Viewing archive of Thursday, 26 August 2021

Solar activity report

Report of Solar-Geophysical Activity 2021 Aug 26 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 238 Issued at 2200Z on 26 Aug 2021

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 C3 event observed at 26/1818Z. There are currently 3 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 (27 Aug, 28 Aug, 29 Aug).
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 417 km/s at 26/0247Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 139 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on days one and two (27 Aug, 28 Aug) and quiet to unsettled levels on day three (29 Aug).
III. Event Probabilities 27 Aug to 29 Aug
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       26 Aug 089
  Predicted   27 Aug-29 Aug 090/090/090
  90 Day Mean        26 Aug 079

V. Geomagnetic A Indices
  Observed Afr/Ap 25 Aug  008/010
  Estimated     Afr/Ap 26 Aug  011/014
  Predicted    Afr/Ap 27 Aug-29 Aug  012/016-009/012-007/010

VI. Geomagnetic Activity Probabilities 27 Aug to 29 Aug
A. Middle Latitudes
Active40%30%20%
Minor storm20%10%05%
Major-severe storm05%01%01%
B. High Latitudes
Active10%15%15%
Minor storm25%30%30%
Major-severe storm55%40%25%

All times in UTC

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

Vorkuta

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

Arkhangelsk, Norilsk
The direction of the interplanetary magnetic field is slightly South (-8.55nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-59nT)

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