Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
913 FXXX12 KWNP 030031 DAYDIS :Product: Forecast Discussion :Issued: 2025 Aug 03 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 4153 (S27, L=220) continued to produce C-class flares as it completed its transit of the SW limb. It was responsible for a C3.6 flare at 02/1109 UTC, the largest of the period. Region 4167 (N12W31, Dki/beta-gamma) remained the largest and most complex on the disk, picking up additional intermediate spots. This region was responsible for the majority of the flare activity, including several C1, C2, and C3 flares. Newly numbered Region 4168 (N06E29, Cai/beta-gamma) continued to exhibit growth, and added a C3.1/Sf flare at 02/1801 UTC. The other active regions were either stable or showed signs of decay. No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... Solar activity is expected to be low with a chance for M-class flares (R1-R2/Minor-Moderate) over 03-05 Aug. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux remained at moderate levels with a peak flux below 1,000 pfu. The greater than 10 MeV proton flux was steady at background levels throughout the period. .Forecast... The greater than 2 MeV electron flux is expected to be at moderate levels on 03-05 Aug. The greater than 10 MeV proton flux is expected to continue at background levels over 03-05 Aug. Solar Wind .24 hr Summary... The solar wind environment remained slightly enhanced due to diminishing influence from a negative polarity CH HSS. Total magnetic field strength averaged near 7 nT, the Bz component had an isolated deflection to -5 nT, but was predominantly variable between +6 nT and -4 nT, and solar wind speeds varied between ~440-555 km/s. Phi angle was predominantly oriented in the negative sector. .Forecast... Solar wind parameters are expected to continue to move towards background levels over 03-04 Aug. Minor disturbances are likely on 05 Aug due to the anticipated influence of another, small, negative polarity CH HSS. Geospace .24 hr Summary... The geomagnetic field was at quiet to unsettled levels. .Forecast... Mostly quiet levels are expected to return on 03-04 Aug under a near-background solar wind regime. Unsettled levels are again likely, with a chance for isolated active periods, on 05 Aug, due to the anticipated influence from another negative polarity CH HSS.