Viewing archive of Friday, 25 January 2002
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 2002 Jan 25 2200 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 2002IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity was low. Region 9794 (N13W03) produced
the largest flare of the past day, a C6/Sn at 25/0225 UTC. Region
9787 (S09W21) remains the largest sunspot group on the visible disk
but is not particularly complex and has not produced major activity.
New Regions 9800 (N07E63) and 9801 (S03E77) rotated into view.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. C-level activity is expected to continue and there is a
small chance of an isolated M-class flare.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled.
III. Event Probabilities 26 Jan to 28 Jan
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Jan 235 Predicted 26 Jan-28 Jan 240/245/250 90 Day Mean 25 Jan 223
V. Geomagnetic A Indices
Observed Afr/Ap 24 Jan 003/004 Estimated Afr/Ap 25 Jan 006/006 Predicted Afr/Ap 26 Jan-28 Jan 008/008-008/010-008/010
VI. Geomagnetic Activity Probabilities 26 Jan to 28 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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