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Solar activity report

Report of Solar-Geophysical Activity 2023 Oct 01 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 274 Issued at 2200Z on 01 Oct 2023

IA. Analysis of Solar Active Regions and Activity from 30-2100Z to 01-2100Z

Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M2 event observed at 01/0132Z from Region 3452 (N11E47). There are currently 8 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with a chance for M-class flares on days one, two, and three (02 Oct, 03 Oct, 04 Oct).
IIA. Geophysical Activity Summary 30-2100Z to 01-2100Z
The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 452 km/s at 01/2031Z. Total IMF reached 6 nT at 01/0852Z. The maximum southward component of Bz reached -6 nT at 01/0852Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 454 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on days one and two (02 Oct, 03 Oct) and quiet to unsettled levels on day three (04 Oct).
III. Event Probabilities 02 Oct to 04 Oct
Class M45%45%45%
Class X05%05%05%
Proton05%05%05%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       01 Oct 161
  Predicted   02 Oct-04 Oct 162/162/162
  90 Day Mean        01 Oct 162

V. Geomagnetic A Indices
  Observed Afr/Ap 30 Sep  011/014
  Estimated     Afr/Ap 01 Oct  009/009
  Predicted    Afr/Ap 02 Oct-04 Oct  012/015-011/012-008/008

VI. Geomagnetic Activity Probabilities 02 Oct to 04 Oct
A. Middle Latitudes
Active40%30%20%
Minor storm20%15%05%
Major-severe storm05%01%01%
B. High Latitudes
Active20%15%15%
Minor storm30%20%20%
Major-severe storm35%30%20%

All times in UTC

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