Viewing archive of Friday, 2 January 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 Jan 02 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 2 Issued at 2200Z on 02 Jan 2015IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z 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
02/1948Z from Region 2256 (S08W48). 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 (03 Jan, 04 Jan,
05 Jan).
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
476 km/s at 02/0923Z. Total IMF reached 10 nT at 02/1510Z. The maximum
southward component of Bz reached -8 nT at 02/1725Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 2019 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to active levels on days one and three (03 Jan, 05
Jan) and quiet to active levels on day two (04 Jan).
III. Event Probabilities 03 Jan to 05 Jan
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Jan 146 Predicted 03 Jan-05 Jan 145/145/150 90 Day Mean 02 Jan 156
V. Geomagnetic A Indices
Observed Afr/Ap 01 Jan 007/004 Estimated Afr/Ap 02 Jan 009/012 Predicted Afr/Ap 03 Jan-05 Jan 012/015-011/015-012/015
VI. Geomagnetic Activity Probabilities 03 Jan to 05 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 40% | 40% | 40% |
All times in UTC
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