Product: Weekly Highlights and Forecasts
:Issued: 2025 Nov 24 0142 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 17 - 23 November 2025
Solar activity was at low levels. C-class activity was observed from Regions 4274 (N25, L=274), 4284 (S07, L=177, class/area Dai/150 on 19 Nov), 4290 (S10, L=035, class/area Cao/120 on 22 Nov) and 4291 (S14, L=028, class/area Dao,120 on 22 Nov).
No proton events were observed at geosynchronous orbit.
The greater than 2 MeV electron flux at geosynchronous orbit reached high levels on 19-20 Nov with a peak flux of 2,880 pfu on 20/1435 UTC. Normal to moderate levels were reached on 17-18 Nov and 21-23 Nov.
Geomagnetic field activity was at mostly quiet to unsettled levels with isolated active levels observed early on 17 Nov and midday on 23 Nov. Solar wind parameters were enhanced midday on 20 Nov when Bt reached 18 nT and Bz reached values at -10 nT. Solar wind speeds began the highlight period at about 550 km/s, declined to near 325 km/s early on 20 Nov and gradually increased to about 500 km/s late on 23 Nov.
Forecast of Solar and Geomagnetic Activity 24 November - 20 December 2025
Solar activity is expected to be expected to be at R1-R2 (Minor-Moderate) levels on 28-30 Nov and 01-11 Dec, primarily due to the flare potential and return of old Region 4274. Mostly C-class activity is expected on 24-27 Nov and 12-20 Dec.
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 on 28-30 Nov, 01-03 Dec, 08-12 Dec and 16-17 Dec, all due to coronal hole influence. 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 G1-G2 (Minor-Moderate) geomagnetic storm levels. G1-G2 (Minor-Moderate) levels are likely on 26-27 Nov and 03-04 Dec due to anticipated influence from CH HSS. Unsettled to active conditions are likely on 24-25 Nov, 28-30 Nov, 05-07 Dec, 12-14 Dec and 17-19 Dec. Mostly quiet levels are likely on 01-02 Dec, 08-11 Dec, 15-16 Dec and 20
Dec.
Product: 27-day Space Weather Outlook Table 27DO.txt
:Issued: 2025 Nov 24 0142 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 2025-11-24
#
# UTC Radio Flux Planetary Largest
# Date 10.7 cm A Index Kp Index
2025 Nov 24 125 8 3
2025 Nov 25 125 12 5
2025 Nov 26 130 25 5
2025 Nov 27 135 25 5
2025 Nov 28 140 12 3
2025 Nov 29 145 8 3
2025 Nov 30 150 8 3
2025 Dec 01 155 5 2
2025 Dec 02 150 5 2
2025 Dec 03 155 25 5
2025 Dec 04 160 20 5
2025 Dec 05 170 12 4
2025 Dec 06 175 10 3
2025 Dec 07 170 8 3
2025 Dec 08 165 5 2
2025 Dec 09 160 5 2
2025 Dec 10 155 5 2
2025 Dec 11 150 5 2
2025 Dec 12 145 8 3
2025 Dec 13 135 18 5
2025 Dec 14 130 12 4
2025 Dec 15 130 5 2
2025 Dec 16 125 5 2
2025 Dec 17 125 8 3
2025 Dec 18 120 10 3
2025 Dec 19 120 8 3
2025 Dec 20 125 6 2
(NOAA)
