[A-DX] Funkprognose 20-26 August

[Wolf Harranth <harranth@xxxxxxxx>]

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Solar-activity forecast for the period Aug 20 - 26, 2004

Activity level: mostly very low to low
Radio flux (10.7 cm): a decrease in the range 140-80 f.u.
Flares: weak (5-15/day), middle (0-2/period)
Relative sunspot number: in the range 30-75

Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch@xxxxxxxxxx
(RWC Prague)
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Geomagnetic activity forecast for the period Aug 20 to 26, 2004

quiet: 0
quiet to unsettled: Aug 23 and 26
unsettled: Apr 21, 22, 24 and 25
active: Aug 20
minor storm: 0
major storm: 0
severe storm: 0

Geomagnetic activity summary: geomagnetic field was quiet from
Aug 13 to 16, quiet to unsettled on Aug 12 and 18, unsettled on
Aug 17.

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

Geomagnetic activity forecast for the period of one solar rotation

active:    Aug 20-24, (27-29,) Sep 1-3, 5-10, 13
disturbed: Aug 20-21, (22-23), Sep 6-9
quiet:     Aug (25-26,) 30-31, Sep 4, 11-12

Survey:   mostly quiet: Aug 13-14
          quiet to unsettled: Aug 12, 15-18
          mostly unsettled: Aug 11

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

Frantisek K. Janda, OK1HH, Czech Propagation Interested Group
e-mail: franta.janda@xxxxxxxx
_____________________________________________________________________

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