Viewing archive of Friday, 17 January 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 Jan 17 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 17 Issued at 2200Z on 17 Jan 2014IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C8 event observed at
17/1608Z. 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 (18 Jan, 19 Jan,
20 Jan).
IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 393 km/s at
16/2101Z. Total IMF reached 5 nT at 17/1549Z. The maximum southward
component of Bz reached -4 nT at 17/1713Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 357 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (18 Jan) and quiet levels on
days two and three (19 Jan, 20 Jan).
III. Event Probabilities 18 Jan to 20 Jan
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 17 Jan 129 Predicted 18 Jan-20 Jan 130/130/135 90 Day Mean 17 Jan 153
V. Geomagnetic A Indices
Observed Afr/Ap 16 Jan 002/002 Estimated Afr/Ap 17 Jan 006/007 Predicted Afr/Ap 18 Jan-20 Jan 009/010-006/005-006/005
VI. Geomagnetic Activity Probabilities 18 Jan to 20 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 05% | 05% |
| Minor storm | 10% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 15% | 15% |
| Major-severe storm | 40% | 05% | 05% |
All times in UTC
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