Viewing archive of Monday, 12 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 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 285 Issued at 2200Z on 12 Oct 2015IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z 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
11/2229Z. There are currently 4 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 on days one, two, and three (13 Oct,
14 Oct, 15 Oct).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
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 580 km/s at 12/2029Z. Total IMF reached 8 nT at 12/1935Z. The
maximum southward component of Bz reached -7 nT at 12/1632Z. Electrons
greater than 2 MeV at geosynchronous orbit reached a peak level of 34918
pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (13 Oct), unsettled to active
levels on day two (14 Oct) and unsettled to minor storm levels on day
three (15 Oct).
III. Event Probabilities 13 Oct to 15 Oct
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Oct 089 Predicted 13 Oct-15 Oct 090/095/095 90 Day Mean 12 Oct 101
V. Geomagnetic A Indices
Observed Afr/Ap 11 Oct 008/010 Estimated Afr/Ap 12 Oct 017/022 Predicted Afr/Ap 13 Oct-15 Oct 013/015-015/018-015/020
VI. Geomagnetic Activity Probabilities 13 Oct to 15 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 35% | 40% |
| Minor storm | 10% | 20% | 25% |
| Major-severe storm | 01% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 35% | 30% | 25% |
| Major-severe storm | 40% | 55% | 60% |
All times in UTC
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