Viewing archive of Friday, 25 June 2021
Solar activity report
Report of Solar-Geophysical Activity 2021 Jun 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 176 Issued at 2200Z on 25 Jun 2021IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C1 event observed at
25/1403Z from Region 2833 (N24W92). 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 (26
Jun, 27 Jun, 28 Jun).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 432 km/s at 25/0821Z. Total IMF reached 10
nT at 24/2301Z. The maximum southward component of Bz reached -10 nT at
24/2310Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 540 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (26 Jun, 27 Jun, 28
Jun).
III. Event Probabilities 26 Jun to 28 Jun
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Jun 083 Predicted 26 Jun-28 Jun 082/082/082 90 Day Mean 25 Jun 076
V. Geomagnetic A Indices
Observed Afr/Ap 24 Jun 006/005 Estimated Afr/Ap 25 Jun 007/007 Predicted Afr/Ap 26 Jun-28 Jun 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 26 Jun to 28 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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