Welsh Journals

A STORM BURST IN THE VALE OF NEATH AND ITS EFFECT. AN ACCOUNT PUT TOGETHER By F. T. HOWARD, M.A., F.G.S., FROM NOTES COLLECTED BY MR. NEALE AND Family. The accompanying map indicates the distribution of rainfall in the region under review on Wednesday, July 26th, 1916. About that date the weather conditions of these islands were normal; a small anti-cyclone which covered most of Ireland and Scotland on the 21St moved off towards the N.E., and was closely followed by an extension from the Azores anti-cyclone. As a result, the weather in most districts continued to be fine, warm, and dry. But during the movement of the small anti-cyclone away towards the North Sea, thundery conditions were set up, and storms occurred here and there, due to slight disturbances in the pressure, though, as a rule, characterised by little violence except in a few places on the 25th to 27th, and especially on the 26th. In South Wales, slight showers occurred during the week, accompanying thunderstorms, e.g., at Cardiff on the 27th, and the weather became more disturbed towards the close. The records collected by the Society for years past show the wide variation in the annual rainfall within its district, rising steadily from the coast inland, and reaching its highest limits usually about Aberdare and Glyncorrwg. Geographical features alone will not explain this variation; indeed, Dr. Mill has shown clearly that such air movements as cyclones and those associated with thunderstorms, which bring much rain