1973 - 45; 1983 - 51; 1984 - 65; 1998 - 53; 2024 - 58 "4 of the 5 years ended up with below-average Northern Hemisphere named storms, but 2024 was just slightly below normal," he said.

Its measurements represent the average state of the atmosphere in the northern hemisphere. Scripps scientist Charles David Keeling, Ralph Keeling's father, began monitoring CO2 concentrations ...

JACKSONVILLE, Fla. — The 2025 tropical cyclone season is off to an unusually calm start across the Northern Hemisphere, marking the slowest beginning to the season since 1973, just over half a ...

JACKSONVILLE, Fla. — The 2025 tropical cyclone season is off to an unusually calm start across the Northern Hemisphere, marking the slowest beginning to the season since 1973, just over half a ...

JACKSONVILLE, Fla. — Tropical Storm Alvin has officially become the first named tropical cyclone of the year in the Northern Hemisphere, forming this week in the Eastern Pacific and ...

JACKSONVILLE, Fla. — Tropical Storm Alvin has officially become the first named tropical cyclone of the year in the Northern Hemisphere, forming this week in the Eastern Pacific and ...

The northern lights — also called aurora borealis — could be visible in Alaska, Washington, Montana, North Dakota, Minnesota, Michigan, Maine, northern parts of Idaho, Wyoming, Iowa, New York ...

There have been 0 Northern Hemisphere named storms (e.g., >=39 mph) so far in 2025. 5 other years since 1950 have had 0 Northern Hemisphere named storms through 15 May: 1973, 1983, 1984, 1998, and ...