Viewing archive of Saturday, 27 January 2001
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 2001 Jan 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 027 Issued at 2200Z on 27 Jan 2001IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z Solar activity decreased to low levels. Isolated,
low-level C-class subflares occurred. Minor spot growth was reported
in Regions 9321 (S05W10) and 9325 (N11E37). The remaining regions
were simply-structured and stable including newly numbered Region
9327 (N17E47).
IB. Solar Activity Forecast
Solar activity is expected to remain
at low levels.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
Geomagnetic field activity was at mostly quiet levels.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to remain at mostly quiet levels.
III. Event Probabilities 28 Jan to 30 Jan
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Jan 167 Predicted 28 Jan-30 Jan 165/165/160 90 Day Mean 27 Jan 174
V. Geomagnetic A Indices
Observed Afr/Ap 26 Jan 009/010 Estimated Afr/Ap 27 Jan 005/004 Predicted Afr/Ap 28 Jan-30 Jan 007/004-007/004-007/005
VI. Geomagnetic Activity Probabilities 28 Jan to 30 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
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