The flare, which hit an X7.1-class in strength, is the second-strongest solar flare we have seen so far this solar cycle, and sparked shortwave radio blackouts over Hawaii and the Pacific Ocean.

Shortwave radio blackouts observed over the sunlit portion of Earth at the time of the X-flare eruption. (Image credit: NOAA SWPC) Powerful solar flares like the one observed this morning can ...

Radio blackouts After an X-class solar flare erupted, shortwave radio blackouts were detected across the Americas — the sunlit side of Earth at the time.

It unleashed another M6.4 flare early on June 16 at 5:30 a.m. EDT (0930 GMT) and remains in an Earth-facing position. More solar flares — and possibly more CMEs — could erupt in the coming days.

It's at it again! Sunspot region 4114 has fired off its strongest blast yet — an X1.2-class solar flare that erupted on June 17, triggering radio blackouts across the Pacific Ocean region ...

Stock image of a solar flare. A powerful solar flare on New Year's Eve is still causing radio blackouts. ISTOCK / GETTY IMAGES PLUS These flares are rated based on their power on a scale of A, B ...

Strongest solar flare of 2025 erupts from sun, sparking radio blackouts across Europe, Asia and the Middle East (video) Powerful X-class solar flare erupts from sun, knocking out radio signals ...

Solar flare eruption (M4.2) from AR3575 on Feb. 5, 2024. (Image credit: NASA/SDO and the AIA, EVE, and HMI science teams) The M-flare caused extensive radio blackouts due to the strong pulse of X ...