:Product: Weekly Highlights and Forecasts
:Issued: 2025 May 12 0245 UTC
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# Weekly Highlights and Forecasts
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Highlights of Solar and Geomagnetic Activity
05 - 11 May 2025

Solar activity reached moderate levels in the final minutes of 11
May following an M-class event that peaked after the turn of the UT
day. Solar activty was low the remainder of the time (05-10 May)
leading up to that event. Region 4079 (N08, L=240,
class/area=Ekc/1250 on 06 May) was responsible for what ended up
being an M1.9 flare that peaked at 12/0001 UTC. This region was also responsible for 54 C-class events during the week, most of which
were sub C5 level. Region 4082 (S11, L=180, class/area=Dac/140 on 06
May) contributed a pair of C7.0 flares at 08/1141 and 08/1500 UTC
respectively, as well as several other low level C-class flares. No
significant Earth-directed CMEs were noted during the period.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
high levels on 06-09 May, and moderate levels on 10-11 May.

Geomagnetic field activity was at quiet to unsettled levels on 07
May, quiet to active levels on 06 and 08-10 May, and active to minor
storm levels on 05 and 11 May. The increased activity was likely
associated with negative polarity CH HSS influence.

Forecast of Solar and Geomagnetic Activity
12 May - 07 June 2025

Solar activity is expected to be predominently low through the
outlook period, with varying chances for M-class flare activity.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to be at moderate levels from 06-28 May and again on 06-07
Jun. High levels are expected from 29 May to 05 Jun as CH HSS
influences increase during this time.

Geomagnetic field activity is anticipated to reach minor storm
levels on 28 May - 01 Jun under negative polarity CH HSS influences.
Active levels are likely on 13 May, and again on 02 Jun and 06 Jun.
Mostly unsettled levels are likely on 12, 14, and 18-21 May, as well
as 02 and 05 Jun. Quiet levels are expected on 15-17, and 22-26 May.


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* Origin: NOAA Space Weather Prediction Center (3:633/280.2@fidonet)