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Solar activity report

Report of Solar-Geophysical Activity 2025 Apr 03 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 93 Issued at 2200Z on 03 Apr 2025

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. There are currently 7 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate with a slight chance for an X-class flare on days one, two, and three (04 Apr, 05 Apr, 06 Apr).
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic field has been at unsettled to minor storm levels for the past 24 hours. Solar wind speed reached a peak of 789 km/s at 03/0557Z. Total IMF reached 11 nT at 03/1937Z. The maximum southward component of Bz reached -11 nT at 03/1937Z. Protons greater than 10 MeV at geosynchronous orbit reached a peak level of 3 pfu at 02/2110Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 524 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to minor storm levels on days one and two (04 Apr, 05 Apr) and quiet to unsettled levels on day three (06 Apr). Protons have a slight chance of crossing threshold on days one, two, and three (04 Apr, 05 Apr, 06 Apr).
III. Event Probabilities 04 Apr to 06 Apr
Class M70%70%70%
Class X15%15%15%
Proton15%15%15%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       03 Apr 178
  Predicted   04 Apr-06 Apr 178/176/176
  90 Day Mean        03 Apr 178

V. Geomagnetic A Indices
  Observed Afr/Ap 02 Apr  016/022
  Estimated     Afr/Ap 03 Apr  018/025
  Predicted    Afr/Ap 04 Apr-06 Apr  013/018-017/020-008/010

VI. Geomagnetic Activity Probabilities 04 Apr to 06 Apr
A. Middle Latitudes
Active40%40%20%
Minor storm25%25%05%
Major-severe storm05%05%01%
B. High Latitudes
Active10%10%15%
Minor storm25%25%25%
Major-severe storm60%60%30%

All times in UTC

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