Solar wind on September 18, 2025

September 18, 2025

Salluit change region

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Solar wind parameters

Solar wind speed

509 km/s increased (average for 24 hours)

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

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Solar wind density

0.95 cm^-3 low (average for 24 hours)

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

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Solar wind temperature

76 000 K normal (average for 24 hours)

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

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Solar wind magnetic field induction

3 nT normal (average for 24 hours)

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

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The Bz component of the solar wind magnetic field

+0.9 nT positive (average for 24 hours)

The Bz component of the solar wind magnetic field for September 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 September 17 and 18, 2025.

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