Product: Weekly Highlights and Forecasts
:Issued: 2026 Jan 12 0311 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 05 - 11 January 2026
Solar activity ranged from low to moderate levels. Forty-five weak to middle-level C-class activity was observed from various regions on the disk during the period. A majority of the activity was observed from Regions 4334 (S16, L=200, class/area Dao/150 on 08 Jan), 4336 (S10, L=166, class/area Eko/430 on 09 Jan) and 4337 (N25, L=243, class/area Dao/020 on 08 Jan). At 11/2314 UTC, a long-duration M3.3 (R1-Minor) flare was observed from behind the ESE limb. Several potential Earth-directed CMEs were observed leaving the Sun on 08 Jan with possible impact on late 10 Jan to early on 11 Jan.
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels on 05, 08, 09 and 11 Jan with high levels observed on 06, 07, and 10 Jan. A peak flux of 2,507 pfu was observed on 10/1635 UTC.
Geomagnetic field activity was at quiet to active levels on 05 Jan in response to declining CH HSS influence. Quiet levels were observed on 06 and 07 Jan. Quiet to active levels were observed on 08, 09 and early 10 Jan due to CH HSS influence. Activity levels increased to G1 (Minor) to G2 (Moderate) activity levels during late 10 Jan through 11 Jan due to CME effects from the 08 Jan CME coupled with CH HSS effects.
Forecast of Solar and Geomagnetic Activity 12 January - 07 February 2026
Solar activity is likely to remain at low levels, with a chance for R1 (Minor) conditions and a slight chance for R2/R3 (Moderate/Strong) over the next forecast period due to multiple regions on the visible disk as well as regions expected to return.
No proton events are expected at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit is expected to reach high levels on 12, 14-15, 21-27, and 30-31 Jan and 01-03 and 05-07 Feb due to the anticipated influence of multiple, recurrent coronal holes. The remainder of the outlook period is likely to be at normal to moderate levels.
Geomagnetic field activity is likely to reach G1 (Minor) geomagnetic storm levels on 12 and 29 Jan; unsettled to active levels on 13-16, 19-23, 27-28, 30-31 Jan and 04-07 Feb. All enhancements in geomagnetic activity are due to the anticipated influence of
multiple, recurrent CH HSSs. The remainder of the outlook period is expected to be mostly quiet.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2026 Jan 12 0312 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 2026-01-12
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2026 Jan 12 110 28 6
2026 Jan 13 110 18 4
2026 Jan 14 112 12 4
2026 Jan 15 110 8 3
2026 Jan 16 108 8
2026 Jan 17 106 5 2
2026 Jan 18 106 5 2
2026 Jan 19 110 18 4
2026 Jan 20 115 15 4
2026 Jan 21 125 12 4
2026 Jan 22 135 8 3
2026 Jan 23 140 6 2
2026 Jan 24 135 6 2
2026 Jan 25 135 6 2
2026 Jan 26 135 6 2
2026 Jan 27 130 10 3
2026 Jan 28 125 15 4
2026 Jan 29 125 25 5
2026 Jan 30 130 12 4
2026 Jan 31 130 10 3
2026 Feb 01 125 5 2
2026 Feb 02 120 5 2
2026 Feb 03 115 5 2
2026 Feb 04 110 15 4
2026 Feb 05 105 12 4
2026 Feb 06 105 10 3
2026 Feb 07 110 8 3
(NOAA)
