GOES satellites measured a M1.4-class solar flare peaking at 2026-09-02T19:11:00Z (X-ray flux 1.4e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.0-class solar flare peaking at 2026-08-26T12:14:00Z (X-ray flux 1.0e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M2.2-class solar flare peaking at 2026-08-26T06:34:00Z (X-ray flux 2.2e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M7.0-class solar flare peaking at 2026-08-25T10:02:00Z (X-ray flux 7.0e-5 W/m2, radio-blackout scale ~R2). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M2.0-class solar flare peaking at 2026-08-25T01:26:00Z (X-ray flux 2.0e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.3-class solar flare peaking at 2026-08-24T19:27:00Z (X-ray flux 1.3e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.4-class solar flare peaking at 2026-08-21T09:41:00Z (X-ray flux 1.4e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M8.1-class solar flare peaking at 2026-08-20T11:42:00Z (X-ray flux 8.1e-5 W/m2, radio-blackout scale ~R2). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.3-class solar flare peaking at 2026-08-20T07:56:00Z (X-ray flux 1.3e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.0-class solar flare peaking at 2026-08-19T18:51:00Z (X-ray flux 1.0e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
Planetary Kp index has reached 5.3, which is NOAA level G1 (Minor geomagnetic storm). Aurora likely at high latitudes (northern-tier US states, Scotland, Scandinavia, Canada). Possible impacts: minor power grid fluctuations, minor satellite operation impacts, migratory animals affected.
Planetary Kp index has reached 5.0, which is NOAA level G1 (Minor geomagnetic storm). Aurora likely at high latitudes (northern-tier US states, Scotland, Scandinavia, Canada). Possible impacts: minor power grid fluctuations, minor satellite operation impacts, migratory animals affected.
Planetary Kp index has reached 5.3, which is NOAA level G1 (Minor geomagnetic storm). Aurora likely at high latitudes (northern-tier US states, Scotland, Scandinavia, Canada). Possible impacts: minor power grid fluctuations, minor satellite operation impacts, migratory animals affected.
Planetary Kp index has reached 5.7, which is NOAA level G1 (Minor geomagnetic storm). Aurora likely at high latitudes (northern-tier US states, Scotland, Scandinavia, Canada). Possible impacts: minor power grid fluctuations, minor satellite operation impacts, migratory animals affected.
Proton flux (>=10 MeV) has reached 10 pfu - NOAA scale S1. Radiation storms mainly affect satellites, astronauts and passengers/crew on polar flight routes; they can also degrade HF radio in polar regions.
Proton flux (>=10 MeV) has reached 11 pfu - NOAA scale S1. Radiation storms mainly affect satellites, astronauts and passengers/crew on polar flight routes; they can also degrade HF radio in polar regions.
GOES satellites measured a M1.1-class solar flare peaking at 2026-07-27T02:43:00Z (X-ray flux 1.1e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.5-class solar flare peaking at 2026-07-26T15:26:00Z (X-ray flux 1.5e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
Planetary Kp index has reached 5.3, which is NOAA level G1 (Minor geomagnetic storm). Aurora likely at high latitudes (northern-tier US states, Scotland, Scandinavia, Canada). Possible impacts: minor power grid fluctuations, minor satellite operation impacts, migratory animals affected.
GOES satellites measured a M3.5-class solar flare peaking at 2026-07-22T06:34:00Z (X-ray flux 3.5e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.9-class solar flare peaking at 2026-07-21T17:27:00Z (X-ray flux 1.9e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M3.5-class solar flare peaking at 2026-07-20T22:25:00Z (X-ray flux 3.5e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M2.5-class solar flare peaking at 2026-07-20T14:36:00Z (X-ray flux 2.5e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.2-class solar flare peaking at 2026-07-12T08:11:00Z (X-ray flux 1.2e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.2-class solar flare peaking at 2026-07-09T02:27:00Z (X-ray flux 1.2e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M1.6-class solar flare peaking at 2026-07-08T17:56:00Z (X-ray flux 1.6e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
GOES satellites measured a M4.0-class solar flare peaking at 2026-07-07T14:19:00Z (X-ray flux 4.0e-5 W/m2, radio-blackout scale ~R1). Flares cause immediate shortwave radio blackouts on Earth's sunlit side. If this flare launched a CME toward Earth, a geomagnetic storm could follow in 1-3 days - worth watching the Kp index.
