Magnetic storms in Cergy-Pontoise
Magnetic storms in Cergy-Pontoise, Île-de-France today. Current Kp index, 3-day forecast for Cergy-Pontoise, local time, geomagnetic latitude and aurora visibility chance.
Data as of 08 Oct, 12:14 (Europe/Paris).
Weather in Cergy-Pontoise
Weather data: Open-Meteo (CC BY).
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Local context
Sensitivity · Cergy-Pontoise
Medium sensitivity (mid latitudes)
Kp is a planetary index — the same globally. Local impact depends on geomagnetic latitude: the higher it is, the more noticeable the storm.
14-day calendar with Kp, moon and cloud factors
Seven quick questions and personal tips
Geomagnetic context for Cergy-Pontoise
Magnetic storm in Cergy-Pontoise: 3-day Kp chart
Aurora forecast in Cergy-Pontoise
| Date | Max Kp | Moon | Clouds | Score | Outlook |
|---|---|---|---|---|---|
| Thu, Oct 08 | 1.7 | 12% | 58% | 0 | Auroras are very unlikely tonight. |
| Fri, Oct 09 | 5.7 | 6% | 85% | 1 | Auroras are very unlikely tonight. |
| Sat, Oct 10 | 4.0 | 2% | 70% | 0 | Auroras are very unlikely tonight. |
| Sun, Oct 11 | 4.0 | 0% | 77% | 0 | Auroras are very unlikely tonight. |
| Mon, Oct 12 | 3.0* | 0% | 68% | 0 | Auroras are very unlikely tonight. |
| Tue, Oct 13 | 3.0* | 3% | 99% | 0 | Auroras are very unlikely tonight. |
| Wed, Oct 14 | 3.0* | 8% | 89% | 0 | Auroras are very unlikely tonight. |
| Thu, Oct 15 | 3.0* | 14% | 96% | 0 | Auroras are very unlikely tonight. |
| Fri, Oct 16 | 3.0* | 22% | 44% | 0 | Auroras are very unlikely tonight. |
| Sat, Oct 17 | 3.0* | 32% | 90% | 0 | Auroras are very unlikely tonight. |
| Sun, Oct 18 | 3.0* | 42% | 62% | 0 | Auroras are very unlikely tonight. |
| Mon, Oct 19 | 3.0* | 52% | 82% | 0 | Auroras are very unlikely tonight. |
| Tue, Oct 20 | 3.0* | 63% | 63% | 0 | Auroras are very unlikely tonight. |
| Wed, Oct 21 | 3.0* | 73% | 9% | 0 | Auroras are very unlikely tonight. |
- Thu, Oct 080Max Kp: 1.7Moon: 12%Clouds: 58%Auroras are very unlikely tonight.
- Fri, Oct 091Max Kp: 5.7Moon: 6%Clouds: 85%Auroras are very unlikely tonight.
- Sat, Oct 100Max Kp: 4.0Moon: 2%Clouds: 70%Auroras are very unlikely tonight.
- Sun, Oct 110Max Kp: 4.0Moon: 0%Clouds: 77%Auroras are very unlikely tonight.
- Mon, Oct 120Max Kp: 3.0*Moon: 0%Clouds: 68%Auroras are very unlikely tonight.
- Tue, Oct 130Max Kp: 3.0*Moon: 3%Clouds: 99%Auroras are very unlikely tonight.
- Wed, Oct 140Max Kp: 3.0*Moon: 8%Clouds: 89%Auroras are very unlikely tonight.
- Thu, Oct 150Max Kp: 3.0*Moon: 14%Clouds: 96%Auroras are very unlikely tonight.
- Fri, Oct 160Max Kp: 3.0*Moon: 22%Clouds: 44%Auroras are very unlikely tonight.
- Sat, Oct 170Max Kp: 3.0*Moon: 32%Clouds: 90%Auroras are very unlikely tonight.
- Sun, Oct 180Max Kp: 3.0*Moon: 42%Clouds: 62%Auroras are very unlikely tonight.
