Tyrwhitt's dating of the A-text of Piers Ploughman in the year 1362 from the allusions in the Second Vision (Passus v, 10–20) to the “pestilences” and “this south-Westerne wynt on a Saterday at even,” which seem to refer to the plague of 1361 and to the terrific gale which swept southern England on January 15, 1362, has long gone unchallenged. Skeat accepted it without question when he edited the poem for the Early English Text Society in 1877. Tyrwhitt found records of the storm in the chronicles of Thorn, Walsingham, and Murimuth; Skeat added Fabyan, Hardyng, John of Bridlington, the Eulogium Historiarum, and others to the list. That these two scholars have established the reference in the early lines of Passus v is clear enough, but it does not follow from this that the poem was written in 1362. It must have been written some time after 1362. I shall endeavor to show in this paper that the Prologue and First Vision (Passus i-iv) were written as late as May, 1376.