Hurricane Season Forecast 2027: Dates & NHC Tracker

12027 Atlantic & Eastern Pacific Hurricane Season Dates and Climatological Peak

The official Atlantic basin hurricane season—covering the North Atlantic Ocean, the Caribbean Sea, and the Gulf of Mexico—runs annually from June 1 through November 30. In the Eastern North Pacific basin (extending from the west coast of Mexico and Central America out to 140°W longitude), the season begins two weeks earlier on May 15 and concludes on November 30. The NOAA baseline 30-year seasonal average (1991–2020) for the Atlantic basin is 14 named storms, 7 hurricanes, and 3 major hurricanes (Category 3, 4, or 5).

However, tropical cyclone risk is not distributed evenly across the six-month calendar. Roughly 78% of all Atlantic tropical storm days, 87% of Category 1 and 2 hurricane days, and an extraordinary 95% of all Major Hurricane (Category 3–5) days occur within the 10-week window between August 15 and October 24. The statistical climatological peak of the Atlantic hurricane season occurs on September 10, when equatorial Atlantic Sea Surface Temperatures (SSTs) exceed 82°F (28°C), mid-level Saharan dry air (the Saharan Air Layer) subsides, and vertical wind shear across the Caribbean and Main Development Region drops to its annual minimum.

Early-season storms in June and July typically form close to home in the Gulf of Mexico, the Western Caribbean, or along stalled frontal boundaries off the Southeast US coast, whereas August and September feature long-track 'Cape Verde' hurricanes that originate from African Easterly Waves rolling off the coast of Senegal and Cabo Verde.

• Early Season (June 1 – July 31): Homegrown Gulf of Mexico and Southeast US coast formations; heavy rainfall is usually the primary threat.
• Peak Cabo Verde Window (August 15 – September 30): Long-track Category 3–5 major hurricanes crossing the Lesser Antilles, Caribbean, Gulf, and US East Coast.
• Late Season Secondary Peak (October 1 – November 30): Western Caribbean and Gulf of Mexico formations curving northeastward toward Cuba, Florida, and the Carolinas.

2Official 2027 Atlantic Hurricane Names (WMO Rotating Roster & Retired Replacements)

Tropical cyclones in the Atlantic basin are named by the National Hurricane Center using six rotating alphabetical lists maintained by the World Meteorological Organization (WMO) Regional Association IV Hurricane Committee. The 2027 list is the modernized version of the 2021 roster—Except that destructive 2021 storms **Ida** (which caused $75+ billion in damage across Louisiana and the Northeast) were permanently retired by the WMO and replaced with **Imani** for 2027.

The complete 21-name 2027 Atlantic Tropical Cyclone Roster is: **Ana, Bill, Claudette, Danny, Elsa, Fred, Grace, Henri, Imani, Julian, Kate, Larry, Mindy, Nicholas, Odette, Peter, Rose, Sam, Teresa, Victor, and Wanda**. If an hyperactive season exhausts all 21 standard names, the WMO no longer uses the Greek alphabet (which was retired after the 2020 season due to public confusion between Zeta, Eta, and Theta); instead, NHC activates the official WMO Supplemental Atlantic Name List beginning with Adria, Braylen, Caridad, Deshawn, and Emery.

3Where to Check Official NHC Updates & How to Read the Forecast Cone Properly

During an active tropical threat, social media feeds often circulate raw, cherry-picked single deterministic computer model runs (such as a single 10-day GFS or ECMWF operational frame) showing extreme hypothetical scenarios. Institutional emergency managers rely exclusively on official National Hurricane Center (nhc.noaa.gov) products issued every 6 hours at 5:00 AM, 11:00 AM, 5:00 PM, and 11:00 PM EDT (with intermediate advisories every 2 to 3 hours when coastal watches or warnings are active).

When reading the NHC Track Forecast Cone, remember that the cone represents the probable path of the storm's **center** based on the previous 5 years of official NHC track errors— such that the center stays inside the cone roughly two-thirds (67%) of the time. It is NOT an impact cone: life-threatening storm surge, tropical-storm-force winds, and tornado-producing outer rainbands routinely extend 150 to 300 miles outside the white cone boundary. That is why NHC's upgraded 2026–2027 experimental graphic overlays inland county wind watches and warnings directly onto the cone map.