Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
537 FXXX12 KWNP 111231 DAYDIS :Product: Forecast Discussion :Issued: 2025 Jul 11 1230 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 with only C-class flares observed. The largest flare during the period was a C8.9 at 10/1936 UTC from an unnumbered region beyond the east limb at S13. This region was responsible for the majority of the C-class activity. Slight growth was observed in Region 4136 (N19E46, Dki/beta-gamma-delta) while Region 4137 (N18W40, Dai/beta) was in decay. New spot emergence was observed in the NW quadrant and was numbered 4138 (N28W06, Cri/beta). An approximate 10 degree filament eruption centered near N30W12 was observed lifting off at approximately 11/0229 UTC. Awaiting further imagery for confirmation of a CME. .Forecast... Solar activity is expected to be low with a chance for M-class flares (R1-R2/Minor-Moderate) through 13 Jul, primarily due to the flare potential of Region 4136 as well as the region rotating around the SE limb. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux reached high levels with a peak flux of 3,110 pfu observed at 10/1530 UTC. 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 through 13 Jul. The greater than 10 MeV proton flux is expected to continue at background levels. Solar Wind .24 hr Summary... Solar wind conditions began to increase after 11/0030 UTC, likely the early onset of a CIR preceding a positive polarity CH HSS. Total field increased to 13 nT while the Bz component was between +9/-11 nT. Solar wind speed began to increase after 11/0440 UTC to near 465 km/s. Phi angle switched into a positive sector at 10/2230 UTC. .Forecast... Solar wind conditions are expected to continue to be enhanced through 14 Jul as HSS activity persists. Geospace .24 hr Summary... The geomagnetic field was quiet to active. .Forecast... Unsettled to G1 (Minor) levels are expected through the rest of the UTC day on 11 Jul due to CH HSS onset. Quiet to unsettled levels, with isolated active periods possible, are likely on 12-13 Jul as HSS effects persist.