Viewing archive of Sunday, 10 August 2014
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 2014 Aug 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 222 Issued at 2200Z on 10 Aug 2014IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z Solar activity was at low levels. The largest event of the
period was a C1/Sf flare at 10/2134 UTC from Region 2137 (S19W23,
Cao/beta). There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
slight chance for an M-class flare on days one and two (11 Aug, 12 Aug)
and expected to be very low with a chance for a C-class flares on day
three (13 Aug).
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
428 km/s at 10/2026Z. Total IMF reached 11 nT at 10/2001Z. The maximum
southward component of Bz reached -5 nT at 10/0829Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 305 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and three (11 Aug, 13
Aug) and quiet levels on day two (12 Aug).
III. Event Probabilities 11 Aug to 13 Aug
| Class M | 10% | 10% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Aug 108 Predicted 11 Aug-13 Aug 105/105/100 90 Day Mean 10 Aug 129
V. Geomagnetic A Indices
Observed Afr/Ap 09 Aug 004/003 Estimated Afr/Ap 10 Aug 008/010 Predicted Afr/Ap 11 Aug-13 Aug 008/008-006/005-007/008
VI. Geomagnetic Activity Probabilities 11 Aug to 13 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 15% |
| Minor storm | 05% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 15% | 25% |
| Major-severe storm | 25% | 10% | 25% |
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