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Solar activity report

Report of Solar-Geophysical Activity 2024 Oct 07 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 281 Issued at 2200Z on 07 Oct 2024

IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z

Solar activity has been at high levels for the past 24 hours. The largest solar event of the period was a X2 event observed at 07/1913Z from Region 3842 (S15W63). There are currently 9 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be moderate with a chance for X-class flares on days one and two (08 Oct, 09 Oct) and likely to be moderate with a chance for X-class flares on day three (10 Oct).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic field has been at unsettled to major storm levels for the past 24 hours. Solar wind speed reached a peak of 697 km/s at 07/0344Z. Total IMF reached 16 nT at 07/1617Z. The maximum southward component of Bz reached -14 nT at 07/1728Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 219 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at unsettled to major storm levels on day one (08 Oct), quiet to unsettled levels on day two (09 Oct) and quiet levels on day three (10 Oct). Protons have a chance of crossing threshold on day one (08 Oct) and have a chance of crossing threshold on days two and three (09 Oct, 10 Oct).
III. Event Probabilities 08 Oct to 10 Oct
Class M75%75%70%
Class X30%30%25%
Proton30%25%25%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       07 Oct 277
  Predicted   08 Oct-10 Oct 260/255/250
  90 Day Mean        07 Oct 223

V. Geomagnetic A Indices
  Observed Afr/Ap 06 Oct  013/012
  Estimated     Afr/Ap 07 Oct  030/050
  Predicted    Afr/Ap 08 Oct-10 Oct  022/030-007/008-006/005

VI. Geomagnetic Activity Probabilities 08 Oct to 10 Oct
A. Middle Latitudes
Active40%25%10%
Minor storm20%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active10%15%15%
Minor storm25%30%20%
Major-severe storm55%30%15%

All times in UTC

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Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Tórshavn
Oulu, Rovaniemi, Sodankylä, Utsjoki
Kirkenes, Tromsø, Trondheim
Arkhangelsk, Murmansk, Norilsk, Vorkuta
Kiruna, Luleå, Umeå
The Disturbance Storm Time index predicts moderate storm conditions right now (-64nT)

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