:Product: Weekly Highlights and Forecasts
:Issued: 2025 Jun 23 0047 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
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# Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic Activity
16 - 22 June 2025
Solar activity reached high levels on 17 and 19 Jun when Region 4114
(N21, L=35, class/area=Ekc/400 on 19 Jun), the largest and most
complex region on the disk throughout the week, produced an X1.2/2b
flare at 17/2149 UTC and an X1.9 flare at 19/2350 UTC; the strongest
events observed this period. In addition, Region 4114 produced five
R1 (Minor) events on 16-17 and 20 Jun, and one R2 (Moderate) event
on 16 Jun. Region 4117 (S14, L=303, class/area=210 on 19 Jun)
produced a single R1 (Minor) event this period; an M1.0/1f flare at
20/1740 UTC. No Earth-directed CMEs were observed throughout the
week.
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 was at quiet to active levels on 16,
18-19, and 21-22 Jun, with quiet to unsettled levels observed on 17
and 20 Jun, due to sustained positive polarity CH HSS influences
throughout the week. No Earth-directed CMEs were detected in solar
wind data.
Forecast of Solar and Geomagnetic Activity
23 June - 19 July 2025
Solar activity is expected to range from low to moderate levels
throughout the period. There is a chance for R1-R2 (Minor-Moderate)
radio blackouts, and a slight chance for R3 (Strong) or greater
events, through 18 Jul.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is
likely to reach high levels on 26-28 Jun, with normal to moderate
levels likely to prevail throughout the remainder of the period.
Geomagnetic field activity is likely to reach G1 (Minor) storm
levels on 25-26 Jun, and active levels on 24 and 27 Jun and 01-03,
05-06, and 11-12 Jul, all due to recurrent CH HSS influences. Quiet
and quiet to unsettled conditions are expected to prevail throughout
the remainder of the period.
Weekly Highlights of Solar and Geomagnetic Activity, 16 - 22 June 2025