(Araucaria) Fwd: Solar activity forecast (AVHFC)

[PY2ZX]

Olá amigos, mais algumas informações sobre propagação (ionosférica) para
o AVHFC. 73 e boa sorte a todos!

Flávio PY2ZX
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Solar activity forecast for the period May 3 - 9, 2013

Activity level: mostly low
X-ray background flux (1.0-8.0 A): in the range B2.0-B9.5
Radio flux (10.7 cm): a fluctuation in the range 115-175 f.u.
Events: class C (0-15/day), class M (0-5/period), class X (0-1/period),
         proton (0-1/period)
Relative sunspot number (Ri): in the range 50-130

Astronomical Institute, Solar Dept., Ondrejov, Czech Republic
e-mail: sunwatch(at)asu.cas.cz
(RWC Prague)
______________________________

Geomagnetic activity forecast for the period May 3 - 19, 2013

Geomagnetic field will be:
quiet to unsettled on May 3 - 10, 13 - 19,
quiet to active on May 11 - 12.

High probability of changes in solar wind which may cause
changes in magnetosphere and ionosphere is expected
on May 4, 9 - 14, (17 - 18).

Remarks:
- Parenthesis means lower probability of activity enhancement.
- If during present year solar activity will not reach
a similar or higher level as in November 2011, then 2012
will remain to be the maximum of 24 cycle (R = 70) - and vice
versa.

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