:Product: Geomagnetic Forecast :Issued: 2021 Dec 09 2205 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # NOAA Ap Index Forecast Observed Ap 08 Dec 005 Estimated Ap 09 Dec 003 Predicted Ap 10 Dec-12 Dec 010-008-010 NOAA Geomagnetic Activity Probabilities 10 Dec-12 Dec Active 30/25/30 Minor storm 10/10/10 Moderate storm 01/01/01 Strong-Extreme storm 01/01/01 NOAA Kp index forecast 10 Dec - 12 Dec Dec 10 Dec 11 Dec 12 00-03UT 3 2 2 03-06UT 3 3 2 06-09UT 3 2 2 09-12UT 2 2 2 12-15UT 2 1 2 15-18UT 1 2 2 18-21UT 2 3 3 21-00UT 2 2 3