Routine Space Environment Product Issued Weekly
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FXXX06 KWNP 160426
WEKHIL

:Product: 7-day Space Weather Highlights
:Issued: 2017 Oct 16 0358 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#                7-day Space Weather Highlights
#
Highlights of Solar and Geomagnetic Activity
09 - 15 October 2017

Solar activity was at very low levels and spotless with the
exception of the emergence of new Region 2684 (N11, L=312,
class/area Bxo/010 on 15 Oct) late in the period. No Earth-directed
coronal mass ejections were observed.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
moderate levels on 09-11 Oct, high levels on 12-14 Oct, and very
high levels on 15 Oct. The largest flux of the period was 59,298 pfu
observed at 15/1645 UTC.

Geomagnetic field activity ranged from quiet to G2 (Moderate) storm
levels. The period began with solar wind speeds between 300-400 km/s
and total field ranging from 1-5 nT on 09-10 Oct. The geomagnetic
field was at quiet levels on 09 Oct and quiet to unsettled levels on
10 Oct. By late on 10 Oct, total field and solar wind speed began to
increase as a polar connected, positive polarity, coronal hole high
speed stream (CH HSS) became geoeffective. Total field increased to
12 nT at 11/1115 UTC and solar wind speed gradually increased to a
maximum of 737 km/s at 14/0550 UTC. Solar wind speed slowly
decreased thereafter to near 550 km/s by the end of the period. The
geomagnetic field responded with unsettled to G1 (Minor) geomagnetic
storm levels on 11-12 Oct and 14-15 Oct. Quiet to G2 (Moderate)
storm levels were observed on 13 Oct.


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