Viewing archive of Thursday, 28 January 2010
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2010 Jan 28 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 028 Issued at 2200Z on 28 Jan 2010IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity was very low. Region 1041 (S26W32) was
mostly quiet and stable producing only a few B-class flares,the
largest a B4.0 at 28/0649Z.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low for the next three days (29-31 January) with
only a slight chance for a C-class flare from Region 1041.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field has been quiet for the past 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next three days (29-31 January).
III. Event Probabilities 29 Jan to 31 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Jan 076 Predicted 29 Jan-31 Jan 076/076/076 90 Day Mean 28 Jan 077
V. Geomagnetic A Indices
Observed Afr/Ap 27 Jan 000/002 Estimated Afr/Ap 28 Jan 001/004 Predicted Afr/Ap 29 Jan-31 Jan 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 29 Jan to 31 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
Latest news
Tuesday, 14 May 2024
X8.7 solar flare
Monday, 13 May 2024
M6.6 solar flare with earth-directed CME
Sunday, 12 May 2024
Small CME impact, Record visitor amount
Latest forum messages
Incoming Active Regions 305AR3664 1031Trying to identify if this is STEVE? 8That was close..? 39Filaments and prominences 121
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 | 2024/05/15 | X3.3 |
| Last M-flare | 2024/05/14 | M4.4 |
| Last geomagnetic storm | 2024/05/13 | Kp6 (G2) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| April 2024 | 136.5 +31.6 |
| May 2024 | 151.7 +15.2 |
| Last 30 days | 176.8 +77.8 |