Routine Space Environment Product Issued Weekly
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FXXX06 KWNP 200126
WEKHIL

:Product: 7-day Space Weather Highlights
:Issued: 2017 Feb 20 0107 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
13 - 19 February 2017

Solar activity was at very low levels with only weak background
flare activity observed. An 11 degree long filament eruption,
centered near N08E02, was observed in SDO/AIA 193 imagery beginning
around 19/0525 UTC. A faint CME was observed off the NE limb,
observed in LASCO C2 imagery, at around 19/0648 UTC. WSA-Enlil
analysis indicated a possible glancing blow at Earth mid to late on
22 Feb. No other activity was observed.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached
high levels on 13-14 Feb with moderate levels observed on 15-19 Feb.

Geomagnetic field activity was at quiet levels on 13-15 Feb, quiet
to isolated unsettled to active levels on 16 Feb, quiet to active
levels on 17-18 Feb and quiet to unsettled levels on 19 Feb. A
recurrent, positive polarity coronal hole high speed stream (CH HSS)
became geoeffective early on 17 Feb affecting the geomagnetic field
through late on 19 Feb. During this period, solar wind speeds
generally ranged from 500-600 km/s, total field Bt peaked at 13 nT
early on 17 Feb while the Bz component reached a maximum southward
extent of -8 nT early on 17 Feb. Phi angle was in a predominately
positive orientation.


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