Why this exists
A migraine sufferer’s question.
I live with migraines and have long wondered whether fast-moving weather is one of the patterns that precedes a difficult day. MigraineCast began as a way to explore that question carefully: turn local weather observations into a consistent, readable signal, then compare it with my own experience over time.
Weather is only one possible influence on migraine, and people respond differently. This site does not claim that weather causes an individual attack. Instead, it highlights periods when several weather changes occur together, so I can decide whether to plan ahead, use my usual comfort strategies, or add a note to a personal diary.
The markers
What the index checks.
Air pressureSix-hour falls and swings
TemperatureSix-hour change
HumidityWarm, humid conditions
WindStronger gusts
RainTwo-hour total
ThunderstormsWeather codes
The score
A simple relative scale.
Every two-hour period starts at 12. The model adds points for the markers above: a faster pressure fall adds more than a rise, larger temperature changes add more, and warm humidity, gusts, rain and thunderstorm codes each contribute when present. The total is capped at 100.
Daily forecast and hindcast cells display that day’s highest two-hour score. This deliberately makes brief but strong weather changes visible. It is a relative weather-exposure index, not a medical risk percentage.