Viewing archive of Saturday, 18 July 2020
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2020 Jul 18 1231 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 | |
|---|---|---|
| 18 Jul 2020 | 068 | 006 |
| 19 Jul 2020 | 068 | 005 |
| 20 Jul 2020 | 068 | 007 |
Bulletin
Solar activity was at very low levels and is expected to remain so.
No earth-directed coronal mass ejections (CMEs) were observed in the available coronagraphic imagery.
The greater than 10 MeV proton flux was at nominal levels and the greater than 2 MeV electron flux was at nominal to moderate levels during the last 24 hours and are expected to remain so for the next 24 hours.
The solar wind speed ranged between 360 and 450 km/s (DSCOVR) over the past 24 hours. The total magnetic field was at or below 6 nT. Bz ranged between -5 and +5 nT. The direction of the interplanetary magnetic field (phi angle) was mostly directed away from the Sun (positive sector). For the next 24 hours the solar wind speed is expected to remain at nominal levels. An extension to the southern polar coronal hole and a small patchy positive polarity equatorial coronal hole, which began to transit the central meridian on Jul 16, may cause a slight enhancement to the solar wind conditions from 20 July.
Geomagnetic activity was mostly quiet (local K Dourbes and NOAA Kp recorded values between 0-3 and 1-2, respectively). Geomagnetic conditions are expected to be mostly quiet on 18 - 20 July, with possible unsettled conditions from late on 20 July.
Today's estimated international sunspot number (ISN): 000, based on 19 stations.Solar indices for 17 Jul 2020
| Wolf number Catania | 000 |
| 10cm solar flux | 068 |
| AK Chambon La Forêt | 010 |
| AK Wingst | 007 |
| Estimated Ap | 005 |
| Estimated international sunspot number | 000 - Based on 24 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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