Weather Articles

Winter Storm Oliver Will Continue Bringing Waves of Snow, Ice to the Plains, Midwest and West, Including the Portland Metro

By Jonathan Belles
February 20, 2018

After one round of snow and ice, Oliver has more in store through the end of the week.

Big Temperature Contrasts Will Bring Record Cold in Parts of the West and Record Warmth in the East

By Linda Lam
February 20, 2018

It may seem like spring in some areas this week while others will experience another arctic blast.

The 5 Snowiest Spots So Far This Winter and How They Compare to Previous Years

By Brian Donegan
February 20, 2018

With winter two-thirds of the way over, here's a look at the five snowiest areas of the Lower 48 so far this season.

Next Wintry System Behind Oliver to Bring Snow and Ice to the Southwest, including the Sierra, and Midwest Through This Weekend

By Jonathan Belles
February 20, 2018

A new threat of snow and ice is ahead late this week.

Heavy Rain to Last Into the Weekend from Texas to the Mississippi and Ohio Valleys; Flash Flood, River Flooding to Worsen

By Chris Dolce
February 20, 2018

It may still be late February, but we have heavy rain and flooding ahead in parts of the nation.

After Flooding Rain, Severe Weather is in Play From Texas to Tennessee and Southern Illinois Saturday

By Linda Lam
February 20, 2018

Severe threat will ramp up for the last weekend of February.

PyeongChang 2018 Winter Olympic Games Forecast: Several Athletes Hurt by High Winds and Cold Temperatures in First Week

By Jonathan Belles and the Associated Press
February 20, 2018

The Winter Games have been affected by cold temperatures and gusty winds.

Winter Storm Oliver's Ice and Snow Causes at Least 6 Deaths in Nebraska, Minnesota

By Ada Carr and Sean Breslin
February 20, 2018

Flights have been delayed and fatal crashes have been reported. Here's the latest.

Smoke-Filled Andes Mountain Valleys Seen in Stunning Photo from 2016 Just Released by NASA

By Sean Breslin
February 20, 2018

This is what it looks like when fires fill valleys with smoke that doesn't dissipate quickly.

Without Warning, North Texas Rocked by Damaging EF0 Tornado; 3 Injured in Johnson County

By Sean Breslin
February 20, 2018

A small tornado caused big problems in North Texas early Tuesday morning.

It's Not Just Your Imagination: Spring Has Arrived Really Early This Year

By Sean Breslin
February 20, 2018

If you think it should be colder than this in mid-February, you're right.

Motorhome Trapped in Mounds of Snow in French Alps Finally Freed

By Pam Wright
February 20, 2018

The motorhome became buried after several snowstorms paralyzed parts of the Alps in January.

Lingering Ice, Snow From Winter Storm Oliver to Lead to Dangerous Commutes Tuesday in the Plains, Upper Midwest

By Jonathan Belles
February 20, 2018

Snow, ice and strong winds will make for hazardous travel Tuesday and Tuesday night.

Remnants of Tropical Cyclone Gita Bring Heavy Rain, Flooding to New Zealand

February 20, 2018

A state of emergency declared in several New Zealand districts as remnants of Tropical Storm Gita pound the South Island.

Rising Northeast Temperatures: Map Shows Rarity of 70s in February

By Linda Lam
February 19, 2018

Rare temperatures for February are expected in the Northeast for the second year in a row.

Winter Olympics Have Been So Cold, Some Say Their Makeup Froze to Their Faces

By Ada Carr
February 19, 2018

Temperatures have plunged far below freezing at times.

Mozambique Garbage Pile Collapses Amid Heavy Rainfall, Killing 17

By Associated Press
February 19, 2018

Heavy rainfall reportedly caused the tragedy. Here's what we know.

Hawaii Flash Flooding Leads to Water Rescues, Evacuations on Oahu, Maui

By Alex Blumer and Sean Breslin
February 19, 2018

Flash flooding caused travel problems Sunday, and some people needed to be pulled from the floodwaters.

What Ice Storm Accumulations Mean and How to Stay Safe

By By Chris Dolce
February 19, 2018

See the damage and impacts caused by ice storms and how to keep your family safe.

Winter Storm Noah: At Least 2 Dead

By Pam Wright
February 18, 2018

The storm's trek across the Midwest contributed to multiple collisions and injuries.

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.