Heat advisories and extreme heat warnings are in effect west of Houston this week as an unusually early heat wave takes hold. What do these heat alerts mean?

HOUSTON — The heat is on in Houston, and it’s not going anywhere anytime soon. This week, temperatures are forecast to push into the upper 90s, with several days expected to challenge or break standing records. So the big question: Has Houston ever hit 100 degrees in May before?

The predicted highs throughout the week will hover between 92 and 94 degrees, but the "feels-like" temperatures may be in the triple-digits.