Viewing archive of Wednesday, 20 January 2016
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 2016 Jan 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 20 Issued at 2200Z on 20 Jan 2016IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z 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
20/0734Z from Region 2484 (N08W83). There are currently 4 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (21 Jan,
22 Jan, 23 Jan).
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed, as measured by the ACE spacecraft, reached a peak
speed of 424 km/s at 20/0326Z. Total IMF reached 17 nT at 20/0351Z. The
maximum southward component of Bz reached -14 nT at 20/1527Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and three (21 Jan, 23
Jan) and quiet to active levels on day two (22 Jan).
III. Event Probabilities 21 Jan to 23 Jan
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Jan 100 Predicted 21 Jan-23 Jan 095/100/100 90 Day Mean 20 Jan 109
V. Geomagnetic A Indices
Observed Afr/Ap 19 Jan 007/007 Estimated Afr/Ap 20 Jan 019/026 Predicted Afr/Ap 21 Jan-23 Jan 007/010-010/012-007/008
VI. Geomagnetic Activity Probabilities 21 Jan to 23 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 20% |
| Minor storm | 25% | 35% | 25% |
| Major-severe storm | 25% | 30% | 20% |
All times in UTC
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