Viewing archive of Saturday, 30 January 2021
Solar activity report
Report of Solar-Geophysical Activity 2021 Jan 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 30 Issued at 2200Z on 30 Jan 2021IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z 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 (31 Jan, 01 Feb, 02 Feb).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 373 km/s at 29/2203Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 3135 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (31 Jan), quiet to minor
storm levels on day two (01 Feb) and quiet to active levels on day three
(02 Feb).
III. Event Probabilities 31 Jan to 02 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jan 074 Predicted 31 Jan-02 Feb 074/074/072 90 Day Mean 30 Jan 084
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jan 002/002 Estimated Afr/Ap 30 Jan 002/003 Predicted Afr/Ap 31 Jan-02 Feb 007/008-013/018-011/012
VI. Geomagnetic Activity Probabilities 31 Jan to 02 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 40% | 30% |
| Minor storm | 05% | 25% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 15% |
| Minor storm | 20% | 20% | 30% |
| Major-severe storm | 20% | 60% | 40% |
All times in UTC
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