Viewing archive of Friday, 11 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 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 284 Issued at 2200Z on 11 Oct 2013IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
11/0725Z. There are currently 7 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
days one, two, and three (12 Oct, 13 Oct, 14 Oct).
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 460 km/s at
11/0313Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 505 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (12 Oct, 13 Oct) and quiet to
unsettled levels on day three (14 Oct).
III. Event Probabilities 12 Oct to 14 Oct
| Class M | 40% | 40% | 40% |
| Class X | 15% | 15% | 15% |
| Proton | 01% | 01% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Oct 129 Predicted 12 Oct-14 Oct 135/135/130 90 Day Mean 11 Oct 110
V. Geomagnetic A Indices
Observed Afr/Ap 10 Oct 007/009 Estimated Afr/Ap 11 Oct 005/005 Predicted Afr/Ap 12 Oct-14 Oct 006/005-006/005-007/008
VI. Geomagnetic Activity Probabilities 12 Oct to 14 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 15% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 20% |
| Major-severe storm | 05% | 10% | 15% |
All times in UTC
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