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Météo-France refines the alert at the sub-departmental scale
Automatically translated from French ·
Published on Friday, October 2, 2026 at 1:08 PM
# Météo-France refines alert level at the sub-departmental scale Updated on 02/10/2026 Since the 2026 school year, Météo-France has evolved its alert system to better localize certain dangerous weather phenomena within the same department. For **wind, freezing rain, rainfall-flooding, and thunderstorms**, a sub-departmental graphical representation may now be provided when forecasts allow. The affected areas will be shown as
Météo-France refines alert level at the sub-departmental scale
Updated on 02/10/2026
Since the 2026 school year, Météo-France has updated its alert system to better localize certain dangerous weather phenomena within the same department.
For wind, freezing rain, rain-induced flooding, and thunderstorms, a sub-departmental graphical representation may now be provided when forecasts allow. The affected areas will be defined according to the expected extent of the phenomenon and will therefore not necessarily follow administrative boundaries.
In practice, several alert levels may appear within the same department. A transition zone, shown as a gradient between two colors, will also account for uncertainty regarding the exact location of the phenomenon.
The overall alert map will continue to display the maximum danger level across the entire department. To find out more precisely which areas are affected, consult the dedicated map for the specific meteorological phenomenon.
This new display will only be used when the Météo-France forecaster considers the situation sufficiently predictable. It should therefore be offered more frequently on the "today" map than on the "tomorrow" map, as the forecast can be refined closer to the event.
This change should enable a better assessment of the territorial impacts of dangerous phenomena and allow for more precise local anticipation. However, Météo-France's follow-up bulletins remain essential to understand the intensity, timing, and exact location of the event.
The prefecture's services analyze the maps provided by Météo France in order to issue alerts to services and local authorities, which then relay the level of vigilance and recommended behaviors.
More information on the [Météo-France Vigilance website](https://meteofrance.com/actualites/meteo-france-renforce-linformation-infra-departementale-de-la-vigilance-meteorologique "Visit the https://meteofrance.com/actualites/meteo-france-renforce-linformation-infra-departementale-de-la-vigilance-meteorologique website - new window")
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