Temperatures in Southern Finland may on Tuesday tumble by as much as 20 degrees Celsius from today's levels as a cold front tracks across the country, says Ilona Láng, a meteorologist at Helsingin Sanomat. “Already on Monday, the air mass cooled off notably in northern and central parts of the country, and temperatures remained between 10 and 15 degrees,” she says.
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“A northern cold front will push toward the south. By Tuesday, temperatures will fall by nearly 20 degrees,” she forecasts. An area of low pressure is forecast to linger over Southern and Central Finland for several days.