===================================== NOAA 3 Day Space Weather 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 Sep 30-Oct 02 2023 is 4.00 (below NOAA Scale levels). NOAA Kp index breakdown Sep 30-Oct 02 2023 Sep 30 Oct 01 Oct 02 00-03UT 1.67 3.00 1.33 03-06UT 2.33 2.33 2.00 06-09UT 3.00 2.00 4.00 09-12UT 2.33 2.00 4.00 12-15UT 1.33 1.33 3.00 15-18UT 1.00 1.00 2.33 18-21UT 1.33 2.00 2.33 21-00UT 2.33 2.67 3.33 Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast. B. NOAA Solar Radiation Activity Observation and Forecast Solar radiation, as observed by NOAA GOES-16 over the past 24 hours, was below S-scale storm level thresholds. Solar Radiation Storm Forecast for Sep 30-Oct 02 2023 Sep 30 Oct 01 Oct 02 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 Sep 30-Oct 02 2023 Sep 30 Oct 01 Oct 02 R1-R2 30% 30% 30% R3 or greater 1% 1% 1% Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio blackouts over 30 Sep - 02 Oct.