Viewing archive of Friday, 24 April 2026
Solar activity report
Report of Solar-Geophysical Activity 2026 Apr 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 114 Issued at 2200Z on 24 Apr 2026IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z Solar activity has been at high levels for the past 24 hours.
There are currently 7 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be moderate
with a chance for X-class flares on days one and two (25 Apr, 26 Apr)
and likely to be moderate with a slight chance for an X-class flare on
day three (27 Apr).
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 455 km/s at 23/2132Z. Total IMF reached 7
nT at 24/1812Z. The maximum southward component of Bz reached -6 nT at
24/1812Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 5743 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on days one and two (25 Apr, 26
Apr) and quiet to unsettled levels on day three (27 Apr). Protons have a
chance of crossing threshold on day one (25 Apr), are expected to cross
threshold on day two (26 Apr) and have a slight chance of crossing
threshold on day three (27 Apr).
III. Event Probabilities 25 Apr to 27 Apr
| Class M | 75% | 75% | 70% |
| Class X | 35% | 30% | 20% |
| Proton | 25% | 99% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Apr 146 Predicted 25 Apr-27 Apr 152/148/145 90 Day Mean 24 Apr 129
V. Geomagnetic A Indices
Observed Afr/Ap 23 Apr 007/007 Estimated Afr/Ap 24 Apr 006/007 Predicted Afr/Ap 25 Apr-27 Apr 013/018-016/020-008/010
VI. Geomagnetic Activity Probabilities 25 Apr to 27 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 25% |
| Minor storm | 25% | 25% | 05% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 15% |
| Minor storm | 25% | 25% | 30% |
| Major-severe storm | 60% | 60% | 30% |
All times in UTC
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Space weather facts
| Last X-flare | 2026/04/24 | X2.5 |
| Last M-flare | 2026/05/29 | M1.1 |
| Last geomagnetic storm | 2026/05/16 | Kp6- (G2) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2026 | 79.3 -6.6 |
| May 2026 | 96.6 +17.3 |
| Last 30 days | 96.6 +3.7 |
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