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wwus86 kmtr 230352

urgent - fire weather message
national weather service san francisco ca
852 pm pdt fri sep 22 2017

...fire weather watch for the north bay hills...

.a warming and drying trend will start saturday afternoon and
continue at least through monday. in addition to the warm
temperatures there will be lowering humidity values and periods
of gusty northeast winds across the north bay hills, especially
across the napa county hills and the hills of northern sonoma

north bay mountains-
852 pm pdt fri sep 22 2017

...fire weather watch remains in effect from saturday afternoon
through monday evening for low humidity and gusty winds for fire
weather zone 507...

* affected area...fire weather zone 507. the north bay hills 
  above 1000 feet in elevation. 

* wind...northeast winds 10 to 20 mph...gusts 25 mph. strongest 
  overnight and morning hours.

* humidity...lowering to around 15 percent afternoons with poor 
  recovery less than 30 percent overnight.

* highest threat...is located over the napa hills and around
  mount saint helena where winds will be strongest and humidity 
  lowest. downed powerlines in remote areas will likely cause 
  new fire starts. 

* impacts...any fires that develop will likely spread rapidly. 
  outdoor burning is not recommended.

precautionary/preparedness actions...

a fire weather watch means that critical fire weather conditions
are forecast to occur. listen for later forecasts and possible
red flag warnings.



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