A lightning flash that is longer than 60 miles is considered a megaflash. Researchers first discovered them using new ...

Scientists July 31 announced the discovery of the world's longest lightning flash ever detected – a whopping 515-mile-long ...

Millions of Americans are bracing for a potentially deadly heat wave this week, with forecasters warning that temperatures ...

Learn more about the latest Phoenix area weather forecast and conditions with Most Accurate Forecast from ABC15.

Learn more about the latest Phoenix area weather forecast and conditions with Most Accurate Forecast from ABC15.

Storms will begin south and east of the city of Tucson again this afternoon, eventually bringing isolated thunderstorms for some in the Tucson area. Thursday looks to be the most active day with the ...

A new world record for the longest distance lightning flash was declared on Thursday - a megaflash that stretched for 829 ...

There has been plenty of heat and sunlight this month. Often, July will bring a big ridge of high pressure that sits over our ...

The BriefHot and dry weather is expected to continue on Wednesday in the Valley.The high on July 30 in Phoenix will be about 111°F.This weekend will be even warmer, with a high of about 113°F on ...

The National Weather Service in Tucson has issued a * Flash Flood Warning for... East Central Pima County in southeastern Arizona... * Until 900 PM MST. * At 607 PM MST, Doppler radar indicated ...