According to the Guide to Meteorological Disaster Prevention and Avoidance, primary and secondary schools should suspend classes when warning signals are hoisted.

2. Rainstorm is a red warning.

Blizzard is a yellow warning

4. Hail is an orange warning

typhoon warning

According to the different approaching time and intensity, the typhoon warning signal is divided into four levels, which are represented by blue, yellow, orange and red respectively.

Color: yellow

Meaning: It may be affected by tropical storms within 24 hours, with an average wind force of more than 8 or a gust of more than 9; Or it has been affected by tropical storms, with an average wind force of 8 ~ 9, or a gust of 9 ~ 10 and may continue.

Defense guide:

1. Kindergartens and nurseries are advised to suspend classes;

2. Residents and ships in dangerous areas and dangerous houses should take shelter from the wind, and outdoor workers should stop working;

3, cut off neon lights and dangerous outdoor power supply;

4. Stop open-air collective activities; Other typhoon blue warning signals.

Rainstorm warning

There are three kinds of signals: yellow, orange and red.

Color: red

Meaning: The rainfall in 3 hours will reach 100 mm or above, or it has already reached 100 mm and the rainfall may continue.

Defense guide:

1, outdoor personnel should immediately take temporary refuge in a safe place;

2. Relevant emergency departments and emergency rescue units are ready to start emergency rescue plans at any time;

3. Schools, kindergartens and other relevant units with students and employees should take special protective measures, and units in dangerous areas should suspend classes or suspend business and immediately move to safe places for temporary refuge; Other same as above.

Hail warning

The signal is divided into two levels, which are represented by orange and red respectively.

Color: orange

Meaning: There may be hail with lightning weather within 6 hours, and it may cause hail disaster.

Defense guide:

1, pay attention to the weather change, and prepare for hail suppression and lightning protection;

2, proper placement of outdoor items, cars, etc. , vulnerable to hail;

3. Old people and children should not go out and stay at home;

4. Drive poultry and livestock to a safe place with a canopy;

5. Don't enter isolated shacks, sentry boxes and other buildings or under big trees, and turn off your mobile phone when there is lightning;

6. Prepare for artificial hail suppression and wait for the opportunity to implement artificial hail suppression.