Official warnings
Weather warnings, explained
Each page says what the agency’s levels mean, in its own definitions, and lists every area where the warning is in force now, from the agency’s own warnings.
MeteoAlarm
MeteoAlarm puts the warnings of Europe’s national weather services (EUMETNET) on one map. Each warning is issued by the service of its country, for one of its areas, and MeteoAlarm shows it in one of three colours, the same in every country.
- Fog warnings in Europe
- Wind warnings in Europe· العربية
- Thunderstorm warnings in Europe· 日本語
- Rain warnings in Europe
- Rain-flood warnings in Europe
- Flood warnings in Europe
- Snow and ice warnings in Europe
- Low-temperature and frost warnings in Europe· 日本語
- Heat warnings in Europe
- Coastal event warnings
- Forest-fire danger warnings in Europe
- Avalanche warnings in Europe
Environment Canada
Environment and Climate Change Canada issues three kinds of weather alert. A warning: act now, severe weather is happening or will happen, usually 6 to 24 hours ahead (a tornado can come with less than 30 minutes’ notice). An advisory: act now, for weather less severe but still significant — blowing snow, fog, freezing drizzle and frost. A watch: get ready, the conditions favour severe weather, and it may become a warning. Each alert now also has a colour, for the impact expected where you are.
PAGASA
PAGASA, the weather service of the Philippines, warns of floods in two ways. For the major river basins with automatic gauges, its river centres issue flood bulletins against three water levels (alert, alarm and critical: 40, 60 and 100 % of a full river). For the river basins without them, it issues a General Flood Advisory whenever significant rain has been recorded or is forecast — from observations, weather models, satellites and radar — region by region through the NDRRMC, at 7:00 and 19:00.
Hong Kong Observatory
The Hong Kong Observatory issues the Fire Danger Warning on the weather — low humidity, strong wind — and on how dry the vegetation is, which the Agriculture, Fisheries and Conservation Department reports. The warning is broadcast on radio, television and the internet, and shown at the entrances of country parks and in front of fire stations.