:Product: Geomagnetic Forecast :Issued: 2023 Sep 27 2205 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # NOAA Ap Index Forecast Observed Ap 26 Sep 032 Estimated Ap 27 Sep 016 Predicted Ap 28 Sep-30 Sep 008-008-012 NOAA Geomagnetic Activity Probabilities 28 Sep-30 Sep Active 25/25/35 Minor storm 05/05/20 Moderate storm 01/01/05 Strong-Extreme storm 01/01/01 NOAA Kp index forecast 28 Sep - 30 Sep Sep 28 Sep 29 Sep 30 00-03UT 2.67 1.67 2.67 03-06UT 2.67 2.33 2.67 06-09UT 2.33 2.00 2.33 09-12UT 1.67 1.67 2.67 12-15UT 1.33 2.33 3.67 15-18UT 1.33 2.33 2.00 18-21UT 1.67 2.67 2.67 21-00UT 1.33 2.33 2.33