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OK0NAG > SOLAR 21.04.11 14:03l 97 Lines 3569 Bytes #999 (0) @ EU
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_____________________________________________________________________
Solar-activity forecast for the period Apr 22 - 28, 2011
Activity level: mostly low to moderate
Radio flux (10.7 cm): a fluctuation in the range 100-140 f.u.
Flares: weak (numerous), middle (0-4/period)
Relative sunspot number: in the range 50-110
Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
(RWC Prague)
_____________________________________________________________________
Geomagnetic activity forecast for the period Apr 22 to Apr 28, 2011
quiet: Apr 23, 24 and 25
quiet to unsettled: Apr 22 and 28
unsettled: Apr 26 and 27
active: 0
minor storm: 0
major storm: 0
severe storm: 0
Geomagnetic activity summary:
geomagnetic field was quiet from Apr 14 to 19,
unsettled on Apr 20.
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:
quiet: Apr 22 - 24, 26 - 27, May 1, 4, 6, 12
mostly quiet: May 8, 11
quiet to unsettled: Apr 25, May 2, 7, 10, 13 - 14
quiet to active: Apr 30, May 5
quiet to minor storm: Apr 28, May 3, 9, 15 - 17
quiet to major storm: Apr 29
mostly unsettled: -
unsettled to active: -
unsettled to minor storm: -
active to minor storm: -
active to major storm: -
minor to major storm: -
Survey: quiet: Apr 15 - 17
mostly quiet: Apr 14, 19
quiet to unsettled: Apr 18
quiet to active: Apr 13, 20
quiet to minor storm: -
quiet to major storm: -
mostly unsettled: -
unsettled to active:
unsettled to minor storm: -
active to minor storm: -
active to major storm: -
minor to major storm: -
Notices:
High probability of changes in solar wind which may caused
changes in magnetosphere and ionosphere is expected about
April 28, May 2, 7 and 16 - 17.
Days in brackets refer to a lower probability of possible
activity enhancements depending on previous development
on the Sun. Present forecasts are less reliable.
F. K. Janda (OK1HH), Czech Propagation Interested Group
e-mail: ok1hh(at)rsys.cz
______________________________________________________________________
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