Viewing archive of Monday, 26 September 2022

Solar activity report

Report of Solar-Geophysical Activity 2022 Sep 26 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 269 Issued at 2200Z on 26 Sep 2022

IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z

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 26/0911Z from Region 3107 (S25E01). There are currently 5 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 (27 Sep, 28 Sep, 29 Sep).
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 336 km/s at 26/2053Z. Total IMF reached 7 nT at 26/2056Z. The maximum southward component of Bz reached -4 nT at 26/1847Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 2641 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on days one and two (27 Sep, 28 Sep) and quiet levels on day three (29 Sep).
III. Event Probabilities 27 Sep to 29 Sep
Class M30%30%25%
Class X05%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       26 Sep 135
  Predicted   27 Sep-29 Sep 135/140/140
  90 Day Mean        26 Sep 125

V. Geomagnetic A Indices
  Observed Afr/Ap 25 Sep  005/006
  Estimated     Afr/Ap 26 Sep  004/004
  Predicted    Afr/Ap 27 Sep-29 Sep  008/008-007/008-005/005

VI. Geomagnetic Activity Probabilities 27 Sep to 29 Sep
A. Middle Latitudes
Active25%25%15%
Minor storm10%10%05%
Major-severe storm01%01%01%
B. High Latitudes
Active25%15%15%
Minor storm20%20%20%
Major-severe storm15%20%15%

All times in UTC

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G1 - Minor geomagnetic storm

Observed Kp: 5
Threshold reached: 23:37 UTC

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

Iqaluit, NU
Nuuk
Tórshavn
Oulu, Rovaniemi, Sodankylä
Reykjavik
Tromsø
Kiruna, Luleå
The Disturbance Storm Time index predicts moderate storm conditions right now (-67nT)

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