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Viewing archive of Monday, 25 September 2017 - Sunspot regions

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Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum flux
36 141B1.57B8.54

Sunspot regions

Region 12681

Number of
sunspots		 Size Class Magn. Class Spot Location
1 -1 90 HSX S13E19
HMIIF
HMIBC

Solar flares on this day

B7.78 B8.18

Region 12682

Number of
sunspots		 Size Class Magn. Class Spot Location
1 180 HSX S09E71
HMIIF
HMIBC

All times in UTC

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G1 - Minor geomagnetic storm

Observed Kp: 5
Threshold reached: 21:40 UTC

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

Oulu, Rovaniemi
Luleå
The density of the solar wind is moderate (25.86 p/cm3)
The strength of the interplanetary magnetic field is moderate (11.73nT), the direction is North (5.92nT).
The Disturbance Storm Time index predicts strong storm conditions right now (-132nT)

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Latest alerts

21:45 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 21:36 UTC

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21:00 UTC - Geomagnetic activity

Severe G4 geomagnetic storm (Kp8) Threshold Reached: 20:55 UTC

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19:45 UTC - Geomagnetic activity

Strong G3 geomagnetic storm (Kp7) Threshold Reached: 19:25 UTC

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19:00 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 18:38 UTC

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18:45 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 18:28 UTC

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Space weather facts

Last X-flare2025/03/28X1.1
Last M-flare2025/04/15M1.2
Last geomagnetic storm2025/04/15Kp6+ (G2)
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Last spotless day2022/06/08
Monthly mean Sunspot Number
March 2025134.2 -20.4
April 2025124.1 -10.1
Last 30 days122.5 -17.8

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