What kinds of weather are there?

In meteorology, according to the length and content of the forecast, the weather forecast is divided into the following categories:

1 Short-term weather forecast: 0-3 hours weather forecast.

Short-term weather forecast: the weather forecast for the next three days (that is, within 72 hours).

Medium-range weather forecast: the weather forecast for the next 4- 10 days.

4. Long-term weather forecast: refers to the weather trend outlook for more than 10 days.

Special weather forecast: a weather forecast with targeted special forecast content, timeliness or scope.

Before the occurrence of severe weather system, meteorological stations at all levels should issue "news", "report", "alarm" and "emergency alarm" in time. ? "News" predicts that there will be a disastrous weather system affecting the area in two days, or it is difficult to determine whether it has a significant impact, but it is a threat to the area, so "news" can be released first, such as "Typhoon News". The Report predicts that there will be some disastrous weather in two days, which will have a certain impact on the region. Reports can be issued, such as "gale report" and "high temperature report". The date of "early warning" predicts that a certain disastrous weather system will affect the local area and cause great harm within two days, that is, issuing "early warning", such as "typhoon early warning", "rainstorm early warning" and "gale early warning". The date of "emergency warning" is predicted to be affected by typhoon within 24 hours, and the maximum wind force near the center reaches 12 or above, and a "typhoon emergency warning" is issued. For the impact of tropical depression, tropical storm and strong tropical storm within 24 hours, corresponding emergency warnings are also issued.