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FXXX06 KWNP 120156

:Product: 7-day Space Weather Highlights
:Issued: 2015 Oct 12 0140 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
#                7-day Space Weather Highlights
Highlights of Solar and Geomagnetic Activity
05 - 11 October 2015

Solar activity was at very low levels throughout much of the period
(05-10 Oct) with only B-class flare activity observed. Solar
activity increased to low levels on 11 Oct due to a long-duration C3
flare at 11/2229 UTC from an unnumbered region behind the
southeastern limb. The seven numbered active regions on the visible
disk throughout the week were generally stable, simple, and
unproductive. No Earth-directed coronal mass ejections were observed
this period.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached
very high levels on 09, 11 Oct with high levels observed on 05-06,
08, and 10 Oct, all due to an enhanced solar wind environment and
increased geomagnetic activity caused by a coronal hole high speed
stream (CH HSS). Moderate flux levels were observed on 07 Oct.

Geomagnetic field activity was quiet to G1 (Minor) geomagnetic storm
levels on 05 Oct and quiet to active levels on 06 Oct due to brief
periods of southward Bz in addition to isolated periods of
substorming. The influence of a recurrent positive polarity CH HSS
caused active to G3 (Strong) geomagnetic storm levels on 07 Oct,
active to G2 (Moderate) geomagnetic storm levels on 08 Oct, and
unsettled to active conditions on 09 Oct. Quiet to active field
conditions were observed on 10-11 Oct due to waning CH HSS effects,
an enhanced solar wind environment, and localized substorming. is the U.S. government's official web portal to all federal, state and local government web resources and services.