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Add code to infer conditions from wind + gusts when Open-Meteo over simplifies weather

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This commit is contained in:
mrkmntal 2026-04-13 11:33:11 -04:00
commit 84ae94e052
6 changed files with 94 additions and 14 deletions
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36
server/scripts/modules/utils/weather.mjs
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@ -9,7 +9,7 @@ const OPEN_METEO_FORECAST_PARAMETERS = [
].join('&');
const OPEN_METEO_RADAR_OBSERVATION_PARAMETERS = [
'hourly=temperature_2m,weather_code,is_day',
'hourly=temperature_2m,weather_code,is_day,wind_speed_10m,wind_gusts_10m',
'forecast_days=1',
'timezone=auto',
'models=best_match',
@ -119,6 +119,8 @@ const getOpenMeteoObservationSnapshot = async (lat, lon) => {
temperature: forecast.hourly.temperature_2m?.[nearestIndex] ?? null,
weatherCode: forecast.hourly.weather_code?.[nearestIndex] ?? 0,
isDay: Boolean(forecast.hourly.is_day?.[nearestIndex] ?? 1),
windSpeed: forecast.hourly.wind_speed_10m?.[nearestIndex] ?? 0,
windGusts: forecast.hourly.wind_gusts_10m?.[nearestIndex] ?? 0,
timezone: forecast.timezone,
};
@ -131,8 +133,8 @@ const getOpenMeteoObservationSnapshot = async (lat, lon) => {
};
const weatherConditions = [
{ codes: [0], text: ['Clear sky'] },
{ codes: [1, 2, 3], text: ['Mainly clear', 'Partly cloudy', 'Overcast'] },
{ codes: [0], text: ['Clear'] },
{ codes: [1, 2, 3], text: ['Mostly Clear', 'Some Clouds', 'Overcast'] },
{ codes: [45, 48], text: ['Fog', 'Depositing rime fog'] },
{ codes: [51, 53, 55], text: ['Light Drizzle', 'Moderate Drizzle', 'Dense Drizzle'] },
{ codes: [56, 57], text: ['Light Freezing Drizzle', 'Dense Freezing Drizzle'] },
@ -146,6 +148,32 @@ const weatherConditions = [
{ codes: [96, 99], text: ['Thunderstorm with Slight Hail', 'Thunderstorm with Heavy Hail'] },
];
// Wind descriptor thresholds (km/h)
const getWindDescriptor = (windSpeedKmh, windGustsKmh) => {
// Use max of sustained wind or weighted gusts
const maxWind = Math.max(windSpeedKmh, (windGustsKmh || 0) * 0.8);
if (maxWind >= 56) return 'Very Windy';
if (maxWind >= 36) return 'Windy';
if (maxWind >= 21) return 'Breezy';
return null;
};
// Get condition text with wind descriptor
const getConditionTextWithWind = (weatherCode, windSpeedKmh, windGustsKmh) => {
const baseCondition = getConditionText(weatherCode);
const windDesc = getWindDescriptor(windSpeedKmh, windGustsKmh);
if (windDesc) {
// For clear sky conditions, just use the wind descriptor
if (weatherCode === 0) {
return windDesc;
}
return `${baseCondition} ${windDesc}`;
}
return baseCondition;
};
const getConditionText = (code) => {
const condition = weatherConditions.find((item) => item.codes.includes(Number(code)));
if (!condition) {
@ -229,4 +257,6 @@ export {
getOpenMeteoObservationSnapshot,
aggregateWeatherForecastData,
getConditionText,
getWindDescriptor,
getConditionTextWithWind,
};