Weather Articles

West On Fire: Dozens of Large Fires Cause Damage, Prompt Evacuations

By Pam Wright
June 29, 2017

Here's the latest on the spate of large wildfires burning in the West.

Siege of Severe Thunderstorms With Damaging Winds, Hail, Tornadoes, Flooding Rain to Persist in Plains, Midwest

By Chris Dolce
June 29, 2017

A classic summer stormy pattern is in play over the nation's mid-section.

Tornadoes, Damage Reported As Severe Weather Strikes Iowa, Wisconsin

By Pam Wright
June 29, 2017

Here's the latest on this weather event.

Fourth of July Weekend Weather Forecast: It'll Be Stormy and Humid in the East; West Will Remain Dry

By Chris Dolce
June 29, 2017

Thunderstorms could interrupt activities east of the Rockies this weekend.

2 Billion Could Become Climate Refugees From Rising Seas by 2100, Study Says

By Pam Wright
June 28, 2017

“We’re going to have more people on less land and sooner that we think," one researcher says.

The Weirdest Weather Events of 2017 So Far

By Jon Erdman
June 28, 2017

A collection of some of 2017's oddities so far.

Dora Weakening Quickly off Mexico's Pacific Coast

June 28, 2017

After strengthening quickly Monday, Dora is now fizzling quickly.

Typical Summer Weather Means Different Things Depending Where You Live

By Linda Lam
June 28, 2017

Find out what typical summer weather means for your region.

Extreme Southwest Heat Wave May Be to Blame for 12 Phoenix-Area Deaths, Authorities Say

By Associated Press
June 27, 2017

Four other deaths have been confirmed in Arizona since the heat wave began.

Why Dry Thunderstorms Are a Danger

By Chris Dolce
June 27, 2017

This type of thunderstorm is most common in the western states.

Atlantic Hurricane Season: What to Expect in July

By Jonathan Belles, Chris Dolce and Jonathan Erdman
June 27, 2017

Typical and recent tropical activity in July in the Atlantic basin.

Expect Less But Bigger Hail as Climate Warms, Study Says

By Eric Chaney
June 27, 2017

A team of Canadian researchers says global warming is contributing to a change in rainfall patterns, which computer modeling indicates may apply to hail as well.  

NASA Maps Reveal Scope, Intensity of Southwest's Extreme Heat Wave

By Ada Carr
June 26, 2017

Land surface temperatures have reached upwards of 120 degrees in some places.

Weather Changes Ahead: 4 Things To Watch This Week

By Linda Lam
June 26, 2017

A change in the upper-level weather pattern is expected to end June.

Beginning of Summer's First Full Week Won't Feel Summerlike in the East

By Brian Donegan
June 26, 2017

A southward dip in the jet stream over the East is bringing cooler weather to the region while the West continues to bake in heat.

Hurricane Dora Becomes the First Hurricane of the Eastern Pacific Hurricane Season off Mexico's Coast

June 26, 2017

Dora's center won't landfall, but there are a few peripheral threats.

Why the Area We Watch in the Atlantic Expands in July to the Cape Verde Islands

By Jonathan Belles
June 26, 2017

Storms that have their origins near the Cabo Verde Islands have the best chance to become monsters in the depths of hurricane season.

Remnants of Tropical Storm Cindy: Emergency Declared in Two Michigan Counties

By Sean Breslin
June 24, 2017

Here's what we know about this deadly storm.

Flash Flooding and Strong Winds Possible in Parts of the Ohio Valley and Northeast

By Jonathan Belles
June 23, 2017

Cindy's ghost will bring heavy rain into the Northeast on Saturday.

Remnants of Cindy are Spreading Heavy Rainfall From Lower Mississippi Valley into Ohio Valley

June 23, 2017

The remnants of Cindy are spreading heavy rain inland.

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.