IA. Analysis of Solar Active Regions and Activity from 17/2100Z to 18/2100Z: Solar activity has been at low levels for the past 24 hours. There are currently 11 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 Jul, 20 Jul, 21 Jul). IIA. Geophysical Activity Summary 17/2100Z to 18/2100Z: The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 670 km/s at 18/0647Z. Total IMF reached 7 nT at 17/2141Z. The maximum southward component of Bz reached -5 nT at 18/1552Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 10272 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on day one (19 Jul) and quiet levels on days two and three (20 Jul, 21 Jul). Protons have a slight chance of crossing threshold on days one, two, and three (19 Jul, 20 Jul, 21 Jul).
Data © 2025 NOAA NWS SPACE WEATHER PREDICTION CENTER