Weather Articles

Tropical Storm Kai-Tak Bringing Flooding Rains to the Philippines; Could Another Storm Develop in the West Pacific?

By Jonathan Belles
December 16, 2017

Tropical Storm Kai-Tak continues to drench the Philippines with feet of rainfall.

California's Third-Largest Fire Ever Continues to Grow; New Evacuations Ordered

By Ada Carr
December 16, 2017

Only three fires in California history have burned more land than the Thomas Fire.

White Christmas Forecast 2017: Who is Likely to See One?

December 16, 2017

How typical is a white Christmas where you live, and what are your chances this year?

Pattern Change to Bring Milder Temperatures to Midwest, South and Plains This Weekend

By Brian Donegan
December 16, 2017

Could there be some light at the end of the tunnel?

Next Week's Pattern Change Gives Early Glimpse into Christmas Forecast

By Jonathan Erdman
December 16, 2017

It's too early for key details, but an overall pattern is setting up. Here's what we know.

Winter, Early-Spring Temperature Outlook: Warmer Than Average Across Southern Tier, Colder Than Average From Northwest to Midwest

By Linda Lam
December 15, 2017

Here's what our extended forecast says for the months ahead.

South Dakota's Legion Lake Fire Continues Rapid Growth, But Crews Get Increased Containment

By Ada Carr
December 14, 2017

The blaze has grown to about 74 square miles.

Southern California Wildfire Grows to Fourth-Largest in State History

By Sean Breslin and Melissa Kory
December 14, 2017

Only three fires in California history have burned more land than the Thomas Fire, which continues to be a problem in Ventura County.

Winter Storm Chloe Closes Schools for Second Day in Detroit as Snow Falls in Midwest, Northeast

By Sean Breslin
December 14, 2017

Here's what we know about the impacts from the third named storm of the 2017-18 season.

Winter Storm Chloe Spreads Snow From the Great Lakes Into the Northeast Through Early Thursday

By Brian Donegan
December 13, 2017

This fast-moving system will leave its mark in the Great Lakes and Northeast through early Thursday.

Global Warming Likely Made Hurricane Harvey's Rainfall More Intense, Studies Find

By Associated Press
December 13, 2017

Studies have confirmed what many suspected.

The Thomas Fire Came Within Feet of Burning a National Weather Service Radar Site

By Chris Dolce
December 13, 2017

The radar system was within the burn area of the Thomas Fire when it began to explode.

Three Snowmakers Possible in Midwest, Northeast Into Early Next Week

By Brian Donegan
December 12, 2017

An active pattern will send three more snowmakers across the Midwest and Northeast over the next several days.

Sunday's Historic Snowy Game Is Why Buffalo Has the NFL's Worst and Most Awesome Weather

By Jonathan Erdman
December 12, 2017

Weather geeks and football fans are thrilled whenever a Bills home game is affected by weather.

More Snow Sweeping Through the Great Lakes and Northeast Tuesday

By Jonathan Erdman
December 12, 2017

A fresh blanket of snow arrives for some in the Northeast.

Snow Has Already Been Recorded in All 50 States, and It Isn't Even Winter Yet

By Chris Dolce
December 12, 2017

A wintry start to December has led to snow being recorded in every state.

Even Colder Temperatures are Ahead This Week in the Midwest, East

By Linda Lam
December 11, 2017

Additional rounds of cold conditions will bring the coldest temperatures so far this season to many locations in the East this week.

Hurricane Maria's Death Toll in Puerto Rico Likely More Than 1,000, New York Times Investigation Reveals

By Sean Breslin
December 11, 2017

New information casts serious doubt about the announced death toll from Hurricane Maria in Puerto Rico.

What Does Wind Chill Really Mean?

By Brian Donegan
December 11, 2017

You see the wind chill in your weather forecast all winter, but do you know what it means?

United Kingdom Blanketed by Snow; Flights Canceled, Schools Closed

By Associated Press
December 11, 2017

A winter storm disrupted travel across the United Kingdom on Monday.

Featured Blogs

Meteorology of Saturday's Colombian Flood Disaster That Killed 254

By Dr. Jeff Masters
اپریل 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
مارچ 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
اکتوبر 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
ستمبر 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
مئی 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
ستمبر 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.