Magnetic storms in Seattle
Magnetic storms in Seattle, Washington today. Current Kp index, 3-day forecast for Seattle, local time, geomagnetic latitude and aurora visibility chance.
Data as of 11 Jun, 22:04 (America/Los_Angeles).
Weather in Seattle
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.
Medication and geomagnetic storms
Whether to adjust antihypertensives and other drug doses on storm days, and what cardiologists and neurologists recommend.
HealthOlder adults and geomagnetic storms
Why seniors are more sensitive to Kp, how to support older relatives, and which risks to keep in mind.
HealthChildren and geomagnetic storms
Whether geomagnetic fluctuations affect children's sleep, behaviour and mood, and what the research shows.
Health
Local context
Sensitivity · Seattle
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 Seattle
Magnetic storm in Seattle: 3-day Kp chart
Aurora forecast in Seattle
| Date | Max Kp | Moon | Clouds | Score | Outlook |
|---|---|---|---|---|---|
| Thu, Jun 11 | — | 19% | 14% | — | Kp forecast is not yet available for this date. |
| Fri, Jun 12 | 4.7 | 12% | 17% | 0 | Auroras are very unlikely tonight. |
| Sat, Jun 13 | 5.7 | 6% | 24% | 7 | Low chance, only the strongest auroras will show. |
| Sun, Jun 14 | 4.7 | 2% | 29% | 0 | Auroras are very unlikely tonight. |
| Mon, Jun 15 | 2.0 | 0% | 79% | 0 | Auroras are very unlikely tonight. |
| Tue, Jun 16 | 3.0* | 1% | 21% | 0 | Auroras are very unlikely tonight. |
| Wed, Jun 17 | 3.0* | 3% | 21% | 0 | Auroras are very unlikely tonight. |
| Thu, Jun 18 | 3.0* | 8% | 9% | 0 | Auroras are very unlikely tonight. |
| Fri, Jun 19 | 3.0* | 15% | 72% | 0 | Auroras are very unlikely tonight. |
| Sat, Jun 20 | 3.0* | 23% | 67% | 0 | Auroras are very unlikely tonight. |
| Sun, Jun 21 | 3.0* | 33% | 3% | 0 | Auroras are very unlikely tonight. |
| Mon, Jun 22 | 3.0* | 43% | 51% | 0 | Auroras are very unlikely tonight. |
| Tue, Jun 23 | 3.0* | 54% | 63% | 0 | Auroras are very unlikely tonight. |
| Wed, Jun 24 | 3.0* | 64% | 86% | 0 | Auroras are very unlikely tonight. |
| Thu, Jun 25 | 3.0* | 74% | — | 0 | Auroras are very unlikely tonight. |
- Thu, Jun 11no dataMax Kp: —Moon: 19%Clouds: 14%Kp forecast is not yet available for this date.
- Fri, Jun 120Max Kp: 4.7Moon: 12%Clouds: 17%Auroras are very unlikely tonight.
- Sat, Jun 137Max Kp: 5.7Moon: 6%Clouds: 24%Low chance, only the strongest auroras will show.
- Sun, Jun 140Max Kp: 4.7Moon: 2%Clouds: 29%Auroras are very unlikely tonight.
- Mon, Jun 150Max Kp: 2.0Moon: 0%Clouds: 79%Auroras are very unlikely tonight.
- Tue, Jun 160Max Kp: 3.0*Moon: 1%Clouds: 21%Auroras are very unlikely tonight.
- Wed, Jun 170Max Kp: 3.0*Moon: 3%Clouds: 21%Auroras are very unlikely tonight.
- Thu, Jun 180Max Kp: 3.0*Moon: 8%Clouds: 9%Auroras are very unlikely tonight.
- Fri, Jun 190Max Kp: 3.0*Moon: 15%Clouds: 72%Auroras are very unlikely tonight.
- Sat, Jun 200Max Kp: 3.0*Moon: 23%Clouds: 67%Auroras are very unlikely tonight.
- Sun, Jun 210Max Kp: 3.0*Moon: 33%Clouds: 3%Auroras are very unlikely tonight.
- Mon, Jun 220Max Kp: 3.0*Moon: 43%Clouds: 51%Auroras are very unlikely tonight.
- Tue, Jun 230Max Kp: 3.0*Moon: 54%Clouds: 63%Auroras are very unlikely tonight.
- Wed, Jun 240Max Kp: 3.0*Moon: 64%Clouds: 86%Auroras are very unlikely tonight.
- Thu, Jun 250Max Kp: 3.0*Moon: 74%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 Seattle 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 Seattle (geomagnetic latitude 53.1°), auroras are possible from Kp ≥ 7.
| Date | Peak | Max Kp | Level | Duration | Aurora visible |
|---|---|---|---|---|---|
| 11:00 | 5.0 | G1 | 3 h | No | |
| 08:00 | 6.3 | G2 | 12 h | No |
Nearby cities
About magnetic storms in Seattle
Magnetic storm in Seattle today: planetary Kp = 2.7 (quiet). Over the last 7 days the maximum Kp above Seattle reached 6.3 (G2); storm days (G1+) this week: 2.
Seattle sits at geomagnetic latitude 53.1°. The nearest magnetic observatory continuously recording the field is Paratunka (Kamchatka), 5380 km away. Population 780,995.
Seattle is located at mid-latitudes (53.1°), 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 Seattle (53.1°, 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 Seattle during the last 24 hours. Kp reached a maximum of 5.0 around 11:00 local time and dipped to 2.3. The planetary trend over the past 6 hours is falling — the magnetosphere near Seattle 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 Seattle. At a geomagnetic latitude of 53.1°, the minimum Kp giving a realistic chance of visible auroras above Seattle 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 Seattle right now. Temperature +20.5°C, atmospheric pressure 759.4 mm Hg (1012.5 hPa), cloud cover 0%, humidity 49%, wind 7.7 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 Seattle page shows both indicators side by side. Weather data from Open-Meteo (CC BY).
Aurora viewing window for Seattle tonight. Sunset is at 11:06 local time, sunrise tomorrow at 19:11. Moon phase — waning crescent with 10% disk illumination. Clear sky and low moonlight make the window favorable — with enough Kp, the aurora may be visible even from within city limits..