giovedì 21 maggio 2015

Solar activity forecast for the period May 22 - 28, 2015

Solar activity forecast for the period May 22 - 28, 2015

Activity level: mostly very low to low
X-ray background flux (1.0-8.0 A): in the range B1.0-B7.5
Radio flux (10.7 cm): a fluctuation in the range 90-125 f.u.
Events: class C (0-10/day), class M (0-4/period), class X (0/period),
        proton (0/period)
Relative sunspot number (Ri): in the range 10-85

Jozef Lesko
RWC Prague, Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
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Geomagnetic activity forecast for the period May 22 - 28, 2015

First part of the next forecasted week (May 22-25), we expect at the
Budkov observatory at most quiet conditions.
The last two days (May 26-28), we expect quiet to unsettled conditions.

Tomas Bayer
Institute of Geophysics ASCR
Budkov Geomagnetic Observatory (BDV)
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Geomagnetic activity forecast for the period May 22 - June 17, 2015

Geomagnetic field will be:
quiet on May (22 - 23,) 26  - 27, June 13, 17
mostly quiet on May 24, 30, June 1, 4 - 5, 12,
quiet to unsettled on May 28 - 29, 31, June 6
quiet to active on May 25, June 3, 7 - 9, 14, 16
active to disturbed on June 2, 15
disturbed on June 10 - 11

Amplifications of the solar wind are still mostly unpredictable,
but some peaks are expected on May (22 - 23,) 30, June 2 - 3,
(8 - 9,) 12.

Remark:
- Reliability of predictions remains reduced.

F. K. Janda, OK1HH
Czech Propagation Interested Group
(OK1HH & OK1MGW, weekly forecasts since 1978)
e-mail: ok1hh(at)rsys.cz