Viewing archive of Saturday, 18 November 2023
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2023 Nov 18 1231 UTC
SIDC Forecast
Solar flares
M-class flares expected (probability >=50%)
Geomagnetism
Quiet (A<20 and K<4)
Solar protons
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 18 Nov 2023 | 120 | 007 |
| 19 Nov 2023 | 122 | 007 |
| 20 Nov 2023 | 126 | 007 |
Solar Active Regions and flaring
There are two active regions visible on the disk. The strongest flare was an M1.2 from an unnumbered region on the east limb, peaking at 05:42 UTC. More M-class flares are possible in the next 24 hours.
Coronal mass ejections
No Earth directed CMEs were observed in the last 24 hours.
Coronal holes
Two coronal holes crossed the central meridian in the past 24 hours, one with negative polarity at high northern latitudes and an equatorial one with positive polarity.
Solar wind
The Earth is immersed in slow solar wind, over the last 24 hours solar wind speed has decreased to 300 km/s and the interplanetary magnetic field is around 5 nT. Same conditions are expected for the next 24 hours.
Geomagnetism
During the last 24 hours the geomagnetic conditions were quiet globally and locally (NOAA KP 1, K_Bel 1). Mostly quiet conditions are expected for the next 24 hours.
Proton flux levels
Over the past 24 hours the greater than 10 MeV GOES proton flux was below threshold and is expected to remain so over the next 24 hours.
Electron fluxes at geostationary orbit
The greater than 2 MeV electron flux was below the 1000 pfu threshold, as measured by GOES 16. It is expected to remain so in the next 24 hours. The 24 hour electron fluence was at normal levels, it is expected to stay at those levels for the next 24 hours.
Today's estimated international sunspot number (ISN): 033, based on 07 stations.
Solar indices for 17 Nov 2023
| Wolf number Catania | 040 |
| 10cm solar flux | 120 |
| AK Chambon La Forêt | 005 |
| AK Wingst | 004 |
| Estimated Ap | 003 |
| Estimated international sunspot number | 027 - Based on 23 stations |
Noticeable events summary
| Day | Begin | Max | End | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types |
|---|---|---|---|---|---|---|---|---|---|
| 18 | 0537 | 0542 | 0550 | ---- | M1.2 | --/---- |
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
All times in UTC
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