Viewing archive of Monday, 12 January 2004
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 2004 Jan 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 012 Issued at 2200Z on 12 Jan 2004IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity remained at low levels today. Regions
536 (S12W68) and 537 (N05W03) both continue to produce multiple B
and C-class flares. Region 536 continues to show a slow, steady
decay. Region 537 has shown a slight growth in penumbral coverage
and retains a complex beta-gamma/delta magnetic structure. A newly
numbered region; Region 540 (S11E76) appears to have had some minor
flare activity in the vicinity of what so far is a cluster of alpha
spots. These spots became visible earlier in the period. This
group's proximity to the solar east limb hinders and further
analysis at the time of this writing.
IB. Solar Activity Forecast
Solar activity is expected to be at
low to moderate levels. Region 537 is remains capable of producing
M-class flare activity.
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic field was at quiet to unsettled levels. The coronal
hole has moved beyond a geoeffective location on the solar disk.
The greater than 2 MeV electron flux reached high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels throughout the forecast
period.
III. Event Probabilities 13 Jan to 15 Jan
| Class M | 50% | 50% | 35% |
| Class X | 15% | 15% | 10% |
| Proton | 10% | 10% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Jan 118 Predicted 13 Jan-15 Jan 125/130/135 90 Day Mean 12 Jan 137
V. Geomagnetic A Indices
Observed Afr/Ap 11 Jan 012/017 Estimated Afr/Ap 12 Jan 006/008 Predicted Afr/Ap 13 Jan-15 Jan 006/008-006/008-006/008
VI. Geomagnetic Activity Probabilities 13 Jan to 15 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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