####018001168#### AXXX82 KWNP 280031 DAYOBS :Product: Summary of Space Weather Observations dayobs.txt :Issued: 2026 Jan 28 0030 UTC # Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center # Product description and SWPC contact on the Web # https://www.swpc.noaa.gov/content/subscription-services # # Summary of Space Weather Observations # :Solar_Region_Summary: 2026 Jan 27 # Region Location Sunspot Characteristics # Helio Spot Spot Mag. # Num Lat.,CMD Long. Area Extent class count class 4341 S10W0* 45 60 4 HAX 1 A 4342 N16W99 43 90 3 CSO 3 B 4347 N09W72 16 60 3 HSX 2 A 4349 S14W34 338 120 2 HSX 1 A 4351 S05W61 5 60 5 DAO 6 B 4353 N17W58 360 10 2 BXO 3 B 4355 S13E05 299 10 1 HRX 1 A 4356 S12W20 324 10 1 AXX 1 A 4357 S13W05 309 20 4 CAO 5 B 4358 N14E64 240 10 1 AXX 1 A ####018002308#### FXXX12 KWNP 280031 DAYDIS :Product: Forecast Discussion :Issued: 2026 Jan 28 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 low. Weak C-class flaring was observed from departed Region 4342 (N16, L=042), 4351 (S05W61, Dao/beta), and 4353 (N17W58, Bxo/beta). The largest flare was a C3.1 observed at 27/0929 UTC from Region 4351. Very little change was observed in the eight spotted regions on the disk. New Region 4858 (N14E64, Axx/alpha) was numbered. No Earth-directed CMEs were observed. .Forecast... Solar activity is expected to remain at low levels with a chance for M-class flares (R1-R2, Minor-Moderate) through 30 Jan. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux reached high levels with a peak flux of 13,180 pfu observed at 27/1650 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 decrease to normal to moderate levels on 28-29 Jan and increase to high levels on 30 Jan. The greater than 10 MeV proton flux is expected to remain at or near background levels through 30 Jan. Solar Wind .24 hr Summary... Solar wind parameters reflected weakening, positive polarity CH HSS effects through 17/1441 UTC when the phi angle rotated from a positive to a negative orientation. During the 24 hour period, total field ranged from 5-9 nT while the Bz component varied between +4/-5 nT. Solar wind speed varied between about 400 km/s to 470 km/s. .Forecast... Enhancements in the solar wind environment are expected through 28-30 Jan under negative polarity CH HSS influences. Geospace .24 hr Summary... The geomagnetic field was at quiet to unsettled levels. .Forecast... Unsettled to active levels, with isolated G1 (Minor) geomagnetic storm periods, are expected on 28 Jan due to the onset of negative polarity CH HSS effects. Unsettled to active levels are expected on 29-30 Jan under continued negative polarity CH HSS influence. ####018002090#### FXXX10 KWNP 280031 DAYTDF :Product: 3-Day Forecast :Issued: 2026 Jan 28 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 # # 3-Day Forecast # A. NOAA Geomagnetic Activity Observation and Forecast The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA Scale levels). The greatest expected 3 hr Kp for Jan 28-Jan 30 2026 is 4.67 (NOAA Scale G1). NOAA Kp index breakdown Jan 28-Jan 30 2026 Jan 28 Jan 29 Jan 30 00-03UT 3.67 3.33 2.67 03-06UT 3.33 3.67 2.67 06-09UT 3.33 3.00 2.33 09-12UT 3.67 2.33 2.33 12-15UT 4.00 2.67 2.33 15-18UT 4.67 (G1) 3.33 2.33 18-21UT 4.00 3.67 2.00 21-00UT 4.33 4.00 2.33 Rationale: G1 (Minor) geomagnetic storms are likely on 28 Jan due to CH HSS influences. B. NOAA Solar Radiation Activity Observation and Forecast Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was below S-scale storm level thresholds. Solar Radiation Storm Forecast for Jan 28-Jan 30 2026 Jan 28 Jan 29 Jan 30 S1 or greater 5% 5% 5% Rationale: No S1 (Minor) or greater solar radiation storms are expected. No significant active region activity favorable for radiation storm production is forecast. C. NOAA Radio Blackout Activity and Forecast No radio blackouts were observed over the past 24 hours. Radio Blackout Forecast for Jan 28-Jan 30 2026 Jan 28 Jan 29 Jan 30 R1-R2 25% 25% 20% R3 or greater 5% 5% 5% Rationale: A chance for R1-R2 (Minor-Moderate) radio blackouts due to isolated M-class flares will persist through 30 Jan.