Viewing archive of Saturday, 9 January 2021
Solar activity report
Report of Solar-Geophysical Activity 2021 Jan 09 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 9 Issued at 2200Z on 09 Jan 2021IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z 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 (10 Jan, 11 Jan, 12 Jan).
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 379 km/s at 09/1653Z. Total IMF reached 5 nT at
09/0252Z. The maximum southward component of Bz reached -3 nT at
09/0602Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 179 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (10 Jan, 11 Jan)
and quiet levels on day three (12 Jan).
III. Event Probabilities 10 Jan to 12 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 09 Jan 074 Predicted 10 Jan-12 Jan 075/075/075 90 Day Mean 09 Jan 085
V. Geomagnetic A Indices
Observed Afr/Ap 08 Jan 001/001 Estimated Afr/Ap 09 Jan 004/004 Predicted Afr/Ap 10 Jan-12 Jan 008/008-007/008-006/005
VI. Geomagnetic Activity Probabilities 10 Jan to 12 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 25% | 25% | 15% |
All times in UTC
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