Red Flag Warning from Sat. Night to Mon. Morning
TIMING: STARTING AROUND 11 PM SATURDAY NIGHT THROUGH 5 AM MONDAY MORNING.
PERIOD OF STRONGEST WINDS WILL BE SUNDAY MORNING.
WIND: NORTH TO NORTHEAST WINDS 10 TO 20 MPH WITH FREQUENT GUSTS FROM 30 TO 40 MPH OVER THE RIDGES ABOVE 1500 FEET.
STRONGEST ALONG THE NAPA AND YOLO COUNTY LINE.
HUMIDITY: STARTING AROUND 45% SATURDAY NIGHT THEN LOWERING 8-18% ALL AREAS BY SUNDAY AFTERNOON WITH LITTLE OR NO RECOVERY SUNDAY NIGHT.
IMPACTS: WINDS MAY BRING DOWN POWER LINES OR SMALL BRANCHES WHICH COULD LEAD TO NEW FIRE STARTS. IN ADDITION ANY FIRES THAT START WILL LIKELY GROW QUICKLY DUE TO THE FORECAST WINDS...HIGH TEMPERATURES AND LOW HUMIDITY ALONG WITH THE LONG TERM DROUGHT CONDITIONS ACROSS THE REGION.
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY.
The graphs and warning text are provided by National Weather Service.