Solar wind on December 18, 2025

December 18, 2025

Concord change region

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Solar wind parameters

Solar wind speed

626 km/s high (average for 24 hours)

Solar wind speed for December 17 and 18, 2025, according to data from the ACE spacecraft Solar wind speed for December 17 and 18, 2025.

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Solar wind density

1.3 cm^-3 normal (average for 24 hours)

Solar wind density for December 17 and 18, 2025, according to data from the ACE spacecraft Solar wind density for December 17 and 18, 2025.

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Solar wind temperature

349 000 K high (average for 24 hours)

Solar wind temperature for December 17 and 18, 2025, according to data from the ACE spacecraft Solar wind temperature for December 17 and 18, 2025.

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Solar wind magnetic field induction

5 nT normal (average for 24 hours)

Solar wind magnetic field induction for December 17 and 18, 2025, according to data from the ACE spacecraft Solar wind magnetic field induction for December 17 and 18, 2025.

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The Bz component of the solar wind magnetic field

−0.2 nT negative (average for 24 hours)

The Bz component of the solar wind magnetic field for December 17 and 18, 2025, according to data from the ACE spacecraft. A negative, blue Bz value (southern direction of the field) promotes the development of magnetic storms and northern lights. The Bz component of the solar wind magnetic field for December 17 and 18, 2025.

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