Viewing archive of Friday, 27 February 2026
Solar activity report
Report of Solar-Geophysical Activity 2026 Feb 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 58 Issued at 2200Z on 27 Feb 2026IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z 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 low with
a chance for M-class flares on days one, two, and three (28 Feb, 01 Mar,
02 Mar).
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 572 km/s at 26/2140Z. Total IMF reached 5
nT at 26/2114Z. The maximum southward component of Bz reached -4 nT at
27/1332Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 11786 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (28 Feb) and unsettled to
active levels on days two and three (01 Mar, 02 Mar).
III. Event Probabilities 28 Feb to 02 Mar
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Feb 139 Predicted 28 Feb-02 Mar 140/140/145 90 Day Mean 27 Feb 149
V. Geomagnetic A Indices
Observed Afr/Ap 26 Feb 014/018 Estimated Afr/Ap 27 Feb 010/012 Predicted Afr/Ap 28 Feb-02 Mar 010/010-015/018-014/016
VI. Geomagnetic Activity Probabilities 28 Feb to 02 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 40% | 35% |
| Minor storm | 05% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 30% | 30% | 25% |
| Major-severe storm | 30% | 55% | 50% |
All times in UTC
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Space weather facts
| Last X-flare | 2026/02/04 | X4.21 |
| Last M-flare | 2026/02/25 | M2.4 |
| Last geomagnetic storm | 2026/02/22 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (5%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| Last 30 days | 72.7 -45.8 |