Routine Space Environment Product (Daily)
Issued by NWS
Issued by NWS
517 FXXX12 KWNP 291231 DAYDIS :Product: Forecast Discussion :Issued: 2026 Jan 29 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. Low level C-class flares were observed from Regions 4355 (S13, L=298) and 4357 (S13W27, Cri/beta). Slight growth was observed in Region 4357. Separation occurred in Region 4349 (S14W53, Hax/alpha). The resto of the spotted Regions were in decay. New Region 4362 (S17E79, Hsx/alpha) rotated around the SE limb and was numbered. No Earth-directed CMEs were observed. .Forecast... Solar activity is expected to be low with a slight chance for M-class flares (R1-R2, Minor-Moderate) through 31 Jan. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux reached high levels with a peak flux of 10,382 pfu observed at 28/1710 UTC. The greater than 10 MeV proton flux was below the S1 (Minor) threshold. .Forecast... The greater than 2 MeV electron flux is expected to continue at moderate to high levels on 29-31 Jan. The greater than 10 MeV proton flux is expected to remain at or near background levels through 31 Jan. Solar Wind .24 hr Summary... Solar wind parameters reflected negative polarity CH HSS conditions. Solar wind speed increased from approximately 540 km/s to near 700 km/s. Total field decreased from 13 nT to around 6 nT while the Bz component was between +/-12 nT. Phi angle was predominantly negative. .Forecast... Enhancements in the solar wind environment are expected on 29-31 Jan under negative polarity CH HSS influences. Geospace .24 hr Summary... The geomagnetic field was at unsettled to G1 (Minor) storm levels due to CH HSS effects. .Forecast... Unsettled to active levels, with a chance for G1 (Minor) storm levels, are expected for the rest of the UTC day on 29 Jan. Quiet to unsettled levels, with isolated active periods possible, are expected on 30-31 Jan as HSS conditions persist.