[A-DX] Funkprognose 17.-23. Dezember

[Wolf Harranth <harranth@xxxxxxxx>]

_____________________________________________________________________

Solar-activity forecast for the period Dec 17 - 23, 2004

Activity level: very low to low
Radio flux (10.7 cm): a fluctuation in the range 75-110 f.u.
Flares: weak (0-10/day)
Relative sunspot number: in the range 11-60

Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch@xxxxxxxxxx
(RWC Prague)
_____________________________________________________________________

Geomagnetic activity forecast for the period Dec 17 to Dec 23, 2004

quiet: Dec 19 and 20
quiet to unsettled: Dec 21
unsettled: Dec 18 and 23
unsettled to active: Dec 17 and 22
active: 0
minor storm: 0
major storm: 0
severe storm: 0

Geomagnetic activity summary: geomagnetic field was quiet on
Dec 9 and 15, quiet to unsettled on Dec 13 and 14, unsettled on
Dec 10 and 11, active on Dec 12.

RWC Prague, Geophysical Institute Prague, Geomagnetic Dept,
Czech Republic
e-mail: geom@xxxxxxxxx
_____________________________________________________________________

Geomagnetic activity forecast for the period of one solar rotation


active:    Dec 17-18, 22-28, Jan 2-5, (6-9)
disturbed: Dec (17-18),
quiet:     Dec (19-21), 29-31, Jan 1, 10-12

Survey:    quiet: Dec 15
           unsettled: Dec 14
           quiet to active: Dec 9-10, 13
           active to minor storm: Dec 11-12

Remarks: Days in brackets () => lower probability of activity
         (or lower accuracy of) forecast, depending on previous
         development on the Sun. In addition especially at this
         time of the solar cycle, space weather conditions are
         frequently determined by short timescale events, usually
         not able to be forecasted.

Petr Kolman, OK1MGW, Czech Propagation Interested Group
e-mail: kolmanp@xxxxxxxxx
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