Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

La Niña’s Return Cools the Pacific and Shakes Up Global Weather
Scitech Daily ^ | February 08, 2025 | Emily Cassidy, NASA Earth Observatory

Posted on 02/10/2025 8:05:09 AM PST by Red Badger

La Niña has returned, cooling the Pacific and disrupting global weather. NOAA confirms it’s weak, likely short-lived, and won’t counteract rising global temperatures. Expect storms, droughts, and shifting climate patterns.

La Niña has made a long-awaited return, cooling the Pacific and stirring up global weather patterns.

This natural climate phenomenon, part of the ENSO cycle, strengthens trade winds and brings up deep, cold ocean water, altering temperatures and rainfall worldwide. While NOAA confirmed its presence in early 2025, this La Niña is weaker than past events and may not last long.

La Niña Arrives in the Pacific

After seven months of anticipation, La Niña—the cooler counterpart to El Niño—finally emerged in the eastern Pacific Ocean in early December 2024. However, it may be short-lived. According to NOAA, the Pacific could return to neutral conditions by spring 2025.

La Niña is part of the El Niño-Southern Oscillation (ENSO) cycle and occurs when stronger-than-usual easterly trade winds drive colder, deep ocean water to the surface in the eastern tropical Pacific. This process cools large areas of the ocean near the equator. As these intensified winds push warm surface waters westward toward Asia and Australia, the atmosphere responds, altering moisture levels and shifting global weather patterns.

NOAA Confirms La Niña Conditions

In a report published on January 9, 2025, the NOAA Climate Prediction Center confirmed that La Niña conditions were present. They measured sea surface temperatures 0.7 degrees Celsius (1.3 degrees Fahrenheit) below average in an area of the tropical Pacific, from 170° to 120° West longitude, known as the Niño 3.4 region.

The signature of La Niña is also visible in the central and eastern Pacific Ocean as areas of lower-than-average water levels. That’s because cooler water contracts, lowering sea levels. (Conversely, warmer water expands, raising them.) The map above depicts sea surface height anomalies across the central and eastern Pacific Ocean as observed on January 13, 2025. Shades of blue indicate sea levels that were lower than average, while shades of red indicate areas where the ocean stood higher than normal. Normal sea level conditions appear in white.

An illustration of the Sentinel-6 Michael Freilich satellite. Credit: NASA/JPL-Caltech

Tracking La Niña from Space

Data for the map were acquired by the Sentinel-6 Michael Freilich satellite and processed by scientists at NASA’s Jet Propulsion Laboratory (JPL). Note that signals related to seasonal cycles and long-term trends have been removed to highlight sea level anomalies associated with ENSO and other short-term natural phenomena.

“Although La Niña is here, it’s not a particularly strong one,” said Josh Willis, an oceanographer and Sentinel-6 Michael Freilich project scientist at JPL. Willis noted that during an especially strong La Niña in 2010-2011, temperatures in the tropical Pacific were about 1.6°C (2.9°F) below average in January 2011, compared to just 0.7°C (1.3°F) below average in January 2025. NOAA forecasts that this La Niña will remain weak and is unlikely to reach -1°C below average—the threshold at which La Niña is considered moderate in strength. Neutral conditions were expected to return in the meteorological spring, between March and May.

Global Weather Disruptions Ahead

La Niña’s coupling with the atmosphere and ocean alters global atmospheric circulation and can cause shifts in the path of mid-latitude jet streams in ways that intensify rainfall in some regions and bring drought to others. In the western Pacific, rainfall can increase over Indonesia and Australia. Clouds and rainfall become more sporadic over the central and eastern Pacific Ocean, which can lead to dry conditions in Brazil, Argentina, and other parts of South America and wetter conditions over Central America. In North America, cooler and stormier conditions often set in across the Pacific Northwest, while weather typically becomes warmer and drier across the southern United States and northern Mexico.

ENSO adds a natural source of year-to-year variability in global temperatures. Because such a wide swath of the Pacific is cold, La Niña tends to keep a lid on the average global surface temperature. But even the cool water in the Pacific does not completely offset long-term warming trends; some of the hottest years on record have coincided with La Niña, such as in 2010 and 2020.

