Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
758 FXXX12 KWNP 040031 DAYDIS :Product: Forecast Discussion :Issued: 2025 Jul 04 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 was at low levels. Only low-level C-class X-ray activity was observed. Region 4127 (S19W22, Dac/beta) was the most complex on the visible disk and exhibited growth over the past 24 hours. In the remaining seven numbered, spotted, active regions, only minor changes were observed. Other activity included two eruptive prominences that lifted off both the E and W limbs between ~03/0500-0700 UTC. The resulting CMEs observed in coronagraph imagery are not expected to contain any Earth-directed component. .Forecast... There exists a slight chance for R1-R2 (Minor-Moderate) radio blackouts over 04-06 Jul. Energetic Particles .24 hr Summary... The greater than 2 MeV electron flux reached high levels. The greater than 10 MeV proton flux was at background levels. .Forecast... The greater than 2 MeV electron flux is expected to be at high levels over 04-06 July. The greater than 10 MeV proton flux may observed a minor increase over background levels due to recent CME activity from around the W limb. Solar Wind .24 hr Summary... Solar wind parameters reflected weak CME influence. Total field increased to mostly between 10-15 nT. The Bz component briefly reached as far south as -13 nT. Solar wind speeds ranged from 326-411 km/s. Phi angle was variable, but settled into a mostly negative sector after 03/1150 UTC. .Forecast... Enhancements in the solar wind parameters are likely to transition from CME influence into a negative polarity CH HSS over 04-05 Jul. HSS influence is likely to continue through 06 Jul. Geospace .24 hr Summary... The geomagnetic field was quiet to active. .Forecast... The geomagnetic field is expected to reach to active periods, with a chance for G1 (Minor) storming, over 04 Jul due to persistent CME effects. Unsettled conditions are likely over 05-06 Jul in response to anticipated influence from a negative polarity coronal hole.