Viewing archive of Wednesday, 22 April 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Apr 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 113 Issued at 2200Z on 22 Apr 2020IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z 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 (23 Apr, 24 Apr, 25 Apr).
IIA. Geophysical Activity Summary 21-2100Z to 22-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 509 km/s at 22/0043Z. Total IMF reached 5
nT at 22/0216Z. The maximum southward component of Bz reached -4 nT at
22/1156Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 217 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (23 Apr) and quiet levels
on days two and three (24 Apr, 25 Apr).
III. Event Probabilities 23 Apr to 25 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 Apr 071 Predicted 23 Apr-25 Apr 071/071/071 90 Day Mean 22 Apr 071
V. Geomagnetic A Indices
Observed Afr/Ap 21 Apr 008/009 Estimated Afr/Ap 22 Apr 007/008 Predicted Afr/Ap 23 Apr-25 Apr 008/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 23 Apr to 25 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 15% |
| Minor storm | 30% | 20% | 20% |
| Major-severe storm | 20% | 10% | 10% |
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