How is the intensity of hurricane season measured?

Accumulated cyclone energy, or ACE, measures the strength of hurricanes and tropical storms over their duration, allowing meteorologists to compare different storms and seasons.

Storms to batter northwestern US with rain, mountain snow through this weekend

October 19, 2017, 6:52:52 AM EDT

Following a quiet start to the week, damp and unsettled weather that swept back into the Pacific Northwest at midweek will stick around through the weekend.

Storm Brian to bring rain, wind to Ireland and UK on the heels of Ophelia

October 19, 2017, 9:23:30 AM EDT

While some locations continue rebuild after Ophelia, Brian will target the British Isles with wind and rain into Saturday.

Tips on how you can capture extraordinary photos during the 'golden hour'

Lighting can make the difference between an average image and a breathtaking and eye-catching photo.

Rain, colder air to slice through unseasonable warmth permeating northeastern US next week

October 19, 2017, 11:10:04 AM EDT

The stretch of sunny, mild weather enveloping the northeastern United States will come to end early next week as rain and much cooler air returns.

Now is the time to protect yourself from the flu

October 18, 2017, 8:28:49 AM EDT

Experts won’t make specific predictions about the upcoming influenza season because the severity of the season varies from year to year, but they do suggest flu shots and simple, preventative measures to keep illness at bay.

Europe winter forecast: UK to Germany on alert for wind storms; Rain to ease drought, wildfires in Spain and Portugal

October 18, 2017, 8:03:46 AM EDT

Winter will start with a bang across parts of northern and western Europe as frequent storms bring disruptive rain and wind.

Orionid meteor shower: Friday night to bring excellent viewing conditions in eastern US

October 19, 2017, 10:37:45 AM EDT

One of the best meteor showers of the fall will peak on Friday night with over a dozen meteors streaking across the night sky every hour.

Tropical downpours to threaten Diwali festivities across eastern India

October 19, 2017, 1:03:16 AM EDT

A monsoon low moving northward from the Bay of Bengal this week will pose potential impacts to eastern India, Bangladesh and western Myanmar.