Viewing archive of Friday, 23 March 2018
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2018 Mar 23 1231 UTC
SIDC Forecast
Solar flares
Quiet conditions (<50% probability of C-class flares)
Geomagnetism
Minor storm expected (A>=30 or K=5)
Solar protons
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 23 Mar 2018 | 068 | 013 |
| 24 Mar 2018 | 068 | 029 |
| 25 Mar 2018 | 068 | 023 |
Bulletin
Solar activity remained at very low levels. The Sun is spotless. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.
Solar activity is expected to stay at very low levels.
Solar wind parameters were at nominal levels until about 16UT, when solar wind became enhanced. Bz turned mostly southward and was at a steady -7 nT from 17UT till 21UT, with short-lived excursions to +8 nT and -9 nT just prior to 20UT (DSCOVR). This coincided with a more firm increase in temperature and speed, the latter gradually rising from about 340 km/s to 460 km/s at 08 UT. Currently, Bz is varying between -3 nT and +2 nT, with wind speeds steady near 440 km/s. The interplanetary magnetic field was predominantly directed towards the Sun. Geomagnetic activity was at quiet to unsettled levels, with an isolated active period observed in Kp (00-03UT) and by Dourbes (18-21UT).
Quiet to unsettled geomagnetic conditions are expected with a chance on another active episode. Minor storming intervals are possible on 24 and 25 March as a result of the expected arrival of the wind stream associated with the extension of the negative polarity southern polar CH.
Today's estimated international sunspot number (ISN): 000, based on 14 stations.Solar indices for 22 Mar 2018
| Wolf number Catania | /// |
| 10cm solar flux | 069 |
| AK Chambon La Forêt | 021 |
| AK Wingst | 007 |
| Estimated Ap | 007 |
| Estimated international sunspot number | 000 - Based on 20 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
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Whitehorse, YTAnchorage, AK, Fairbanks, AK, Juneau, AK
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