Viewing archive of Sunday, 3 December 2023

Solar activity report

Report of Solar-Geophysical Activity 2023 Dec 03 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 337 Issued at 2200Z on 03 Dec 2023

IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z

Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C4 event observed at 03/0806Z from Region 3494 (S17W96). 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 (04 Dec, 05 Dec, 06 Dec).
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 502 km/s at 03/2056Z. Total IMF reached 10 nT at 02/2108Z. The maximum southward component of Bz reached -5 nT at 03/1806Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at unsettled to major storm levels on day one (04 Dec), quiet to minor storm levels on day two (05 Dec) and quiet to active levels on day three (06 Dec).
III. Event Probabilities 04 Dec to 06 Dec
Class M30%30%25%
Class X05%05%05%
Proton05%05%05%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       03 Dec 139
  Predicted   04 Dec-06 Dec 136/134/130
  90 Day Mean        03 Dec 151

V. Geomagnetic A Indices
  Observed Afr/Ap 02 Dec  011/010
  Estimated     Afr/Ap 03 Dec  010/011
  Predicted    Afr/Ap 04 Dec-06 Dec  024/033-014/018-011/012

VI. Geomagnetic Activity Probabilities 04 Dec to 06 Dec
A. Middle Latitudes
Active35%35%20%
Minor storm30%15%05%
Major-severe storm15%01%01%
B. High Latitudes
Active15%15%15%
Minor storm20%20%15%
Major-severe storm30%20%10%

All times in UTC

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Active geomagnetic conditions

Observed Kp: 4
Threshold reached: 01:33 UTC

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

Gillam, MB, Yellowknife, NT

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

Iqaluit, NU, Saskatoon, SK
Nuuk
Reykjavik

S1 - Minor solar radiation storm

Minor impacts on HF radio through polar regions

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