Viewing archive of Tuesday, 2 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 02 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 002 Issued at 2200Z on 02 Jan 2001IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z Solar activity was low. The most interesting events of
the last 24 hours were two long-duration C-class x-ray flares -- a
C7 at 02/0811 UTC and a C6 at 02/1807 UTC. Neither flare seemed to
be associated with activity on the visible disk. SOHO images suggest
that the source may be behind the northeast limb although this is a
preliminary analysis and not a certainty. New Regions 9295 (S12E73)
and 9296 (N10E76) were numbered.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. The most likely source of activity on the disk remains
Region 9289 (S07W10). Activity levels may increase if the source of
today's long-duration flares is in fact beyond the northeast limb
and soon to rotate onto the visible disk.
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet, becoming unsettled to active by the end of the
forecast period due to a high-speed coronal hole stream.
III. Event Probabilities 03 Jan to 05 Jan
| Class M | 40% | 40% | 40% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Jan 176 Predicted 03 Jan-05 Jan 170/170/165 90 Day Mean 02 Jan 172
V. Geomagnetic A Indices
Observed Afr/Ap 01 Jan 002/003 Estimated Afr/Ap 02 Jan 002/005 Predicted Afr/Ap 03 Jan-05 Jan 005/012-010/015-010/015
VI. Geomagnetic Activity Probabilities 03 Jan to 05 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 30% | 30% |
| Minor storm | 10% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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