:Product: Geomagnetic Forecast :Issued: 2024 Sep 11 2205 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # NOAA Ap Index Forecast Observed Ap 10 Sep 007 Estimated Ap 11 Sep 016 Predicted Ap 12 Sep-14 Sep 020-035-025 NOAA Geomagnetic Activity Probabilities 12 Sep-14 Sep Active 20/20/25 Minor storm 40/30/35 Moderate storm 15/35/15 Strong-Extreme storm 05/10/05 NOAA Kp index forecast 12 Sep - 14 Sep Sep 12 Sep 13 Sep 14 00-03UT 2.00 6.00 4.00 03-06UT 2.00 5.00 3.33 06-09UT 2.33 4.67 3.67 09-12UT 2.00 4.67 4.00 12-15UT 2.00 4.33 4.00 15-18UT 3.00 3.67 4.00 18-21UT 5.00 2.67 4.00 21-00UT 5.33 1.67 4.00