Viewing archive of Sunday, 18 August 2002

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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The strength of the interplanetary magnetic field is moderate (13.94nT), the direction is North (10.76nT).
The maximum X-ray flux of the past two hours is:
M1.31

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Latest alerts

02:06 UTC - Solar flare

Moderate M1.31 flare from sunspot region 4001

alert


01:48 UTC - Radio Blackout

Minor R1 radio blackout in progress (≥M1 - current: M1.29)


Sunday, 23 February 2025
X2.0 solar flare from sunspot region 4001

It has been 53 long days but we have finaly seen another X-class solar flare coming from the Sun today. Sunspot region 3947 produced an X1.8 solar flare on 4th of January and since that day... silence... but today departing sunspot region 4001 produced an X2.0 solar flare.

alert

Read more
19:48 UTC - Solar flare

Major X2.03 flare from sunspot region 3991

alert


19:33 UTC - Radio Blackout

Strong R3 radio blackout in progress (≥X1 - current: X2.03)


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