Key positions at National Weather Service offices across Texas are vacant, sowing doubt over the state’s ability to respond to natural disasters as rescuers comb through the flood-ravaged Hill Country.

NWS says Flash Flood Warnings were issued on July 3 and early July 4 in Central Texas, giving more than three hours of warning.

Texas forecasters issued a series of early-morning warnings about “life-threatening flooding” along the Guadalupe River.