Weather Articles

Dangerous Flash Flood Threat Looms This Weekend in Ozarks, Mississippi Valley

By Jon Erdman
April 27, 2017

It's not just severe weather that is a concern.

Multiple Rounds of Severe Thunderstorms, Flooding Expected Through at Least Sunday

By Chris Dolce
April 26, 2017

An active jet stream will increase the risk of severe weather and flooding through this weekend.

Tornado, Flooding, Golf Ball-Sized Hail as Severe Weather Moves Into Midwest, South

By Eric Chaney
April 26, 2017

Here are the latest impacts from the multi-day severe threat.

Emergency Declared in North Carolina County as Response to Deadly Floods

By Jon Erdman and Pam Wright
April 26, 2017

Here's the latest on the deadly flash flooding that struck North Carolina.

April Could End With a Snowstorm in the Rockies, High Plains and Upper Midwest

By Jon Erdman
April 26, 2017

Don't put the snowthrower away yet, even though April is almost over.

Major Warm-Up Expected in Northeast Late Week into This Weekend; First 90-Degree Day Possible in Washington D.C.

By Brian Donegan
April 26, 2017

It's almost time to break out the flip-flops and shorts in parts of the Northeast.

Southern Arizona's Sawmill Fire Grows Larger Despite Calming Winds

By Eric Chaney and Sean Breslin
April 26, 2017

Firefighters battled tough weather conditions while trying to contain a blaze that has consumed more than 60 square miles.

Pattern Change Will Bring Drier Conditions to West, Cooler Temperatures to East

By Linda Lam
April 26, 2017

A notable difference in the weather is ahead for many areas as the calendar turns to May.

Climate Change Is Pushing the Arctic Into a New State Faster Than Scientists Expected

By Brian Kahn
April 26, 2017

Scientists say some Arctic changes from global warming may be permanent.

Goodbye, Winter! Swiss Blow Up Snowman in Yearly Spring Ritual

By Eric Chaney
April 26, 2017

The Swiss really know how to say goodbye to winter.

Arizona Wildfire Explodes in Size Due to Dry, Windy Weather

By Eric Chaney
April 25, 2017

Firefighters battled tough weather conditions while trying to contain a blaze that has consumed at least 15,000 acres.

At Least 1 Dead as Widespread Flash Flooding Swamps Raleigh, North Carolina

By Jon Erdman
April 25, 2017

Heavy rain prompts deadly flash flooding in the North Carolina capital.

Sunless in Seattle: New Records Smashed For Rainy-Season Precipitation

By Jon Erdman
April 25, 2017

This won't help the city's already wet reputation.

GOES-16 Satellite Imagery Detects Sea Ice Swirling Near Canada

By Jonathan Belles and Chris Dolce
April 25, 2017

Testing continues for GOES-16, but the results so far are spectacular.

Rare Cloud May Have Inspired Edvard Munch's 'The Scream'

By Linda Lam
April 25, 2017

A new hypothesis may explain what's depicted in one famous painting.

California Spider, Insect Explosion Expected as Drought Ends

By Eric Chaney
April 25, 2017

An entomologist expects a “bumper crop” of spiders to follow in the wake of wetter weather. 

Flood Threat Continues in the Carolinas, Virginia as East Coast System Moves North

By Linda Lam
April 24, 2017

A wet start to the week is expected for areas near the East Coast.

Water Rescues Reported, Thousands Without Power as Rain Causes Flooding from South Carolina to Virginia; Charleston Hit Hard

By Eric Chaney
April 24, 2017

Persistent rain on the East Coast has caused flooding from South Carolina to Virginia.

Supercells: What to Know About These Dangerous Thunderstorms

By Chris Dolce
April 24, 2017

Here's what to know about this dangerous type of thunderstorm.

Yes, April Is Actually the Snowiest Month in These Places

By Jon Erdman
April 24, 2017

Believe it or not, heavy snow can be an April thing for some.

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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

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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.