NOAA Climate.gov

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NOAA Climate.gov provides science and information for a climate-smart nation. Americans’ health, security, and economic well-being are closely linked to climate and weather. People want and need information to help them make decisions on how to manage climate-related risks and opportunities they face. NOAA Climate.gov is a source of timely and authoritative scientific data and information about climate. Our goals are to promote public understanding of climate science and climate-related events, to make our data products and services easy to access and use, to provide climate-related support to the private sector and the Nation’s economy, and to serve people making climate-related decisions with tools and resources that help them answer specific questions. Each of the tabs in NOAA Climate.gov is designed to serve a different audience: News & Features is a popular-style magazine for the science-interested public covering topics in climate science, adaptation, and mitigation. Visit the section… Maps & Data is a gateway to reusable climate maps and datasets that document various climate conditions. The section aims to serve officials and professionals who need climate data to inform their decisions or compile a climate adaptation report. Visit the section… Teaching Climate offers learning activities and curriculum materials, multi-media resources, and professional development opportunities for formal and informal educators who want to incorporate climate science into their work. Source

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How spring plant milestones are shifting in response to changing climate

| NOAA Climate.gov Verified
Earlier this year we wrote about how weather affected the arrival of spring’s first leaves across the United States. Next, we wrote about another important sign of spring—first bloom dates—and where the first blooms of lilacs and honeysuckles were and weren’t in sync with this year’s leaf-out dates. For the last post in this series we are going to explore how these important milestones of nature’s calendar have been shifting in recent years.
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Keeping fans safe in a warming world: a growing challenge for outdoor events

| NOAA Climate.gov Verified
Rio de Janeiro has long sold an attractive vision of endless summer—strolling Copacabana Beach, swimming in the azure ocean, and sipping something cold, like guaraná or coconut water, under a blazing sun. The year 2023 was Brazil’s hottest year in recorded history, pushing the limits of what even the locals could bear. In part due to the effects of the natural climate pattern called El Niño, the South American country suffered nine heat waves that year.
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Can NOAA predict the next flood? New research shows promise

| NOAA Climate.gov Verified
Heavy rain and flooding on April 12-13, 2023, caused Fort Lauderdale-Hollywood International Airport to shut down for about forty hours. Credit: Joe Cavaretta/South Florida Sun Sentinel. Used with permission. April 12, 2023, was a day Jennifer Jurado, Chief Resilience Officer for Broward County, Florida, will never forget.
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A 'Hitchhiker's Guide' to the June 2025 ENSO update

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By Emily Becker
| NOAA Climate.gov Verified
The Pacific Ocean has hit pause and settled into ENSO-neutral conditions, which are expected to continue through the Northern Hemisphere summer. This makes seasonal forecasting for upcoming global rain, temperature, and other patterns a bit trickier. The odds of La Niña increase through the fall but remain lower than the odds of neutral. By the November–January period, there’s a 48% chance of neutral and a 41% chance of La Niña, with El Niño a distant third.
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First blooms of the 2025 spring season were earlier than average across most of the United States

| NOAA Climate.gov Verified
Our previous post in this series on the arrival of spring highlighted how the leaf-out date (the date when plants’ first leaves emerged) for common garden plants—lilac and honeysuckle—showed a lot of variation across the eastern United States. The map resembles a layer cake, with alternating bands of color: purple where leaf-out came later than average, and orange where leaf-out came earlier. The timing was linked to regional weather events that chilled some areas and warmed others.
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U.S. climate outlook for June 2025

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By Mike Halpert
| NOAA Climate.gov Verified
Despite below-average May temperatures across much of the middle part of the country, spring (March-May) temperatures still ended up above average almost from coast to coast. Across the South and East, plentiful precipitation (along with numerous bouts of severe weather) during May and throughout the rest of the spring improved drought in these regions. As we head into summer and typical hot weather, what’s ahead for June?
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Tornado season 2025: active through April, and May is keeping pace

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By Kelsey M Malloy
| NOAA Climate.gov Verified
This is a guest post by Prof. Kelsey Malloy, with the Department of Geography and Spatial Sciences at the University of Delaware. She specializes in diagnosing the influence of climate on severe convective storm risk. She is also an accomplished blogger at Seasoned Chaos, which focuses on subseasonal-to-seasonal forecasting. ***** On your mark, get set, go! The 2025 U.S. severe weather season is off to a formidable start.
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Unmasking the complicated chemistry of wildfire smoke: How far have scientists come?

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By Amber Liggett
| NOAA Climate.gov Verified
Each time Lisa Patel stepped out of her apartment, a burning sensation stung her eyes and nose. The thick, toxic air made it difficult to breathe, tightening her chest as she moved through the streets of New Delhi. With asthma, every breath felt like a struggle. Amid the constant buzz of traffic during her four-month detail in India in 2006, Patel watched rickshaw drivers and motorcyclists ride past, their faces shielded by bandanas.
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May 2025 ENSO update: eye of neutral

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By Emily Becker
| NOAA Climate.gov Verified
The tropical Pacific is in ENSO-neutral conditions, and neutral is expected to continue through the Northern Hemisphere summer. Neutral is also the most likely outcome for the fall and winter, although chances of La Niña are a close second. Today, as your trusty representative of the ENSO forecast team, I’ll cover current conditions in the tropical Pacific, what we mean by neutral, and what it means for seasonal climate prediction… with a side of Macbeth (footnote 1).
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U.S. climate outlook for May 2025

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By Mike Halpert
| NOAA Climate.gov Verified
Precipitation extremes were the big story during April, with upwards of 10 inches of rain falling across parts of the Nation's midsection, which resulted in significant flooding, and significant deficits recorded along the Gulf Coast and in the Pacific Northwest. Temperatures, on the other hand, were generally quite pleasant, with above-average temperatures recorded over much of the country.
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