Viewing archive of Saturday, 26 December 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Dec 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 361 Issued at 2200Z on 26 Dec 2020IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 2 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a slight chance for a C-class flare on days one, two, and three (27
Dec, 28 Dec, 29 Dec).
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 460 km/s at 25/2132Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 1006 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (27 Dec, 28 Dec) and quiet to
unsettled levels on day three (29 Dec).
III. Event Probabilities 27 Dec to 29 Dec
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Dec 088 Predicted 27 Dec-29 Dec 088/088/088 90 Day Mean 26 Dec 083
V. Geomagnetic A Indices
Observed Afr/Ap 25 Dec 004/004 Estimated Afr/Ap 26 Dec 004/004 Predicted Afr/Ap 27 Dec-29 Dec 005/005-006/005-008/008
VI. Geomagnetic Activity Probabilities 27 Dec to 29 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 20% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 25% |
| Major-severe storm | 10% | 10% | 25% |
All times in UTC
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