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Here is this week's space weather and geophysical report, issued 2015 Jun 15 0323 UTC.
Highlights of Solar and Geomagnetic Activity
08 - 14 June 2015
Solar activity ranged from very low to moderate levels (R1-minor)
with very low activity observed on 08 June, low activity observed on
09, 10 and 12 June and moderate activity observed on 11, 13 and 14
June. A majority of the flare activity occurred from Regions 2360
(N15, L=129, class/area Eac/220 on 12 June) and 2367 (S20, L=001,
class/area Ekc/340 on 14 June). Region 2367, the largest region on
the disk, produced an M1 flare at 11/0855 UTC. This region exhibited
steady growth since first rotating onto the disk on 10 June. Region
2360 produced an M1/Sf flare at 13/0729 UTC and an M2 flare at
14/0059 UTC while exiting the west limb on the 14th. Multiple
filament eruptions and eruptive prominences were observed throughout
the week, but none resulted in Earth-directed coronal mass
ejections.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels on 08-09 June. High levels on 10-13 June and moderate
levels on 14 June were observed in response to an enhanced solar
wind environment caused by the influence of a negative polarity
coronal high speed stream (CH HSS).
Geomagnetic field activity was at predominately quiet to active
levels with isolated minor storm levels (G1-minor) observed on 08
and 14 June and an isolated major storm period (G2-moderate)
observed on 08 June. The summary period began with unsettled to
major storm levels as Earth was under the influence of a negative
polarity CH HSS. Effects from the CH HSS persisted through midday on
11 June with quiet to active conditions. Quiet to unsettled
conditions were observed for the remainder of 11 June through 13
June. The period ended on 14 June with a co-rotating interaction
region in advance of a positive polarity CH HSS that affected
Earth's geomagnetic field with unsettled to isolated minor storm
periods.
Forecast of Solar and Geomagnetic Activity
15 June - 11 July 2015
Solar activity is expected to be at low levels with a slight chance
for M-class (R1-minor) flare activity from 15-24 June from Region
2367 (S20, L=001). As region 2367 rotates off the disk, very low to
low levels are expected on 25-26 June. Activity levels are expected
to increase to low with a slight chance for M-class flare activity
on 27 June - 11 July as old Region 2360 (N15, L=129) rotates back on
to the visible disk.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is
anticipated to reach moderate to high levels on 15-19 Jun and 07-11
Jul in response to an enhanced solar wind environment caused by the
influence of coronal hole high speed streams (CH HSSs). Normal
levels are expected for the remainder of the outlook period.
Geomagnetic field activity is expected to reach unsettled to active
levels on 15-16 Jun and 06-08 Jul with minor storm levels (G1-minor)
anticipated on 05 Jul and 11 Jul in response to recurrent CH HSS
effects. Generally quiet field conditions are expected for 17 Jun-04
Jul.
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![Weekly Propagation Summary - 2015 Jun 15 16:10 UTC]()
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