The 1st Belorussian Front, to Konev's north, opened its attack on the German 9th Army from the Magnuszew and Puławy bridgeheads at 08:30, again commencing with a heavy bombardment. The 33rd and 69th Armies broke out of the Puławy bridgehead to a depth of , while the 5th Shock and 8th Guards Armies broke out of the Magnuszew bridgehead. The 2nd and 1st Guards Tank Armies were committed after them to exploit the breach. The 69th Army's progress from the Puławy bridgehead was especially successful, with the defending LVI Panzer Corps disintegrating after its line of retreat was cut off. Though the 9th Army conducted many local counter-attacks, they were all brushed aside; the 69th Army ruptured the last lines of defence and took Radom, while the 2nd Guards Tank Army moved on Sochaczew and the 1st Guards Tank Army was ordered to seize bridgeheads over the Pilica and attack towards Łódź. In the meantime, the 47th Army had crossed the Vistula and moved towards Warsaw from the north, while the 61st and 1st Polish Armies encircled the city from the south.