Viewing archive of Thursday, 15 June 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Jun 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 166 Issued at 2200Z on 15 Jun 2023IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C9 event observed at
15/1255Z from Region 3336 (S21E54). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare on days one, two, and three (16
Jun, 17 Jun, 18 Jun).
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic
field has been at quiet to minor storm levels for the past 24 hours.
Solar wind speed reached a peak of 506 km/s at 14/2214Z. Total IMF
reached 19 nT at 15/2046Z. The maximum southward component of Bz reached
-11 nT at 15/1634Z. Electrons greater than 2 MeV at geosynchronous
orbit reached a peak level of 150 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to minor storm levels on day one (16 Jun) and quiet to
unsettled levels on days two and three (17 Jun, 18 Jun).
III. Event Probabilities 16 Jun to 18 Jun
| Class M | 20% | 20% | 20% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Jun 153 Predicted 16 Jun-18 Jun 155/160/160 90 Day Mean 15 Jun 153
V. Geomagnetic A Indices
Observed Afr/Ap 14 Jun 005/004 Estimated Afr/Ap 15 Jun 015/022 Predicted Afr/Ap 16 Jun-18 Jun 017/018-010/012-008/008
VI. Geomagnetic Activity Probabilities 16 Jun to 18 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 25% | 15% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 20% | 15% |
| Major-severe storm | 20% | 25% | 15% |
All times in UTC
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