Routine Space Environment Product Issued Weekly
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FXXX06 KWNP 230456

:Product: 7-day Space Weather Highlights
:Issued: 2020 Nov 23 0446 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
16 - 22 November 2020

Solar activity was at very low to low levels. Region 2785 (S23,
L=359, class/area, Hsx/060 on 22 Nov) produced an impulsive C3/Sf
flare at 22/1731 UTC, the largest of the period, from the E limb.
Shortly after, the region produced a 160 sfu tenflare at 22/1943
UTC. Multiple CME signatures were observed in coronagraph imagery
that appear to have originated near the region; however, given the
proximity to the limb they are not likely to have an Earth-directed

Region 2783 (S23, L=072, class/area, Hsx/080 on 21 Nov) was mostly
stable through the week but did produce a C1/1f flare at 20/1703
UTC. Some coronal dimming was observed around the region between
21/1600-1800 UTC and may be associated with a slow-moving CME
signature seen in LASCO SOHO/C2 imagery after 21/2236 UTC. Analysis
and modeling of the event is ongoing.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal to moderate levels throughout the period.

Geomagnetic field activity ranged from quiet to G1 (Minor)
geomagnetic storm levels. Quiet levels were observed over 16-19 Nov.
A period of sustained southward Bz caused unsettled levels on 20
Nov. The onset of influence from a positive polarity CH HSS produced
active conditions on 21 Nov and peaked with an isolated period of G1
(Minor) geomagnetic storm conditions on 22 Nov. Solar wind speeds
increased to a peak between 600-650 km/s early on 22 Nov and
gradually declined after. Total magnetic field strength peaked
earlier with 12 nT observed at 21/2212 UTC and slowly declined to
below 5 nT by the end of the reporting period. The Bz component
reached a maximum southward deflection of -10 nT at 21/2212 UTC. is the U.S. government's official web portal to all federal, state and local government web resources and services.