Viewing archive of Friday, 5 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 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 279 Issued at 2200Z on 05 Oct 2012IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z Solar activity was very low. A long duration (7.5
hours) B7 x-ray event was observed at 05/0730Z. Post eruption loop
structures were observed in GOES SXI imagery beginning at
approximately 05/0328Z in the vicinity of Region 1584 (S22W40)
shortly after the beginning of the B7 flare at 05/0317Z. A partial
halo CME was first observed in SOHO/LASCO C3 imagery at 05/0730Z and
STEREO A COR2 imagery at 05/0409Z with an estimated plane-of-sky
speed at 590 km/s. WSA-ENLIL model indicates this Earth-directed
CME to become geoeffective late on 08 October.
IB. Solar Activity Forecast
Solar activity is expected to continue
at very low levels with the chance for a C-class flare during the
forecast period (06-08 October).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mostly quiet on days 1-2 (06-07 October). Late on
day 3 (08 October), todays CME is expected to become geoeffective
causing unsettled to active conditions with a chance for minor storm
periods.
III. Event Probabilities 06 Oct to 08 Oct
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 05 Oct 106 Predicted 06 Oct-08 Oct 105/105/100 90 Day Mean 05 Oct 122
V. Geomagnetic A Indices
Observed Afr/Ap 04 Oct 003/003 Estimated Afr/Ap 05 Oct 003/004 Predicted Afr/Ap 06 Oct-08 Oct 006/005-006/005-010/015
VI. Geomagnetic Activity Probabilities 06 Oct to 08 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 30% |
| Minor storm | 01% | 01% | 15% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 20% |
| Major-severe storm | 05% | 05% | 20% |
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