Viewing archive of Tuesday, 26 April 2022
Solar activity report
Report of Solar-Geophysical Activity 2022 Apr 27 1915 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 116 Issued at 2200Z on 26 Apr 2022IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z
Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
26/1624Z. There are currently 8 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
days one, two, and three (27 Apr, 28 Apr, 29 Apr).
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 559 km/s at 26/0144Z. Total IMF reached 5 nT at
26/0904Z. The maximum southward component of Bz reached -4 nT at
26/1123Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 591 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (27 Apr, 28 Apr) and unsettled
to minor storm levels on day three (29 Apr). Protons have a slight
chance of crossing threshold on days one, two, and three (27 Apr, 28
Apr, 29 Apr).
III. Event Probabilities 27 Apr to 29 Apr
| Class M | 30% | 30% | 30% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Apr 150 Predicted 27 Apr-29 Apr 148/145/130 90 Day Mean 26 Apr 119
V. Geomagnetic A Indices
Observed Afr/Ap 25 Apr 004/004 Estimated Afr/Ap 26 Apr 004/004 Predicted Afr/Ap 27 Apr-29 Apr 005/005-005/005-013/018
VI. Geomagnetic Activity Probabilities 27 Apr to 29 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 40% |
| Minor storm | 01% | 01% | 25% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 20% | 20% | 25% |
| Major-severe storm | 20% | 20% | 60% |
All times in UTC
Latest news
Wednesday, 14 May 2025
Another X-flare! Potent sunspot region 4087!
Tuesday, 13 May 2025
X1.1 solar flare from sunspot region 4086
Tuesday, 15 April 2025
CME arrival, G3 storm watch
Latest forum messages
AR 14093 12Have you ever dreamed of the sun? 46Upper atmosphere phenomena Red sprites and Blue jets 24AR 14095 2Filaments and prominences 172
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2025/05/14 | X2.7 |
| Last M-flare | 2025/05/21 | M1.2 |
| Last geomagnetic storm | 2025/05/17 | Kp6+ (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2025 | 140.6 +6.4 |
| May 2025 | 69.6 -71 |
| Last 30 days | 86.9 -26 |