Magnetic storms in San Diego
Magnetic storms in San Diego, California today. Current Kp index, 3-day forecast for San Diego, local time, geomagnetic latitude and aurora visibility chance.
Data as of 08 Oct, 10:59 (America/Los_Angeles).
Weather in San Diego
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 · San Diego
Low sensitivity (low 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 San Diego
Magnetic storm in San Diego: 3-day Kp chart
Aurora forecast in San Diego
| Date | Max Kp | Moon | Clouds | Score | Outlook |
|---|---|---|---|---|---|
| Wed, Oct 07 | — | 20% | 6% | — | Kp forecast is not yet available for this date. |
| Thu, Oct 08 | 1.7 | 12% | 9% | 0 | Auroras are very unlikely tonight. |
| Fri, Oct 09 | 5.7 | 6% | 18% | 0 | Auroras are very unlikely tonight. |
| Sat, Oct 10 | 4.0 | 2% | 98% | 0 | Auroras are very unlikely tonight. |
| Sun, Oct 11 | 4.0 | 0% | 97% | 0 | Auroras are very unlikely tonight. |
| Mon, Oct 12 | 3.0* | 0% | 62% | 0 | Auroras are very unlikely tonight. |
| Tue, Oct 13 | 3.0* | 3% | 70% | 0 | Auroras are very unlikely tonight. |
| Wed, Oct 14 | 3.0* | 8% | 43% | 0 | Auroras are very unlikely tonight. |
| Thu, Oct 15 | 3.0* | 14% | 56% | 0 | Auroras are very unlikely tonight. |
| Fri, Oct 16 | 3.0* | 22% | 14% | 0 | Auroras are very unlikely tonight. |
| Sat, Oct 17 | 3.0* | 32% | 0% | 0 | Auroras are very unlikely tonight. |
| Sun, Oct 18 | 3.0* | 42% | 1% | 0 | Auroras are very unlikely tonight. |
| Mon, Oct 19 | 3.0* | 52% | 53% | 0 | Auroras are very unlikely tonight. |
| Tue, Oct 20 | 3.0* | 63% | 1% | 0 | Auroras are very unlikely tonight. |
| Wed, Oct 21 | 3.0* | 73% | — | 0 | Auroras are very unlikely tonight. |
- Wed, Oct 07no dataMax Kp: —Moon: 20%Clouds: 6%Kp forecast is not yet available for this date.
- Thu, Oct 080Max Kp: 1.7Moon: 12%Clouds: 9%Auroras are very unlikely tonight.
- Fri, Oct 090Max Kp: 5.7Moon: 6%Clouds: 18%Auroras are very unlikely tonight.
- Sat, Oct 100Max Kp: 4.0Moon: 2%Clouds: 98%Auroras are very unlikely tonight.
- Sun, Oct 110Max Kp: 4.0Moon: 0%Clouds: 97%Auroras are very unlikely tonight.
- Mon, Oct 120Max Kp: 3.0*Moon: 0%Clouds: 62%Auroras are very unlikely tonight.
- Tue, Oct 130Max Kp: 3.0*Moon: 3%Clouds: 70%Auroras are very unlikely tonight.
- Wed, Oct 140Max Kp: 3.0*Moon: 8%Clouds: 43%Auroras are very unlikely tonight.
- Thu, Oct 150Max Kp: 3.0*Moon: 14%Clouds: 56%Auroras are very unlikely tonight.
- Fri, Oct 160Max Kp: 3.0*Moon: 22%Clouds: 14%Auroras are very unlikely tonight.
- Sat, Oct 170Max Kp: 3.0*Moon: 32%Clouds: 0%Auroras are very unlikely tonight.
- Sun, Oct 180Max Kp: 3.0*Moon: 42%Clouds: 1%Auroras are very unlikely tonight.
- Mon, Oct 190Max Kp: 3.0*Moon: 52%Clouds: 53%Auroras are very unlikely tonight.
- Tue, Oct 200Max Kp: 3.0*Moon: 63%Clouds: 1%Auroras are very unlikely tonight.
- Wed, Oct 210Max Kp: 3.0*Moon: 73%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 San Diego 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 (PDT).
In San Diego (geomagnetic latitude 39.1°), auroras are extremely rare even during strong storms.
| Date | Peak | Max Kp | Level | Duration | Aurora visible |
|---|---|---|---|---|---|
| 20:00 | 5.3 | G1 | 3 h | No | |
| 11:00 | 5.7 | G1 | 3 h | No | |
| 02:00 | 5.0 | G1 | 3 h | No |
Nearby cities
About magnetic storms in San Diego
Magnetic storm in San Diego today: planetary Kp = 1.0 (quiet). Over the last 7 days the maximum Kp above San Diego reached 5.7 (G1); storm days (G1+) this week: 2.
San Diego sits at geomagnetic latitude 39.1°. The nearest magnetic observatory continuously recording the field is Paratunka (Kamchatka), 6823 km away. Population 1,404,452.
San Diego sits at low latitudes (39.1°), where geomagnetic storms have very limited impact on health. Scientific links between Kp and well-being are weak this far from the auroral oval, and only the strongest Carrington-class events would be expected to affect sensitive groups. Standard healthy habits, good sleep, hydration and moderate activity, remain the most reliable advice.
Technical systems in San Diego (39.1°, low latitudes) are well shielded from geomagnetic disturbances. Even extreme storms rarely cause meaningful GPS, radio or power-grid problems at this latitude, so routine activity, navigation and communications can be considered safe. For reference and historical events, data come from the NOAA Space Weather Prediction Center, updated every 10 minutes.
Over San Diego during the last 24 hours. Kp reached a maximum of 2.3 around 11:00 local time and dipped to 1.0. The planetary trend over the past 6 hours is rising — conditions near San Diego may intensify further. So far this month the planet has logged 2 days with a G1 or stronger geomagnetic storm.
Aurora visibility threshold for San Diego. At a geomagnetic latitude of 39.1°, the minimum Kp giving a realistic chance of visible auroras above San Diego 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 San Diego right now. Temperature +22.8°C, atmospheric pressure 757.2 mm Hg (1009.5 hPa), cloud cover 3%, humidity 84%, wind 2.5 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 San Diego page shows both indicators side by side. Weather data from Open-Meteo (CC BY).
Aurora viewing window for San Diego tonight. Sunset is at 08:23 local time, sunrise tomorrow at 20:47. Moon phase — waning crescent with 8% disk illumination. Clear sky and low moonlight make the window favorable — with enough Kp, the aurora may be visible even from within city limits..