May 22, 2007 —
Experts at the NOAA Climate
Prediction Center are projecting a 75 percent chance that the Atlantic
Hurricane Season will be above normal this year—showing the ongoing
active hurricane era remains strong. With the start of the hurricane
season upon us, NOAA recommends
those in hurricane-prone regions to begin their preparation plans. (Click
NOAA image for larger view of NOAA’s 2007 Atlantic hurricane season
outlook. Please credit “NOAA.”)
"For the 2007
Atlantic hurricane season, NOAA scientists predict 13 to 17 named
storms, with seven to 10 becoming hurricanes, of which three to five
could become major hurricanes of Category 3 strength or higher," said
retired Navy Vice Adm. Conrad
C. Lautenbacher, Ph.D., undersecretary of commerce for oceans and
atmosphere and NOAA administrator. An average Atlantic hurricane season
brings 11 named storms, with six becoming hurricanes, including two
major hurricanes.
Climate
patterns responsible for the expected above normal 2007 hurricane
activity continue to be the ongoing multi-decadal signal (the set of
ocean and atmospheric conditions that spawn increased Atlantic
hurricane activity), warmer-than-normal sea surface temperatures in the
Atlantic Ocean and the El
Niño/La Niña cycle.
Last year,
seasonal hurricane predictions proved to be too high when an unexpected
El Niño rapidly developed and created a hostile environment for
Atlantic storms to form and strengthen. When storms did develop,
steering currents kept most of them over the open water and away from
land. (Click NOAA image for larger view of conditions in the
Atlantic Basin that can produce an above normal hurricane season.
Please credit “NOAA.”)
"There is some
uncertainty this year as to whether or not La Niña will form,
and if it does how strong it will be," said Gerry Bell, Ph.D., lead
seasonal hurricane forecaster at the NOAA Climate Prediction Center.
"The Climate Prediction Center is indicating that La Niña could
form in the next one to three months. If La Niña develops, storm
activity will likely be in the upper end of the predicted range, or
perhaps even higher depending on how strong La Niña becomes.
Even if La Niña does not develop, the conditions associated with
the ongoing active hurricane era still favor an above-normal season."
Bell also noted
that pre-season storms, such as Subtropical Storm Andrea in early May,
are not an indicator of the hurricane season ahead. "With or without
Andrea, NOAA's forecast is for an above normal season."
"With
expectations for an active season, it is critically important that
people who live in East and Gulf coastal areas as well as the Caribbean
be prepared," said Bill Proenza, NOAA
National Hurricane Center director. "Now is the time to update your
hurricane plan, not when the storm is bearing down on you." (Click
NOAA image for larger view of tracks of major hurricanes forming in the
main development region as indicated by the green box over a 24-year
period. Please credit “NOAA.”)
The Atlantic
hurricane season runs from June 1 through November 30, with peak
activity occurring August through October. The NOAA Climate Prediction
Center will issue an updated seasonal forecast in August just prior to
the historical peak of the season.
The Atlantic
Hurricane Seasonal Outlook is an official forecast product of the NOAA
Climate Prediction Center. Instituted in 1998, this outlook is produced
in collaboration with NOAA scientists at the NOAA Climate Prediction
Center, NOAA National Hurricane Center, NOAA Hurricane Research Division
and the NOAA
Hydrometeorological Prediction Center. The NOAA National Hurricane
Center has hurricane forecasting responsibilities for the Atlantic as
well as the East Pacific basins. The NOAA Climate Prediction Center,
NOAA National Hurricane Center and the NOAA Hydrometeorological
Prediction Center are three of the NOAA National Weather Service's nine
NOAA National Centers for Environmental Prediction, which provides the
United States with first alerts of weather, climate, ocean and space
weather events.
NOAA, an agency
of the U.S. Commerce Department,
is celebrating 200
years of science and service to the nation. From the establishment
of the Survey of the Coast in 1807 by Thomas Jefferson to the formation
of the Weather Bureau and the Commission of Fish and Fisheries in the
1870s, much of America's scientific heritage is rooted in NOAA. NOAA is
dedicated to enhancing economic security and national safety through
the prediction and research of weather and climate-related events and
information service delivery for transportation, and by providing
environmental stewardship of the nation's coastal and marine resources.
Through the emerging Global Earth Observation System of Systems (GEOSS), NOAA is working with
its federal partners, more than 60 countries and the European
Commission to develop a global monitoring network that is as integrated
as the planet it observes, predicts and protects.
Relevant
Web Sites
NOAA
Atlantic Seasonal Hurricane Outlook (Technical Product)
NOAA
2007 Tropical Eastern North Pacific Hurricane Outlook
NOAA National Hurricane Center
NOAA Hurricanes Portal
Behind the
Scenes: The North Atlantic Hurricane Seasonal Outlook
Media Contact:
Carmeyia Gillis, NOAA Climate Prediction Center,
(301) 763-8000 ext. 7163 or Greg
Romano, NOAA National Weather
Service, (301) 713-0622
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