Trump’s effort to end birthright citizenship will face steep legal challenges. It would require a constitutional amendment, ...

A La Niña winter just started, but it isn't expected to last long. National forecasters are already looking ahead to the ...

Arizona is expecting one of its driest starts to winter with impacts that could impact water supply later this year.

The NOAA Gulfstream IV features a GPS dropwindsonde, a tube-shaped instrument released from the bottom of the aircraft. This ...

Dry weather and cold temperatures are settling in across Arizona, with freeze warnings in effect for high terrain and lower ...

A La Niña winter just started, but it isn't expected to last long. National forecasters are already looking ahead to the ...