- Mon, Oct 190Max Kp: 3.0*Moon: 52%Clouds: 82%Auroras are very unlikely tonight.
- Tue, Oct 200Max Kp: 3.0*Moon: 63%Clouds: 63%Auroras are very unlikely tonight.
- Wed, Oct 210Max Kp: 3.0*Moon: 73%Clouds: 9%Auroras are very unlikely tonight.
* Days marked with an asterisk do not have a direct NOAA forecast yet. If we have observations from 27 days ago, we use Bartels recurrence (the Sun rotates roughly every 27 days, so active regions often return with the same period). When no history is available, we substitute a baseline value typical for the current solar cycle 25 peak (Kp 3.0). Accuracy is lower than the direct three-day forecast.
How the score works
The composite score combines three signals: how strong the storm needs to be at your geomagnetic latitude, how bright the moon will be (a full moon hides faint auroras), and how cloudy the sky will be that night. A score of 70 or higher is excellent, 45 to 70 is good, below 20 means you probably will not see anything.
Magnetic storms in Cergy-Pontoise over the last 30 days
Geomagnetic storms of class G1 and above recorded over the past month. Times are shown in the city's local timezone (GMT+2).
In Cergy-Pontoise (geomagnetic latitude 50.6°), auroras are possible from Kp ≥ 9.
| Date | Peak | Max Kp | Level | Duration | Aurora visible |
|---|---|---|---|---|---|
| 05:00 | 5.3 | G1 | 3 h | No | |
| 20:00 | 5.7 | G1 | 3 h | No | |
| 11:00 | 5.0 | G1 | 3 h | No |
Nearby cities
About magnetic storms in Cergy-Pontoise
Magnetic storm in Cergy-Pontoise today: planetary Kp = 1.7 (quiet). Over the last 7 days the maximum Kp above Cergy-Pontoise reached 5.7 (G1); storm days (G1+) this week: 2.
Cergy-Pontoise sits at geomagnetic latitude 50.6°. The nearest magnetic observatory continuously recording the field is Lviv, 1563 km away. Population 183,430.
Cergy-Pontoise is located at mid-latitudes (50.6°), where storm effects on the body are usually mild and noticeable mainly during severe G4 to G5 events. At Kp ≥ 6, some weather-sensitive people may report pressure swings, headaches or restless sleep; routine precautions like extra hydration, less caffeine and lighter physical load during the strongest events are usually enough.
For most technical systems in Cergy-Pontoise (50.6°, mid-latitudes), routine geomagnetic activity has little practical effect. Noticeable GPS, HF radio or grid issues are largely confined to severe G4 to G5 storms. Long-haul drivers, surveyors and HF operators in the region may want to check the forecast during the strongest events. Source: NOAA Space Weather Prediction Center, refreshed every 10 minutes.
Over Cergy-Pontoise during the last 24 hours. Kp reached a maximum of 2.7 around 17:00 local time and dipped to 1.0. The planetary trend over the past 6 hours is steady — no sharp changes near Cergy-Pontoise right now. So far this month the planet has logged 2 days with a G1 or stronger geomagnetic storm.
Aurora visibility threshold for Cergy-Pontoise. At a geomagnetic latitude of 50.6°, the minimum Kp giving a realistic chance of visible auroras above Cergy-Pontoise is about Kp ≥ 6. 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 Cergy-Pontoise right now. Temperature +12.7°C, atmospheric pressure 760.2 mm Hg (1013.5 hPa), cloud cover 71%, humidity 65%, wind 16.1 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 Cergy-Pontoise page shows both indicators side by side. Weather data from Open-Meteo (CC BY).
Aurora viewing window for Cergy-Pontoise tonight. Sunset is at 18:16 local time, sunrise tomorrow at 07:01. Moon phase — waning crescent with 10% disk illumination. Heavy cloud cover lowers the chance of seeing auroras even during a strong storm — it may be worth waiting for the next clear night..