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Blog Category: La Niña

U.S. Dealt Another La Niña Winter but ‘Wild Card’ Could Trump It

Map of US showing expected temperature by region

Devastating drought in Southern Plains likely to continue

The Southern Plains should prepare for continued drier and warmer than average weather, while the Pacific Northwest is likely to be colder and wetter than average from December through February, according to the annual Winter Outlook released today by Commerce's National Oceanic and Atmospheric Administration (NOAA).

For the second winter in a row, La Niña will influence weather patterns across the country, but as usual, it’s not the only climate factor at play. The ‘wild card’ is the lesser-known and less predictable Arctic Oscillation that could produce dramatic short-term swings in temperatures this winter. 

NOAA expects La Niña, which returned in August, to gradually strengthen and continue through the upcoming winter. It is associated with cooler than normal water temperatures in the tropical Pacific Ocean and influences weather throughout the world.  Full NOAA release  |  Climate Prediction Center Outlook | Temperature outlook  |  Precipitation outlook

NOAA Hurricane Outlook Indicates an Above-Normal Season

Hurricanes Karl, Igor and Julia

Urges residents in hurricane-prone areas to be prepared

The Atlantic basin is expected to see an above-normal hurricane season this year, according to the seasonal outlook issued by NOAA’s Climate Prediction Center – a division of the National Weather Service.

Across the entire Atlantic Basin for the six-month season, which begins June 1, NOAA is predicting the following ranges this year:

  • 12 to 18 named storms (winds of 39 mph or higher), of which:
  • 6 to 10 could become hurricanes (winds of 74 mph or higher), including:
  • 3 to 6 major hurricanes (Category 3, 4 or 5; winds of 111 mph or higher)

Each of these ranges has a 70 percent likelihood, and indicate that activity will exceed the seasonal average of 11 named storms, six hurricanes and two major hurricanes.

Now is the time to get your plan together for what you and your family would do if disaster strikes. Visit ready.gov to learn more and if you’re a small business owner, visit www.ready.gov/business to ensure that your business is prepared for a disaster.

Hurricane impacts are not limited to the coastline; strong winds and flooding rainfall often pose a threat across inland areas along with the risk for tornadoes.

Next week, May 22-28, is national Hurricane Preparedness Week. To help prepare residents of hurricane-prone areas, NOAA is unveiling a new set of video and audio public service announcements featuring NOAA hurricane experts and the FEMA administrator that are available in both English and Spanish. These are available at http://www.hurricanes.gov/prepareRelease 

NOAA Still Expects Active Atlantic Hurricane Season; La Niña Develops

Image of Hurricane Alex, the first named storm of the 2010 Atlantic hurricane season, hits northeast Mexico on June 30. From Commerce's National Oceanic and Atmospheric Administration (NOAA): The Atlantic Basin remains on track for an active hurricane season, according to the scheduled seasonal outlook update issued today by NOAA’s Climate Prediction Center, a division of the National Weather Service. With the season’s peak just around the corner – late August through October – the need for preparedness plans is essential.

NOAA also announced today that, as predicted last spring, La Niña has formed in the tropical Pacific Ocean. This favors lower wind shear over the Atlantic Basin, allowing storm clouds to grow and organize. Other climate factors pointing to an active hurricane season are warmer-than-average water in the tropical Atlantic and Caribbean, and the tropical multi-decadal signal, which since 1995 has brought favorable ocean and atmospheric conditions in unison, leading to more active seasons.  Read more here