A low over the Bay of Biscay meant another day of no flying:
Log book entry
Date: 4.4.18 Remarks: Weather unfavourable.
The culprit was a low over the Bay of Biscay, giving rise to overcast and rainy skies:
Thursday 4 April 1918 – Weather Unfavourable
Don’t know whether you happened to catch this today on R4:
https://www.bbc.co.uk/programmes/b09xkd81
Mention of RE8s flying reconnaissance missions….
Missed it, but thanks very much for the link.