NASA Earth Observatory image by Lauren Dauphin, using modified Copernicus Sentinel data (2025) processed by the European Space Agency and further processed by Josh Willis, and Kevin Marlis/NASA/JPL-Caltech.


TOPICS: Agriculture; Gardening; History; Weather
KEYWORDS:
Navigation: use the links below to view more comments.
first previous 1-2021-31 last
To: packrat35

Only totalitarian governments can save the planet!


21 posted on 02/10/2025 8:38:16 AM PST by TheDon (Remember the J6 political prisoners! Remember Ashli Babbitt!)
[ Post Reply | Private Reply | To 19 | View Replies]

To: Red Badger

Climate is just long term weather patterns.

And average weather is just the average of ALL measurements, including extremes.

The average temperature for us today is a high of 33 and a low of 10 with a record high of 59 and record low of -20.

IOW, extremes happen and mean nothing in spite of all the hyperventilating over them.

Nor is there the likelihood that any one day will have EXACTLY average weather. It’s ALWAYS going to be higher or lower in both temperature and precipitation.

But none of that matters to the peddlers of fear porn.


22 posted on 02/10/2025 8:39:10 AM PST by metmom (He who testifies to these things says, “Surely I am coming soon." Amen. Come, Lord Jesus)
[ Post Reply | Private Reply | To 12 | View Replies]

To: showme_the_Glory

Are you going to believe us or your lying eyes?


23 posted on 02/10/2025 8:39:33 AM PST by Colt1851Navy (What was wrong with Nixon?)
[ Post Reply | Private Reply | To 17 | View Replies]

To: packrat35
We need more science and less global warming cult...

Just like everything else connected in some way to government, government-funded science has become a 'cult of personality', and climate science is no exception. I guarantee that climate science grant recipients drink good wine at their government funded meetings.

24 posted on 02/10/2025 8:40:07 AM PST by neverevergiveup
[ Post Reply | Private Reply | To 20 | View Replies]

To: metmom

We had six inches of snow on the ground last month, on the Gulf Coast!

Never in living memory has that ever happened. Louisiana had its first Blizzard Warning! I-10 was shut down from NOLA to Tallahassee.

Yet they still preach this Global Warming BS..................


25 posted on 02/10/2025 8:49:51 AM PST by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
[ Post Reply | Private Reply | To 22 | View Replies]

To: bray
When all this cr** started, Hillary announced that it was a tool to engage young people into politics.

And so we have unhappy Penguins, unhappy Polar bears and green shirts in every classroom in America....declaring Climate Change is killing the earth.

26 posted on 02/10/2025 8:55:01 AM PST by Sacajaweau
[ Post Reply | Private Reply | To 9 | View Replies]

To: Red Badger

Expect storms, droughts, and shifting climate patterns.

So in other words...weather.


27 posted on 02/10/2025 9:00:48 AM PST by tet68 ( " We would not die in that man's company, that fears his fellowship to die with us...." Henry V.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Red Badger

OMG! How much longer do we have?


28 posted on 02/10/2025 9:28:50 AM PST by libertylover (Our biggest problem, by far, is that almost all of big media is AGENDA-DRIVEN, not-truth driven.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: libertylover

A billion years, plus or minus a few millennia..........


29 posted on 02/10/2025 9:29:58 AM PST by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
[ Post Reply | Private Reply | To 28 | View Replies]

To: libertylover
OMG! How much longer do we have?

10-25 years. It's ALWAYS 1-25 years.

30 posted on 02/10/2025 9:31:11 AM PST by Teacher317
[ Post Reply | Private Reply | To 28 | View Replies]

To: Red Badger

Sounds like Los Angles is in for another death valley summer.

I’ve got to win the lottery to get out of this shit hole soon.


31 posted on 02/10/2025 11:44:44 AM PST by Vaduz
[ Post Reply | Private Reply | To 1 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-2021-31 last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson