Two American fighter jets are carrying out combat training in the skies above Stamford and Peterborough today (7 October).
The F-15 Eagles from the 493s Fighter Squadron USAF are based at RAF Lakenheath.
They would normally practise their basic fighting manoeuvres over the sea, but due to the poor weather they are instead flying inland.
An RAF spokesman said the planes would be in the area for two to three days and would not be flying below 4,000ft.
The spokesman said the planes may seem lower, but that was due to their size. They have a wingspan of 42ft and are 63ft 9in long.
The F-15s will not be landing at RAF Wittering.