Viewing archive of Thursday, 18 August 2011 - Sunspot regions

Sunspot regions

Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
Sunspot number New regionsBackground fluxMaximum fluxC
53 90 -1B2.71C2.334

Sunspot regions

Region 11271

Number of
sunspots
Size Class Magn. Class Spot Location
9 5 240 ESI N16E50

Solar flares on this day

C2.32 C1.58

Region 11272

Number of
sunspots
Size Class Magn. Class Spot Location
2 60 50 CSO S19E55

Solar flares on this day

C1.78 C1.37

Region 11273

Number of
sunspots
Size Class Magn. Class Spot Location
3 10 BXO S18W03

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
Murmansk
Kiruna, Luleå
The solar wind speed is currently moderately high (597.1 km/sec.)
The strength of the interplanetary magnetic field is moderate (15.84nT), the direction is North (7.3nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-73nT)

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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
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Last spotless day2022/06/08
Monthly mean Sunspot Number
February 2025154.6 +17.6
March 2025135 -19.6
Last 30 days133.7 -19.9

This day in history*

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