There is another level 1 warning, which applies, among other areas, to Bolesławiec County. As we read on the website of IMGW–PIB:
Thunderstorms are forecast, accompanied by rainfall of up to 25 mm, locally up to 40 mm, and wind gusts of up to 70 km/h. Hail in some areas.
Probability: 85%. The warning is valid on Monday, 12 July, from 8:00 a.m.–11:00 p.m..