Weather Articles

Four Big Changes in the Nation's Weather This Week

By Linda Lam
September 25, 2017

A shift in the weather pattern will bring big changes across the contiguous U.S.

Hurricane Maria to Brush North Carolina With Winds, Rain, Storm Surge Flooding; Tropical Storm Warning Issued

By Digital Meteorologists
September 25, 2017

Maria won't landfall, but there will be some impacts along parts of the East Coast.

Three Things to Know About Hurricane Maria

By Linda Lam
September 25, 2017

Here's what you need to know about Maria as it brushes parts of the U.S. East Coast.

Tropical Storm Pilar a Flood, Mudslide Threat For Western Mexico, Including Mazatlan

By Linda Lam
September 25, 2017

The latest on this soaking eastern Pacific tropical storm.

Puerto Rico Radar Obliterated After It Takes a Direct Hit From Hurricane Maria

By Jonathan Belles
September 25, 2017

One of the Puerto Rican radars was found to be obliterated by severe hurricane force winds in Hurricane Maria.

Visitors Ordered to Evacuate Outer Banks' Ocracoke Island Ahead of Hurricane Maria

By Eric Chaney
September 25, 2017

Maria will brush parts of the North Carolina coast and Virginia Tidewater with coastal flooding, high winds and rain.

Rescue Efforts Suspended at Building That Collapsed During Deadly Mexico Quakes

September 24, 2017

At least three quakes struck this month in Mexico, with the death toll from all of them topping more than 400.

Damage Assessments, Power Restoration Efforts Begin in Puerto Rico, Virgin Islands

By Pam Wright
September 24, 2017

An official in Puerto Rico says the destruction from Hurricane Irma has set the island back nearly 20 to 30 years.

Big Pattern Change Ahead, Including a Breather in the Tropics After Maria

By Linda Lam
September 24, 2017

A shift in the weather pattern will bring big changes across the contiguous U.S.

Hurricane Maria May an Increasing Threat of Strong Winds, Rain to Parts of East Coast; High Surf, Rip Currents Likely

By Chris Dolce
September 24, 2017

What we know, and don't yet know, about Maria's East Coast future.

Eight Straight Hurricanes Have Formed in the Atlantic Basin, a First Since the Late 1800s, Thanks to Hurricane Lee

By Jonathan Erdman
September 24, 2017

Yet another jaw-dropping notable from the hyperactive 2017 hurricane season.

Atlantic Has Had At Least One Named Storm Active For the Last 30 Days

By Jonathan Belles
September 23, 2017

This year's peak of hurricane season brought an unrelenting thrashing from tropical storms and hurricanes.

Stunning Last Full Image Of Saturn Captured by Cassini Before Its Demise

By Pam Wright
September 23, 2017

One last image shows the beauty of Saturn.

How to Find a Shelter in Puerto Rico, and How to Get in Touch With Family Members After Hurricane Maria

By Sean Breslin
September 23, 2017

If you still haven't spoken to a family member in Puerto Rico, here are a few things you could try.

Houston Dad Saves 300 People During Hurricane Harvey After 'Crazy' Impulse Purchase

By Pam Wright
September 23, 2017

An impulse purchase led to the rescue or more than 300 stranded Houston residents during Hurricane Harvey.

Hollywood, Florida, Nursing Home Incident Claims 11th Victim

September 22, 2017

The tragedy began to unfold in the wake of Hurricane Irma.

Jose Bringing Coastal Flooding, Rain, Wind to Parts of Northeast; Tropical Storm Warning In Effect for Southeast Massachusetts

September 22, 2017

In some ways, Jose resembles a nor'easter without the snow.

Snow Is Already on the Ground For the First Day of Fall, and That's Totally Normal

By Linda Lam
September 22, 2017

Portions of the West are seeing a snowy start to fall.

Authorities Fear Dam Failure in Puerto Rico; Evacuations Underway

By Pam Wright
September 22, 2017

The death toll is rising as officials survey the damage in the Caribbean from Hurricane Maria.

Chilly Pattern Is Bringing Snow to Parts of Northern Rockies, Sierra Late This Week

By Brian Donegan
September 22, 2017

The northern Rockies are forecast to receive more accumulating snow late this week.

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.