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Solar activity report
Report of Solar-Geophysical Activity 2022 Oct 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 300 Issued at 2200Z on 27 Oct 2022IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z 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
27/0126Z from Region 3133 (N26E46). There are currently 5 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (28 Oct,
29 Oct, 30 Oct).
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 473 km/s at 27/2017Z. Total IMF reached 10
nT at 27/1725Z. The maximum southward component of Bz reached -7 nT at
27/1839Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 128 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (28 Oct), quiet to minor
storm levels on day two (29 Oct) and unsettled to active levels on day
three (30 Oct).
III. Event Probabilities 28 Oct to 30 Oct
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Oct 130 Predicted 28 Oct-30 Oct 125/125/125 90 Day Mean 27 Oct 128
V. Geomagnetic A Indices
Observed Afr/Ap 26 Oct 083/004 Estimated Afr/Ap 27 Oct 010/010 Predicted Afr/Ap 28 Oct-30 Oct 008/008-014/018-019/022
VI. Geomagnetic Activity Probabilities 28 Oct to 30 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 40% | 35% |
| Minor storm | 10% | 25% | 20% |
| Major-severe storm | 01% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 35% | 60% | 55% |
All times in UTC
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