The issuing authority comes first
Forecast models describe possible weather conditions. Official meteorological agencies assess weather and potential impacts, then issue warnings through their own systems. Weather Alert Map displays those messages from connected sources. It does not issue government warnings, replace emergency services, or turn forecast thresholds into official alerts.
A message is a snapshot
The U.S. warning feed is refreshed on demand through a two-minute cache. European warnings use a separate provider and can arrive with a delay. The page shows when information was fetched, alongside the source’s own message timestamps. A successful fetch does not mean that the underlying forecast model or warning was just updated.
Know what is missing
Coverage depends on which providers are connected. An unavailable feed is different from a successful feed with no alerts. Some warnings describe administrative areas without a precise polygon; these still appear in the list. If a map looks quiet, read the coverage note, open the warning list and check the relevant national weather service.
Why a forecast and a warning can disagree
A city forecast on this site is model output from Open-Meteo: temperature, wind, precipitation chance and similar fields for a point. A warning is a message written by a meteorological service for an area and a time window. The model can show rain while no warning is in effect, and a warning can be in effect while the point forecast still looks ordinary. Use the warning text for official impact statements and the forecast for a general outlook.
What “last checked” means
Last checked is when this website successfully retrieved a feed, not when the forecast model ran and not when a forecaster issued the message. U.S. warnings are cached for about two minutes. European warnings are cached for about ten minutes and can already be delayed by the source. If you need the current official status, use the source link on the warning page. A saved alert page can remain online after the warning expires; the page states that it is no longer current.
Sources and further reading
Official National Weather Service reference. Source checked September 28, 2026. This general guide does not replace a current warning or advice from local authorities.
Check current warnings
Explore related live official warnings, or search your location for a forecast.