Viewing archive of Wednesday, 24 October 2012
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 2012 Oct 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 298 Issued at 2200Z on 24 Oct 2012IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z Solar activity has been low. Region 1598 (S12E29) has
produced numerous C-class events throughout the period, and remains
the most magnetically complex region on the disk. Although slight
decay was noted in Region 1598s trailer spots, it still maintains a
Delta magnetic configuration. Region 1596 (N08W08) is moderately
sized with some magnetic complexity, but did not produce any flares
during the period. The other regions either remained stable or were
decaying.
IB. Solar Activity Forecast
Solar activity is expected to be
moderate to high with occasional M-class events, and a slight chance
for an isolated X-class event for the next three days (25 - 27 Oct)
with Region 1598 the most likely source.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic field was quiet for the past 24 hours. Solar wind
speed, as measured at the ACE spacecraft, decreased slowly
throughout the period from around 370 km/s to around 340 km/s. The
Bz component of the interplanetary magnetic field ranged from +/- 2
nT. The greater than 2 MeV electron flux at geosynchronous orbit
reached high levels during the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next three days (25 - 27 Oct).
III. Event Probabilities 25 Oct to 27 Oct
| Class M | 60% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Oct 136 Predicted 25 Oct-27 Oct 135/135/130 90 Day Mean 24 Oct 122
V. Geomagnetic A Indices
Observed Afr/Ap 23 Oct 009/006 Estimated Afr/Ap 24 Oct 005/005 Predicted Afr/Ap 25 Oct-27 Oct 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 25 Oct to 27 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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