domenica 12 giugno 2016

Weekly Forecasts Bulletin

Solar activity forecast for the period June 10 - June 16, 2016


Activity level: mostly very low to low
X-ray background flux (1.0-8.0 A): in the range A8.5-B3.0
Radio flux (10.7 cm): a fluctuation in the range 75-105 f.u.
Events: class C (0-6/day), class M (0-3/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 10-75

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

Geomagnetic activity forecast for the period June 10 - June 16, 2016


Quiet: Jun 10 - 11 and 14 - 16
Unsettled: Jun 11 - 13
Active:  possible Jun 12
Minor storm: 0
Major storm:0
Severe storm: 0

Geomagnetic activity summary:
At the Budkov observatory, we expect at most quiet to unsettled conditions
during the forecasted week.
An isolated active episode can occur between 12 - 13 June because of
coronal hole at the east edge of solar disk.

Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV)
Geomagnetic activity forecast for the period June 10 - July 6, 2016


Geomagnetic field will be:
quiet on June 19 - 20, July 1
mostly quiet on June 15 - 16, 21 - 22, 29 - 30, July 5 - 6
quiet to unsettled on June 10, 14, 25, 28, July 4
quiet to active on June 11 - 13, 17 - 18, 23 - 24, 26 - 27
active to disturbed on June (18), July 2 - 3

Amplifications of the solar wind from coronal holes are expected:
on June 11 - 13, 17 - 18, 23 - 24, 26 - 27, July 2 - 3


Remarks:
- Parenthesis means lower probability of activity enhancement.

Petr Kolman, OK1MGW
Czech Propagation Interested Group
(OK1HH & OK1MGW, weekly forecasts since 1978)
e-mail: kolmanp(at)razdva.cz