 Severe storms on 19 June interrupted the landing of supplies and destroyed the Omaha harbour.The repaired Arromanches harbour was able to receive around 6,000 tons of materiel daily and was in continuous use for the next ten months, but most shipments were brought in over the beaches until the port of Cherbourg was cleared of mines and obstructions on 16 July.Allied casualties on the first day were at least 10,000, with 4,414 confirmed dead.