Viewing archive of Wednesday, 9 October 2013
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 2013 Oct 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 282 Issued at 2200Z on 09 Oct 2013IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
09/0148Z from Region 1865 (S21E58). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (10 Oct, 11 Oct,
12 Oct).
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 683 km/s at 09/0311Z. Total IMF reached 36 nT at 08/2112Z. The
maximum southward component of Bz reached -16 nT at 08/2305Z. Electrons
greater than 2 MeV at geosynchronous orbit reached a peak level of 115
pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (10 Oct) and quiet to
unsettled levels on days two and three (11 Oct, 12 Oct).
III. Event Probabilities 10 Oct to 12 Oct
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Oct 113 Predicted 10 Oct-12 Oct 110/110/110 90 Day Mean 09 Oct 109
V. Geomagnetic A Indices
Observed Afr/Ap 08 Oct 012/014 Estimated Afr/Ap 09 Oct 017/022 Predicted Afr/Ap 10 Oct-12 Oct 012/012-008/010-007/010
VI. Geomagnetic Activity Probabilities 10 Oct to 12 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 20% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 15% | 20% |
| Major-severe storm | 40% | 05% | 10% |
All times in UTC
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