lindsey janice, abc news, mountain center, california. unrelenting heat remains the top weather story this morning. yesterday every state in the lower 48 had at least one spot where it hit 90 or above. today be we ll much the same. with such high temperatures lasting so many days, it becomes particularly dangerous. not just for those that work outdoors. relief is just a speck on the horizon. in fact, the heat dome is getting even bigg this morning hearin advisories are in e 20 s cisories are in e 20 a high-pressure dome is stalled over the entire ohio valley. here s the rest of the story. pgup frohim th some of them are severe. this is along the canadian border to michigan. thunderstorms in south texas. heavy rain possible in new inico and ar 96 in dallas.