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 web contact www.swpc.noaa.gov/content/subscription-services
#
# 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.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2025 Jun 23 0047 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC web contact www.swpc.noaa.gov/content/subscription-services
#
# 27-day Space Weather Outlook Table
# Issued 2025-06-23
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2025 Jun 23 125 12 3
2025 Jun 24 120 12 4
2025 Jun 25 125 35 5
2025 Jun 26 130 25 5
2025 Jun 27 135 15 4
2025 Jun 28 140 15 3
2025 Jun 29 145 10 3
2025 Jun 30 145 5 2
2025 Jul 01 140 15 4
2025 Jul 02 140 15 4
2025 Jul 03 140 12 4
2025 Jul 04 145 5 2
2025 Jul 05 150 15 4
2025 Jul 06 155 15 4
2025 Jul 07 150 10 3
2025 Jul 08 155 10 3
2025 Jul 09 155 10 3
2025 Jul 10 150 5 2
2025 Jul 11 150 15 4
2025 Jul 12 145 15 4
2025 Jul 13 140 10 3
2025 Jul 14 145 10 3
2025 Jul 15 145 12 3
2025 Jul 16 145 12 3
2025 Jul 17 140 10 3
2025 Jul 18 135 10 3
2025 Jul 19 130 10 3
(NOAA)
