Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
906 FXXX12 KWNP 040306 DAYDIS :Product: Forecast Discussion :Issued: 2026 Sep 04 0305 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. Region 4521 (N09E26, Hsx/alpha) was relatively stable and quiet. Region 4523 (N10E36, Cao/beta) produced multiple C-class flares, the most notable of which was a C7.0 flare at 03/1446 UTC. Region 4524 (N12E66, Hax/alpha) produced a C7.9 flare at 03/1630 UTC. This event was associated with a Type II radio sweep with an estimated speed of 1,359 km/s. Given the source location, the associated CME related to this event is not expected to have an Earth-directed component. Additional CMEs originating from beyond the eastern limb were observed during the period, indicating a good chance for a returning active region within the next 24 hours. .Forecast... Solar activity will likely reach low levels due to occasional C-class flare activity, with a slight chance for M-class flares (R1-R2/Minor-Moderate), through 06 Sep. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux reached high levels with a peak flux of 2,700 pfu observed at 03/1550 UTC. The greater than 10 MeV proton flux was at background levels. .Forecast... The greater than 2 MeV electron flux is expected to reach high levels through 04 Sep before decreasing to normal to moderate levels on 05-06 Sep. The greater than 10 MeV proton flux is expected to continue at background levels through 06 Sep. Solar Wind .24 hr Summary... Solar wind parameters were at mostly nominal levels. Total field was slightly elevated at 8 nT, likely due to current sheet interaction. However, Bz was benign, ranging -4 to 6 nT. Solar wind speeds largely remained under 400 km/s and phi was predominantly negative while undertaking brief excursions to a positive solar sector. benign .Forecast... Solar wind conditions are expected to largely remain at ambient-like levels through 05 Sep. Enhancements due to a solar sector boundary crossing (SSBC) are anticipated by late on 06 Sep. Geospace .24 hr Summary... The geomagnetic field was quiet. .Forecast... Mostly quiet levels are expected to prevail through 05 Sep. Isolated unsettled conditions are likely by late on 06 Sep due to aforementioned SSBC effects.