Product: Weekly Highlights and Forecasts
:Issued: 2026 Jan 26 0257 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 19 - 25 January 2026
Solar activity reached moderate levels on 19 and 21 Jan with three M-class flares (R1-Minor) observed. Region 4345 (S17, L=39, class/area=Esi/160 on 24 Jan) produced an M1.1 flare at 19/1119 UTC and an M1.1/Sf flare at 21/0135 UTC. Region 4349 (S14, L=336, class/area=Dso/230 on 25 Jan) produced an M3.4/1b flare at 21/0712 UTC, the strongest flare of the week. No Earth-directed CMEs were observed in association with flare activity from 19-25 Jan.
The greater than 10 MeV proton flux reached S4 (Severe) storm levels on 19 Jan, decreased to S2 (Moderate) levels on 20 Jan, and remained at S1 (Minor) levels on 21-22 Jan following an X1.9/3b flare from Region 4341 that peaked at 18/1809 UTC. Proton fluxes gradually declined over 23-25 Jan.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 19 and 21-25 Jan, with normal to moderate levels observed on 20 Jan.
Geomagnetic field activity reached G4 (Severe) storm levels on 19-20 Jan and G3 (Strong) levels on 21 Jan following the arrival of a halo CME associated with the X1.9/3b flare at 18/1809 UTC from Region 4341. G1 (Minor) storming was observed on 22 Jan due to lingering CME effects and the onset of positive polarity CH HSS influences. Active conditions were observed on 23-24 Jan, with quiet to unsettled levels observed on 25 Jan, in response to continued positive polarity CH HSS influences.
Forecast of Solar and Geomagnetic Activity 26 January - 21 February 2026
Solar activity is expected to be predominantly low with a varying chance for M-class flares (R1-R2/Minor-Moderate) through 21 Feb. 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 26, 28-31 Jan and 01-03, 06-12, 15-21 Feb. Normal to moderate flux levels are expected to persist through the remainder of the period.
Geomagnetic field activity is likely to reach G1 (Minor) storm levels on 28 Jan and 13 Feb, with active periods likely on 29 Jan and 04-05, 14-21 Feb, due to the influences of multiple, recurrent CH HSSs. Quiet and quiet-to-unsettled conditions are expected to prevail throughout the remainder of the outlook period.
:Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2026 Jan 26 0257 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 2026-01-26
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2026 Jan 26 160 8 3
2026 Jan 27 150 8 3
2026 Jan 28 145 24 5
2026 Jan 29 135 18 4
2026 Jan 30 130 10 3
2026 Jan 31 120 8 3
2026 Feb 01 120 5 2
2026 Feb 02 130 5 2
2026 Feb 03 140 5 2
2026 Feb 04 140 15 4
2026 Feb 05 130 12 4
2026 Feb 06 120 10 3
2026 Feb 07 125 8 3
2026 Feb 08 130 8 3
2026 Feb 09 135 10 3
2026 Feb 10 140 8 3
2026 Feb 11 135 8 3
2026 Feb 12 140 5 2
2026 Feb 13 145 20 5
2026 Feb 14 145 15 4
2026 Feb 15 155 15 4
2026 Feb 16 160 15 4
2026 Feb 17 170 15 4
2026 Feb 18 180 15 4
2026 Feb 19 175 15 4
2026 Feb 20 170 15 4
2026 Feb 21 160 15 4
(NOAA)
