FXXX12 KWNP 070031 DAYDIS :Product: Forecast Discussion :Issued: 2025 Apr 07 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 returned to low levels as Regions 4045 (S13W60, Bxo/beta) and 4048 (S16W21, Fkc/beta-gamma) only managed to produce a couple of low level C-class flares each. Region 4045, previously an area of plage, redeveloped slightly during the period. Region 4048 lost many of its leader spots, but did have minor development in its trailer spots. Region 4054 was the only other region to exhibit any growth, adding several spots and showing an overall growth in area and magnetic complexity. The remaining regions were either stable or displayed slight decay during the period. No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... Solar activity is expected to be at low levels on 07-09 Apr, with R1-R2 (Minor-Moderate) radio blackouts likely, and a slight chance for X-class flares (R3, Strong radio blackouts). Energetic Particles .24 hr Summary... The greater than 2 MeV electron flux reached high levels, seeing a peak value of 9,242 pfu at 06/1505 UTC. The greater than 10 MeV proton flux was slightly elevated, but still near background levels. .Forecast... The greater than 2 MeV electron flux is expected to be at normal to high levels on 07-09 Apr due to CH HSS influence. The greater than 10 MeV proton flux is expected to be at background levels on 07-09 Apr. Solar Wind .24 hr Summary... Solar wind parameters remained enhanced as negative polarity CH HSS influence persisted. Total field leveled off to average between 6-8 nT, the Bz component fluctuated between +/-6 nT, and solar wind speeds appeared to be between 600-700 km/s, as measured at the ACE spacecraft. Phi angle remained in a negative orientation. .Forecast... Solar wind parameters are expected to see persistent HSS influence through 07-08 Apr as one negative polarity moves from a geoeffective position and another moves in. The enhancements should begin to decrease by 09 Apr as the CH moves from its geoeffective location. Geospace .24 hr Summary... The geomagnetic field began the period at G1 (Minor) storm levels, likely due to combined CME and negative polarity CH HSS effects. Conditions decreased to mostly unsettled levels by the end of the period as the first of several small CH HSS moved from a geoeffective location. .Forecast... The geomagnetic field is expected to see unsettled to active periods, with isolated G1 (Minor) storm conditions possible, on 07-08 Apr as the next negative polarity CH HSS moves into a geoeffective position. By the end of 09 Apr, conditions should return to mostly unsettled levels as the CH moves out of its geoeffective position.