Solar-activity forecast for the period Apr 9 - 15, 2010

Activity level: mostly very low
Radio flux (10.7 cm): a fluctuation in the range 72-80 f.u.
Flares: weak (0-6/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 9 to Apr 15, 2010

quiet: Apr 10, 11 and 12
quiet to unsettled: Apr 9
unsettled: Apr 13 and 15
unsettled to active: Apr 14
active: 0
minor storm: 0
major storm: 0
severe storm: 0

Geomagnetic activity summary: geomagnetic field was unsettled
from Apr 1 to 4, unsettled to active on Apr 7, active on Apr 6, minor
storm on Apr 5.

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: May 2 - 3,
 unsettled to active: Apr ( 14), 28 - 30, May 1, 4 - 5
 quiet to unsettled: Apr 12 - 14, 21 - 22, 27
 quiet: Apr (9 - 11), (15 - 16), 17 - 20, 23 - 25, (26)

 Survey: quiet:
        mostly quiet: -
        quiet to unsettled: -
        quiet to active: -
        quiet to minor storm: -
        mostly unsettled: Apr 3
        unsettled to active: Apr 1 - 2, 4, 7
        minor to major storm: Apr 5 - 6
        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