Viewing archive of Friday, 23 September 2011

Sunspot numberNew regionsBackground fluxCM
900C1.393

Solar flares

Region Start Maximum End
- C9.6 00:29 00:33 00:37
1295 M1.6 01:47 01:59 02:10
1295 C2.7 08:13 08:19 08:33
1295 C6.9 08:40 08:50 09:20
1296 C3.2 12:10 12:23 12:40
1302 C2.1 15:01 15:06 15:08
- C3.0 18:11 18:22 18:35
1302 C3.4 19:06 19:11 19:16
1295 C2.2 20:46 20:49 20:52
1295 C9.6 21:29 21:43 21:48
1295 M1.6 21:54 22:15 22:34
1302 M1.9 23:48 23:56 00:04

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Current data suggest that it is not possible to see aurora now at middle latitudes
Active geomagnetic conditions
Observed Kp: 4
The solar wind speed is currently moderately high (638.9 km/sec.)

Latest news

Today's space weather

Auroral activity Minor Severe
High latitude 25% 55%
Middle latitude 25% 5%
Predicted Kp max 5
Solar activity
M-class solar flare 1%
X-class solar flare 1%
Moon phase
New Moon

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2017/12/17Kp5 (G1)
Number of spotless days in 2017:99
Current stretch spotless days:6

This day in history*

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*since 1994