Viewing archive of Monday, 1 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 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 001 Issued at 2200Z on 01 Jan 2001IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z Solar activity was low. A few small C-class subflares
occurred in Regions 9283 (S10W57) and 9289 (S06E03). Region 9283 is
a small decaying D-type sunspot group. Region 9289 remains a large
E-type sunspot group with some magnetic complexity. New Regions 9293
(N13E41) and 9294 (N22E69) were numbered. Neither sunspot group
appears particularly significant.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. Region 9289 is the most likely source of flare
activity.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to remain quiet for the first day of the forecast period.
Activity may increase to unsettled to active levels by the end of
the forecast period due to a well-positioned coronal hole.
III. Event Probabilities 02 Jan to 04 Jan
| Class M | 40% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Jan 171 Predicted 02 Jan-04 Jan 170/170/165 90 Day Mean 01 Jan 173
V. Geomagnetic A Indices
Observed Afr/Ap 31 Dec 001/002 Estimated Afr/Ap 01 Jan 004/005 Predicted Afr/Ap 02 Jan-04 Jan 005/010-010/012-010/015
VI. Geomagnetic Activity Probabilities 02 Jan to 04 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 30% | 30% |
| Minor storm | 10% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
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