September 12 marks the peak of the Atlantic Ocean hurricane season, but this year the day passed without any named storms. Odder still, the recently restless Pacific Ocean had a quiet day, too. In fact, across the entire Northern Hemisphere, not a single tropical storm swirled.
This is the first September 12 without a major cyclone since 1977, says Philip Klotzbach, a meteorologist at Colorado State University in Fort Collins. Tropical Storm Vamco’s formation on Sunday ended the 54-hour serenity, the longest September dearth of tropical cyclones since 2009, Klotzbach adds.
While the ongoing El Niño will help calm the Atlantic (SN Online: 7/12/15), those same conditions will probably keep the Pacific churning out titanic typhoons for the next few months (SN: 5/2/15, p. 36).