Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
403 FXXX12 KWNP 300031 DAYDIS :Product: Forecast Discussion :Issued: 2026 Aug 30 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 increased to low levels. Region 4517 (N09W72, Eai/beta) produced a few weak, impulsive C-class flares this period. The region showed some minor intermediate spot growth. Region 4520 (S12E20, Cro/beta) exhibited minor growth. The remaining regions were either stable or in decay. No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... Solar activity is expected to reach low levels with a chance for M-class (R1-R2/Minor-Moderate) activity on 30-31 Aug and 01 Sep. As Region 4517 rotates off the disk, C-class activity levels are expected to decrease to a chance with a slight chance for M-class activity. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux was at normal to moderate levels, and the greater than 10 MeV proton flux was at background levels. .Forecast... The greater than 2 MeV electron flux is expected to be at normal to moderate levels over 30 Aug, and increase to high levels on 31 Aug - 01 Sep. The greater than 10 MeV proton flux is expected to continue at background levels through 01 Sep. Solar Wind .24 hr Summary... Solar wind parameters were enhanced this period under positive polarity CH HSS influences. Total magnetic field strength reached a peak of 14 nT, while the Bz component reached as far south as -11 nT. Solar wind speeds increased from a low of around 350 km/s to a peak just over 525 km/s. The phi angle was predominately positive through much of the period with some variability observed throughout. .Forecast... Enhanced solar wind conditions are expected to continue through 30 Aug due to positive polarity CH HSS influences and the anticipated arrival of CMEs that departed the Sun on 25-26 Aug. A return to ambient solar wind conditions is expected by 31 Aug and continue on 01 Sep. Geospace .24 hr Summary... The geomagnetic field reached active levels due to positive polarity CH HSS influences. .Forecast... Active conditions are expected on 30 Aug due to positive polarity CH HSS influences, coupled with the anticipated arrival of CMEs that left the Sun on 25-26 Aug. Mostly quiet conditions are expected to prevail on 31 Aug and 01 Sep.