:Product: Weekly Highlights and Forecasts :Issued: 2025 Nov 10 0522 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # https://www.swpc.noaa.gov/content/subscription-services # # Weekly Highlights and Forecasts # Highlights of Solar and Geomagnetic Activity 03 - 09 November 2025 Solar activity ranged from low to high levels. Region 4274 (N25, L=275, class/area=Ekc/900 on 09 Nov) was the largest and most complex, and responsible for the majority of major events during the past week. On 03 Nov, high levels were observed due to five M-class (R1-R2/Minor-Moderate) flares that were produced by Region 4274. Two flares had associated CMEs that were identified as containing potentially Earth-directed components, an M1.6 (R1) at 03/0925 UTC and an M5.0 (R2)at 03/1011 UTC. Arrival of the CMEs at Earth were estimated over 06-07 Nov. High activity levels continued on 04 Nov, with the high flare being an X1.8/1b (R3-Strong) flare at 04/1751 UTC from Region 4274. Associated with the flare was a Tenflare and Type IV radio sweep. Region 4276 (S17, L=240, class/area=Dai/180 on 07 Nov) also produced an X-class flare (R3) with an X1.1 flare at 04/2201 UTC with an associated Type IV radio sweep and CME. Analysis of the ejecta from these events suggested potential to affect Earth over 06-07 Nov. High solar activity was again observed on 05 Nov following an M 7.4/2N (R2) flare at 05/1119 UTC and an M8.6/2B (R2) flare at 05/2207 UTC from Region 4274. Tenflares and CMEs were associated with both events. Arrival at Earth was estimated over 07-08 Nov. Moderate levels were observed on 06-07 Nov due to an M1.1 (R1) flare at 06/0431 UTC from Region 4276 and an M1.7/1n (R1) at 07/0716 UTC flare from Region 4274. Associated with the M1.7 was a Type II (est 1,169 km/s) and Type IV radio sweep alongside a CME that was likely to propogate off of the Sun-Earth line. Low solar activity was observed on 08 Nov. Finally, on 09 Nov, Region 4274 produced an X1.7 (R3) flare at 09/0735 UTC. A complicated CME signature was observed in subsequent coronagraph imagery. Analysis and modelling of the event suggested potential for arrival at Earth over 11-12 Nov. No proton events were observed at geosynchronous orbit between 03-09 Nov. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels on 03-05 Nov and at moderate levels on 06-09 Nov. The maximum flux of the greater than 2 MeV electrons measured by GOES-19 satellite during the week was 2,440 pfu at 04/1805 UTC. Geomagnetic field activity was between quiet to G3 (Strong) geomagnetic storm levels. Active conditions on 03 Nov were observed due to weak influence from a CME that left the Sun on 31 Oct. Unsettled conditions were observed on 04 Oct due to positive polarity coronal hole influence. G2 (Moderate) geomagnetic storm conditions late on 05 Nov and G3 (Strong) geomagnetic storm conditions early on 06 Nov resulted from the onset of a CME that left the Sun on 03 Nov. G1 (Minor) storm levels were observed late on 06 Nov and in to 07 Nov as more CMEs that left the Sun over 03-04 Nov passed by Earth. G2 conditions were again observed on 08 Nov due to the passage of a CME that left the Sun on 04 Nov. Only quiet to unsettled condtions were observed on 09 Nov. Forecast of Solar and Geomagnetic Activity 10 November - 06 December 2025 Solar activity is likely to be at moderate levels (R1-Minor), with a chance for high (R2-R3/Moderate-Strong), over 10-18 Nov, primarily due to the flare potential from Regions 4274 and 4276. The remainder of the outlook period is likely to be at low levels, with a chance for moderate activity. No proton events are expected at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit is expected to be at high levels over 10-13 Nov following a combination of CME and coronal hole influence. High levels are again likely on 27 Nov-02 Dec due to influence from a recurrent, positive polarity CH HSS. The remainder of the outlook period is likely to be at normal to moderate levels. Geomagnetic field activity is expected to range from quiet to G2 (Moderate) geomagnetic storm levels. G1 (Minor) conditions are likely on 11 Nov due to anticipated influence from both a negative polarity coronal hole and a CME that left the Sun 07 Nov. G2 conditions are likely on 11-12 Nov due to anticipated influence from CMEs that left the Sun on 09 Nov. Unsettled conditions are likely over 13 Nov as CME influence wanes. Recurrent coronal hole influence is likely to cause G1 conditions over 25-27 Nov and 02-04 Dec; active condition on 20 Nov, 24 Nov, 29-30 Nov, and 05 Dec; unsettled conditions on 16 Nov, 21 Nov, 28 Nov, 01 Dec, and 06 Dec. The remainder of the outlook period is likely to be at mostly quiet levels.