Viewing archive of Monday, 6 August 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 Aug 06 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 219 Issued at 2200Z on 06 Aug 2012IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z Solar activity was low to moderate. Newly numbered
Region 1542 (S13E75) produced an M1 x-ray flare at 06/0438Z, with
associated Type II (estimated velocity of 552 km/s) and Type IV
radio sweeps, as well as several C-class flares. Two CMEs were
observed on LASCO C2 imagery with the majority of the ejecta off the
northeast limb. These CMEs do not appear to be Earth-directed.
IB. Solar Activity Forecast
Solar activity is forecast to be at
low levels with a slight chance for an isolated M-class flare.
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
Geomagnetic activity was at quiet to unsettled levels with active
periods at high latitudes due to an extended period of southward Bz.
ACE solar wind data indicated fairly consistent solar wind
velocities around 350 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at mostly quiet levels on day one (07 Aug), then
increase to quiet to unsettled levels on day two (08 Aug) due to a
glancing blow from the 04 Aug CME. Day three (09 Aug) should see a
return to mostly quiet levels with isolated unsettled periods as the
effects of the CME begin to wane.
III. Event Probabilities 07 Aug to 09 Aug
| Class M | 20% | 20% | 20% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Aug 134 Predicted 07 Aug-09 Aug 135/130/130 90 Day Mean 06 Aug 128
V. Geomagnetic A Indices
Observed Afr/Ap 05 Aug 006/006 Estimated Afr/Ap 06 Aug 009/010 Predicted Afr/Ap 07 Aug-09 Aug 006/005-007/010-007/008
VI. Geomagnetic Activity Probabilities 07 Aug to 09 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 15% | 15% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 25% | 20% |
| Major-severe storm | 05% | 25% | 20% |
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