The space weather service of the Finnish Meteorological Institute (FMI) reports that magnetic disturbance levels are high. According to FMI researcher Tiera Laitinen displays of the northern lights may be the most impressive of the season, while clear conditions are increasing the chances of observing them in Tuesday's night sky all the way down to the south coast.
A magnetic storm that began on the surface of the sun on Sunday spewed out a cloud of highly-charged particles which grazed the earth's magnetic field on Tuesday morning which then channeled the particles towards the polar regions.
"It shook the magnetic field to such an extent that large magnetic disturbances are being measured down here on the surface, too. Some of these particles from the sun leak into the earth's magnetic field, dive into the atmosphere and create the northern lights," explains Tiera Laitinen.
The magnetic storm now underway is unusually strong and the cloud of solar particles is exceptionally highly charged - this should mean bright northern lights over all of the country. It is possible, says Laitinen, that they will be the most spectacular of the season.