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Solar activity report
Report of Solar-Geophysical Activity 2026 Mar 21 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 80 Issued at 2200Z on 21 Mar 2026IA. Analysis of Solar Active Regions and Activity from 20-2100Z to 21-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares and a slight chance for an M-class
flare on days one, two, and three (22 Mar, 23 Mar, 24 Mar).
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
The geomagnetic
field has been at unsettled to severe storm levels for the past 24
hours. Solar wind speed reached a peak of 569 km/s at 21/1147Z. Total
IMF reached 38 nT at 21/1532Z. The maximum southward component of Bz
reached -27 nT at 20/2105Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 315 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to major storm levels on day one (22 Mar), unsettled
to minor storm levels on day two (23 Mar) and quiet to active levels on
day three (24 Mar).
III. Event Probabilities 22 Mar to 24 Mar
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 21 Mar 107 Predicted 22 Mar-24 Mar 108/108/105 90 Day Mean 21 Mar 141
V. Geomagnetic A Indices
Observed Afr/Ap 20 Mar 025/034 Estimated Afr/Ap 21 Mar 033/060 Predicted Afr/Ap 22 Mar-24 Mar 023/036-020/025-013/014
VI. Geomagnetic Activity Probabilities 22 Mar to 24 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 40% | 35% |
| Minor storm | 40% | 30% | 15% |
| Major-severe storm | 25% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 15% | 25% | 25% |
| Major-severe storm | 79% | 65% | 50% |
All times in UTC
Latest news
Monday, 30 March 2026
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Tuesday, 17 March 2026
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Space weather facts
| Last X-flare | 2026/03/30 | X1.4 |
| Last M-flare | 2026/03/28 | M1.3 |
| Last geomagnetic storm | 2026/03/25 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2026 | 78.2 -34.3 |
| March 2026 | 88.4 +10.2 |
| Last 30 days | 88.4 +14.9 |
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