Wednesday, September 23, 2020

Busy Atlantic hurricane season predicted for 2020

By on May 22, 2020

SAN JUAN — An above-normal 2020 Atlantic hurricane season is expected, according to forecasters with NOAA’s Climate Prediction Center, a division of the National Weather Service. The outlook predicts a 60% chance of an above-normal season, a 30% chance of a near-normal season and only a 10% chance of a below-normal season. The Atlantic hurricane season runs from June 1 through Nov. 30.

“Hurricane preparedness is critically important for the 2020 hurricane season, just as it is every year. Keep in mind, you may need to adjust any preparedness actions based on the latest health and safety guidelines from the CDC and your local officials,” NOAA said in its media release.

A view from the flight deck of a NOAA WP-3D Hurricane Hunter aircraft as the team flies into Hurricane Harvey on August 24, 2017.
A view from the flight deck of a NOAA WP-3D Hurricane Hunter aircraft as the team flies into Hurricane Harvey on August 24, 2017. (Screen capture of https://www.noaa.gov)

NOAA’s Climate Prediction Center is forecasting a likely range of 13 to 19 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; with winds of 111 mph or higher). NOAA provides these ranges with a 70% confidence. An average hurricane season produces 12 named storms, of which 6 become hurricanes, including 3 major hurricanes. [Watch this video summary of the Outlook.]

A summary infographic showing hurricane season probability and numbers of named storms predicted from NOAA's 2020 Atlantic Hurricane Season Outlook.
A summary infographic showing hurricane season probability and numbers of named storms predicted from NOAA’s 2020 Atlantic Hurricane Season Outlook. (Screen capture of https://www.noaa.gov)

“The combination of several climate factors is driving the strong likelihood for above-normal activity in the Atlantic this year. El Nino Southern Oscillation (ENSO) conditions are expected to either remain neutral or to trend toward La Nina, meaning there will not be an El Nino present to suppress hurricane activity. Also, warmer-than-average sea surface temperatures in the tropical Atlantic Ocean and Caribbean Sea, coupled with reduced vertical wind shear, weaker tropical Atlantic trade winds, and an enhanced west African monsoon all increase the likelihood for an above-normal Atlantic hurricane season. Similar conditions have been producing more active seasons since the current high-activity era began in 1995,” reads the news release.

NOAA’s outlook is for overall seasonal activity and is not a landfall forecast. The Climate Prediction Center will update the 2020 Atlantic seasonal outlook in August prior to the historical peak of the season. 

NOAA said it is upgrading products and tools such as the hurricane-specific Hurricane Weather Research and Forecast system (HWRF) and the Hurricanes in a Multi-scale Ocean coupled Non-hydrostatic model (HMON) models this summer.

“HWRF will incorporate new data from satellites and radar from NOAA’s coastal Doppler data network to help produce better forecasts of hurricane track and intensity during the critical watch and warning time frame. HMON will undergo enhancements to include higher resolution, improved physics, and coupling with ocean models,” the agency explained.

A summary graphic showing an alphabetical list of the 2020 Atlantic tropical cyclone names as selected by the World Meteorological Organization. The first named storm of the season, Arthur, occurred in earlier in May before the NOAA's outlook was announced. The official start of the Atlantic hurricane season is June 1 and runs through November 30.
A summary graphic showing an alphabetical list of the 2020 Atlantic tropical cyclone names as selected by the World Meteorological Organization. The first named storm of the season, Arthur, occurred in earlier in May before the NOAA’s outlook was announced. (Screen capture of https://www.noaa.gov)

“Social distancing and other CDC guidance to keep you safe from COVID-19 may impact the disaster preparedness plan you had in place, including what is in your go-kit, evacuation routes, shelters and more. With tornado season at its peak, hurricane season around the corner, and flooding, earthquakes and wildfires a risk year-round, it is time to revise and adjust your emergency plan now,” said Carlos Castillo, acting deputy administrator for resilience at FEMA. “Natural disasters won’t wait, so I encourage you to keep COVID-19 in mind when revising or making your plan for you and your loved ones, and don’t forget your pets. An easy way to start is to download the FEMA app today.”

In addition to the Atlantic hurricane season outlook, NOAA also issued seasonal hurricane outlooks for the eastern and central Pacific basins.

Visit the National Hurricane Center’s website at hurricanes.gov throughout the season to stay current on any watches and warnings.

You must be logged in to post a comment Login