Viewing archive of Saturday, 3 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 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 276 Issued at 2200Z on 03 Oct 2015IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
03/0633Z from Region 2422 (S20W89). There are currently 3 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares and a slight chance for an M-class
flare on day one (04 Oct) and expected to be very low with a chance for
a C-class flares on days two and three (05 Oct, 06 Oct).
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
461 km/s at 03/0500Z. Total IMF reached 11 nT at 03/0631Z. The maximum
southward component of Bz reached -7 nT at 03/1314Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to minor storm levels on day one (04 Oct), unsettled
to active levels on day two (05 Oct) and quiet to unsettled levels on
day three (06 Oct). Protons greater than 10 Mev have a slight chance of
crossing threshold on day one (04 Oct).
III. Event Probabilities 04 Oct to 06 Oct
| Class M | 10% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 10% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 03 Oct 097 Predicted 04 Oct-06 Oct 090/095/095 90 Day Mean 03 Oct 105
V. Geomagnetic A Indices
Observed Afr/Ap 02 Oct 009/012 Estimated Afr/Ap 03 Oct 012/016 Predicted Afr/Ap 04 Oct-06 Oct 025/033-015/018-010/012
VI. Geomagnetic Activity Probabilities 04 Oct to 06 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 25% | 20% |
| Minor storm | 25% | 10% | 05% |
| Major-severe storm | 10% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 15% | 20% |
| Minor storm | 25% | 30% | 30% |
| Major-severe storm | 65% | 35% | 25% |
All times in UTC
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