The aftermath of a deadly storm continued to disrupt parts of France on Friday, with flooding concerns persisting in the southwest even as wind alerts were lifted, according to weather service Météo-France.

Government spokesperson Maud Bregeon said on TF1 that France had recorded two deaths linked to Storm Nils: one on Thursday in the Landes department and a second "in the last hours" in Tarn-et-Garonne.

She said the second victim was a man who was found in his garden.

Network operator Enedis said the storm left up to 900,000 customers without power at its peak; by Friday morning it had restored service to about half of those affected and mobilized 3,000 personnel, including 2,100 technicians.

Flood vigilance remained high. Météo-France maintained red flood alerts for Gironde and Lot-et-Garonne - to remain in place Saturday - due to a significant Garonne river flood episode.

Météo-France said the storm had "uncommon strength" and swept in from France's western seaboard overnight Wednesday into Thursday and has now moved on tracking east into Europe.