Viewing archive of Friday, 5 December 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 Dec 05 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 339 Issued at 2200Z on 05 Dec 2014IA. Analysis of Solar Active Regions and Activity from 04-2100Z to 05-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
05/1225Z from Region 2222 (S20W51). There are currently 6 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 (06 Dec, 07 Dec,
08 Dec).
IIA. Geophysical Activity Summary 04-2100Z to 05-2100Z
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
524 km/s at 04/2109Z. Total IMF reached 9 nT at 05/0440Z. The maximum
southward component of Bz reached -7 nT at 04/2151Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 241 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (06 Dec) and quiet to
active levels on days two and three (07 Dec, 08 Dec).
III. Event Probabilities 06 Dec to 08 Dec
| Class M | 40% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 05 Dec 137 Predicted 06 Dec-08 Dec 135/135/140 90 Day Mean 05 Dec 153
V. Geomagnetic A Indices
Observed Afr/Ap 04 Dec 008/008 Estimated Afr/Ap 05 Dec 010/011 Predicted Afr/Ap 06 Dec-08 Dec 007/008-008/010-007/008
VI. Geomagnetic Activity Probabilities 06 Dec to 08 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 25% | 25% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 25% | 30% | 30% |
| Major-severe storm | 20% | 30% | 30% |
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