National Weather Service United States Department of Commerce

Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Dangerous heat and humidity will continue for most locations through at least Saturday. A cold front will slowly move through the area Sunday/Sunday night. There are timing differences with this front, so exact high temperatures and heat index values are less certain Sunday. By Monday, look for more typical mid August temperatures and humidity levels behind the front.
A stalled cold front will continue to serve as the focus for additional rounds of showers and thunderstorms through Saturday. Much of this focus will be across Iowa and northern Illinois, but a few storms may clip parts of northeast Missouri and west-central Illinois this evening and/or Saturday. Damaging winds are the main threat in addition to very heavy downpours if these storms impact our region.