Viewing archive of Sunday, 25 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 25 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 025 Issued at 2200Z on 25 Jan 2009IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity continues very low. No eruptive activity
occurred as the disk is spotless once again today.
IB. Solar Activity Forecast
Solar activity will be very low.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to remain quiet until late on January 26. A recurrent
high-speed solar wind stream is then expected to usher in unsettled
conditions for approximately 24 hours before quiet conditions
return.
III. Event Probabilities 26 Jan to 28 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Jan 070 Predicted 26 Jan-28 Jan 070/070/070 90 Day Mean 25 Jan 068
V. Geomagnetic A Indices
Observed Afr/Ap 24 Jan 001/001 Estimated Afr/Ap 25 Jan 001/005 Predicted Afr/Ap 26 Jan-28 Jan 005/005-010/010-005/008
VI. Geomagnetic Activity Probabilities 26 Jan to 28 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 20% | 10% |
| Minor storm | 01% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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| Last X-flare | 2024/11/06 | X2.39 |
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| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
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