Magnetic storms in Mesa
Magnetic storms in Mesa, Arizona today. Current Kp index, 3-day forecast for Mesa, local time, geomagnetic latitude and aurora visibility chance.
Data as of 08 Oct, 08:20 (America/Phoenix).
Weather in Mesa
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.
Cardiovascular system and geomagnetic storms
Effects on heart rhythm, emergency call statistics, who should pay extra attention.
HealthSleep and geomagnetic storms
Why sleep quality drops during storm days, how geomagnetic activity relates to melatonin and sleep architecture.
HealthPregnancy and geomagnetic storms
How geomagnetic disturbances may affect pregnant women, what current data shows, and what to watch for on storm days.
Health
Local context
Sensitivity · Mesa
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 Mesa
Magnetic storm in Mesa: 3-day Kp chart
Aurora forecast in Mesa
| Date | Max Kp | Moon | Clouds | Score | Outlook |
|---|---|---|---|---|---|
| Thu, Oct 08 | 1.7 | 12% | 1% | 0 | Auroras are very unlikely tonight. |
| Fri, Oct 09 | 5.7 | 6% | 56% | 0 | Auroras are very unlikely tonight. |
| Sat, Oct 10 | 4.0 | 2% | 77% | 0 | Auroras are very unlikely tonight. |
| Sun, Oct 11 | 4.0 | 0% | 33% | 0 | Auroras are very unlikely tonight. |
| Mon, Oct 12 | 3.0* | 0% | 84% | 0 | Auroras are very unlikely tonight. |
| Tue, Oct 13 | 3.0* | 3% | 92% | 0 | Auroras are very unlikely tonight. |
| Wed, Oct 14 | 3.0* | 8% | 8% | 0 | Auroras are very unlikely tonight. |
| Thu, Oct 15 | 3.0* | 14% | 0% | 0 | Auroras are very unlikely tonight. |
| Fri, Oct 16 | 3.0* | 22% | 0% | 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% | 0% | 0 | Auroras are very unlikely tonight. |
| Mon, Oct 19 | 3.0* | 52% | 0% | 0 | Auroras are very unlikely tonight. |
| Tue, Oct 20 | 3.0* | 63% | 0% | 0 | Auroras are very unlikely tonight. |
| Wed, Oct 21 | 3.0* | 73% | 0% | 0 | Auroras are very unlikely tonight. |
- Thu, Oct 080Max Kp: 1.7Moon: 12%Clouds: 1%Auroras are very unlikely tonight.
- Fri, Oct 090Max Kp: 5.7Moon: 6%Clouds: 56%Auroras are very unlikely tonight.
- Sat, Oct 100Max Kp: 4.0Moon: 2%Clouds: 77%Auroras are very unlikely tonight.
- Sun, Oct 110Max Kp: 4.0Moon: 0%Clouds: 33%Auroras are very unlikely tonight.
- Mon, Oct 120Max Kp: 3.0*Moon: 0%Clouds: 84%Auroras are very unlikely tonight.
- Tue, Oct 130Max Kp: 3.0*Moon: 3%Clouds: 92%Auroras are very unlikely tonight.
- Wed, Oct 140Max Kp: 3.0*Moon: 8%Clouds: 8%Auroras are very unlikely tonight.
- Thu, Oct 150Max Kp: 3.0*Moon: 14%Clouds: 0%Auroras are very unlikely tonight.
- Fri, Oct 160Max Kp: 3.0*Moon: 22%Clouds: 0%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: 0%Auroras are very unlikely tonight.
- Mon, Oct 190Max Kp: 3.0*Moon: 52%Clouds: 0%Auroras are very unlikely tonight.
- Tue, Oct 200Max Kp: 3.0*Moon: 63%Clouds: 0%Auroras are very unlikely tonight.
- Wed, Oct 210Max Kp: 3.0*Moon: 73%Clouds: 0%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 Mesa 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 (MST).
In Mesa (geomagnetic latitude 40.4°), 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 Mesa
Magnetic storm in Mesa today: planetary Kp = 0.0 (quiet). Over the last 7 days the maximum Kp above Mesa reached 5.7 (G1); storm days (G1+) this week: 2.
Mesa sits at geomagnetic latitude 40.4°. The nearest magnetic observatory continuously recording the field is Paratunka (Kamchatka), 7102 km away. Population 471,825.
Mesa sits at low latitudes (40.4°), 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 Mesa (40.4°, 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 Mesa 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 Mesa may intensify further. So far this month the planet has logged 2 days with a G1 or stronger geomagnetic storm.
Aurora visibility threshold for Mesa. At a geomagnetic latitude of 40.4°, the minimum Kp giving a realistic chance of visible auroras above Mesa is about Kp ≥ 8. 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 Mesa right now. Temperature +26.8°C, atmospheric pressure 724 mm Hg (965.3 hPa), cloud cover 0%, humidity 39%, wind 8.4 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 Mesa page shows both indicators side by side. Weather data from Open-Meteo (CC BY).
Aurora viewing window for Mesa tonight. Sunset is at 08:02 local time, sunrise tomorrow at 20:26. 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..