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OK0NAG > SOLAR 14.04.11 12:15l 98 Lines 3636 Bytes #999 (0) @ EU
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_____________________________________________________________________
Solar-activity forecast for the period Apr 15 - 21, 2011
Activity level: mostly low to moderate
Radio flux (10.7 cm): a fluctuation in the range 110-150 f.u.
Flares: weak (numerous), middle (1-6/period), large (0-1/period)
Relative sunspot number: in the range 100-160
Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
(RWC Prague)
_____________________________________________________________________
Geomagnetic activity forecast for the period Apr 15 to Apr 21, 2011
quiet: Apr 15, 16 and 17
quiet to unsettled: Apr 18
unsettled: Apr 20 and 21
active: Apr 19
minor storm: 0
major storm: 0
severe storm: 0
Geomagnetic activity summary:
geomagnetic field was quiet on Apr 7, 9 and 10,
quiet to unsettled on Apr 11, unsettled on Apr 8
and 13, unsettled to active on Apr 12.
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 15 - 16, 20 - 26, May 2
mostly quiet: Apr 17, 27 - 28, May 1
quiet to unsettled: Apr 18 - 19, May 7
quiet to active: May 4 - 6, 8 - 9
quiet to minor storm: Apr 30, May 3
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 7, 10
mostly quiet: Apr 9
quiet to unsettled: Apr 13
quiet to active: Apr 11
quiet to minor storm: Apr 6, 8, 12
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 and May 7.
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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