Viewing archive of Tuesday, 20 January 2009
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 2009 Jan 20 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 020 Issued at 2200Z on 20 Jan 2009IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity was very low. No flares were observed
during the past 24 hours. The disk remains spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet during the forecast period (January 21-23).
III. Event Probabilities 21 Jan to 23 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Jan 070 Predicted 21 Jan-23 Jan 070/070/070 90 Day Mean 20 Jan 069
V. Geomagnetic A Indices
Observed Afr/Ap 19 Jan 007/009 Estimated Afr/Ap 20 Jan 005/005 Predicted Afr/Ap 21 Jan-23 Jan 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 Jan to 23 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 01% | 01% | 01% |
| 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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