Viewing archive of Tuesday, 25 August 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Aug 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 238 Issued at 2200Z on 25 Aug 2020IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z 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 (26 Aug, 27 Aug, 28 Aug).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 376 km/s at 24/2221Z. Total IMF reached 6 nT at
25/0345Z. The maximum southward component of Bz reached -3 nT at
25/0806Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 209 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (26 Aug) and quiet levels
on days two and three (27 Aug, 28 Aug).
III. Event Probabilities 26 Aug to 28 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Aug 071 Predicted 26 Aug-28 Aug 070/070/070 90 Day Mean 25 Aug 070
V. Geomagnetic A Indices
Observed Afr/Ap 24 Aug 003/003 Estimated Afr/Ap 25 Aug 004/005 Predicted Afr/Ap 26 Aug-28 Aug 008/008-006/005-005/005
VI. Geomagnetic Activity Probabilities 26 Aug to 28 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 20% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 30% | 10% | 10% |
All times in UTC
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