Viewing archive of Tuesday, 30 August 2011
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 2011 Aug 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 242 Issued at 2200Z on 30 Aug 2011IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was low. Region 1274 (N19W59) produced
occasional B- and C-class flares as it developed from a plage region
to a six-spot Bxo group. The largest of these was a C1/Sf at
30/0312Z. Three new regions were numbered: 1282 (N24E01), 1283
(N12E71) and 1284 (S19W57); all of which were small and
simply-structured. There were no Earth-directed CMEs observed during
the period.
IB. Solar Activity Forecast
Solar activity is expected to be low
through the period (31 August - 02 September).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
Geomagnetic field activity was at mostly quiet levels with unsettled
periods observed at high latitudes.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be at mostly quiet levels through the period (31 August
- 02 September).
III. Event Probabilities 31 Aug to 02 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Aug 101 Predicted 31 Aug-02 Sep 100/100/095 90 Day Mean 30 Aug 097
V. Geomagnetic A Indices
Observed Afr/Ap 29 Aug 007/009 Estimated Afr/Ap 30 Aug 005/005 Predicted Afr/Ap 31 Aug-02 Sep 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 31 Aug to 02 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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