Viewing archive of Thursday, 21 May 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 May 21 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 142 Issued at 2200Z on 21 May 2020IA. Analysis of Solar Active Regions and Activity from 20-2100Z to 21-2100Z 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 (22 May, 23 May, 24 May).
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 367 km/s at 20/2101Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 132 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (22 May, 23 May, 24
May).
III. Event Probabilities 22 May to 24 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 21 May 070 Predicted 22 May-24 May 070/070/070 90 Day Mean 21 May 070
V. Geomagnetic A Indices
Observed Afr/Ap 20 May 003/003 Estimated Afr/Ap 21 May 005/005 Predicted Afr/Ap 22 May-24 May 005/005-005/005-006/005
VI. Geomagnetic Activity Probabilities 22 May to 24 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| 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 | 10% | 05% | 05% |
All times in UTC
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