Viewing archive of Wednesday, 21 November 2018
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2018 Nov 21 1230 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 | |
|---|---|---|
| 21 Nov 2018 | 071 | 013 |
| 22 Nov 2018 | 071 | 017 |
| 23 Nov 2018 | 071 | 011 |
Bulletin
Solar X-ray flux remained below B level. With no regions on disk chances for C-class flaring are very low.
No Earth directed CMEs have been observed in coronagraph images.
Proton flux levels were at background values and are expected to remain so.
Solar wind speed declined over the period to be mainly in the 400-420 km/s range with lately a further decline to 390 km/s. Total magnetic field saw another period of slight enhancement reaching close to 10nT and now back at around 6nT. Bz was mostly positive and the phi angle was in the negative sector.. Slightly enhanced conditions are expected to continue over the next days related to the Southern coronal hole regions.
Geomagnetic conditions were quiet to unsettled (both local K Dourbes and NOAA Kp 0-3) and are expected to remain so over the next days.
Today's estimated international sunspot number (ISN): 000, based on 17 stations.Solar indices for 20 Nov 2018
| Wolf number Catania | /// |
| 10cm solar flux | 071 |
| AK Chambon La Forêt | 007 |
| AK Wingst | 006 |
| Estimated Ap | 005 |
| Estimated international sunspot number | 000 - Based on 11 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
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