Honolulu stays warm and partly sunny Friday before stronger trade winds and higher rain chances arrive this weekend.

Wake County is among dozens of NC counties where the toxic weed thrives — and even skin contact can be dangerous.

UCLA and Caltech researchers say satellite radar caught aquifer damage equal to San Francisco's entire annual water use.

Las Vegas is facing a dangerous weekend of triple-digit heat, with highs reaching 113 degrees and an Extreme Heat Warning in effect.

A first-in-17-years petition could end mandatory habitat fees for developers, but scientists warn the hawk is still missing from Southern California.

Sacramento faces a Heat Advisory and a weekend of triple-digit temperatures, peaking near 104 degrees Sunday. Warm nights will provide limited relief.

Federal officials say a cold-water flush that once blocked invasive bass would have cost ratepayers millions this year.

Phoenix is heading into a dangerous weekend, with highs reaching 112 degrees before storm chances increase next week.

New Orleans gets a clear start Friday before afternoon storms return. Heat-index readings could reach 105°F this weekend.

San Jose will heat up from the upper 80s into the mid-90s this weekend as a Heat Advisory takes effect Saturday.

Austin faces a hot, mostly dry stretch with highs near 99 degrees and heat-index values up to 107. Triple-digit temperatures return next week.

San Francisco warms to 77 degrees this weekend, but evening tides could flood low-lying bayshore roads, parks and trails through Thursday morning.

Nashville will climb toward 95 degrees Friday, with the heat index reaching 103 before scattered afternoon storms arrive.