| Predicted ionosphere disturbance scale: | I1 - Disturbed |
| Predicted start time (UTC): | 2017-12-20T00:00:00 (+/-24 hours) |
| Predicted Ionosphere | Forecast TEC maps up to 24 hours in advance. The onset of disturbances in the ionosphere can be forecasted about 30 minutes in advance. |
| Current Ionosphere | Current and one hour forecasted TEC maps, provided by IMPC. |
| Predicted geomagnetic disturbances: | expected minimum Kp: 2 |
| Predicted geomagnetic disturbances: | expected maximum Kp: 4 |
| Expected Hazards | Impacts on high frequency (HF) radio propagation expected. Influence on positioning and navigation is possible. |
| Influenced geographic area: | not specified |
| Probability of incidence: | 20% |
Source: IMPC Ionosphere Monitoring and Prediction Center - DLR
Corresponding solar warning message issued by SIDC Belgium 2017-12-17T08:53:13 (UTC):
| Event type: | CME_arrival |
| Latest Presto Message: | LATEST PRESTO FROM SIDC - RWC BELGIUM |