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Report of Solar-Geophysical Activity 2024 Jun 19 2010 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 170 Issued at 2200Z on 18 Jun 2024

IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z

Solar activity has been at moderate levels for the past 24 hours. The largest solar event of the period was a M2 event observed at 18/1123Z from Region 3712 (S26W12). 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 (19 Jun, 20 Jun, 21 Jun).
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 619 km/s at 18/0251Z. Total IMF reached 12 nT at 17/2351Z. The maximum southward component of Bz reached -5 nT at 180448/Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on day one (19 Jun), quiet to unsettled levels on day two (20 Jun) and quiet levels on day three (21 Jun). Protons have a slight chance of crossing threshold on day one (19 Jun) and have a slight chance of crossing threshold on days two and three (20 Jun, 21 Jun).
III. Event Probabilities 19 Jun to 21 Jun
Class M55%55%55%
Class X10%10%10%
Proton15%10%10%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       18 Jun 193
  Predicted   19 Jun-21 Jun 180/180/180
  90 Day Mean        18 Jun 176

V. Geomagnetic A Indices
  Observed Afr/Ap 18 Jun  011/010
  Estimated     Afr/Ap 18 Jun  009/010
  Predicted    Afr/Ap 19 Jun-21 Jun  014/015-008/008-006/005

VI. Geomagnetic Activity Probabilities 19 Jun to 21 Jun
A. Middle Latitudes
Active35%20%10%
Minor storm20%05%01%
Major-severe storm05%01%01%
B. High Latitudes
Active10%15%15%
Minor storm30%25%20%
Major-severe storm50%30%20%

All times in UTC

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