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OK0NAG > SOLAR 07.04.11 12:15l 99 Lines 3647 Bytes #999 (0) @ EU
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Subj: Weekly Forecasts Bulletin
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_____________________________________________________________________
Solar-activity forecast for the period Apr 8 - 14, 2011
Activity level: mostly very low to low
Radio flux (10.7 cm): a fluctuation in the range 85-120 f.u.
Flares: weak (5-15/day), middle (0-1/period)
Relative sunspot number: in the range 50-90
Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
(RWC Prague)
_____________________________________________________________________
Geomagnetic activity forecast for the period Apr 8 to Apr 14, 2011
quiet: Apr 8 and 14
quiet to unsettled: Apr 9 and 13
unsettled: Apr 12
unsettled to active: Apr 10
active: Apr 11
minor storm: 0
major storm: 0
severe storm: 0
Geomagnetic activity summary:
geomagnetic field was quiet on Mar 31 and Apr 4,
quiet to unsettled on Apr 5, unsettled on Apr 1
and 3, active on Apr 2 and 6.
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 11 - 13, 15 - 16, 20 - 25,
mostly quiet: Apr 10, 19, 26 - 27, May 1 - 2
quiet to unsettled: Apr 14, 17 - 18,
quiet to active: Apr 9
quiet to minor storm: Apr 8, 28, 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: Mar 31
mostly quiet: -
quiet to unsettled: Mar 29 - 30, Apr 5
quiet to active: Apr 1, 4
quiet to minor storm: Apr 6
quiet to major storm: -
mostly unsettled: -
unsettled to active: Apr 3
unsettled to minor storm: Apr 2
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 for
April (21 - 22,) 23 and May (1) - 2 - (3).
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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