Viewing archive of Thursday, 22 June 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Jun 22 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 173 Issued at 2200Z on 22 Jun 2023IA. Analysis of Solar Active Regions and Activity from 21-2100Z to 22-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M1 event observed at
22/1121Z from Region 3341 (S15E34). There are currently 11 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
days one, two, and three (23 Jun, 24 Jun, 25 Jun).
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 486 km/s at 21/2107Z. Total IMF reached 7
nT at 22/0630Z. The maximum southward component of Bz reached -6 nT at
22/0715Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 2547 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (23 Jun), quiet to unsettled
levels on day two (24 Jun) and quiet levels on day three (25 Jun).
III. Event Probabilities 23 Jun to 25 Jun
| Class M | 40% | 40% | 40% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 22 Jun 173 Predicted 23 Jun-25 Jun 180/180/185 90 Day Mean 22 Jun 154
V. Geomagnetic A Indices
Observed Afr/Ap 21 Jun 009/008 Estimated Afr/Ap 22 Jun 008/008 Predicted Afr/Ap 23 Jun-25 Jun 010/014-008/010-007/008
VI. Geomagnetic Activity Probabilities 23 Jun to 25 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 15% |
| Minor storm | 15% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 30% | 25% | 20% |
| Major-severe storm | 50% | 30% | 20% |
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