Weather Articles

Winter Storm Inga's Snowy Swath to Sweep Through the Midwest, Northeast, South; Dangerous Ice Possible in Central, Southeastern Texas

By Chris Dolce
January 15, 2018

A wintry mess is expected in multiple regions from Inga.

Missing Man Found Safe After Deadly Southern California Mudslides

By Sean Breslin
January 15, 2018

It has been nearly a week since the deadly mudslides in Montecito, but officials are still looking for the missing.

State of Emergency Declared, Evacuations Ordered as Ice Jams Clog Northeast Waterways

By Ada Carr
January 15, 2018

Frigid waters spilling from flooded rivers have prompted evacuations and water rescues.

Arctic Cold Returns, But Another January Thaw Will Provide Relief Late Week

By Chris Dolce
January 15, 2018

Another cold weather pattern has locked in east of the Rockies, but how long will it last?

Pattern Change to Boost Western Snowpack and Potentially Spawn a Plains, Midwest Wintry Mess

By Chris Dolce
January 15, 2018

The next snowmaker will boost the Rockies snowpack and potentially create a wintry mess in the Plains and Midwest.

What’s Behind the Cold Snaps and Does Climate Change Have Anything to Do With Them?

By Sean Breslin
January 15, 2018

Here's what the experts are saying about this topic.

Much of the South Has Seen Snow Already This Season, and It's Only Mid-January

By Brian Donegan
January 15, 2018

Four separate winter storms have brought accumulating snow to the South since early December.

Frost Quakes Likely the Culprit Behind Mysterious Booms in Indiana

By Ada Carr
January 15, 2018

The startling phenomenon is typically triggered by chilly temperatures.

Winter Storm Inga Triggers Crashes in Illinois, Indiana and Kansas

By Ada Carr
January 15, 2018

The storm has begun causing its wintry mess.

Think You're Cold? Parts of Siberia Plunged Into the 70s Below Zero, and That's Not Unusual

By Jonathan Erdman
January 15, 2018

You may think twice before complaining about the cold again.

Cloud Tower Over Bahamas Spotted by NASA

By Sean Breslin
January 15, 2018

Here's how such a cloud can form.

At Least One Dead After 7.1 Magnitude Quake Strikes Near Coast of Peru

January 14, 2018

The powerful temblor destroyed adobe structures after it struck the Peruvian coast.

New Storm System to Bring Hazardous Snow and Ice to the Midwest, South and Northeast Early Week

January 15, 2018

Wintry weather is possible in multiple regions to begin this week.

Winter Storm Hunter Spreads a Mess of Snow, Sleet and Ice Across the Midwest, East and mid-South (Recap)

By Jonathan Erdman, Chris Dolce, Brian Donegan
January 13, 2018

The Midwest, Northeast, even parts of the South will be impacted.

Thousands Without Power As Winter Storm Hunter Clobbers Northeast, New England

By Sean Breslin
January 13, 2018

Here are the latest impacts from this cross-country winter storm.

Another Coastal Storm May Bring More Snow to the Northeast, Midwest and South In the Upcoming Week

January 13, 2018

There are many uncertainties. Here's what we know right now.

Drought Has Expanded Rapidly Across the Southern U.S. Since Fall and the Outlook Into Spring Is Worrisome

By Linda Lam
January 13, 2018

Drier-than-average conditions for much of the South since the fall have allowed drought conditions to quickly increase.

January Thaw Isn't All Good News; Ice Jams, Flooding Will Continue Through Saturday

By Linda Lam
January 13, 2018

A January thaw is not always good news.

Flooding From Winter Storm Hunter's Rainy Side Forces Vermont Residents From Homes; 1 Dead in West Virginia

By Sean Breslin and Pam Wright
January 13, 2018

Parts of the Northeast saw serious flooding Friday. Here's the latest.

Flu Epidemic Hits Most of the United States, Killing At Least 20 Children

By Pam Wright
January 13, 2018

The flu has hit early and hit hard across the U.S.

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

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.