Magnetic storms in Hangzhou

Magnetic storm in Hangzhou today: planetary Kp = 0.0 (G0). Over the last 7 days the maximum Kp above Hangzhou reached 5.7 (G1); storm days (G1+) this week: 3.

Hangzhou sits at geomagnetic latitude 21.2°. The nearest magnetic observatory continuously recording the field is Irkutsk (Patrony), 2760 km away. Population 9,236,032.

Magnetic storms and health of Hangzhou residents: at Kp ≥ 5 weather-sensitive people may experience pressure swings, headaches, sleep issues. Especially pensioners and people with hypertension should watch the forecast. During a storm — hydrate more, avoid alcohol and strong coffee, avoid intense physical load.

Technical consequences for Hangzhou at G3+: GPS, HF radio and precise positioning systems may glitch. Drivers on long routes should watch the forecast for the next 24–72 hours. Data source: NOAA Space Weather Prediction Center, refreshed every 10 minutes.

Over Hangzhou during the last 24 hours. Kp reached a maximum of 2.7 around 08:00 local time and dipped to 1.0. The planetary trend over the past 6 hours is steady — no sharp changes near Hangzhou right now. So far this month the planet has logged 3 days with a G1 or stronger geomagnetic storm.

Aurora visibility threshold for Hangzhou. At a geomagnetic latitude of 21.2°, the minimum Kp giving a realistic chance of visible auroras above Hangzhou is about Kp ≥ 9. The current equatorial Dst index is 0 nT — the magnetosphere is in a quiet phase. Dst complements Kp by showing how long and how deep a storm's main phase has been — useful context when checking whether auroras are likely tonight.