At least one New Yorker was killed Sunday night when “tidal-wave”-like floodwaters swept her away in a devastating rainstorm that pummeled parts of the Hudson Valley and wreaked havoc on roads and homes across the region. Gov. Kathy Hochul declared a State of Emergency for Orange County and Ontario County Sunday night, stating that the counties “experienced life-threatening flooding over the past few hours” — totaling about eight inches of rain by 10 p.m.