Viewing archive of Thursday, 15 September 2011 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
167 230 -2B8.57C6.6111

Sunspot regions

Region 11287

Number of
sunspots
Size Class Magn. Class Spot Location
4 1 170 90 DSO S27W78

Region 11289

Number of
sunspots
Size Class Magn. Class Spot Location
9 -1 400 50 CHO N24W25

Region 11290

Number of
sunspots
Size Class Magn. Class Spot Location
4 -4 30 -40 CRO S13W38

Region 11292

Number of
sunspots
Size Class Magn. Class Spot Location
2 -3 30 -20 CRO N08E24

Region 11293

Number of
sunspots
Size Class Magn. Class Spot Location
3 20 10 CSO N18W38

Region 11294

Number of
sunspots
Size Class Magn. Class Spot Location
7 2 50 30 CSO S17W02

Region 11295

Number of
sunspots
Size Class Magn. Class Spot Location
4 2 50 20 CSO N20E51

Region 11296

Number of
sunspots
Size Class Magn. Class Spot Location
3 1 60 10 DSO N26E55

Solar flares on this day

C1.51

Region 11297

Number of
sunspots
Size Class Magn. Class Spot Location
4 40 DAO S16W52

Solar flares on this day

C6.61 C3.28 C3.8

Region 11298

Number of
sunspots
Size Class Magn. Class Spot Location
4 40 CSO N16E52

All times in UTC

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G2 - Moderate geomagnetic storm

Observed Kp: 6
Threshold reached: 20:16 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, Sodankylä, Utsjoki
Kirkenes, Tromsø
Arkhangelsk, Murmansk, Norilsk, Vorkuta
Kiruna, Luleå
The solar wind speed is currently moderately high (639.6 km/sec.)
The strength of the interplanetary magnetic field is moderate (17.24nT), the direction is North (9.14nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-85nT)
The maximum X-ray flux of the past two hours is:
C7.01

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Latest alerts

20:30 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 20:08 UTC

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20:15 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 20:00 UTC

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18:00 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 17:00 UTC

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17:00 UTC - Geomagnetic activity

Minor G1 geomagnetic storm (Kp5) Threshold Reached: 16:28 UTC

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14:15 UTC - Geomagnetic activity

Moderate G2 geomagnetic storm (Kp6) Threshold Reached: 13:58 UTC

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Space weather facts

Last X-flare2025/02/23X2.0
Last M-flare2025/03/26M1.0
Last geomagnetic storm2025/03/22Kp6- (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025135 -19.6
Last 30 days133.7 -19.9

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*since 1994

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