Weather Articles

Cost to Fight Arizona's Sawmill Fire Exceeds $4 Million, Officials Say

By Eric Chaney and Sean Breslin
April 28, 2017

Authorities have added up the cost to fight the Sawmill fire so far, and it isn't cheap.

Plains, Midwest Prepare for Long Weekend of Severe Weather; Damage, Outages Reported in Indiana

By Sean Breslin
April 28, 2017

Here are the latest impacts from a severe weather event that's expected to last for days.

Potent System Will Increase Risk of Severe Storms, Including Flooding and Tornadoes, This Weekend in South, Plains and Midwest

By Chris Dolce
April 28, 2017

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

Winter Storm Ursa Dumps Snow on Higher Elevations; Denver Officials Prepare for Impacts

By Sean Breslin
April 28, 2017

Here's the latest on this late-April winter storm.

Winter Storm Ursa Will End April With Rockies, High Plains Snow; Upper Midwest Says, "Same," for May Day

By Jon Erdman
April 28, 2017

Don't put the snowthrower away yet.

Life-Threatening Flash Flood Danger Elevated Through the Weekend in the Ozarks, Mississippi Valley

By Jon Erdman
April 28, 2017

Excessive rain is the concern this weekend in parts of the South and Midwest.

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

By Linda Lam
April 28, 2017

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

One State, Two Extremes: New Mexico Sees Red Flag, Winter Storm Warnings in Same Weekend

By Andrew MacFarlane
April 28, 2017

In the world of wild weather, New Mexico might be the wildest as April comes to a close.

May 2017 Temperature Outlook: Cooler in Parts of North, West; South Staying Warm

By Linda Lam
April 28, 2017

The South will see the most persistent warmth, while parts of the West, Plains and Midwest will see cooler conditions.

April to End With Rockies, High Plains Snow; Upper Midwest Says, "Same," for May Day

By Jon Erdman
April 28, 2017

Don't put the snowthrower away yet.

Hiker Lost in Snowstorm on Nepal Mountain Rescued After 47 Days

By Drew McFarlane
April 28, 2017

After 47 days stranded on a mountain in Nepal with only salt and water to survive on, a Taiwanese man was finally rescued Wednesday.

Severe Storms Hit the South; Damage Confirmed in Alabama, Georgia

By Sean Breslin
April 27, 2017

Damage has been reported in Alabama as a line of storms pushed east. Here's the latest.

Second Death Confirmed in North Carolina Flooding

By Jon Erdman and Pam Wright
April 27, 2017

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

Flooding Was Nearly Three Times Deadlier Than Tornadoes and Lightning Combined in 2015-16, NOAA Says

By Brian Donegan
April 27, 2017

Flooding has contributed to over 300 deaths in the U.S. since January 2015.

Above-Average Tornado Activity Doesn't Necessarily Mean Much for Climatological Peak of Tornado Season, History Shows

By Jonathan Belles
April 27, 2017

We explain why early-season severe weather does not have an impact on May tornado activity.

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.

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.

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.

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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

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.