Attribution researches the influence of climate change on local weather and impacts. We issues alerts in many instances when the Climate Shift Index identifies a notable extreme weather event around ...

Discussion about climate classifications usually revolves around geographic location at a broad scale. One of the most popular climate classification systems, the Köppen system, divides earth into ...

It's no secret that Phoenix is hot, but late summer and the start of fall were scorchers, even by Valley of the Sun standards. Between Sept. 23 and Oct. 14, Phoenix set daily record high temperatures ...

With rising temperatures, the atmosphere can hold more moisture, meaning precipitation has a tendency to fall at more extreme levels. By Christina Kelso The severe storm system that has inundated the ...