Viewing archive of Sunday, 25 April 1999

The operational data in the graph above has been modified to remove the scaling factor that has been applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor in the operational data, flare indices for the operational data were reported as 42% smaller than for the science quality data. The scaling factor has also been removed from the solar flare list to reflect the true physical units.
The archive is not available for this date.

All times in UTC

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Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Iqaluit, NU
Nuuk
Reykjavik
Tromsø
Kiruna
The solar wind speed is currently moderately high (582.5 km/sec.)
The maximum X-ray flux of the past two hours is:
M1.79

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00:00 UTC - Solar flare

Moderate M1.79 flare

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Friday, 28 March 2025
23:36 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.04)


21:24 UTC - Hemispheric Power Index

The OVATION model predicts the Hemispheric Power Index to reach 51GW at 21:59 UTC


19:45 UTC - Solar flare

Moderate M1.16 flare

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19:27 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.1)


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