# Real-Time Weather Alerts & Rainfall Information

This page connects live to the Central Weather Administration's (CWA) 5 major alert types and station database, providing real-time land strong-wind, dense-fog, heavy-rain, and typhoon-track warnings plus live observations from rainfall stations nationwide.

## 中央氣象署降雨特報分級標準對照表

| 警報分級 | 24小時累積雨量 | 3小時累積雨量 | 代表燈號 | 防災因應指引 |
| --- | --- | --- | --- | --- |
| 大雨 (Heavy Rain) | ≥ 80 mm | 或 ≥ 40 mm | 黃色 🟡 | 低窪地區慎防積淹水，山區防落石 |
| 豪雨 (Extremely Heavy Rain) | ≥ 200 mm | 或 ≥ 100 mm | 橘色 🟠 | 防範淹水、土石流與溪水暴漲 |
| 大豪雨 (Torrential Rain) | ≥ 350 mm | 或 ≥ 200 mm | 紅色 🔴 | 高度危險，避免進入山區或溪流活動 |
| 超大豪雨 (Extremely Torrential Rain) | ≥ 500 mm | — | 紫色 🟣 | 重大致災降雨，配合預警性撤離與避難 |

## Medical Information Disclaimer

The calculations, classifications, and lifestyle suggestions this tool provides are for general wellness and self-assessment reference only, and cannot replace a qualified physician's clinical diagnosis, treatment plan, or prescription advice. If experiencing any physical discomfort or health concern, seek professional help from a licensed medical institution and specialist immediately.

## Frequently Asked Questions (FAQ)

### How often are weather alerts updated?

This site's weather-alert data automatically syncs every 5-10 minutes with the Central Weather Administration's latest CAP alerts, typhoon bulletins, and township-level hazard advisories.

### How do I find the nearest rainfall station to my location?

Once browser GPS permission is granted, the system automatically compares against 1,300+ rainfall stations nationwide, calculates the shortest distance, and shows that station's 10-minute, 1-hour, and 24-hour cumulative rainfall; you can also manually pick a county/district instead.

### What are the grading standards for heavy rain vs. torrential rain?

Per CWA standards: Heavy Rain is a 24-hour accumulation of ≥80mm or a 3-hour accumulation of ≥40mm; Extremely Heavy Rain is 24-hour ≥200mm or 3-hour ≥100mm; Torrential Rain is 24-hour ≥350mm or 3-hour ≥200mm; Extremely Torrential Rain is 24-hour ≥500mm.

## Related Pages
- [Taiwan Real-Time Air Quality Index (AQI)](https://health.j172.tw/en/tools/aqi)
- [Taiwan Real-Time UV Index](https://health.j172.tw/en/tools/uv)
- [全球動態地球](https://health.j172.tw/tools/global-watch)
- [飲水量計算器](https://health.j172.tw/tools/water)

## Data Sources
- [氣象警報與豪大雨特報作業標準](https://www.cwa.gov.tw): 交通部中央氣象署 (CWA)
- [災害防救應變作業指引與防汛須知](https://www.nfa.gov.tw): 內政部消防署