Several forest fires raged in the county on Wednesday and also on Thursday there were alarms about several fires along the railway in the county.
Now the risk increases as the heat establishes itself in the northern part of the country.
It will be relevant with a fire ban in Västerbotten's inland municipalities.
- We have not had the discussion yet, but it may be relevant, says Lasse Rydstedt.
In Grannäs in Sorsele, a forest fire of 10 hectares was water-bombed on Wednesday.
In Nordmaling municipality, several minor fires were fought along the railway.
On Thursday, they got hot again near Norrfors when a new fire started on the same stretch along the rails.
Spreads quickly
It is the top surface layer of the soil that is dry.
This means that you can easily get an ignition and a fast spread.
Christer Björkman, rescue chief on standby in Umeå, says that the fire aircraft now runs once a day to look for fires.
- If the risk becomes even higher, we will fly twice a day, he says.
High fire risk in the mountains means that firefighting will patrol Norrbotten and Västerbotten.
See more in the clip where we join in on firefighting work along the rails at Norrfors.