Viewing archive of Sunday, 18 October 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Oct 18 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 292 Issued at 2200Z on 18 Oct 2020IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 2 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a slight chance for a C-class flare on days one, two, and three (19
Oct, 20 Oct, 21 Oct).
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 355 km/s at 18/0837Z. Total IMF reached 8 nT at
18/0547Z. The maximum southward component of Bz reached -3 nT at
17/2126Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 211 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (19 Oct), quiet to unsettled levels on
day two (20 Oct) and quiet to active levels on day three (21 Oct).
III. Event Probabilities 19 Oct to 21 Oct
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 18 Oct 076 Predicted 19 Oct-21 Oct 075/074/074 90 Day Mean 18 Oct 072
V. Geomagnetic A Indices
Observed Afr/Ap 17 Oct 005/004 Estimated Afr/Ap 18 Oct 003/003 Predicted Afr/Ap 19 Oct-21 Oct 006/005-007/008-011/015
VI. Geomagnetic Activity Probabilities 19 Oct to 21 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 10% | 30% |
| Minor storm | 01% | 01% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 20% | 30% |
| Major-severe storm | 10% | 20% | 45% |
All times in UTC
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