El Niño could linger in Northern Hemisphere into next year

That could mean more rainfall for drought-stricken California next spring.

Gene Blevins/REUTERS
Drivers on the 14 Freeway come to stop as monsoon storm cell dumps hail and rain in the high desert area of Los Angeles County, California July 30, 2015.

A US government weather forecaster on Thursday raised the likelihood that El Niño conditions would last into the Northern Hemisphere's early spring to 85 percent, boosting the probability that drought-stricken California could see increased rains.

The Climate Prediction Center, a National Weather Service agency, last month forecast an 80 percent chance that conditions would last through early spring. The CPC still says there is a more than 90 percent chance that El Niño conditions would last through the Northern Hemisphere winter.

The new forecast marginally raises the risk that the El Niño phenomenon, the warming of Pacific sea-surface temperatures, will unleash a period of extreme and potentially damaging weather across the globe.

Past instances have caused heavy rains and floods, hitting grain crops in South America, and scorching weather as far as Asia and East Africa.

But one potential El Niño beneficiary could be California, where record-low rainfall has prompted water usage restrictions and contributed to the spread of devastating wildfires.

"It definitely would increase the likelihood of heavy rains in the winter there, which would certainly improve their situation tremendously," said Donald Keeney, senior agricultural meteorologist with Maryland-based MDA Weather Services.

California could begin to get increased rainfall as early as October and definitely by November or December, Keeney said.

Rainfall will probably not increase in the Pacific Northwest states of Oregon and Washington, which are also suffering from droughts, although they could experience higher temperatures like much of the northern United States, Keeney said.

The CPC said the effects of El Niño were likely to remain minimal across the contiguous United States for the rest of the summer but would increase into the late fall and winter.

El Niño would probably contribute to a below-normal Atlantic hurricane season, the CPC said. That would reduce the likelihood of storms disrupting energy operations in the Gulf of Mexico.

However, the agency said El Niño was likely to lead to above-normal hurricane seasons in both the central and Eastern Pacific hurricane basins.

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