:Product: Geomagnetic Forecast :Issued: 2026 Oct 13 2205 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # NOAA Ap Index Forecast Observed Ap 12 Oct 007 Estimated Ap 13 Oct 020 Predicted Ap 14 Oct-16 Oct 018-010-005 NOAA Geomagnetic Activity Probabilities 14 Oct-16 Oct Active 35/20/15 Minor storm 25/05/01 Moderate storm 10/01/01 Strong-Extreme storm 01/01/01 NOAA Kp index forecast 14 Oct - 16 Oct Oct 14 Oct 15 Oct 16 00-03UT 3.67 2.67 1.67 03-06UT 3.33 3.33 1.67 06-09UT 3.67 3.00 1.33 09-12UT 2.67 2.33 1.33 12-15UT 2.67 1.67 1.33 15-18UT 3.33 1.00 1.33 18-21UT 3.33 1.33 1.67 21-00UT 3.33 2.33 1.33