Viewing archive of Saturday, 19 September 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Sep 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 263 Issued at 2200Z on 19 Sep 2020IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z 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 (20 Sep, 21 Sep, 22 Sep).
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 330 km/s at 19/0151Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 161 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (20 Sep, 21 Sep, 22
Sep).
III. Event Probabilities 20 Sep to 22 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Sep 071 Predicted 20 Sep-22 Sep 070/070/070 90 Day Mean 19 Sep 070
V. Geomagnetic A Indices
Observed Afr/Ap 18 Sep 004/003 Estimated Afr/Ap 19 Sep 003/004 Predicted Afr/Ap 20 Sep-22 Sep 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 20 Sep to 22 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 10% |
All times in UTC
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