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Solar activity report
Report of Solar-Geophysical Activity 2022 Jun 21 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 172 Issued at 2200Z on 21 Jun 2022IA. Analysis of Solar Active Regions and Activity from 20-2100Z to 21-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C2 event observed at
21/0252Z. There are currently 6 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
day one (22 Jun) and expected to be low with a chance for M-class flares
on days two and three (23 Jun, 24 Jun).
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 689 km/s at 21/0725Z. Total IMF reached 10
nT at 21/1801Z. The maximum southward component of Bz reached -6 nT at
21/0856Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 2257 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (22 Jun), quiet to active levels on day
two (23 Jun) and unsettled to active levels on day three (24 Jun).
Protons greater than 10 Mev have a slight chance of crossing threshold
on day one (22 Jun).
III. Event Probabilities 22 Jun to 24 Jun
| Class M | 30% | 25% | 25% |
| Class X | 10% | 05% | 05% |
| Proton | 10% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 21 Jun 139 Predicted 22 Jun-24 Jun 130/125/120 90 Day Mean 21 Jun 130
V. Geomagnetic A Indices
Observed Afr/Ap 20 Jun 010/010 Estimated Afr/Ap 21 Jun 007/007 Predicted Afr/Ap 22 Jun-24 Jun 006/005-008/012-013/018
VI. Geomagnetic Activity Probabilities 22 Jun to 24 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 40% | 40% |
| Minor storm | 01% | 15% | 25% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 20% | 25% | 20% |
| Major-severe storm | 10% | 55% | 60% |
All times in UTC
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| Last M-flare | 2024/12/23 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
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