Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
037 FXXX12 KWNP 281231 DAYDIS :Product: Forecast Discussion :Issued: 2025 Nov 28 1230 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # http://www.swpc.noaa.gov/wwire.html # # Forecast Discussion # Solar Activity .24 hr Summary... Solar activity was at low levels with frequent C-class flares. The vast majority of these flares originated from a region that was just beyond the western limb, but should rotate into view within the next 24 hours. Region 4288 (N17W33, Cso/beta) underwent evolution with new spot development, but was relatively quiet. Region 4291 (S14W15, Dai/beta-gamma) continued to be the largest region on the visible disk, but showed signs of seperation between its two leading spots of opposite polarity which lead to the loss of its delta signature and signified a move towards more stable configuration in comparison to the previous reporting period. Region 4292 (S16W74, Hrx/alpha) underwent significant decay and was quiet. No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... Chances for M-class flare activity will remain slight for 28 Nov. Probabilities climb to a chance for isolated M-class flare activity on 29 Nov due to the current activity observed eminating from the SE limb. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux has remained above the 1,000 pfu threshold for most of the period, reaching a peak of approximately 8,300 pfu after days of being excited by faster solar wind. The greater than 10 MeV proton flux was at background levels. .Forecast... Electrons will remain high at geostationary orbit through 30 Nov due to ongoing effects from the CH HSS. The greater than 10 MeV proton flux is expected to remain at background levels. Solar Wind .24 hr Summary... Solar wind parameters remained disturbed and enhanced due to CH HSS influences. Total field ranged 4-7 nT and Bz component oscillated primarily between +/- 5 nT. Solar wind speeds were roughly between 600 and 700 km/s and phi was predominantly oriented in the positive solar sector. .Forecast... Solar wind parameters are anticipated to continue at or or near similar levels through 29 Nov with waning conditions thereafter. Geospace .24 hr Summary... The geomagnetic field reached G1 (Minor) geomagnetic storming conditions during the 12-15 UTC synoptic period. The field was at unsettled to active levels otherwise. .Forecast... G1 (Minor) geomagnetic storming periods are still possible for the remainder of 28 Nov. As CH HSS effects begin to diminish, unsettled to active conditions are expected on 29 Nov with primarily quiet to isolated unsettled periods prevailing on 30 Nov.