Thanks to El Niño, a 'below-normal' 2018 Atlantic hurricane season is now expected

Hurricane Irma (L) and Hurricane Jose are pictured in the Atlantic Ocean on September 7, 2017.
NOAA | Reuters
Hurricane Irma (L) and Hurricane Jose are pictured in the Atlantic Ocean on September 7, 2017.

Good news! A repeat of the nightmarish 2017 hurricane season isn't expected.

Thanks in part to a developing El Niño, federal forecasters said a "below-normal" Atlantic hurricane season is most likely, in an updated prediction released Thursday.

Overall, the National Oceanic and Atmospheric Administration forecasts nine to 13 named tropical storms will develop in the region, which includes the Atlantic, the Caribbean Sea and Gulf of Mexico.

More from USA Today:

Puerto Rico acknowledges much higher death toll from Hurricane Maria: 1,427 fatalities

California had its hottest month on record. Death Valley had world's hottest month ever

Scheduled for launch this weekend, NASA's Parker Solar Probe will be on a mission to touch the sun

Of those storms, anywhere from four to seven will become hurricanes. This is a drop from an earlier hurricane prediction made in May, when NOAA said five to nine hurricanes would form.

The forecast includes the four storms (Alberto, Beryl, Chris and Debby) that have already formed.

The quieter season is due to oceanic and atmospheric conditions that have become "much more inhospitable to hurricane formation and intensification," said Gerry Bell, lead seasonal hurricane forecaster at NOAA's Climate Prediction Center.

El Niño – a natural warming of Pacific ocean water – typically suppresses hurricane activity by sending strong winds across the Atlantic and Caribbean, Bell said. Those winds often shear apart developing storms, he said.

Forecasters now say there's a 70 percent chance that El Niño will form during the hurricane season.

Unusually cool ocean water in the Atlantic is also a factor in the reduced forecast. Hurricanes need to fuel from warm ocean water to form and intensify.

The season officially began June 1 and runs through Nov. 30.

Last year, 17 named storms formed, of which 10 were hurricanes, including monsters such as Harvey, Irma and Maria.

While the Atlantic hurricane season should be quiet, the opposite is true for hurricanes in the eastern and central Pacific Ocean, Bell said. There, El Nino tends to boost hurricane activity. Already, 11 named storms have formed there.

Whatever the predictions, officials caution that it only takes one powerful hurricane to bring disaster. "Today's updated outlook is a reminder that we are entering the height of hurricane season and everyone needs to know their true vulnerabilities to storms and storm surge," said FEMA administrator Brock Long.

"Now is the time to know who issues evacuation orders in their community, heed the warnings, update your insurance and have a preparedness plan," Long said.

Bell warned that "there are still more storms to come – the hurricane season is far from being over."