48-hour migraine risk based on barometric pressure, humidity, and temperature changes in Eureka.
Eureka takes the full force of North Pacific storms with no landmass upwind to weaken them. Its swing range of 4 to 10 hPa is the widest on the California coast, and Humboldt Bay keeps humidity high enough that the air rarely dries out at all.
Worst season for migraines: March, February and January. From late autumn into early spring the city sits squarely in the Pacific storm track. Systems arrive at full strength, and back-to-back lows can hold pressure depressed for days rather than hours.
Common triggers in Eureka: North Pacific storm sequences arriving undiminished, persistent maritime humidity above 80 percent, multi-day depressed pressure between fronts. Unlike the rest of California, Eureka has no meaningful dry season and no marine layer that burns off. Summer fog persists most days, keeping the temperature range unusually narrow while the barometer does most of the moving. The Cascadia coastline also means storms often stall against the King Range rather than passing cleanly through.
Typical pressure: Eureka averages 1016 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 1001 hPa. Swings of 4-10 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
Can Eureka weather trigger migraines?
Yes. Eureka experiences 4-10 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include North Pacific storm sequences arriving undiminished, persistent maritime humidity above 80 percent, multi-day depressed pressure between fronts.
What time of year are migraines worst in Eureka?
In Eureka the most barometrically volatile stretch of the year falls in March, February and January. That is when weather is most likely to play a part, if weather is a trigger for you at all.
How do I track migraine triggers in Eureka?
Use MigrAid to log your attacks with one tap. The app automatically records barometric pressure, temperature, and humidity at the time of each migraine, then finds patterns between your attacks and Eureka's weather conditions over time.
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