Viewing archive of Sunday, 7 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 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 341 Issued at 2200Z on 07 Dec 2014IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C2 event observed at
07/0138Z from Region 2222 (S19W80). There are currently 4 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 (08 Dec, 09 Dec,
10 Dec).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at unsettled to minor storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 815 km/s at 07/1900Z. Total IMF reached 12 nT at 06/2102Z. The
maximum southward component of Bz reached -6 nT at 07/0949Z. Electrons
greater than 2 MeV at geosynchronous orbit reached a peak level of 2029
pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (08 Dec), quiet to
active levels on day two (09 Dec) and quiet levels on day three (10
Dec).
III. Event Probabilities 08 Dec to 10 Dec
| Class M | 35% | 35% | 35% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Dec 132 Predicted 08 Dec-10 Dec 135/140/145 90 Day Mean 07 Dec 152
V. Geomagnetic A Indices
Observed Afr/Ap 06 Dec 010/013 Estimated Afr/Ap 07 Dec 017/025 Predicted Afr/Ap 08 Dec-10 Dec 012/015-008/010-007/008
VI. Geomagnetic Activity Probabilities 08 Dec to 10 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 25% | 25% |
| Minor storm | 15% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 20% | 20% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 55% | 30% | 30% |
All times in UTC
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