NOAA predicts above- average hurricane season
Published 12:05 am Saturday, May 27, 2017
Forecasters at NOAA’s Climate Prediction Center say the Atlantic could see another above-normal hurricane season this year.
For the upcoming Atlantic hurricane season, which runs from June 1 through Nov. 30, forecasters predict a 45 percent chance of an above-normal season, a 35 percent chance of a near-normal season, and only a 20 percent chance of a below-normal season.
“As a Florida resident, I am particularly proud of the important work NOAA does in weather forecasting and hurricane prediction,” said U.S. Secretary of Commerce Wilbur Ross. “These forecasts are important for both public safety and business planning, and are a crucial function of the federal government.”
Forecasters predict a 70 percent likelihood of 11 to 17 named storms (winds of 39 mph or higher), of which 5 to 9 could become hurricanes (winds of 74 mph or higher), including 2 to 4 major hurricanes (Category 3, 4 or 5; winds of 111 mph or higher). An average season produces 12 named storms of which six become hurricanes, including three major hurricanes.
These numbers include Tropical Storm Arlene, a rare pre-season storm that formed over the eastern Atlantic in April.
“The outlook reflects our expectation of a weak or non-existent El Nino, near- or above-average sea-surface temperatures across the tropical Atlantic Ocean and Caribbean Sea, and average or weaker-than-average vertical wind shear in that same region,” said Gerry Bell, Ph.D., lead seasonal hurricane forecaster with NOAA’s Climate Prediction Center.
Strong El Ninos and wind shear typically suppress development of Atlantic hurricanes, so the prediction for weak conditions points to more hurricane activity this year. Also, warmer sea surface temperatures tend to fuel hurricanes as they move across the ocean. However, the climate models are showing considerable uncertainty, which is reflected in the comparable probabilities for an above-normal and near-normal season.
“NOAA’s broad range of expertise and resources support the nation with strong science and service before, during and after each storm to protect lives and property and enhance the national economy as we continue building a Weather-Ready Nation,” said Ben Friedman, acting NOAA administrator. “From our expert modelers to our dedicated forecasters and brave crews of our hurricane hunters, we’ll be here to warn the nation every step of the way this hurricane season.”
That’s a start contrast to the AccuWeather reports season forecast released last month that called for a below-normal hurricane season.
“Regardless of how many storms develop this year, it only takes one to disrupt our lives,” said Acting FEMA Administrator Robert J. Fenton, Jr. “Get ready now with these easy, low-cost steps that will leave you better prepared and will make all the difference: Have a family discussion about what you will do, where you will go and how you will communicate with each other when a storm threatens; Know your evacuation route; tune into your local news or download the FEMA app to get alerts, and finally – listen to local authorities as a storm approaches.”
The 2016 season was the most active since 2012, with 15 named storms, including 7 hurricanes and 4 major hurricanes.