Routine Space Environment Product Issued Weekly
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WEKHIL

:Product: 7-day Space Weather Highlights
:Issued: 2024 Feb 26 0223 UTC
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#                7-day Space Weather Highlights
#
Highlights of Solar and Geomagnetic Activity
19 - 25 February 2024

Solar activity reached high levels on 21 and 22 Feb and moderate
levels on 23-25 Feb. The strongest of these events was an X6.3
(R3-Strong) flare at 22/2234 UTC, the strongest so far of the
current solar cycle, from Region 3590 (N18, L=223,
class/area=Fkc/1450 on 25 Feb), the largest region of the solar
cycle so far. The region was responsible for two of other X-class
flares, an X1.2 at 21/2307 UTC and an X1.7/2b at 22/0632 UTC, as
well as 10 M-class (R1-Minor) flares. Despite the pronounced
increase in flare activity, no Earth-directed CMEs were associated
with the events from the Region. A Type II radio sweep on 21 Feb as
well as a Type II and IV radio sweep on 22 Feb were both associated
with events that were off the Sun-Earth line. While there were 13
other numbered active regions on the visible disk this week, they
were either quiet or only produced C-class X-ray events.

Other activity included a filament eruption in the NW quadrant
beginning around 21/1500 UTC. Analysis and modeling suggested a
glancing blow would be possible around 25 Feb.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit reached
moderate levels.

Geomagnetic field activity was mostly quiet through 23 Feb, with a
single isolated period of unsettled observed late on 20 Feb due weak
transient influence. Late on 24 Feb, the arrival of a CME from the
filament eruption on 21 Feb was observed. The geomagnetic field
responded with unsettled conditions that would persist through 25
Feb.


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