Viewing archive of Wednesday, 7 October 2015
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 2015 Oct 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 280 Issued at 2200Z on 07 Oct 2015IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 2 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a slight chance for a C-class flare on days one, two, and three (08
Oct, 09 Oct, 10 Oct).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at active to severe storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 845 km/s at 07/2033Z. Total IMF reached 22 nT at 07/1425Z. The
maximum southward component of Bz reached -18 nT at 07/1339Z. Electrons
greater than 2 MeV at geosynchronous orbit reached a peak level of 639
pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at active to severe storm levels on day one (08 Oct), quiet to
minor storm levels on day two (09 Oct) and quiet to active levels on day
three (10 Oct).
III. Event Probabilities 08 Oct to 10 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Oct 081 Predicted 08 Oct-10 Oct 080/085/085 90 Day Mean 07 Oct 103
V. Geomagnetic A Indices
Observed Afr/Ap 06 Oct 011/015 Estimated Afr/Ap 07 Oct 041/079 Predicted Afr/Ap 08 Oct-10 Oct 030/048-014/018-011/012
VI. Geomagnetic Activity Probabilities 08 Oct to 10 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 40% | 25% |
| Minor storm | 50% | 25% | 10% |
| Major-severe storm | 25% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 10% | 20% |
| Minor storm | 15% | 30% | 30% |
| Major-severe storm | 80% | 60% | 35% |
All times in UTC
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