Solar-activity forecast for the period Apr 30 - May 6, 2010

Activity level: mostly very low
Radio flux (10.7 cm): a fluctuation in the range 74-80 f.u.
Flares: weak (0-4/day)
Relative sunspot number: in the range 0-30

Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
(RWC Prague)

Geomagnetic activity forecast for the period Apr 30 to May 6, 2010

quiet: Apr 30, May 1, 2 and 6
quiet to unsettled: May 3
unsettled: May 4 and 5
active: 0
minor storm: 0
major storm: 0
severe storm: 0

Geomagnetic activity summary: geomagnetic field was quiet on
Apr 22 and from 24 to 28, unsettled on Apr 23.

RWC Prague, Geophysical Institute Prague, Geomagnetic Dept,
Czech Republic
e-mail: geom(at)ig.cas.cz

Geomagnetic activity forecast for the period of one solar rotation

Geomagnetic field during the following solar rotation should be:

active to disturbed:
unsettled to active: May 1 - 2, (3 - 4)
quiet to unsettled: Apr 30, May 5 - 7, (8 - 9), 11 - 12, 18 - 21, 24 - 26
quiet: May 10, 13 - 17, 22 - 23

Survey: quiet: Apr 25 - 26
       mostly quiet: Apr 28
       quiet to unsettled: Apr 27
       quiet to active: Apr 23 - 24
       quiet to minor storm: -
       mostly unsettled: -
       unsettled to active: -
       minor to major storm: -
       active to disturbed: -
       disturbed: -

  Notices:
       Days in brackets refer to a lower probability of possible
       activity enhancements depending on previous development on the sun.
       Accuracy and reliability of forecasts are generally low at present.

Petr Kolman, OK1MGW, Czech Propagation Interested Group
e-mail: kolmanp(at)razdva.cz