Viewing archive of Thursday, 1 October 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Oct 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 275 Issued at 2200Z on 01 Oct 2020IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 01-2100Z 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 (02 Oct, 03 Oct, 04 Oct).
IIA. Geophysical Activity Summary 30-2100Z to 01-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 578 km/s at 30/2100Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 32431 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (02 Oct), quiet to unsettled
levels on day two (03 Oct) and quiet levels on day three (04 Oct).
III. Event Probabilities 02 Oct to 04 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Oct 073 Predicted 02 Oct-04 Oct 073/073/073 90 Day Mean 01 Oct 071
V. Geomagnetic A Indices
Observed Afr/Ap 30 Sep 012/014 Estimated Afr/Ap 01 Oct 009/013 Predicted Afr/Ap 02 Oct-04 Oct 011/012-008/008-006/005
VI. Geomagnetic Activity Probabilities 02 Oct to 04 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 15% | 05% |
| Minor storm | 10% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 25% | 15% |
| Major-severe storm | 40% | 25% | 10% |
All times in UTC
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