Viewing archive of Saturday, 27 April 2013
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2013 Apr 27 1102 UTC
SIDC Forecast
Solar flares
Eruptive (C-class flares expected, probability >=50%)
Geomagnetism
Quiet (A<20 and K<4)
Solar protons
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 27 Apr 2013 | 122 | 007 |
| 28 Apr 2013 | 122 | 007 |
| 29 Apr 2013 | 122 | 007 |
Bulletin
Flaring activity is expected to decrease as NOAA AR 1726 (Cat 51) is rotating further behind the limb. NOAA AR 1731 is relatively quiet up till now, despite a beta-gamma configuration. We are still inside a speed solar wind stream but most of the resulting geomagnetic activity is behind us. Quiet geomagnetic conditions are expected in the coming days.
Today's estimated international sunspot number (ISN): 075, based on 09 stations.Solar indices for 26 Apr 2013
| Wolf number Catania | /// |
| 10cm solar flux | 122 |
| AK Chambon La Forêt | 024 |
| AK Wingst | 018 |
| Estimated Ap | 020 |
| Estimated international sunspot number | 076 - Based on 17 stations |
Noticeable events summary
| Day | Begin | Max | End | Loc | Strength | OP | 10cm | Radio burst types | Catania/NOAA | |
|---|---|---|---|---|---|---|---|---|---|---|
| None | ||||||||||
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
All times in UTC
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