####018000878#### AXXX82 KWNP 090031 DAYOBS :Product: Summary of Space Weather Observations dayobs.txt :Issued: 2026 May 09 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 May 08 # Region Location Sunspot Characteristics # Helio Spot Spot Mag. # Num Lat.,CMD Long. Area Extent class count class 4431 S16W48 100 120 2 HSX 1 A 4432 N14W29 81 140 9 DAI 18 B 4433 S16E03 49 150 8 CAO 4 B 4434 N14W04 56 10 1 AXX 1 A 4435 N23E11 41 60 2 HSX 1 A ####018002084#### FXXX10 KWNP 090031 DAYTDF :Product: 3-Day Forecast :Issued: 2026 May 09 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 May 09-May 11 2026 is 3.00 (below NOAA Scale levels). NOAA Kp index breakdown May 09-May 11 2026 May 09 May 10 May 11 00-03UT 2.67 2.67 1.67 03-06UT 3.00 2.00 2.67 06-09UT 2.67 2.00 2.67 09-12UT 2.00 1.67 1.67 12-15UT 2.00 1.00 1.33 15-18UT 1.67 0.67 1.33 18-21UT 2.00 1.00 2.00 21-00UT 2.67 1.67 2.67 Rationale: No G1 (Minor) or greater geomagnetic storms are expected. B. NOAA Solar Radiation Activity Observation and Forecast Solar radiation, as observed by NOAA GOES-19 over the past 24 hours, was below S-scale storm level thresholds. Solar Radiation Storm Forecast for May 09-May 11 2026 May 09 May 10 May 11 S1 or greater 1% 1% 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 May 09-May 11 2026 May 09 May 10 May 11 R1-R2 45% 45% 45% R3 or greater 10% 10% 10% Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio blackouts, with a slight chance for R3 (Strong), over 09-11 May. ####018002210#### FXXX12 KWNP 090031 DAYDIS :Product: Forecast Discussion :Issued: 2026 May 09 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 returned to low levels this period. Region 4432 (N14W29, Dai/beta) continued to show signs of development and produced a C4.2 flare at 08/1551 UTC; the strongest of the period. The remaining regions were either stable or in decay. No Earth-directed CMEs were detected in available coronagraph imagery. .Forecast... Solar activity is expected to be at predominately low levels over 09-11 May, with a chance for M-class (R1-R2/Minor-Moderate) flares and a slight chance for an X-class (R3-Strong or greater) flare. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux was at normal to moderate levels. The greater than 10 MeV electron flux was at background levels. .Forecast... The greater than 2 MeV electron flux is likely to reach high levels on 09-11 May. The greater than 10 MeV proton flux is expected to persist at background levels through 11 May. Solar Wind .24 hr Summary... The solar wind environment was consistent with continued, but waning positive polarity CH HSS influences. Total magnetic field strength reached a peak of 19 nT. The Bz component was predominately neutral or northward throughout the period, with a few readings as far south as -12 nT observed briefly during the first half of the period. Solar wind speeds increased from a low of around 400 km/s to a peak just over 600 km/s by mid-period. Phi was in a predominantly positive orientation. .Forecast... Solar wind parameters are expected to remain mildly enhanced through 11 May under positive polarity CH HSS influences. Geospace .24 hr Summary... The geomagnetic field was quiet and unsettled. .Forecast... The geomagnetic field is expected to be at quiet to unsettled levels on 09-11 May as positive polarity CH HSS influences persist.