Viewing archive of Monday, 26 August 2013
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2013 Aug 26 1218 UTC
SIDC Forecast
Solar flares
Quiet conditions (<50% probability of C-class flares)
Geomagnetism
Quiet (A<20 and K<4)
Solar protons
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 26 Aug 2013 | 113 | 007 |
| 27 Aug 2013 | 113 | 007 |
| 28 Aug 2013 | 114 | 007 |
Bulletin
There are currently 4 numbered AR on the solar disk, C-class (or higher) flaring is unlikely. Solar wind speed is around 350 km/s and the interplanetary magnetic field Bz component is around -3 nT. Geomagnetic conditions are quiet and are expected to remain so for the next 48 hours.
Today's estimated international sunspot number (ISN): 029, based on 12 stations.Solar indices for 25 Aug 2013
| Wolf number Catania | /// |
| 10cm solar flux | 113 |
| AK Chambon La Forêt | 011 |
| AK Wingst | 008 |
| Estimated Ap | 008 |
| Estimated international sunspot number | 033 - Based on 12 stations |
Noticeable events summary
| Day | Begin | Max | End | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types | |
|---|---|---|---|---|---|---|---|---|---|---|
| None | ||||||||||
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
All times in UTC
Latest news
X1.1 solar flare
Coronal hole faces Earth
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
Support SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Latest alerts
Thursday, 10 April 2025
23:00 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 22:47 UTC
20:45 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 21:37 UTC
01:45 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 01:41 UTC
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/08 | M1.5 |
| Last geomagnetic storm | 2025/04/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 141.4 +7.2 |
| Last 30 days | 137.9 +0.4 |