Solar activity was low. There was one C-class event at 0928 UTC from newly numbered Region 759 (N12E71). The group so far appears to be a moderately large D-type sunspot group. A CME was observed moving off the west limb at 1630 UTC but appears to be from the backside of the disk.

Solar activity is expected to be low. There is a slight chance for an isolated M-class event during the next three days.

The geomagnetic field ranged from active to major storm levels during the past 24 hours with a severe storm period at high latitudes from 1200-1500 UTC. Magnetopause crossings were seen at GOES-12 at about 1330 UTC and 1610 UTC. Solar wind speed increased during the past 24 hours with peak values just below 900 km/s from 0900-1300 UTC. Intervals of strongly negative Bz were seen around 07/2100-08/0100 UTC and again from 0900-1300 UTC. The solar wind signatures appear to indicate the onset of a coronal hole high speed stream which has been modified by transient flow from the CME of 06/1728 UTC. The greater than 10 MeV protons gradually decayed from enhanced levels to nearly background level by forecast issue time.

The geomagnetic field is expected to be at active to minor storm levels for the next two days (09-10 May) as the current disturbance persists. Conditions are expected to subside to mostly unsettled levels by the third day (11 May).

  Observé       08 May 101
  Prévisionnel   09 May-11 May  100/100/100
  Moyenne des 90 derniers jours        08 May 093

  Observé Afr/Ap 07 May  010/010
  Estimé     Afr/Ap 08 May  040/070
  Prévisionnel    Afr/Ap 09 May-11 May  025/030-020/030-010/015