Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 94 Issued at 2200Z on 04 Apr 2015
IA. Analysis of Solar Active Regions and Activity from 03/2100Z to 04/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 04/1154Z from Region 2318 (N09E57). There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast: Solar activity is likely to be low with a slight chance for an M-class flare on days one, two, and three (05 Apr, 06 Apr, 07 Apr).
IIA. Geophysical Activity Summary 03/2100Z to 04/2100Z: The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed, as measured by the ACE spacecraft, reached a peak speed of 607 km/s at 04/0241Z. Total IMF reached 6 nT at 03/2137Z. The maximum southward component of Bz reached -5 nT at 03/2137Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 281 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to unsettled levels on days one, two, and three (05 Apr, 06 Apr, 07 Apr).
