Weather Articles

Outbreak of Severe Thunderstorms Expected Saturday in Parts of the Plains, Ozarks, Mississippi Valley and Ohio Valley

May 26, 2017

Parts of the Memorial Day weekend's weather will be dangerous for some.

Missing Fishermen Identified as Search Continues off Georgia Coast

May 26, 2017

The Miss Debbie, a 47-foot fishing boat, was located but its crew has not been found.

Memorial Day Weekend Forecast: Stormy Weather Possible in Central and East, Warm and Dry in the West

By Chris Dolce
May 26, 2017

Here are the weather conditions travelers will face during the Memorial Day weekend.

Here's Why Clouds Sometimes Resemble Jellyfish

By Brian Donegan
May 25, 2017

"Jellyfish clouds" caught the eyes of sky-gazers Wednesday in Southern California. Here's how they form.

Here's a Fascinating New Way to Define the Seasons

By Brian Donegan
May 25, 2017

Astronomical summer, meteorological summer and now this?

NOAA Predicts Above-Average 2017 Atlantic Hurricane Season

By Jon Erdman
May 25, 2017

The latest hurricane season forecast released in May calls for above-average activity in the Atlantic.

Damage Reported in Georgia, Carolinas as Another Round of Severe Weather Batters Southeast

By Ada Carr and Sean Breslin
May 25, 2017

For the second time in as many days, severe storms left damage in parts of the South.

Deadly Chetek Tornado Was Wisconsin's Longest on Record

By Jon Erdman
May 25, 2017

Assisted by a drone, the NWS found tornado damage for almost 100 miles.

Strong to Severe Thunderstorms With Hail, Damaging Winds Possible in the East Thursday

May 24, 2017

Thursday could be an active weather day in parts of the mid-Atlantic region.

Downburst Causes Damage, Closes Key U.S. Border Bridge in Laredo, Texas

By Associated Press
May 24, 2017

Traffic was suspended indefinitely following the damaging storm.

Svalbard 'Doomsday' Seed Vault to Be Upgraded After Entryway Flooded by Permafrost Melt

By Sean Breslin
May 24, 2017

The announcement comes just days after it was revealed the vault partially flooded because of melting permafrost.

Denver's Early-May Hailstorm May Be Most Expensive in State History

By Associated Press
May 24, 2017

If the price tag is finalized, it would be the costliest hailstorm in Colorado history.

Severe Thunderstorms With Damaging Winds, Tornadoes, Possible in Florida and the Southeast Wednesday

By Brian Donegan
May 24, 2017

Wednesday may be a dangerous day in parts of Florida.

No, This Isn't a Hurricane Off the California Coast

By Brian Donegan
May 24, 2017

You may be surprised to learn what's causing the swirls in these clouds.

Melting Snowpack Poses Dangers in the Sierra Nevada This Week

By Chris Dolce
May 23, 2017

An uptick in the melting of this season's snowpack in the Sierra Nevada will pose several dangers.

Monster 64-Foot Wave Measured by New Buoy in Southern Ocean

By Jonathan Belles
May 23, 2017

A monster 64-foot wave was recently measured in the Southern Ocean by a MetOcean buoy.

Strange Tornado Paths: They Don't Always Move in the Direction You'd Think

By Chris Dolce
May 23, 2017

Atmospheric factors can sometimes make tornadoes take some odd twists and turns.

How to Make Cloud Eggs, the Latest Weather-Themed Food Fad

By Sean Breslin
May 22, 2017

Here's how you can make the latest weather-themed food craze.

4 Things to Know About This Week's Weather Pattern Change

By Linda Lam
May 22, 2017

Another change in the upper-level pattern is ahead this week.

Watches Issued as Severe Storms, Flash Flooding Slide East Into the Mississippi, Ohio Valleys

By Brian Donegan
May 20, 2017

The risk of severe storms and heavy rain finally pushes east this weekend.

Featured Blogs

Meteorology of Saturday's Colombian Flood Disaster That Killed 254

By Dr. Jeff Masters
April 3, 2017

At least 254 people were killed in the in the city of Mocoa (population 40,000) in southwest Colombia near the border of Ecuador early Saturday, when torrential rains triggered a debris flow on a nearby mountain that surged into the town as a huge wall of water carrying tons of mud and debris. The disaster is the fourth deadliest weather-related disaster in Colombia’s recorded history.

Iconic American Destination Virtually Isolated for Rest of Year

By Christopher C. Burt
March 24, 2017

Half of the village of Big Sur, on the coast of central California, has lost its only access to the north following the demolition of the flood-damaged Pfeiffer Canyon Bridge along State Route 1 (also Rt. 1 or SR 1) on March 19. Although Rt. 1 to the south of Big Sur has reopened to traffic (after mud and rock slides were cleared) it is a long 70-mile journey along the windy but spectacular highway to Cambria, the next town of any significance where supplies can be had. CalTrans (California Department of Transportation) estimates it will take 6-9 months to rebuild a new bridge over the canyon.

An extraordinary meteorological event; was one of its results a 1000-year flood?

By Stu Ostro
October 5, 2015

The confluence of meteorological ingredients the first weekend in October 2015 resulted in an extraordinary weather event with severe impacts. Was one of them a 1000-year flood?

Why the Arrest of a Science-Loving 14-year-old Matters

By Shaun Tanner
September 16, 2015

By now, many of you have heard or read about the arrest of Ahmed Mohamed, a 14-year-old high school student from Irving, Texas. Ahmed was arrested because school officials called the police after he showed one of his teachers his homemade clock. Mistaken for a bomb, Ahmed was taken into custody, interrogated, shamed, suspended (still on suspension today, Wednesday), and reprimanded. All of this after it has been found that the "device" he brought to school was indeed, a homemade clock.

2013-14 - An Interesting Winter From A to Z

By Tom Niziol
May 15, 2014

It was a very interesting winter across a good part of the nation from the Rockies through the Plains to the Northeast. Let's break down the most significant winter storms on a month by month basis.

What the 5th IPCC Assessment Doesn't Include

By
September 27, 2013

Melting permafrost has the potential to release an additional 1.5 trillion tons of carbon into the atmosphere, and could increase our global average temperature by 1.5°F in addition to our day-to-day human emissions. However, this effect is not included in the IPCC report issued Friday morning, which means the estimates of how Earth's climate will change are likely on the conservative side.

Recent Infographics

Storm Surge

Storm Surge terms described and defined in the Storm Surge infographic by Weather Underground.

El Niño

To understand the science behind El Niño, and the associated precipitation, checkout this infographic by Weather Underground.

Why the Sky is Blue

Finally, childhood questions answered. Find out why the sky is blue in our latest graphic.