The bay and the weather
On 3-4 June 1944, Maureen Sweeney - a twenty-one-year-old meteorological assistant at Blacksod Lighthouse, at the far south of the Mullet Peninsula across the bay from Doohoma - recorded a deep Atlantic depression that nobody else in the Allied network was positioned to see. The reading was relayed to Valentia, then to Eisenhower's headquarters at Southwick House. General Stagg used it to forecast the storm bearing down on the English Channel. Operation Overlord was pushed back twenty-four hours - from June 5th to June 6th. The seas on the 5th, historians later concluded, would likely have wrecked the landings. Maureen Sweeney lived to 99. The lighthouse where she worked still stands. The bay they share looks much as it did. The full story belongs to Belmullet; this end of the water is where you look across and understand why the lighthouse mattered.