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Ground frost

Ground frost forms when the temperature near the ground (measured 5 cm above the ground) drops to freezing point or lower. When this happens, frost can cause particular types of damage in agriculture and forestry. At 2 m above sea level, ground frost can also occur when the air temperature is above 0°C.

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Swiss federal authoritiesSwiss federal authorities

Between 15 March and 31 October, MeteoSwiss issues ground frost hazard warnings for low altitudes (below 600 m). During the six winter months, when ground frost is not unusual, no warnings are issued.