Viewing archive of Saturday, 13 October 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 Oct 13 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 286 Issued at 2200Z on 13 Oct 2001IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity was low. The largest flare was a C5/Sf
at 13/0523 UTC in Region 9658 (S15E18). Other activity was
inconsequential. Region 9661 (N15E42) is the largest, most complex
active region on the disk as a moderately-large, beta-delta sunspot
group. However the group has yet to produce significant activity.
New Region 9665 (S26W57) was numbered.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. C-class flares should continue and M-class flares are
possible. Region 9661 appears to have potential for an isolated
major flare.
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic field was quiet to active over the past 24 hours,
although quiet to unsettled conditions have prevailed for most of
the UTC day of 13 October.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled.
III. Event Probabilities 14 Oct to 16 Oct
| Class M | 40% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 13 Oct 180 Predicted 14 Oct-16 Oct 185/190/195 90 Day Mean 13 Oct 184
V. Geomagnetic A Indices
Observed Afr/Ap 12 Oct 018/027 Estimated Afr/Ap 13 Oct 010/010 Predicted Afr/Ap 14 Oct-16 Oct 008/010-008/008-008/008
VI. Geomagnetic Activity Probabilities 14 Oct to 16 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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