Book to read after watching Twisters

Heeey, I'm looking for a disaster type, adventure, action while there's a romance subplot, where they need to survive and are "on the run". A found family is a plus. And it has to have romance, preferable if they didn't know each other beforehand. Like giving vibes of the war of worlds, quiet place, not necesary an alien invasion, just something is happening that they have to be in this situations where it's high stakes, live or die. Thankss