Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
890 FXXX12 KWNP 260031 DAYDIS :Product: Forecast Discussion :Issued: 2025 Apr 26 0030 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 remained at low levels. Region 4077 (S17E62, Dao/beta) produced the largest event of the period, a C3.0 flare at 25/0405 UTC. Regions 4064 (N11W45, Dki/beta) and 4070 (S12W01, Dai/beta) were the largest on the disk but remained mostly quiet over the past 24 hours. Only minor changes were observed in the 15 numbered regions with sunspots on the visible disk. No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... Solar activity is expected to be moderate with a chance of M-class flares (R1-R2, Minor-Moderate) over 26-28 Apr. Energetic Particles .24 hr Summary... The greater than 2 MeV electron flux was at moderate levels and the greater than 10 MeV proton flux was at background levels. .Forecast... The greater than 2 MeV electron flux is likely to be at normal to moderate levels over 26-28 Apr. The greater than 10 MeV proton flux is expected to continue at background levels. Solar Wind .24 hr Summary... Solar wind parameters reflected the continued but waning influence of a positive polarity CH HSS. Total magnetic field strength was between 5-7 nT. No significant periods of southward Bz were observed. Solar wind speeds gradually declined from ~500 km/s to ~450 km/s by the end of the reporting period. Phi angle was predominantly positive. .Forecast... Solar wind parameters are expected to continue to be influenced by positive polarity, CH HSS conditions through 28 Apr. Geospace .24 hr Summary... The geomagnetic field has been at quiet levels. .Forecast... The geomagnetic field is expected to remain at mostly quiet to unsettled levels, with isolated active conditions likely on 26 and 28 Apr, due to influence from multiple positive polarity CH HSSs.