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% |
All times in UTC
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