Corsica on yellow alert for “rain-flood”


Editorial on Thursday May 2, 2024 at 12:36

Météo France has placed the two departments of Corsica on yellow alert for the “rain-flood” parameter from Thursday, May 2, 8:00 p.m. to Friday, May 3, 6:00 a.m. at least.


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Météo France has issued a yellow level weather alert for “Rain floods” from Thursday, May 2, 8:00 p.m. to Friday, May 3, 6:00 a.m. at least.

The forecasts

Thursday May 2 morning, a stormy spell affected Corsica with occasional accumulations of around 10 mm. At midday, locally stormy showers still occurred on the island but without particular severity.
An intensification of precipitation is expected in the evening of Thursday and the following night with a blocking of the terrain in a westerly flow.
Friday May 3 at 6 a.m. the 24-hour accumulations reached 100 to 130 mm on the relief of the central range, locally generalized to 150 mm.
Temporarily the intensities will be significant with 10 to 15mm/h. Overflows in the eastern catchment areas are expected with a possible reaction from rivers. The rain-snow limit is quite low between 1500 and 1700 meters, which will attenuate the hydrological reactions with the highest accumulations in the form of snow. On the western foothills we expect 50-70mm. On the eastern foothills, 20-30 mm locally 50 mm. The western coast is on the margin with 10 to 20 mm. The eastern plain remains on the margins.
Note that the wind is also strengthening on the terrain with 90 to 110 km/h. No surge on the eastern façade expected. A few isolated lightning strikes may also occur. The precipitation stops at the end of the night and conditions become calm again.

The regional prefecture calls for caution when practicing activities sensitive to meteorological risk, or near a shore or a watercourse.

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