We regret to inform you that owing to flooding and road block,we failed to make shipment before the latest shipment date
Such being the case, we he to ask you to extend the L/C, under advice to us.
Please understand this matter is beyond our control.
We would appreciate your kind cooperation in settling this matter.
I am sorry to tell you that we can not ship the goods to you on time because of the floods that he lead to the transportation disconnection, and we can not catch the latest delivery time. I really appreciate that you can amend your LC.