Viewing archive of Tuesday, 9 April 2024
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2024 Apr 09 1231 UTC
SIDC Forecast
Solar flares
C-class flares expected, (probability >=50%)
Geomagnetism
Quiet (A<20 and K<4)
Solar protons
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 09 Apr 2024 | 126 | 013 |
| 10 Apr 2024 | 127 | 009 |
| 11 Apr 2024 | 128 | 013 |
Solar Active Regions and flaring
Solar flaring activity over the last 24h has been low, with a single C1.0 flare peaking at 03:53 UTC on April 9th. There are currently six active regions on the solar disk with NOAA AR 3633 (beta-gamma) being the most complex one. NOAA AR 3630 has now decayed into plage as it is rotating behind the west. A simple region in the north-east quadrant has been numbered as NOAA AR 3634 (alpha) and a new active region is currently rotating from the north-east limb. The solar flaring activity is expected to be at low levels over the next 24 hours, with C-class flares probable.
Coronal mass ejections
No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph observations in the last 24 hours.
Coronal holes
A small, mid-latitude, negative polarity coronal hole began to cross the central meridian around 07:00 UTC on April 9th.
Solar wind
The Earth is inside the slow solar wind, with speed values ranging from 350 km/s to 400 km/s and an interplanetary magnetic field around 8nT. The minimum Bz value was -7nT. Mostly slow solar wind conditions are expected over the next 24 hours.
Geomagnetism
Geomagnetic conditions were globally and locally at quiet levels or unsettled levels (NOAA_Kp and K_BEL 0 to 3). Similar conditions are expected in the next 24 hours.
Proton flux levels
The greater than 10 MeV proton flux was below the threshold level over the past 24 hours and is expected to remain so for the next 24 hours.
Electron fluxes at geostationary orbit
The greater than 2 MeV electron flux was below the threshold level in the last 24 hours. The 24h electron fluence is presently at normal levels and is expected to remain so in the coming 24 hours.
Today's estimated international sunspot number (ISN): 057, based on 16 stations.Solar indices for 08 Apr 2024
| Wolf number Catania | 110 |
| 10cm solar flux | 125 |
| AK Chambon La Forêt | 009 |
| AK Wingst | 006 |
| Estimated Ap | 006 |
| Estimated international sunspot number | 076 - 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
Latest news
X1.5 solar flare
M2.7 solar flare, CME arrival possible
Complex sunspot region 4366
Latest forum messages
Support SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Solar activity or if there is a chance to see the aurora, but with more traffic comes higher costs to keep the servers online. If you like SpaceWeatherLive and want to support the project you can choose a subscription for an ad-free site or consider a donation. With your help we can keep SpaceWeatherLive online!
Space weather facts
| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/04 | M1.3 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 133.3 +47.4 |
| Last 30 days | 96.9 +35.1 |