Viewing archive of Saturday, 19 June 2021
Solar activity report
Report of Solar-Geophysical Activity 2021 Jun 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 170 Issued at 2200Z on 19 Jun 2021IA. 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 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 (20
Jun, 21 Jun, 22 Jun).
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 548 km/s at 19/0829Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 4223 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (20 Jun, 21 Jun, 22
Jun).
III. Event Probabilities 20 Jun to 22 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Jun 077 Predicted 20 Jun-22 Jun 078/080/080 90 Day Mean 19 Jun 076
V. Geomagnetic A Indices
Observed Afr/Ap 18 Jun 008/008 Estimated Afr/Ap 19 Jun 006/005 Predicted Afr/Ap 20 Jun-22 Jun 006/005-006/005-005/005
VI. Geomagnetic Activity Probabilities 20 Jun to 22 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 10% | 10% | 10% |
All times in UTC
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