Viewing archive of Thursday, 10 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 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 283 Issued at 2200Z on 10 Oct 2013IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
10/1101Z from Region 1861 (S10E22). 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 (11 Oct, 12 Oct,
13 Oct).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
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
498 km/s at 09/2102Z. Total IMF reached 11 nT at 09/2158Z. The maximum
southward component of Bz reached -7 nT at 10/0006Z. 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 unsettled levels on days one and two (11 Oct, 12 Oct)
and quiet levels on day three (13 Oct).
III. Event Probabilities 11 Oct to 13 Oct
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Oct 121 Predicted 11 Oct-13 Oct 125/125/125 90 Day Mean 10 Oct 110
V. Geomagnetic A Indices
Observed Afr/Ap 09 Oct 021/026 Estimated Afr/Ap 10 Oct 008/009 Predicted Afr/Ap 11 Oct-13 Oct 008/010-007/010-006/005
VI. Geomagnetic Activity Probabilities 11 Oct to 13 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 20% | 15% |
| Major-severe storm | 05% | 10% | 10% |
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