Weather Articles

Watches Issued: Severe Thunderstorm Threat, Including Tornadoes, Sweeps From Plains Into South Saturday

By Jonathan Belles
March 24, 2017

The first week of spring features a severe weather threat.

Wintry Precipitation Round 2 Arrives in the Midwest, Northern New England Late Weekend

By Brian Donegan
March 24, 2017

Winter's not over yet in the Great Lakes or interior Northeast.

California's Wet Pattern Returns; Mountain Snow to Add to Impressive Western Snowpack

By Jon Erdman
March 24, 2017

Wet weather is back after a recent and welcomed respite in the Golden State.

Atlantic Tropical or Subtropical Storm May Form Next Week For Just the Second Time In March Since Records Began

By Linda Lam
March 24, 2017

We're not kidding. This potential is on the table in the week ahead.

Numerous Severe Weather Threats Likely to End March Like a Lion

By Jonathan Belles
March 24, 2017

A progressive weather pattern will likely provide multiple rounds of severe storms.

Monsoon Season in Thailand: A Tourist’s Blessing and Curse

By Holly Zynda
March 24, 2017

Thailand stands as a top destination for vacationers from the Western world. But the picturesque beaches and mild weather in the sunny season drives prices up and packs the country with tourists. If you want a more inexpensive, less crowded trip, try traveling in the rainy season!

The Future of Tornado Warnings: More Precise, More Lead Time, Fewer False Alarms

By Jon Erdman
March 24, 2017

A new concept of tornado, and other high-impact warnings, is being developed.

El Niño's Odds to Return By Late Summer or Fall Increasing

By Jonathan Belles and Brian Donegan
March 23, 2017

Odds are increasing that El Niño may develop by late summer or fall.

Here's Why There's More Than One Type of Tornado

By Chris Dolce
March 23, 2017

Here's the answer for all the different types of tornadoes you may hear about.

When The Rain Affects Your Travel Plans

By Holly Zynda
March 23, 2017

Whether in Southeast Asia, on African plains, in the American Southwest or the Australian outback, seasons of intense rain are part of nature’s rhythm. You’ll need to be prepared for potential storms and know how to respond to wetter weather.

New Cloud Types Added For the First Time in 30 Years

By Chris Dolce
March 22, 2017

One cloud species has been named volutus. It's more commonly known as a roll cloud.

5 Best and Worst U.S. Cities in Winter 2016-17

By Jon Erdman
March 22, 2017

One location shows up in both the worst and best winter lists – for good reason.

One Killed in Georgia as Severe Thunderstorms Rattle the South

By Andrew MacFarlane and Sean Breslin
March 22, 2017

Here's the latest on the round of severe weather to sweep through the Southeast.

'Marchuary' Continues in Northeast as New Cold Blast Moves Into Region

By Brian Donegan
March 22, 2017

The chilly March across the Northeast is expected to continue with a new blast of cold air this week.

With More Than 300 Tornadoes, It's the Most Active Start to a Year Since 2008

By Chris Dolce
March 21, 2017

The year is off to a tornadic start.

This Was Your Coldest Temperature of Winter 2016-17 and When It Occurred

By Brian Donegan
March 21, 2017

What were the coldest temperatures where you live in winter 2016-17?

Tornadoes in the Southeast May Be Influenced by Mountainous Terrain; VORTEX-SE Project Investigating This Spring

By Chris Dolce
March 20, 2017

Scientists are hoping to find out more this spring.

Evacuation Orders Lifted for Wildfire Burning near Boulder, Colorado

By Pam Wright and Sean Breslin
March 20, 2017

Here's the latest on the Sunshine fire, burning west of Boulder, Colorado.

Vernal Equinox: Science Behind the First Day of Spring 2017

March 20, 2017

Today is the Vernal Equinox, which is more commonly known as the First Day of Spring.

Wildfire Near Boulder, Colorado, Prompts Evacuations

By Pam Wright
March 19, 2017

The latest on the Sunshine fire, burning west of Boulder, Colorado.

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Featured Blogs

Weird Coastal El Nino Clobbers Peru: 80 Killed, $1.4 Billion in Damage

By Dr. Jeff Masters
March 24, 2017

The world’s costliest flood disaster of 2017 is still unfolding across parts of coastal Peru, where extreme rainfall atop normally dry terrain has led to episodes of major flooding over the last few weeks. More than 110,000 people have been displaced by flooding since December, and more than 80 deaths have been reported. Peru normally gets its heaviest rains during El Niño events, but unusually warm waters in this case have been limited to the easternmost tropical Pacific.

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

By
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.