Magnetic storms in Massy

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

Massy sits at geomagnetic latitude 33.2°. The nearest magnetic observatory continuously recording the field is Tashkent (Yangibazar), 254 km away. Population 19,774.

Magnetic storms and health of Massy 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 Massy 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 Massy during the last 24 hours. Kp reached a maximum of 2.7 around 06:00 local time and dipped to 1.0. The planetary trend over the past 6 hours is steady — no sharp changes near Massy right now. So far this month the planet has logged 3 days with a G1 or stronger geomagnetic storm.

Aurora visibility threshold for Massy. At a geomagnetic latitude of 33.2°, the minimum Kp giving a realistic chance of visible auroras above Massy 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.

Weather and atmospheric pressure in Massy right now. Temperature +25.2°C, atmospheric pressure 702.7 mm Hg (936.9 hPa), cloud cover 0%, humidity 37%, wind 6 km/h. During G1+ geomagnetic storms, swings in atmospheric pressure tend to amplify symptoms for weather-sensitive people: those with hypertension often notice blood-pressure spikes, and readings below 1000 hPa combined with Kp ≥ 5 frequently bring headaches and fatigue. That is why the Massy page shows both indicators side by side. Weather data from Open-Meteo (CC BY).

Aurora viewing window for Massy tonight. Sunset is at 22:58 local time, sunrise tomorrow at 09:17. Moon phase — first quarter with 48% disk illumination. Clear sky and low moonlight make the window favorable — with enough Kp, the aurora may be visible even from within city limits..