Subject: Weekly Highlights of Solar and Geomagnetic Activity, 02 - 08 November 2026

:Product: Weekly Highlights and Forecasts
:Issued: 2026 Nov 09 0258 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
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# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
02 - 08 November 2026

Solar activity reached Moderate (R1-Minor) levels following seven
M-class flares, all originating from Region 4566 (S06, L=147,
class/area Dkc/520 on 08 Nov). The largest of the period was an
M3.5/2b that peaked at 05/1833 UTC. This event was accompanied by a
Type II radio sweep (est. speed=609 km/s). The coinciding CME was
determined to have a trajectory too far east to have any impacts at
Earth. Additionally, 4566 produced the six following M-flares: an
M1.2 at 07/1243 UTC, an M1.4 at 07/0717 UTC, an M1.9 at 07/1842 UTC,
an M1.7/1f at 08/0746 UTC, an M1.1/1n at 08/1537 UTC, and an M1.1 at
08/1827 UTC. Region 4566 was also responsible for 75 of the 80
C-class flares during the period, with the largest registering a
C8.9 at 08/0324 UTC. Region 4570 (S13, L=106, class/area Axx/010 on
07 Nov) added four C-flares and Region 4564 (N03, L=208, class/area
Cro/030 on 05 Nov) contributed one.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
High levels every day of the period except 07 Nov, when it only
reached Moderate levels. The peak value during the period was 4,631
pfu at 06/1720 UTC.

Geomagnetic field activity was mostly quiet on 03 and 05 Nov, quiet
to unsettled on 02, 04, and 06 Nov, and reached G1 (Minor) storm
levels on 07-08 Nov. The increased activity at the end of the week
was attributed to the onset of a negative polarity CH HSS.

Forecast of Solar and Geomagnetic Activity
09 November - 05 December 2026

Solar activity is expected to be predominantly at low levels, with
moderate levels likely and a slight chance of reaching high levels
through 14 Nov when Region 4566 rotates off the visible disk.
Barring development of any other substantial regions, conditions
should then be at low levels, with a chance for moderate conditions
through 28 Nov when Region 4566 is expected to return to the visible
disk, bringing levels back to moderate again.

There is a slight chance proton levels could increase to S1 levels
at geosynchronous orbit through 14 Nov as Region 4566 transits the
visible disk, then again after it returns around 28 Nov.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at Moderate levels 15-18 Nov and 23-26 Nov, with High
levels anticipated for 09-14 Nov, 19-22 Nov, and 27 Nov-05 Dec.

Geomagnetic field activity is expected to be at mostly quiet levels
on 13-15 Nov, 20-25 Nov, and 29 Nov-03 Dec. Unsettled to active
periods are likely on 09-12 Nov, 16-19 Nov, 26-28 Nov, and 04-05
Dec, with G1 levels likely on 17,18, 27, and 28 Nov, and again on
04-05 Dec. The increased activity levels are attributed to CH HSS
influences.


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