Beskrivelse

Minimum temperature lower than -7°C

Instruksjoner

A very dangerous weather situation when continues for several consecutive days. Endangered lives of people and animals, problems in thermal and electric power supply, road and river traffic problems, forestry damages, problems in civil engineering construction works and damages of other weather dependent sectors of economy.

Beskrivelse

Minimum temperature lower than -4°C above 1000 MSL lower than -10°C

Instruksjoner

The predicted minimum air temperatures are not uncommon but take the necessary measures of protection for outside activities. They are especially dangerous lakes of cold air for longer stay in them. Problems in thermal and electric power supply. Possible risk of freezing water pipes in the backyard and water installations. Unfavourable conditions for chronically sick, people under therapy and medical control or meteoropaths.