Name day: Stefan, Roch
Sunrise 5:36 am; sunset 8:16 pm; average air temperature: 16°C
Fine weather; Vistula river level: 115 cm



          The Germans seize the Canoness Sisters Monastery at Theater Square. The Polish Security Printing Works on Sanguszki Street and the Old Town Market are also under heavy attack.

          The Old Town is for the first time bombarded with heavy shelling of 600 mm in diameter and attacked with the use of mine-throwers, the so-called "Roaring Cows", mortars and aerial bombs. All this shelling falls in the territory of the defense not exceeding 10 square km.

          The soldiers of the People's Army from the "Czwartaki" battalion carry out a daring sortie to the "Red House" on Rybaki Street. They pretend to attack the building from one direction and at the same time they plant several dozen unexploded "Roaring Cows" at the back of the building and set them off. The force of the explosion causes the building to partially collapse - many Germans die, the others flee.

          On the night of August 15 and 16, a large group of over 700 well-armed soldiers under the command of Lieutenant Colonel Ludwik Wiktor Konarski "Victor" moves from the Kampinos Forest to Powązki. However, during the night march some soldiers lose their way and retreat back to the Forest - the others reach Powązki and Żoliborz. However, eventually the unit decides not to launch an attack in the direction of the Old Town and retreats to Żoliborz. The "Zośka" and "Czaty 49" battalions carry out an assault from the Old Town, but their attack collapses near Stawki and Nalewki Streets.

          Around noon the German pioneers (explosive engineers) blow up a five-story tenement house on Przejazd Street with an insurgent outpost inside, probably with the use of little-known coal gas (Taifun-Gerät). Two friends, poets Tadeusz Gajcy "Topornicki" and Zbigniew Leon Stroiński lose their lives under the debris of the building.

          Three tanks are charging from the Mokotów Field along Polna Street on the positions of the Golski battalion. The insurgents damage one of the tanks.

          As the Germans seized the Water Filters Station, the Warsaw population is running out of fresh water. New wells and water intakes are being built in tenement backyards.