Magnetic storms in Bolton
Magnetic storms in Bolton, England today. Current Kp index, 3-day forecast for Bolton, local time, geomagnetic latitude and aurora visibility chance.
Data as of 24 Aug, 10:54 (Europe/London).
Weather in Bolton
Weather data: Open-Meteo (CC BY).
Health and geomagnetic storms
A small library on how geomagnetic activity is associated with blood pressure, migraine, sleep, the cardiovascular system, anxiety and general wellbeing. Backed by peer-reviewed research, free of medical advice.
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Local context
Sensitivity · Bolton
High sensitivity (sub-auroral zone)
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 Bolton
Magnetic storm in Bolton: 3-day Kp chart
Aurora forecast in Bolton
| Date | Max Kp | Moon | Clouds | Score | Outlook |
|---|---|---|---|---|---|
| Sun, Aug 23 | — | 73% | 41% | — | Kp forecast is not yet available for this date. |
| Mon, Aug 24 | 1.7 | 82% | 38% | 2 | Auroras are very unlikely tonight. |
| Tue, Aug 25 | 1.7 | 90% | 43% | 1 | Auroras are very unlikely tonight. |
| Wed, Aug 26 | 1.7 | 95% | 84% | 0 | Auroras are very unlikely tonight. |
| Thu, Aug 27 | 1.7 | 99% | 89% | 0 | Auroras are very unlikely tonight. |
| Fri, Aug 28 | 3.0* | 100% | 99% | 0 | Auroras are very unlikely tonight. |
| Sat, Aug 29 | 3.0* | 99% | 89% | 0 | Auroras are very unlikely tonight. |
| Sun, Aug 30 | 3.0* | 96% | 83% | 0 | Auroras are very unlikely tonight. |
| Mon, Aug 31 | 3.0* | 91% | 66% | 1 | Auroras are very unlikely tonight. |
| Tue, Sep 01 | 3.0* | 84% | 92% | 0 | Auroras are very unlikely tonight. |
| Wed, Sep 02 | 3.0* | 75% | 45% | 2 | Auroras are very unlikely tonight. |
| Thu, Sep 03 | 3.0* | 65% | 51% | 2 | Auroras are very unlikely tonight. |
| Fri, Sep 04 | 3.0* | 55% | 41% | 2 | Auroras are very unlikely tonight. |
| Sat, Sep 05 | 3.0* | 44% | 85% | 1 | Auroras are very unlikely tonight. |
| Sun, Sep 06 | 3.0* | 34% | — | 3 | Auroras are very unlikely tonight. |
- Sun, Aug 23no dataMax Kp: —Moon: 73%Clouds: 41%Kp forecast is not yet available for this date.
- Mon, Aug 242Max Kp: 1.7Moon: 82%Clouds: 38%Auroras are very unlikely tonight.
- Tue, Aug 251Max Kp: 1.7Moon: 90%Clouds: 43%Auroras are very unlikely tonight.
- Wed, Aug 260Max Kp: 1.7Moon: 95%Clouds: 84%Auroras are very unlikely tonight.
- Thu, Aug 270Max Kp: 1.7Moon: 99%Clouds: 89%Auroras are very unlikely tonight.
- Fri, Aug 280Max Kp: 3.0*Moon: 100%Clouds: 99%Auroras are very unlikely tonight.
- Sat, Aug 290Max Kp: 3.0*Moon: 99%Clouds: 89%Auroras are very unlikely tonight.
- Sun, Aug 300Max Kp: 3.0*Moon: 96%Clouds: 83%Auroras are very unlikely tonight.
- Mon, Aug 311Max Kp: 3.0*Moon: 91%Clouds: 66%Auroras are very unlikely tonight.
- Tue, Sep 010Max Kp: 3.0*Moon: 84%Clouds: 92%Auroras are very unlikely tonight.
- Wed, Sep 022Max Kp: 3.0*Moon: 75%Clouds: 45%Auroras are very unlikely tonight.
- Thu, Sep 032Max Kp: 3.0*Moon: 65%Clouds: 51%Auroras are very unlikely tonight.
- Fri, Sep 042Max Kp: 3.0*Moon: 55%Clouds: 41%Auroras are very unlikely tonight.
- Sat, Sep 051Max Kp: 3.0*Moon: 44%Clouds: 85%Auroras are very unlikely tonight.
- Sun, Sep 063Max Kp: 3.0*Moon: 34%Clouds: —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 Bolton 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+1).
In Bolton (geomagnetic latitude 55.8°), auroras are possible from Kp ≥ 6.
| Date | Peak | Max Kp | Level | Duration | Aurora visible |
|---|---|---|---|---|---|
| 04:00 | 5.0 | G1 | 3 h | No | |
| 19:00 | 5.3 | G1 | 3 h | No | |
| 04:00 | 5.0 | G1 | 3 h | No |
Nearby cities
About magnetic storms in Bolton
Magnetic storm in Bolton today: planetary Kp = 0.0 (quiet). Over the last 7 days the maximum Kp above Bolton reached 5.3 (G1); storm days (G1+) this week: 2.
Bolton sits at geomagnetic latitude 55.8°. The nearest magnetic observatory continuously recording the field is Lviv, 1837 km away. Population 141,331.
Bolton lies in the sub-auroral zone (55.8°), where storms are felt several times per year. At G3 and stronger, weather-sensitive residents may experience blood-pressure changes, headaches and sleep issues; pensioners and people with hypertension should watch the forecast. During a storm, drink more water, avoid alcohol and strong coffee, and reduce intense physical exertion.
Technical consequences for Bolton (sub-auroral zone, 55.8°) appear from G4 upward: GPS and HF radio may degrade, precise positioning can drift, and northern power grids in the region carry a measurable GIC risk during the strongest events. Drivers on long routes should track the forecast for the next 24 to 72 hours. Source: NOAA Space Weather Prediction Center, updated every 10 minutes.
Over Bolton during the last 24 hours. Kp reached a maximum of 2.3 around 01:00 local time and dipped to 0.7. The planetary trend over the past 6 hours is falling — the magnetosphere near Bolton is in the recovery phase. So far this month the planet has logged 2 days with a G1 or stronger geomagnetic storm.
Aurora visibility threshold for Bolton. At a geomagnetic latitude of 55.8°, the minimum Kp giving a realistic chance of visible auroras above Bolton is about Kp ≥ 5. 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 Bolton right now. Temperature +17.7°C, atmospheric pressure 760.5 mm Hg (1013.9 hPa), cloud cover 47%, humidity 53%, wind 6.8 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 Bolton page shows both indicators side by side. Weather data from Open-Meteo (CC BY).
Aurora viewing window for Bolton tonight. Sunset is at 18:21 local time, sunrise tomorrow at 04:03. Moon phase — waxing gibbous with 85% disk illumination. The Moon is close to full tonight, so moonlight will be strong and faint auroras will be harder to spot — wait for Kp ≥ 6 or pick a darker site..