venerdì 24 giugno 2016

Weekly Forecasts Bulletin

Solar activity forecast for the period June 24 - June 30, 2016


Activity level: mostly very low
X-ray background flux (1.0-8.0 A): in the range A5.5-B1.0
Radio flux (10.7 cm): a fluctuation in the range 60-90 f.u.
Events: class C (0-1/day), class M (0/period), class X (0/period), proton (0/period)
Relative sunspot number (Ri): in the range 0-40

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 24 - June 30, 2016


Quiet: Jun 27 - 30
Unsettled: Jun 25 - 26
Active:  Jun 24 - 25
Minor storm: 0
Major storm:0
Severe storm: 0

Geomagnetic activity summary:
Yesterday, Jun 22, when Kp-index reached minor storm level, at Budkov
observatory, only one isolated active episode occured (originally,
predicted to Friday, Jun 24). We expect further active episodes at this
day, possibly continuing to Saturady, Jun 25.
Next days, we expect return to quiet to unsettled conditions. The quiet to
unsettled conditions should persist to Jun 30, then, we expect active
conditions again.

Tomas Bayer
RWC Prague
Institute of Geophysics of the ASCR, Prague
Department of Geomagnetism
Budkov observatory (BDV)

Geomagnetic activity forecast for the period June 24 - July 19, 2016


Geomagnetic field will be:
quiet on June 29 - 30, July 1, 16 - 17
mostly quiet on June 28, July 6, 10, 13 - 15,
quiet to unsettled on June 25 - 27, July 2, 5, 18
quiet to active on June 24, July 4, 7 - 9, 12, 19
active to disturbed on July 3, 11, 19

Amplifications of the solar wind from coronal holes are expected
on July 2 - 3, 6 - 7, 16

Remark:
- Parenthesis means lower probability of activity enhancement.

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