Viewing archive of Monday, 11 January 2021
Solar activity report
Report of Solar-Geophysical Activity 2021 Jan 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 11 Issued at 2200Z on 11 Jan 2021IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 0 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
on days one, two, and three (12 Jan, 13 Jan, 14 Jan).
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 466 km/s at 11/2100Z. Total IMF reached 20
nT at 11/1347Z. The maximum southward component of Bz reached -18 nT at
11/1329Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 166 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (12 Jan) and quiet levels
on days two and three (13 Jan, 14 Jan).
III. Event Probabilities 12 Jan to 14 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Jan 073 Predicted 12 Jan-14 Jan 073/073/073 90 Day Mean 11 Jan 085
V. Geomagnetic A Indices
Observed Afr/Ap 10 Jan 003/002 Estimated Afr/Ap 11 Jan 009/012 Predicted Afr/Ap 12 Jan-14 Jan 008/008-006/005-005/005
VI. Geomagnetic Activity Probabilities 12 Jan to 14 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 25% | 15% | 15% |
All times in UTC
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