48-hour migraine risk based on barometric pressure, humidity, and temperature changes in Long Beach.
Long Beach sits behind Catalina Island in a stretch of coast where the marine layer holds pressure unusually steady. Daily swings average about 4 hPa, among the flattest readings in the country, and the sharpest changes arrive with winter frontal systems.
Worst season for migraines: January through March. Pacific frontal systems reach the Southern California bight mainly in midwinter. Outside that window the semi-permanent Pacific high parks offshore and holds conditions close to flat for months at a time.
Common triggers in Long Beach: winter frontal passages off the Pacific, Catalina eddy marine layer deepening, offshore Santa Ana reversals in autumn. Catalina eddy circulation, a counterclockwise flow that forms in the bight, deepens the marine layer and can shift local pressure independently of the larger regional pattern. Port workers and residents near the water often notice attacks tied to eddy days rather than to any storm on the forecast.
Typical pressure: Long Beach averages 1013 hPa at rest, measured at the city's own elevation rather than corrected to sea level, and storm systems can push readings down to 1006 hPa. Swings of 4-6 hPa over 24 hours are common during active weather and fall within the range most associated with pressure-triggered migraines.
Can Long Beach weather trigger migraines?
Yes. Long Beach experiences 4-6 hPa barometric pressure swings, and research shows pressure drops are one of the most common migraine triggers. The city's specific patterns include winter frontal passages off the Pacific, Catalina eddy marine layer deepening, offshore Santa Ana reversals in autumn.
What time of year are migraines worst in Long Beach?
In Long Beach the most barometrically volatile stretch of the year falls in January through March. 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 Long Beach?
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 Long Beach's weather conditions over time.
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