Viewing archive of Friday, 23 June 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Jun 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 174 Issued at 2200Z on 23 Jun 2023IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M4 event observed at
22/2344Z from Region 3340 (N22E07). There are currently 13 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 472 km/s at 23/1805Z. Total IMF reached 8
nT at 23/2040Z. The maximum southward component of Bz reached -7 nT at
23/1552Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 1448 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (24 Jun, 25 Jun)
and quiet levels on day three (26 Jun).
III. Event Probabilities 24 Jun to 26 Jun
| Class M | 40% | 40% | 40% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Jun 170 Predicted 24 Jun-26 Jun 170/165/165 90 Day Mean 23 Jun 154
V. Geomagnetic A Indices
Observed Afr/Ap 22 Jun 008/010 Estimated Afr/Ap 23 Jun 009/010 Predicted Afr/Ap 24 Jun-26 Jun 008/010-008/008-005/005
VI. Geomagnetic Activity Probabilities 24 Jun to 26 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 20% | 20% |
| Major-severe storm | 30% | 20% | 15% |
All times in UTC
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