IA. Analysis of Solar Active Regions and Activity from 25/2100Z to
26/2100Z: Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a M7 event observed at
26/0315Z from Region 3938 (N21E40). There are currently 11 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast: Solar activity is expected to be moderate
with a slight chance for an X-class flare on days one, two, and three
(27 Dec, 28 Dec, 29 Dec).
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 454 km/s at 25/2146Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 867 pfu.
IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to active levels on day one (27 Dec), quiet to unsettled
levels on day two (28 Dec) and quiet levels on day three (29 Dec).
Protons have a slight chance of crossing threshold on days one, two, and
three (27 Dec, 28 Dec, 29 Dec).