Viewing archive of Wednesday, 16 January 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 Jan 16 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 16 Issued at 2200Z on 16 Jan 2013IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a long-duration C2 event
observed at 16/1923Z from a filament eruption near old Region 1650
(S31W79). There are currently 5 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for moderate levels on days one, two, and three (17 Jan, 18
Jan, 19 Jan).
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
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
467 km/s at 15/2142Z. Total IMF reached 6.4 nT at 16/2053Z. The maximum
southward component of Bz reached -4.0 nT at 16/1131Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 934 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at unsettled to active levels for day 1 (17 Jan) and quiet to
unsettled levels for days 2 - 3 (Jan 18, Jan 19).
III. Event Probabilities 17 Jan to 19 Jan
| Class M | 40% | 40% | 40% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 16 Jan 137 Predicted 17 Jan-19 Jan 135/135/130 90 Day Mean 16 Jan 123
V. Geomagnetic A Indices
Observed Afr/Ap 15 Jan 004/004 Estimated Afr/Ap 16 Jan 004/005 Predicted Afr/Ap 17 Jan-19 Jan 010/012-007/008-008/008
VI. Geomagnetic Activity Probabilities 17 Jan to 19 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 25% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 30% | 20% |
| Major-severe storm | 45% | 30% | 10% |
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