Viewing archive of Wednesday, 30 September 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Sep 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 274 Issued at 2200Z on 30 Sep 2020IA. 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 (01 Oct, 02 Oct, 03 Oct).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 642 km/s at 30/1435Z. Total IMF reached 5
nT at 30/0242Z. The maximum southward component of Bz reached -4 nT at
29/2346Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 29293 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (01 Oct), quiet to unsettled
levels on day two (02 Oct) and quiet levels on day three (03 Oct).
III. Event Probabilities 01 Oct to 03 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Sep 073 Predicted 01 Oct-03 Oct 074/074/074 90 Day Mean 30 Sep 071
V. Geomagnetic A Indices
Observed Afr/Ap 29 Sep 014/014 Estimated Afr/Ap 30 Sep 017/020 Predicted Afr/Ap 01 Oct-03 Oct 013/015-011/010-006/005
VI. Geomagnetic Activity Probabilities 01 Oct to 03 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 10% | 05% |
| Minor storm | 15% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 15% |
| Minor storm | 30% | 20% | 15% |
| Major-severe storm | 45% | 10% | 10% |
All times in UTC
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