Weather Articles

Snow, Ice and Gusty Winds From Winter Storm Oliver Will Result in Dangerous Travel Conditions From the West Into Plains, Midwest Through Tuesday

By Jonathan Belles
February 19, 2018

Snow, ice and strong winds will make for hazardous travel from the West into the upper Midwest early this week.

Big Temperature Contrasts Ahead: Record Cold in Parts of the West, Record Warmth in the East

By Linda Lam
February 19, 2018

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

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 19, 2018

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

Flood Threat Increases This Week as Heavy Rain Persists From the South into the Southern Great Lakes

By Chris Dolce
February 19, 2018

This rainfall forecast is a good news, bad news situation.

Winter Storm Oliver Hits the West, Plains: Travel Problems Reported in Utah, Montana; Some Schools Canceled in Nebraska

By Ada Carr and Sean Breslin
February 19, 2018

Flights have been delayed and traffic accidents have been reported. Here's the latest.

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.

Active Storm Track Makes Montana This Winter's Epicenter of Snow and Cold

By Jonathan Belles
February 18, 2018

Winter has been extreme in much of the Treasure State this season.

Winter Storm Noah Brings Quick Round of Snow to Parts of Northeast After February Thaw

By Jonathan Erdman
February 18, 2018

It won't be a blockbuster, but it will be a big change this weekend.

Long-Lived System Will Spread Snow, Some Ice From the West Into the Plains, Midwest Into Next Week

By Jonathan Belles
February 17, 2018

The next winter system will arrive in the West and Rockies this weekend, but will blanket the Midwest with snow and ice as well.

Northeast Weekend System Not a Major Snowstorm, But May Bring the First Decent Snow in Over a Month to New York, Philadelphia

By Jonathan Erdman
February 17, 2018

It won't be a blockbuster, but it will be a big change this weekend.

Uniontown, Pennsylvania, Hit by EF1 Tornado Thursday Night; Widespread Damage Reported

By Sean Breslin
February 16, 2018

Here's what we know so far about this tornado, which left widespread damage in the Uniontown area.

Monster Jet Stream Pushes Norwegian Jetliner to Break Transatlantic Record

By Pam Wright
February 16, 2018

The Boeing 787-9 Dreamliner reached a speed of 799 mph, breaking a commercial subsonic transatlantic record.

Spring 2018 Temperature Outlook: Cooler-Than-Average Temperatures Expected in North With Above-Average Warmth Confined to South

By Brian Donegan
February 16, 2018

Will more persistent warmth arrive in March, or do we have to wait until later in the spring to put away our jackets?

Here's When You Should See Your First 70- and 80-Degree Days

By Linda Lam
February 15, 2018

Find out when it will begin to feel more like spring across the country.

Extreme Weather Events Likely Even If Paris Climate Goals Are Met, And U.N. Draft Report Says Meeting Them Is Unlikely

By Pam Wright
February 15, 2018

Climate experts now say we have a "very high risk" of surpassing key Paris Agreement targets.

Featured Blogs

Meteorology of Saturday's Colombian Flood Disaster That Killed 254

By Dr. Jeff Masters
Aprīlis 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
Marts 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
Oktobris 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
Septembris 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
Maijs 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

Septembris 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.