What's the difference between a yellow warning and a blue warning?

1. The difference between yellow warning and blue warning: definition

Yellow Early Warning: The yellow early warning signal of cold wave is an early warning signal made by the meteorological department before the arrival of cold wave through meteorological monitoring, reminding people to avoid cold wave and agriculture to minimize the losses caused by cold wave. Cold wave yellow warning signal is the second level of cold wave warning signal.

Blue early warning: the blue early warning signal of cold wave is an early warning signal made by meteorological department before the arrival of cold wave through meteorological monitoring, reminding people to avoid cold wave and agriculture to minimize the losses caused by cold wave. Cold wave blue warning signal is the first level of cold wave warning signal.

2. The difference between yellow warning and blue warning: standard

Yellow warning: within 24 hours, the minimum temperature will drop by more than 10℃, the minimum temperature is less than or equal to 4℃, and the average wind power on land can reach above 6. Or it has dropped above 10℃, the lowest temperature is less than or equal to 4℃, and the average wind force is above 6, and it may continue.

Blue warning: within 48 hours, the minimum temperature drops by more than 8℃, the minimum temperature is less than or equal to 4℃, and the average wind power on land reaches more than 5. Or it has dropped by more than 8℃, the lowest temperature is less than or equal to 4℃, and the average wind power reaches more than 5, which may continue.

Extended data:

Cold wave prevention measures:

1, personnel should pay attention to adding clothes to keep warm, and tropical crops and aquaculture varieties should take certain cold-proof and windproof measures;

2. Fasten doors and windows, hoardings, scaffolding, temporary structures and other structures that are easily blown by strong winds, and properly arrange outdoor items that are easily affected by cold waves and strong winds;

3. The ship should take shelter from the wind at the shelter, and notify outdoor operators such as high altitude and water to stop working;

4. Pay attention to the latest information about gale cooling reported by the media, so as to take further measures;

5. Be prepared for cold wave and windy weather in production.

References:

Baidu Encyclopedia-Yellow Warning

References:

Baidu Encyclopedia-Blue Warning