The exact timing of the CME’s arrival and how much of a geomagnetic storm will be produced remains to be seen.

The Kp index is a scale from 0 to 9 used to measure geomagnetic activity. The higher the number, the more likely auroras are ...

A geomagnetic storm could spark some impressive auroras in the night sky over parts of the U.S. overnight Thursday into ...

Statistically speaking, the kind of temperatures the Southwest is experiencing right now would be nearly impossible without ...

According to NOAA, auroras could begin appearing as early as 11:00 p.m. ET on Aug. 7 with moderate G2 geomagnetic storms ...

Several states, primarily along the northern border, may have the chance to see the northern lights on Thursday. A coronal mass ejection, or CME, was hurled out by the sun on Tuesday, NOAA’s Space ...

A solar storm is forecast for Aug. 7 and 8, creating favorable conditions for the northern lights. Here's where the northern lights may be visible.

As high pressure ridging to the south builds in Thursday night into Friday, temperatures will climb even higher across the ...

Storms will develop in North Dakota and roar into Minnesota in the first round, while an intense line could track along I-94 late Friday.

SIOUX CITY (KTIV) - Tuesday was warm, but shy of the heat expected. Highs topped out in the middle 80s with partly cloudy ...

We’re starting off this morning with temperatures in the 60s to 70s. Expect mostly to partly cloudy and hazy skies today, ...