Solar wind on July 18, 2025

July 18, 2025

Anchorage change region

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Solar wind parameters

Solar wind speed

540 km/s increased (average for 24 hours)

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

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Solar wind density

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

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

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Solar wind temperature

149 000 K increased (average for 24 hours)

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

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Solar wind magnetic field induction

6 nT normal (average for 24 hours)

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

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The Bz component of the solar wind magnetic field

+1.4 nT positive (average for 24 hours)

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

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