Great Fire of London able to tread on them." The cathedral was quickly a ruin. During the day, the flames began to move eastward from the neighbourhood of Pudding Lane, straight against the prevailing east wind and towards Pepys's home on Seething Lane and the Tower of London with its gunpowder stores. The garrison at the Tower took matters into their own hands after waiting all day for requested help from James's official firemen who were busy in the west. They created firebreaks by blowing up houses on a large scale in the vicinity, halting the advance of the fire. In a letter to
Great Fire of London to inspect the scene. He found that houses were still not being pulled down, in spite of Bloodworth's assurances to Pepys, and daringly overrode the authority of Bloodworth to order wholesale demolitions west of the fire zone. The delay rendered these measures largely futile, as the fire was already out of control. By Sunday afternoon, 18 hours after the alarm was raised in Pudding Lane, the fire had become a raging firestorm that created its own weather. A tremendous uprush of hot air above the flames was driven by the chimney effect wherever constrictions narrowed the air current, such as