####018001110#### AXXX82 KWNP 270031 DAYOBS :Product: Summary of Space Weather Observations dayobs.txt :Issued: 2026 Jan 27 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 26 # Region Location Sunspot Characteristics # Helio Spot Spot Mag. # Num Lat.,CMD Long. Area Extent class count class 4341 S10W87 44 60 4 HAX 1 A 4342 N16W85 42 90 3 CSO 3 B 4345 S17W82 39 80 8 CSO 3 B 4347 N10W59 16 60 2 HSX 1 A 4349 S14W19 336 160 4 CSO 3 B 4351 S05W47 4 40 5 DAO 7 B 4353 N18W43 360 40 4 DSO 3 B 4355 S12E18 299 20 3 CAO 3 B 4356 S12W07 324 10 1 AXX 1 A ####018002086#### FXXX10 KWNP 270031 DAYTDF :Product: 3-Day Forecast :Issued: 2026 Jan 27 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 27-Jan 29 2026 is 4.67 (NOAA Scale G1). NOAA Kp index breakdown Jan 27-Jan 29 2026 Jan 27 Jan 28 Jan 29 00-03UT 3.33 4.00 3.33 03-06UT 3.00 4.67 (G1) 3.67 06-09UT 2.67 3.33 3.00 09-12UT 2.67 3.00 2.33 12-15UT 2.33 3.33 2.67 15-18UT 2.00 3.67 3.33 18-21UT 2.33 4.00 3.67 21-00UT 2.67 4.00 4.00 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 27-Jan 29 2026 Jan 27 Jan 28 Jan 29 S1 or greater 5% 5% 1% 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 27-Jan 29 2026 Jan 27 Jan 28 Jan 29 R1-R2 25% 25% 25% R3 or greater 5% 5% 1% Rationale: A chance for R1-R2 (Minor-Moderate) radio blackouts due to isolated M-class flares will persist through 29 Jan. ####018002865#### FXXX12 KWNP 270031 DAYDIS :Product: Forecast Discussion :Issued: 2026 Jan 27 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. Region 4355 (S12E18, Cao/beta) produced a C8.8 flare that peaked at 26/1339 UTC, the largest event of the period. Weak C-class activity was also observed in Regions 4342 (N16W85, Cso/beta) and 4351 (S05W47, Dao/beta). Some slight overall growth was detected in Region 4355. The remaining eight spotted regions were either in decay or indicated limited change. New Region 4356 (S12W07, Axx/alpha) was numbered. No significant Earth-directed CMEs were observed over the past 24 hours. .Forecast... Solar activity is expected to be low with a chance for M-class flares (R1/R2, Minor/Moderate) through 29 Jan. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux reached high levels with a peak flux of 8,393 pfu observed at 26/1445 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 remain at high levels on 27 Jan before decreasing to normal to moderate levels on 28-29 Jan. The greater than 10 MeV proton flux is expected to remain at background levels through 29 Jan. Solar Wind .24 hr Summary... Solar wind parameters reflected weakening positive polarity CH HSS influence and a possible weak transient disturbance late in the period. Total field primarily ranged between 4-6 nT, but underwent an increase to 7-9 nT beginning around 26/0542 UTC. The Bz component of the IMF was mostly near neutral or northward with only a few weak southward deflections to -5 nT. Solar wind speeds exhibited an overall steady trend averaging between 500-550 km/s. Phi was predominantly positive with a few brief excursions into the negative solar sector. .Forecast... Positive polarity CH HSS influences are expected to gradually diminish over the first half of 27 Jan. The latter half of 27 Jan should bring negative polarity CH HSS influences and enhancements into the solar wind environment, which will then continue through 28-29 Jan. Geospace .24 hr Summary... Geomagnetic field activity was at quiet to unsettled levels. .Forecast... Mostly quiet levels are expected through early on 27 Jan becoming unsettled by late on 27 Jan due to an anticipated solar sector boundary crossing. Isolated G1 (Minor) geomagnetic storming periods are likely on 28 Jan with the onset of negative polarity CH HSS effects. Unsettled to active levels are expected on 29 Jan.