Viewing archive of Tuesday, 11 January 2005
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 2005 Jan 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 011 Issued at 2200Z on 11 Jan 2005IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity has been low. Region 718 (S06E32)
produced a very impulsive C1.4 on 11 Jan at 1616Z. Regions 718 and
719 (S07E35) have been combined into Region 718.
IB. Solar Activity Forecast
Solar activity is expected to be low.
Region 718 continues to show minor plage fluctuations with a fair
chance for isolated C-class activity.
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic field has been at quiet to active levels.
Interplanetary magnetic field (IMF) Bz has been fluctuating +5 to -5
nT over the last 36 hours, generating periods of active levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to active levels. IMF fluctuations
associated with a large coronal hole have a potential to cause
periods of active levels through 13 Jan.
III. Event Probabilities 12 Jan to 14 Jan
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Jan 094 Predicted 12 Jan-14 Jan 090/090/090 90 Day Mean 11 Jan 105
V. Geomagnetic A Indices
Observed Afr/Ap 10 Jan 004/006 Estimated Afr/Ap 11 Jan 010/010 Predicted Afr/Ap 12 Jan-14 Jan 010/010-010/010-010/010
VI. Geomagnetic Activity Probabilities 12 Jan to 14 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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