Storm Impact Analysis¶
This page shows measured SNR degradation during geomagnetic storms. All values come from actual signal measurements — WSPR, RBN, and PSK Reporter spots collected during storm events — joined against Kp index at 3-hour resolution.
A geomagnetic storm is defined here as Kp >= 5, sustained for at least 3 hours. SNR before/during/after is the median across all recorded spots on each band during the respective window.
Recent Storm Events¶
| Storm Date (UTC) | Peak Kp | Classification |
|---|---|---|
| 2026-02-16 | 6.0 |  |
| 2026-02-15 | 5.33 |  |
| 2026-01-11 | 5.33 | |
| 2026-01-10 | 5.67 | |
| 2026-01-02 | 5.0 | |
| 2025-12-12 | 5.0 | |
| 2025-12-11 | 6.0 | |
| 2025-12-10 | 6.0 | |
| 2025-12-04 | 5.0 | |
| 2025-12-03 | 6.67 | |
| 2025-11-13 | 7.33 |  |
| 2025-11-12 | 8.67 |  |
| 2025-11-08 | 6.0 | |
| 2025-11-07 | 5.33 | |
| 2025-11-06 | 6.67 | |
| 2025-11-05 | 5.67 | |
| 2025-10-30 | 5.33 | |
| 2025-10-19 | 5.0 | |
| 2025-10-18 | 6.33 | |
| 2025-10-12 | 5.0 | |
SNR Before / During / After — Most Recent Storm¶
Median SNR (dB) measured from WSPR spots in the 24-hour window before, during, and 24-hour window after peak Kp.
| Band | Before (dB) | During (dB) | After (dB) | Change During | Recovery |
|---|---|---|---|---|---|
| 10m | — | — | — | — | — |
| 15m | — | — | — | — | — |
| 20m | — | — | — | — | — |
| 40m | — | — | — | — | — |
| 80m | — | — | — | — | — |
| 160m | — | — | — | — | — |
Coming soon — requires per-storm SNR comparison query.
Recovery Timeline¶
Hours after peak Kp until median SNR returns to within 1 dB of pre-storm baseline, by band. Averaged across all storms in the dataset where Kp >= 5.
| Band | Median Recovery (hrs) | 90th Percentile (hrs) | Storm Count |
|---|---|---|---|
| 10m | — | — | — |
| 15m | — | — | — |
| 20m | — | — | — |
| 40m | — | — | — |
| 80m | — | — | — |
| 160m | — | — | — |
Coming soon — requires recovery analysis query.
Storm Frequency by Year¶
| Year | Kp>=5 Events | Kp>=7 Events | Peak Kp | Cycle Phase |
|---|---|---|---|---|
| — | — | — | — | — |
Storm counts derived from solar.bronze (GFZ Potsdam historical data,
backfilled 2000–2026). Coming soon.