The grass fire broke out before 2 p.m., according to the Napa Valley Register.
Smoke is rising from a grassfire in the Coombsville area east of Napa.
The reports the fire broke out before 2 p.m. in the area of Coombsville Road and Jacks Lane and officials were preparing to evacuate residents if necessary.
For all the latest fire coverage, please see our Fire Watch topic page at napa.patch.com/topics/Fire-Watch.
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