San Antonio officials said the city won't open overnight warming centers during the cold front now gripping the area, even though temperatures will dip below freezing several times this week. That decision hits the city's unhoused population particularly hard, especially as those individuals are already contending with overflowing shelters and daily encampment sweeps. City Manager Erik Walsh illuminated San Antonio's official plan of action in an email he distributed over the weekend to Mayor Nirenberg and City Council.