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OKIsItJustMe

(19,937 posts)
Fri Jan 20, 2012, 06:15 PM Jan 2012

NASA Sees Repeating La Niņa Hitting its Peak

http://www.jpl.nasa.gov/news/news.cfm?release=2012-019
[font face=Times, Serif][font size=5]NASA Sees Repeating La Niña Hitting its Peak[/font]

[font size=1]The latest image of sea surface heights in the Pacific Ocean from NASA's Jason-2 satellite shows that the current La Niña is peaking in intensity. Yellows and reds indicate areas where sea surface height is higher than normal (due to warm water), while blues and purples depict areas where sea surface height is lower than normal (due to cool water). Green indicates near-normal conditions. Image credit: NASA/JPL Ocean Surface Topography Team[/font]

[font size=3]January 18, 2012

La Niña, "the diva of drought," is peaking, increasing the odds that the Pacific Northwest will have more stormy weather this winter and spring, while the southwestern and southern United States will be dry.



This is the second consecutive year that the Jason altimetric satellites have measured lower-than-normal sea surface heights in the equatorial Pacific and unusually high sea surface heights in the western Pacific.

"Conditions are ripe for a stormy, wet winter in the Pacific Northwest and a dry, relatively rainless winter in Southern California, the Southwest and the southern tier of the United States," says climatologist Bill Patzert of JPL. "After more than a decade of mostly dry years on the Colorado River watershed and in the American Southwest, and only two normal rain years in the past six years in Southern California, low water supplies are lurking. This La Niña could deepen the drought in the already parched Southwest and could also worsen conditions that have fueled recent deadly wildfires."

NASA will continue to monitor this latest La Niña to see whether it has reached its expected winter peak or continues to strengthen.

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