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Subject: Weekly Highlights of Solar and Geomagnetic Activity, 11 - 17 November 2024
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Date: Mon, 18 Nov 2024 13:00:08 EST
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:Product: Weekly Highlights and Forecasts
:Issued: 2024 Nov 18 0220 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
#
#                Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
11 - 17 November 2024

Solar activity ranged from low to moderate levels this period. R1
(Minor) radio blackouts were observed on 11 Nov, 13 Nov and 15-16
Nov. Regions 3889 (S09, L=006, class/area Fki/540 on 15 Nov) and
3893 (S19, L=289, class/area Cso/050 on 15 Nov) produced a majority
of the activity this period. The largest flare of the period was an
M1.7 event observed on 13/1708 UTC from Region 3889. During the
period, a total of 33 C-class and 7 M-class flares were observed. 

No proton events were observed at geosynchronous orbit.

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

Geomagnetic field activity ranged from quiet to active levels.
Unsettled to active levels were observed on 11 Nov and 13-17 Nov,
all associated with positive polarity coronal hole high speed
streams (CH HSSs). During the period, solar wind parameters were at
mostly nominal levels through early on 14 Nov. Early on 14 Nov,
total field increased to 14 nT, while the Bz component dropped to
-13 nT. Wind speeds increased from about 305 km/s to a peak of about
460 km/s by late on 15 Nov. Wind speeds ended the period near 310
km/s. The phi angle was in a predominately positive sector
throughout the period. 

Forecast of Solar and Geomagnetic Activity
18 November - 14 December 2024

Solar activity is expected to be at low to moderate levels (R1/R2 -
Minor/Moderate), with a chance for high levels (R3 - Strong) from 18
Nov - 14 Dec. The disk is expected to feature numerous complex
regions throughout the outlook period. 

No proton events are expected at geosynchronous orbit. However,
there is a chance for proton activity following significant solar
flare activity during the outlook period. 

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at normal to moderate levels. 

Geomagnetic field activity is likely to be at unsettled to active
periods on 18 Nov, 20 Nov, 25-27 Nov, 30 Nov-03 Dec, 06-08 Dec and
11-14 Dec, all due to the influence from recurrent CH HSS effects.
Mostly quiet periods are likely on 19 Nov, 21-24 Nov, 28-29 Nov,
04-05 Dec and 09-10 Dec.