Viewing archive of Thursday, 30 July 2015
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2015 Jul 30 1230 UTC
SIDC Forecast
Solar flares
Quiet conditions (<50% probability of C-class flares)
Geomagnetism
Active conditions expected (A>=20 or K=4)
Solar protons
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 30 Jul 2015 | 101 | 011 |
| 31 Jul 2015 | 101 | 010 |
| 01 Aug 2015 | 101 | 007 |
Bulletin
Solar activity is low, no C-class flares in past 24 h. NOAA AR 2390 has decreased in size and complexity, no large flares expected.
Geomagnetic conditions are quiet, with solar wind speeds around 350 km/s and interplanetary magnetic field magnitudes of 5 nT. The fast solar wind from a coronal hole is expected to arrive within 48h, up to minor storm periods are possible.
Today's estimated international sunspot number (ISN): 087, based on 21 stations.Solar indices for 29 Jul 2015
| Wolf number Catania | 094 |
| 10cm solar flux | 101 |
| AK Chambon La Forêt | 012 |
| AK Wingst | 007 |
| Estimated Ap | 006 |
| Estimated international sunspot number | 074 - Based on 31 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
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